pull master

pkg/compiler/compiler.go

@@ -1,19 +1,20 @@
 package compiler
 
 import (
+	"github.com/pkg/errors"
+
 	"github.com/MontFerret/ferret/pkg/parser"
 	"github.com/MontFerret/ferret/pkg/runtime"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/stdlib"
-	"github.com/pkg/errors"
 )
 
-type FqlCompiler struct {
+type Compiler struct {
 	*NamespaceContainer
 }
 
-func New(setters ...Option) *FqlCompiler {
-	c := &FqlCompiler{}
+func New(setters ...Option) *Compiler {
+	c := &Compiler{}
 	c.NamespaceContainer = newRootNamespace()
 	c.funcs = make(map[string]core.Function)
 
@@ -32,7 +33,7 @@ func New(setters ...Option) *FqlCompiler {
 	return c
 }
 
-func (c *FqlCompiler) Compile(query string) (program *runtime.Program, err error) {
+func (c *Compiler) Compile(query string) (program *runtime.Program, err error) {
 	if query == "" {
 		return nil, ErrEmptyQuery
 	}
@@ -69,7 +70,7 @@ func (c *FqlCompiler) Compile(query string) (program *runtime.Program, err error
 	return program, err
 }
 
-func (c *FqlCompiler) MustCompile(query string) *runtime.Program {
+func (c *Compiler) MustCompile(query string) *runtime.Program {
 	program, err := c.Compile(query)
 
 	if err != nil {

pkg/compiler/compiler_member_test.go

@@ -119,14 +119,110 @@ func TestMember(t *testing.T) {
 
 			So(string(out), ShouldEqual, `"wsx"`)
 		})
+
+		Convey("Deep path", func() {
+			c := compiler.New()
+
+			p, err := c.Compile(`
+				LET obj = {
+					first: {
+						second: {
+							third: {
+								fourth: {
+									fifth: {
+										bottom: true
+									}
+								}
+							}
+						}
+					}
+				}
+
+				RETURN obj.first.second.third.fourth.fifth.bottom
+			`)
+
+			So(err, ShouldBeNil)
+
+			out, err := p.Run(context.Background())
+
+			So(err, ShouldBeNil)
+
+			So(string(out), ShouldEqual, `true`)
+		})
+
+		Convey("Deep computed path", func() {
+			c := compiler.New()
+
+			p, err := c.Compile(`
+				LET obj = {
+					first: {
+						second: {
+							third: {
+								fourth: {
+									fifth: {
+										bottom: true
+									}
+								}
+							}
+						}
+					}
+				}
+
+				RETURN obj["first"]["second"]["third"]["fourth"]["fifth"].bottom
+			`)
+
+			So(err, ShouldBeNil)
+
+			out, err := p.Run(context.Background())
+
+			So(err, ShouldBeNil)
+
+			So(string(out), ShouldEqual, `true`)
+		})
+
+		Convey("Prop after a func call", func() {
+			c := compiler.New()
+
+			p, err := c.Compile(`
+				LET arr = [{ name: "Bob" }]
+
+				RETURN FIRST(arr).name
+			`)
+
+			So(err, ShouldBeNil)
+
+			out, err := p.Run(context.Background())
+
+			So(err, ShouldBeNil)
+
+			So(string(out), ShouldEqual, `"Bob"`)
+		})
+
+		Convey("Computed prop after a func call", func() {
+			c := compiler.New()
+
+			p, err := c.Compile(`
+				LET arr = [{ name: { first: "Bob" } }]
+
+				RETURN FIRST(arr)['name'].first
+			`)
+
+			So(err, ShouldBeNil)
+
+			out, err := p.Run(context.Background())
+
+			So(err, ShouldBeNil)
+
+			So(string(out), ShouldEqual, `"Bob"`)
+		})
 	})
 }
 
 func BenchmarkMemberArray(b *testing.B) {
 	p := compiler.New().MustCompile(`
-				LET arr = [1]
+				LET arr = [[[[1]]]]
 
-				RETURN arr[0]
+				RETURN arr[0][0][0][0]
 			`)
 
 	for n := 0; n < b.N; n++ {
@@ -136,9 +232,21 @@ func BenchmarkMemberArray(b *testing.B) {
 
 func BenchmarkMemberObject(b *testing.B) {
 	p := compiler.New().MustCompile(`
-				LET obj = { "foo": "bar"}
+				LET obj = {
+					first: {
+						second: {
+							third: {
+								fourth: {
+									fifth: {
+										bottom: true
+									}
+								}
+							}
+						}
+					}
+				}
 
-				RETURN obj.foo
+				RETURN obj.first.second.third.fourth.fifth.bottom
 			`)
 
 	for n := 0; n < b.N; n++ {

pkg/compiler/compiler_param_test.go

@@ -63,4 +63,54 @@ func TestParam(t *testing.T) {
 		So(string(out), ShouldEqual, `[1,2,3,4]`)
 
 	})
+
+	Convey("Should be possible to use in member expression", t, func() {
+		prog := compiler.New().
+			MustCompile(`
+			RETURN @param.value
+		`)
+
+		out := prog.MustRun(
+			context.Background(),
+			runtime.WithParam("param", map[string]interface{}{
+				"value": "foobar",
+			}),
+		)
+
+		So(string(out), ShouldEqual, `"foobar"`)
+
+	})
+
+	Convey("Should be possible to use in member expression as a computed property", t, func() {
+		prog := compiler.New().
+			MustCompile(`
+			LET obj = { foo: "bar" }
+			RETURN obj[@param]
+		`)
+
+		out := prog.MustRun(
+			context.Background(),
+			runtime.WithParam("param", "foo"),
+		)
+
+		So(string(out), ShouldEqual, `"bar"`)
+	})
+
+	Convey("Should be possible to use in member expression as segments", t, func() {
+		prog := compiler.New().
+			MustCompile(`
+			LET doc = { foo: { bar: "baz" } }
+
+			RETURN doc.@attr.@subattr
+		`)
+
+		out := prog.MustRun(
+			context.Background(),
+			runtime.WithParam("attr", "foo"),
+			runtime.WithParam("subattr", "bar"),
+		)
+
+		So(string(out), ShouldEqual, `"baz"`)
+
+	})
 }

pkg/compiler/compiler_str_test.go

@@ -23,7 +23,7 @@ BAR
 		So(string(out), ShouldEqual, `"\nFOO\nBAR\n"`)
 	})
 
-	Convey("Should be possible to use multi line string with nested strings", t, func() {
+	Convey("Should be possible to use multi line string with nested strings using backtick", t, func() {
 		compiler.New().
 			MustCompile(fmt.Sprintf(`
 RETURN %s<!DOCTYPE html>
@@ -54,6 +54,38 @@ RETURN %s<!DOCTYPE html>
 
 		So(string(out), ShouldEqual, string(out))
 	})
+
+	Convey("Should be possible to use multi line string with nested strings using tick", t, func() {
+		compiler.New().
+			MustCompile(fmt.Sprintf(`
+RETURN %s<!DOCTYPE html>
+		<html lang="en">
+		<head>
+		<meta charset="UTF-8">
+		<title>GetTitle</title>
+		</head>
+		<body>
+			Hello world
+		</body>
+		</html>%s
+`, "´", "´")).
+			MustRun(context.Background())
+
+		out, err := json.Marshal(`<!DOCTYPE html>
+		<html lang="en">
+		<head>
+		<meta charset="UTF-8">
+		<title>GetTitle</title>
+		</head>
+		<body>
+			Hello world
+		</body>
+		</html>`)
+
+		So(err, ShouldBeNil)
+
+		So(string(out), ShouldEqual, string(out))
+	})
 }
 
 func BenchmarkStringLiteral(b *testing.B) {

pkg/compiler/visitor.go

@@ -736,15 +736,13 @@ func (v *visitor) doVisitForExpressionStatement(ctx *fql.ForExpressionStatementC
 }
 
 func (v *visitor) doVisitMemberExpression(ctx *fql.MemberExpressionContext, scope *scope) (core.Expression, error) {
-	varName := ctx.Identifier().GetText()
-
-	_, err := scope.GetVariable(varName)
+	member, err := v.doVisitMember(ctx.Member().(*fql.MemberContext), scope)
 
 	if err != nil {
 		return nil, err
 	}
 
-	children := ctx.GetChildren()
+	children := ctx.MemberPath().GetChildren()
 	path := make([]core.Expression, 0, len(children))
 
 	for _, child := range children {
@@ -784,9 +782,9 @@ func (v *visitor) doVisitMemberExpression(ctx *fql.MemberExpressionContext, scop
 		path = append(path, exp)
 	}
 
-	member, err := expressions.NewMemberExpression(
+	exp, err := expressions.NewMemberExpression(
 		v.getSourceMap(ctx),
-		varName,
+		member,
 		path,
 	)
 
@@ -794,7 +792,51 @@ func (v *visitor) doVisitMemberExpression(ctx *fql.MemberExpressionContext, scop
 		return nil, err
 	}
 
-	return member, nil
+	return exp, nil
+}
+
+func (v *visitor) doVisitMember(ctx *fql.MemberContext, scope *scope) (core.Expression, error) {
+	identifier := ctx.Identifier()
+
+	if identifier != nil {
+		varName := ctx.Identifier().GetText()
+
+		_, err := scope.GetVariable(varName)
+
+		if err != nil {
+			return nil, err
+		}
+
+		exp, err := expressions.NewVariableExpression(v.getSourceMap(ctx), varName)
+
+		if err != nil {
+			return nil, err
+		}
+
+		return exp, nil
+	}
+
+	fnCall := ctx.FunctionCallExpression()
+
+	if fnCall != nil {
+		exp, err := v.doVisitFunctionCallExpression(fnCall.(*fql.FunctionCallExpressionContext), scope)
+
+		if err != nil {
+			return nil, err
+		}
+
+		return exp, nil
+	}
+
+	param := ctx.Param()
+
+	exp, err := v.doVisitParamContext(param.(*fql.ParamContext), scope)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return exp, nil
 }
 
 func (v *visitor) doVisitObjectLiteral(ctx *fql.ObjectLiteralContext, scope *scope) (core.Expression, error) {
@@ -847,7 +889,7 @@ func (v *visitor) doVisitObjectLiteral(ctx *fql.ObjectLiteralContext, scope *sco
 	return literals.NewObjectLiteralWith(props...), nil
 }
 
-func (v *visitor) doVisitPropertyNameContext(ctx *fql.PropertyNameContext, _ *scope) (core.Expression, error) {
+func (v *visitor) doVisitPropertyNameContext(ctx *fql.PropertyNameContext, scope *scope) (core.Expression, error) {
 	var name string
 
 	identifier := ctx.Identifier()
@@ -860,6 +902,14 @@ func (v *visitor) doVisitPropertyNameContext(ctx *fql.PropertyNameContext, _ *sc
 		if stringLiteral != nil {
 			runes := []rune(stringLiteral.GetText())
 			name = string(runes[1 : len(runes)-1])
+		} else {
+			param, err := v.doVisitParamContext(ctx.Param().(*fql.ParamContext), scope)
+
+			if err != nil {
+				return nil, err
+			}
+
+			return param, nil
 		}
 	}
 
@@ -937,8 +987,6 @@ func (v *visitor) doVisitStringLiteral(ctx *fql.StringLiteralContext) (core.Expr
 
 	if strLiteral != nil {
 		text = strLiteral.GetText()
-	} else {
-		text = ctx.TemplateStringLiteral().GetText()
 	}
 
 	// remove extra quotes

pkg/drivers/cdp/document.go

@@ -243,23 +243,23 @@ func (doc *HTMLDocument) GetNodeName() values.String {
 	return "#document"
 }
 
-func (doc *HTMLDocument) GetChildNodes(ctx context.Context) core.Value {
+func (doc *HTMLDocument) GetChildNodes(ctx context.Context) (*values.Array, error) {
 	return doc.element.GetChildNodes(ctx)
 }
 
-func (doc *HTMLDocument) GetChildNode(ctx context.Context, idx values.Int) core.Value {
+func (doc *HTMLDocument) GetChildNode(ctx context.Context, idx values.Int) (core.Value, error) {
 	return doc.element.GetChildNode(ctx, idx)
 }
 
-func (doc *HTMLDocument) QuerySelector(ctx context.Context, selector values.String) core.Value {
+func (doc *HTMLDocument) QuerySelector(ctx context.Context, selector values.String) (core.Value, error) {
 	return doc.element.QuerySelector(ctx, selector)
 }
 
-func (doc *HTMLDocument) QuerySelectorAll(ctx context.Context, selector values.String) core.Value {
+func (doc *HTMLDocument) QuerySelectorAll(ctx context.Context, selector values.String) (*values.Array, error) {
 	return doc.element.QuerySelectorAll(ctx, selector)
 }
 
-func (doc *HTMLDocument) CountBySelector(ctx context.Context, selector values.String) values.Int {
+func (doc *HTMLDocument) CountBySelector(ctx context.Context, selector values.String) (values.Int, error) {
 	return doc.element.CountBySelector(ctx, selector)
 }
 
@@ -268,7 +268,7 @@ func (doc *HTMLDocument) ExistsBySelector(ctx context.Context, selector values.S
 }
 
 func (doc *HTMLDocument) GetTitle() values.String {
-	value, err := doc.exec.ReadProperty(context.Background(), doc.element.id.objectID, "title")
+	value, err := doc.exec.ReadProperty(context.Background(), doc.element.id.ObjectID, "title")
 
 	if err != nil {
 		doc.logError(errors.Wrap(err, "failed to read document title"))
@@ -317,32 +317,8 @@ func (doc *HTMLDocument) GetURL() values.String {
 	return values.NewString(doc.frames.Frame.URL)
 }
 
-func (doc *HTMLDocument) ClickBySelector(ctx context.Context, selector values.String) error {
-	return doc.element.ClickBySelector(ctx, selector)
-}
-
-func (doc *HTMLDocument) ClickBySelectorAll(ctx context.Context, selector values.String) error {
-	return doc.element.ClickBySelectorAll(ctx, selector)
-}
-
-func (doc *HTMLDocument) InputBySelector(ctx context.Context, selector values.String, value core.Value, delay values.Int) error {
-	return doc.input.TypeBySelector(ctx, doc.element.id.nodeID, selector, value, delay)
-}
-
-func (doc *HTMLDocument) SelectBySelector(ctx context.Context, selector values.String, value *values.Array) (*values.Array, error) {
-	return doc.input.SelectBySelector(ctx, doc.element.id.nodeID, selector, value)
-}
-
-func (doc *HTMLDocument) FocusBySelector(ctx context.Context, selector values.String) error {
-	return doc.input.FocusBySelector(ctx, doc.element.id.nodeID, selector)
-}
-
-func (doc *HTMLDocument) MoveMouseBySelector(ctx context.Context, selector values.String) error {
-	return doc.input.MoveMouseBySelector(ctx, doc.element.id.nodeID, selector)
-}
-
 func (doc *HTMLDocument) MoveMouseByXY(ctx context.Context, x, y values.Float) error {
-	return doc.input.MoveMouseByXY(ctx, x, y)
+	return doc.input.MoveMouseByXY(ctx, float64(x), float64(y))
 }
 
 func (doc *HTMLDocument) WaitForElement(ctx context.Context, selector values.String, when drivers.WaitEvent) error {
@@ -501,11 +477,11 @@ func (doc *HTMLDocument) ScrollBottom(ctx context.Context) error {
 }
 
 func (doc *HTMLDocument) ScrollBySelector(ctx context.Context, selector values.String) error {
-	return doc.input.ScrollIntoViewBySelector(ctx, selector)
+	return doc.input.ScrollIntoViewBySelector(ctx, selector.String())
 }
 
 func (doc *HTMLDocument) ScrollByXY(ctx context.Context, x, y values.Float) error {
-	return doc.input.ScrollByXY(ctx, x, y)
+	return doc.input.ScrollByXY(ctx, float64(x), float64(y))
 }
 
 func (doc *HTMLDocument) loadChildren(ctx context.Context) (value core.Value, e error) {

pkg/drivers/cdp/driver.go

@@ -2,15 +2,13 @@ package cdp
 
 import (
 	"context"
-	"sync"
-	"time"
-
 	"github.com/mafredri/cdp"
 	"github.com/mafredri/cdp/devtool"
 	"github.com/mafredri/cdp/protocol/target"
 	"github.com/mafredri/cdp/rpcc"
 	"github.com/mafredri/cdp/session"
 	"github.com/pkg/errors"
+	"sync"
 
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/runtime/logging"
@@ -18,7 +16,6 @@ import (
 
 const DriverName = "cdp"
 const BlankPageURL = "about:blank"
-const DefaultTimeout = 5000 * time.Millisecond
 
 var defaultViewport = &drivers.Viewport{
 	Width:  1600,
@@ -107,6 +104,34 @@ func (drv *Driver) Open(ctx context.Context, params drivers.Params) (drivers.HTM
 		params.Viewport = defaultViewport
 	}
 
+	if drv.options.Headers != nil && params.Headers == nil {
+		params.Headers = make(drivers.HTTPHeaders)
+	}
+
+	// set default headers
+	for k, v := range drv.options.Headers {
+		_, exists := params.Headers[k]
+
+		// do not override user's set values
+		if !exists {
+			params.Headers[k] = v
+		}
+	}
+
+	if drv.options.Cookies != nil && params.Cookies == nil {
+		params.Cookies = make(drivers.HTTPCookies)
+	}
+
+	// set default cookies
+	for k, v := range drv.options.Cookies {
+		_, exists := params.Cookies[k]
+
+		// do not override user's set values
+		if !exists {
+			params.Cookies[k] = v
+		}
+	}
+
 	return LoadHTMLPage(ctx, conn, params)
 }
 

pkg/drivers/cdp/element.go

@@ -8,6 +8,14 @@ import (
 	"strconv"
 	"strings"
 	"sync"
+	"time"
+
+	"github.com/mafredri/cdp"
+	"github.com/mafredri/cdp/protocol/dom"
+	"github.com/mafredri/cdp/protocol/runtime"
+	"github.com/pkg/errors"
+	"github.com/rs/zerolog"
+	"golang.org/x/net/html"
 
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/drivers/cdp/eval"
@@ -18,21 +26,14 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
-
-	"github.com/mafredri/cdp"
-	"github.com/mafredri/cdp/protocol/dom"
-	"github.com/mafredri/cdp/protocol/runtime"
-	"github.com/pkg/errors"
-	"github.com/rs/zerolog"
-	"golang.org/x/net/html"
 )
 
 var emptyNodeID = dom.NodeID(0)
 
 type (
 	HTMLElementIdentity struct {
-		nodeID   dom.NodeID
-		objectID runtime.RemoteObjectID
+		NodeID   dom.NodeID
+		ObjectID runtime.RemoteObjectID
 	}
 
 	HTMLElement struct {
@@ -48,7 +49,6 @@ type (
 		nodeName       values.String
 		innerHTML      *common.LazyValue
 		innerText      *common.LazyValue
-		value          core.Value
 		attributes     *common.LazyValue
 		style          *common.LazyValue
 		children       []HTMLElementIdentity
@@ -82,10 +82,6 @@ func LoadHTMLElement(
 		return nil, core.Error(core.ErrNotFound, fmt.Sprintf("element %d", nodeID))
 	}
 
-	id := HTMLElementIdentity{}
-	id.nodeID = nodeID
-	id.objectID = *obj.Object.ObjectID
-
 	return LoadHTMLElementWithID(
 		ctx,
 		logger,
@@ -93,7 +89,10 @@ func LoadHTMLElement(
 		broker,
 		input,
 		exec,
-		id,
+		HTMLElementIdentity{
+			NodeID:   nodeID,
+			ObjectID: *obj.Object.ObjectID,
+		},
 	)
 }
 
@@ -110,18 +109,12 @@ func LoadHTMLElementWithID(
 		ctx,
 		dom.
 			NewDescribeNodeArgs().
-			SetObjectID(id.objectID).
+			SetObjectID(id.ObjectID).
 			SetDepth(1),
 	)
 
 	if err != nil {
-		return nil, core.Error(err, strconv.Itoa(int(id.nodeID)))
-	}
-
-	var val string
-
-	if node.Node.Value != nil {
-		val = *node.Node.Value
+		return nil, core.Error(err, strconv.Itoa(int(id.NodeID)))
 	}
 
 	return NewHTMLElement(
@@ -133,7 +126,6 @@ func LoadHTMLElementWithID(
 		id,
 		node.Node.NodeType,
 		node.Node.NodeName,
-		val,
 		createChildrenArray(node.Node.Children),
 	), nil
 }
@@ -147,7 +139,6 @@ func NewHTMLElement(
 	id HTMLElementIdentity,
 	nodeType int,
 	nodeName string,
-	value string,
 	children []HTMLElementIdentity,
 ) *HTMLElement {
 	el := new(HTMLElement)
@@ -164,9 +155,7 @@ func NewHTMLElement(
 	el.innerText = common.NewLazyValue(el.loadInnerText)
 	el.attributes = common.NewLazyValue(el.loadAttrs)
 	el.style = common.NewLazyValue(el.parseStyle)
-	el.value = values.EmptyString
 	el.loadedChildren = common.NewLazyValue(el.loadChildren)
-	el.value = values.NewString(value)
 	el.children = children
 
 	broker.AddEventListener(events.EventReload, el.handlePageReload)
@@ -208,7 +197,7 @@ func (el *HTMLElement) MarshalJSON() ([]byte, error) {
 }
 
 func (el *HTMLElement) String() string {
-	ctx, cancel := context.WithTimeout(context.Background(), DefaultTimeout)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(drivers.DefaultWaitTimeout)*time.Millisecond)
 	defer cancel()
 
 	res, err := el.GetInnerHTML(ctx)
@@ -242,7 +231,7 @@ func (el *HTMLElement) Hash() uint64 {
 
 	h.Write([]byte(el.Type().String()))
 	h.Write([]byte(":"))
-	h.Write([]byte(strconv.Itoa(int(el.id.nodeID))))
+	h.Write([]byte(strconv.Itoa(int(el.id.NodeID))))
 
 	return h.Sum64()
 }
@@ -263,31 +252,20 @@ func (el *HTMLElement) SetIn(ctx context.Context, path []core.Value, value core.
 	return common.SetInElement(ctx, el, path, value)
 }
 
-func (el *HTMLElement) GetValue(ctx context.Context) core.Value {
+func (el *HTMLElement) GetValue(ctx context.Context) (core.Value, error) {
 	if el.IsDetached() {
-		return el.value
+		return values.None, drivers.ErrDetached
 	}
 
-	val, err := el.exec.ReadProperty(ctx, el.id.objectID, "value")
-
-	if err != nil {
-		el.logError(err).Msg("failed to get node value")
-
-		return el.value
-	}
-
-	el.value = val
-
-	return val
+	return el.exec.ReadProperty(ctx, el.id.ObjectID, "value")
 }
 
 func (el *HTMLElement) SetValue(ctx context.Context, value core.Value) error {
 	if el.IsDetached() {
-		// TODO: Return an error
-		return nil
+		return drivers.ErrDetached
 	}
 
-	return el.client.DOM.SetNodeValue(ctx, dom.NewSetNodeValueArgs(el.id.nodeID, value.String()))
+	return el.client.DOM.SetNodeValue(ctx, dom.NewSetNodeValueArgs(el.id.NodeID, value.String()))
 }
 
 func (el *HTMLElement) GetNodeType() values.Int {
@@ -395,33 +373,33 @@ func (el *HTMLElement) RemoveStyle(ctx context.Context, names ...values.String)
 	return el.SetAttribute(ctx, "style", str)
 }
 
-func (el *HTMLElement) GetAttributes(ctx context.Context) *values.Object {
+func (el *HTMLElement) GetAttributes(ctx context.Context) (*values.Object, error) {
 	val, err := el.attributes.Read(ctx)
 
 	if err != nil {
-		return values.NewObject()
+		return values.NewObject(), err
 	}
 
 	attrs := val.(*values.Object)
 
 	// returning shallow copy
-	return attrs.Copy().(*values.Object)
+	return attrs.Copy().(*values.Object), nil
 }
 
-func (el *HTMLElement) GetAttribute(ctx context.Context, name values.String) core.Value {
+func (el *HTMLElement) GetAttribute(ctx context.Context, name values.String) (core.Value, error) {
 	attrs, err := el.attributes.Read(ctx)
 
 	if err != nil {
-		return values.None
+		return values.None, err
 	}
 
 	val, found := attrs.(*values.Object).Get(name)
 
 	if !found {
-		return values.None
+		return values.None, nil
 	}
 
-	return val
+	return val, nil
 }
 
 func (el *HTMLElement) SetAttributes(ctx context.Context, attrs *values.Object) error {
@@ -439,7 +417,7 @@ func (el *HTMLElement) SetAttributes(ctx context.Context, attrs *values.Object)
 func (el *HTMLElement) SetAttribute(ctx context.Context, name, value values.String) error {
 	return el.client.DOM.SetAttributeValue(
 		ctx,
-		dom.NewSetAttributeValueArgs(el.id.nodeID, string(name), string(value)),
+		dom.NewSetAttributeValueArgs(el.id.NodeID, string(name), string(value)),
 	)
 }
 
@@ -447,7 +425,7 @@ func (el *HTMLElement) RemoveAttribute(ctx context.Context, names ...values.Stri
 	for _, name := range names {
 		err := el.client.DOM.RemoveAttribute(
 			ctx,
-			dom.NewRemoveAttributeArgs(el.id.nodeID, name.String()),
+			dom.NewRemoveAttributeArgs(el.id.NodeID, name.String()),
 		)
 
 		if err != nil {
@@ -458,79 +436,61 @@ func (el *HTMLElement) RemoveAttribute(ctx context.Context, names ...values.Stri
 	return nil
 }
 
-func (el *HTMLElement) GetChildNodes(ctx context.Context) core.Value {
+func (el *HTMLElement) GetChildNodes(ctx context.Context) (*values.Array, error) {
 	val, err := el.loadedChildren.Read(ctx)
 
 	if err != nil {
-		return values.NewArray(0)
+		return values.NewArray(0), err
 	}
 
-	return val
+	return val.Copy().(*values.Array), nil
 }
 
-func (el *HTMLElement) GetChildNode(ctx context.Context, idx values.Int) core.Value {
+func (el *HTMLElement) GetChildNode(ctx context.Context, idx values.Int) (core.Value, error) {
 	val, err := el.loadedChildren.Read(ctx)
 
 	if err != nil {
-		return values.None
+		return values.None, err
 	}
 
-	return val.(*values.Array).Get(idx)
+	return val.(*values.Array).Get(idx), nil
 }
 
-func (el *HTMLElement) QuerySelector(ctx context.Context, selector values.String) core.Value {
+func (el *HTMLElement) QuerySelector(ctx context.Context, selector values.String) (core.Value, error) {
 	if el.IsDetached() {
-		return values.None
+		return values.None, drivers.ErrDetached
 	}
 
-	// TODO: Can we use RemoteObjectID or BackendID instead of NodeId?
-	selectorArgs := dom.NewQuerySelectorArgs(el.id.nodeID, selector.String())
+	selectorArgs := dom.NewQuerySelectorArgs(el.id.NodeID, selector.String())
 	found, err := el.client.DOM.QuerySelector(ctx, selectorArgs)
 
 	if err != nil {
-		el.logError(err).
-			Str("selector", selector.String()).
-			Msg("failed to retrieve a node by selector")
-
-		return values.None
+		return values.None, err
 	}
 
 	if found.NodeID == emptyNodeID {
-		el.logError(err).
-			Str("selector", selector.String()).
-			Msg("failed to find a node by selector. returned 0 NodeID")
-
-		return values.None
+		return values.None, nil
 	}
 
 	res, err := LoadHTMLElement(ctx, el.logger, el.client, el.events, el.input, el.exec, found.NodeID)
 
 	if err != nil {
-		el.logError(err).
-			Str("selector", selector.String()).
-			Msg("failed to load a child node by selector")
-
-		return values.None
+		return values.None, nil
 	}
 
-	return res
+	return res, nil
 }
 
-func (el *HTMLElement) QuerySelectorAll(ctx context.Context, selector values.String) core.Value {
+func (el *HTMLElement) QuerySelectorAll(ctx context.Context, selector values.String) (*values.Array, error) {
 	if el.IsDetached() {
-		return values.NewArray(0)
+		return values.NewArray(0), drivers.ErrDetached
 	}
 
-	// TODO: Can we use RemoteObjectID or BackendID instead of NodeId?
-	selectorArgs := dom.NewQuerySelectorAllArgs(el.id.nodeID, selector.String())
+	selectorArgs := dom.NewQuerySelectorAllArgs(el.id.NodeID, selector.String())
 	res, err := el.client.DOM.QuerySelectorAll(ctx, selectorArgs)
 
 	if err != nil {
-		el.logError(err).
-			Str("selector", selector.String()).
-			Msg("failed to retrieve nodes by selector")
-
-		return values.None
+		return values.NewArray(0), err
 	}
 
 	arr := values.NewArray(len(res.NodeIDs))
@@ -547,10 +507,6 @@ func (el *HTMLElement) QuerySelectorAll(ctx context.Context, selector values.Str
 		childEl, err := LoadHTMLElement(ctx, el.logger, el.client, el.events, el.input, el.exec, id)
 
 		if err != nil {
-			el.logError(err).
-				Str("selector", selector.String()).
-				Msg("failed to load nodes by selector")
-
 			// close elements that are already loaded, but won't be used because of the error
 			if arr.Length() > 0 {
 				arr.ForEach(func(e core.Value, _ int) bool {
@@ -560,13 +516,13 @@ func (el *HTMLElement) QuerySelectorAll(ctx context.Context, selector values.Str
 				})
 			}
 
-			return values.None
+			return values.NewArray(0), err
 		}
 
 		arr.Push(childEl)
 	}
 
-	return arr
+	return arr, nil
 }
 
 func (el *HTMLElement) XPath(ctx context.Context, expression values.String) (result core.Value, err error) {
@@ -578,7 +534,7 @@ func (el *HTMLElement) XPath(ctx context.Context, expression values.String) (res
 
 	out, err := el.exec.EvalWithArgumentsAndReturnReference(ctx, templates.XPath(),
 		runtime.CallArgument{
-			ObjectID: &el.id.objectID,
+			ObjectID: &el.id.ObjectID,
 		},
 		runtime.CallArgument{
 			Value: json.RawMessage(exp),
@@ -657,8 +613,8 @@ func (el *HTMLElement) XPath(ctx context.Context, expression values.String) (res
 				el.input,
 				el.exec,
 				HTMLElementIdentity{
-					nodeID:   repl.NodeID,
-					objectID: *descr.Value.ObjectID,
+					NodeID:   repl.NodeID,
+					ObjectID: *descr.Value.ObjectID,
 				},
 			)
 
@@ -689,8 +645,8 @@ func (el *HTMLElement) XPath(ctx context.Context, expression values.String) (res
 			el.input,
 			el.exec,
 			HTMLElementIdentity{
-				nodeID:   repl.NodeID,
-				objectID: *out.ObjectID,
+				NodeID:   repl.NodeID,
+				ObjectID: *out.ObjectID,
 			},
 		)
 	default:
@@ -737,7 +693,7 @@ func (el *HTMLElement) GetInnerTextBySelector(ctx context.Context, selector valu
 		ctx,
 		templates.GetInnerTextBySelector(),
 		runtime.CallArgument{
-			ObjectID: &el.id.objectID,
+			ObjectID: &el.id.ObjectID,
 		},
 		runtime.CallArgument{
 			Value: sel,
@@ -772,7 +728,7 @@ func (el *HTMLElement) SetInnerTextBySelector(ctx context.Context, selector, inn
 		ctx,
 		templates.SetInnerTextBySelector(),
 		runtime.CallArgument{
-			ObjectID: &el.id.objectID,
+			ObjectID: &el.id.ObjectID,
 		},
 		runtime.CallArgument{
 			Value: sel,
@@ -798,7 +754,7 @@ func (el *HTMLElement) GetInnerTextBySelectorAll(ctx context.Context, selector v
 		ctx,
 		templates.GetInnerTextBySelectorAll(),
 		runtime.CallArgument{
-			ObjectID: &el.id.objectID,
+			ObjectID: &el.id.ObjectID,
 		},
 		runtime.CallArgument{
 			Value: sel,
@@ -857,7 +813,7 @@ func (el *HTMLElement) GetInnerHTMLBySelector(ctx context.Context, selector valu
 		ctx,
 		templates.GetInnerHTMLBySelector(),
 		runtime.CallArgument{
-			ObjectID: &el.id.objectID,
+			ObjectID: &el.id.ObjectID,
 		},
 		runtime.CallArgument{
 			Value: sel,
@@ -892,7 +848,7 @@ func (el *HTMLElement) SetInnerHTMLBySelector(ctx context.Context, selector, inn
 		ctx,
 		templates.SetInnerHTMLBySelector(),
 		runtime.CallArgument{
-			ObjectID: &el.id.objectID,
+			ObjectID: &el.id.ObjectID,
 		},
 		runtime.CallArgument{
 			Value: sel,
@@ -918,7 +874,7 @@ func (el *HTMLElement) GetInnerHTMLBySelectorAll(ctx context.Context, selector v
 		ctx,
 		templates.GetInnerHTMLBySelectorAll(),
 		runtime.CallArgument{
-			ObjectID: &el.id.objectID,
+			ObjectID: &el.id.ObjectID,
 		},
 		runtime.CallArgument{
 			Value: sel,
@@ -938,24 +894,19 @@ func (el *HTMLElement) GetInnerHTMLBySelectorAll(ctx context.Context, selector v
 	return arr, nil
 }
 
-func (el *HTMLElement) CountBySelector(ctx context.Context, selector values.String) values.Int {
+func (el *HTMLElement) CountBySelector(ctx context.Context, selector values.String) (values.Int, error) {
 	if el.IsDetached() {
-		return values.ZeroInt
+		return values.ZeroInt, drivers.ErrDetached
 	}
 
-	// TODO: Can we use RemoteObjectID or BackendID instead of NodeId?
-	selectorArgs := dom.NewQuerySelectorAllArgs(el.id.nodeID, selector.String())
+	selectorArgs := dom.NewQuerySelectorAllArgs(el.id.NodeID, selector.String())
 	res, err := el.client.DOM.QuerySelectorAll(ctx, selectorArgs)
 
 	if err != nil {
-		el.logError(err).
-			Str("selector", selector.String()).
-			Msg("failed to retrieve nodes by selector")
-
-		return values.ZeroInt
+		return values.ZeroInt, err
 	}
 
-	return values.NewInt(len(res.NodeIDs))
+	return values.NewInt(len(res.NodeIDs)), nil
 }
 
 func (el *HTMLElement) ExistsBySelector(ctx context.Context, selector values.String) (values.Boolean, error) {
@@ -964,7 +915,7 @@ func (el *HTMLElement) ExistsBySelector(ctx context.Context, selector values.Str
 	}
 
 	// TODO: Can we use RemoteObjectID or BackendID instead of NodeId?
-	selectorArgs := dom.NewQuerySelectorArgs(el.id.nodeID, selector.String())
+	selectorArgs := dom.NewQuerySelectorArgs(el.id.NodeID, selector.String())
 	res, err := el.client.DOM.QuerySelector(ctx, selectorArgs)
 
 	if err != nil {
@@ -981,7 +932,11 @@ func (el *HTMLElement) ExistsBySelector(ctx context.Context, selector values.Str
 func (el *HTMLElement) WaitForClass(ctx context.Context, class values.String, when drivers.WaitEvent) error {
 	task := events.NewWaitTask(
 		func(ctx2 context.Context) (core.Value, error) {
-			current := el.GetAttribute(ctx2, "class")
+			current, err := el.GetAttribute(ctx2, "class")
+
+			if err != nil {
+				return values.None, nil
+			}
 
 			if current.Type() != types.String {
 				return values.None, nil
@@ -1033,7 +988,7 @@ func (el *HTMLElement) WaitForAttribute(
 	when drivers.WaitEvent,
 ) error {
 	task := events.NewValueWaitTask(when, value, func(ctx context.Context) (core.Value, error) {
-		return el.GetAttribute(ctx, name), nil
+		return el.GetAttribute(ctx, name)
 	}, events.DefaultPolling)
 
 	_, err := task.Run(ctx)
@@ -1051,16 +1006,16 @@ func (el *HTMLElement) WaitForStyle(ctx context.Context, name values.String, val
 	return err
 }
 
-func (el *HTMLElement) Click(ctx context.Context) error {
-	return el.input.Click(ctx, el.id.objectID)
+func (el *HTMLElement) Click(ctx context.Context, count values.Int) error {
+	return el.input.Click(ctx, el.id.ObjectID, int(count))
 }
 
-func (el *HTMLElement) ClickBySelector(ctx context.Context, selector values.String) error {
-	return el.input.ClickBySelector(ctx, el.id.nodeID, selector)
+func (el *HTMLElement) ClickBySelector(ctx context.Context, selector values.String, count values.Int) error {
+	return el.input.ClickBySelector(ctx, el.id.NodeID, selector.String(), int(count))
 }
 
-func (el *HTMLElement) ClickBySelectorAll(ctx context.Context, selector values.String) error {
-	return el.input.ClickBySelectorAll(ctx, el.id.nodeID, selector)
+func (el *HTMLElement) ClickBySelectorAll(ctx context.Context, selector values.String, count values.Int) error {
+	return el.input.ClickBySelectorAll(ctx, el.id.NodeID, selector.String(), int(count))
 }
 
 func (el *HTMLElement) Input(ctx context.Context, value core.Value, delay values.Int) error {
@@ -1068,23 +1023,63 @@ func (el *HTMLElement) Input(ctx context.Context, value core.Value, delay values
 		return core.Error(core.ErrInvalidOperation, "element is not an <input> element.")
 	}
 
-	return el.input.Type(ctx, el.id.objectID, value, delay)
+	return el.input.Type(ctx, el.id.ObjectID, input.TypeParams{
+		Text:  value.String(),
+		Clear: false,
+		Delay: time.Duration(delay) * time.Millisecond,
+	})
+}
+
+func (el *HTMLElement) InputBySelector(ctx context.Context, selector values.String, value core.Value, delay values.Int) error {
+	return el.input.TypeBySelector(ctx, el.id.NodeID, selector.String(), input.TypeParams{
+		Text:  value.String(),
+		Clear: false,
+		Delay: time.Duration(delay) * time.Millisecond,
+	})
+}
+
+func (el *HTMLElement) Clear(ctx context.Context) error {
+	return el.input.Clear(ctx, el.id.ObjectID)
+}
+
+func (el *HTMLElement) ClearBySelector(ctx context.Context, selector values.String) error {
+	return el.input.ClearBySelector(ctx, el.id.NodeID, selector.String())
 }
 
 func (el *HTMLElement) Select(ctx context.Context, value *values.Array) (*values.Array, error) {
-	return el.input.Select(ctx, el.id.objectID, value)
+	return el.input.Select(ctx, el.id.ObjectID, value)
+}
+
+func (el *HTMLElement) SelectBySelector(ctx context.Context, selector values.String, value *values.Array) (*values.Array, error) {
+	return el.input.SelectBySelector(ctx, el.id.NodeID, selector.String(), value)
 }
 
 func (el *HTMLElement) ScrollIntoView(ctx context.Context) error {
-	return el.input.ScrollIntoView(ctx, el.id.objectID)
+	return el.input.ScrollIntoView(ctx, el.id.ObjectID)
 }
 
 func (el *HTMLElement) Focus(ctx context.Context) error {
-	return el.input.Focus(ctx, el.id.objectID)
+	return el.input.Focus(ctx, el.id.ObjectID)
+}
+
+func (el *HTMLElement) FocusBySelector(ctx context.Context, selector values.String) error {
+	return el.input.FocusBySelector(ctx, el.id.NodeID, selector.String())
+}
+
+func (el *HTMLElement) Blur(ctx context.Context) error {
+	return el.input.Blur(ctx, el.id.ObjectID)
+}
+
+func (el *HTMLElement) BlurBySelector(ctx context.Context, selector values.String) error {
+	return el.input.BlurBySelector(ctx, el.id.ObjectID, selector.String())
 }
 
 func (el *HTMLElement) Hover(ctx context.Context) error {
-	return el.input.MoveMouse(ctx, el.id.objectID)
+	return el.input.MoveMouse(ctx, el.id.ObjectID)
+}
+
+func (el *HTMLElement) HoverBySelector(ctx context.Context, selector values.String) error {
+	return el.input.MoveMouseBySelector(ctx, el.id.NodeID, selector.String())
 }
 
 func (el *HTMLElement) IsDetached() values.Boolean {
@@ -1139,7 +1134,7 @@ func (el *HTMLElement) loadInnerText(ctx context.Context) (core.Value, error) {
 }
 
 func (el *HTMLElement) loadAttrs(ctx context.Context) (core.Value, error) {
-	repl, err := el.client.DOM.GetAttributes(ctx, dom.NewGetAttributesArgs(el.id.nodeID))
+	repl, err := el.client.DOM.GetAttributes(ctx, dom.NewGetAttributesArgs(el.id.NodeID))
 
 	if err != nil {
 		return values.None, err
@@ -1163,7 +1158,7 @@ func (el *HTMLElement) loadChildren(ctx context.Context) (core.Value, error) {
 			el.events,
 			el.input,
 			el.exec,
-			childID.nodeID,
+			childID.NodeID,
 		)
 
 		if err != nil {
@@ -1179,7 +1174,11 @@ func (el *HTMLElement) loadChildren(ctx context.Context) (core.Value, error) {
 }
 
 func (el *HTMLElement) parseStyle(ctx context.Context) (core.Value, error) {
-	value := el.GetAttribute(ctx, "style")
+	value, err := el.GetAttribute(ctx, "style")
+
+	if err != nil {
+		return values.None, err
+	}
 
 	if value == values.None {
 		return values.NewObject(), nil
@@ -1205,7 +1204,7 @@ func (el *HTMLElement) handleAttrModified(ctx context.Context, message interface
 	}
 
 	// it's not for this el
-	if reply.NodeID != el.id.nodeID {
+	if reply.NodeID != el.id.NodeID {
 		return
 	}
 
@@ -1215,6 +1214,10 @@ func (el *HTMLElement) handleAttrModified(ctx context.Context, message interface
 		return
 	}
 
+	if el.IsDetached() {
+		return
+	}
+
 	el.attributes.Mutate(ctx, func(v core.Value, err error) {
 		if err != nil {
 			el.logError(err).Msg("failed to update element")
@@ -1245,7 +1248,7 @@ func (el *HTMLElement) handleAttrRemoved(ctx context.Context, message interface{
 	}
 
 	// it's not for this el
-	if reply.NodeID != el.id.nodeID {
+	if reply.NodeID != el.id.NodeID {
 		return
 	}
 
@@ -1255,6 +1258,10 @@ func (el *HTMLElement) handleAttrRemoved(ctx context.Context, message interface{
 		return
 	}
 
+	if el.IsDetached() {
+		return
+	}
+
 	el.attributes.Mutate(ctx, func(v core.Value, err error) {
 		if err != nil {
 			el.logError(err).Msg("failed to update element")
@@ -1283,13 +1290,20 @@ func (el *HTMLElement) handleChildrenCountChanged(ctx context.Context, message i
 		return
 	}
 
-	if reply.NodeID != el.id.nodeID {
+	if reply.NodeID != el.id.NodeID {
 		return
 	}
 
+	if el.IsDetached() {
+		return
+	}
+
+	el.mu.Lock()
+	defer el.mu.Unlock()
+
 	node, err := el.client.DOM.DescribeNode(
 		ctx,
-		dom.NewDescribeNodeArgs().SetObjectID(el.id.objectID),
+		dom.NewDescribeNodeArgs().SetObjectID(el.id.ObjectID),
 	)
 
 	if err != nil {
@@ -1298,9 +1312,6 @@ func (el *HTMLElement) handleChildrenCountChanged(ctx context.Context, message i
 		return
 	}
 
-	el.mu.Lock()
-	defer el.mu.Unlock()
-
 	el.children = createChildrenArray(node.Node.Children)
 }
 
@@ -1311,7 +1322,7 @@ func (el *HTMLElement) handleChildInserted(ctx context.Context, message interfac
 		return
 	}
 
-	if reply.ParentNodeID != el.id.nodeID {
+	if reply.ParentNodeID != el.id.NodeID {
 		return
 	}
 
@@ -1319,11 +1330,15 @@ func (el *HTMLElement) handleChildInserted(ctx context.Context, message interfac
 	prevID := reply.PreviousNodeID
 	nextID := reply.Node.NodeID
 
+	if el.IsDetached() {
+		return
+	}
+
 	el.mu.Lock()
 	defer el.mu.Unlock()
 
 	for idx, id := range el.children {
-		if id.nodeID == prevID {
+		if id.NodeID == prevID {
 			targetIDx = idx
 			break
 		}
@@ -1334,7 +1349,7 @@ func (el *HTMLElement) handleChildInserted(ctx context.Context, message interfac
 	}
 
 	nextIdentity := HTMLElementIdentity{
-		nodeID: reply.Node.NodeID,
+		NodeID: reply.Node.NodeID,
 	}
 
 	arr := el.children
@@ -1368,18 +1383,22 @@ func (el *HTMLElement) handleChildRemoved(ctx context.Context, message interface
 		return
 	}
 
-	if reply.ParentNodeID != el.id.nodeID {
+	if reply.ParentNodeID != el.id.NodeID {
 		return
 	}
 
 	targetIDx := -1
 	targetID := reply.NodeID
 
+	if el.IsDetached() {
+		return
+	}
+
 	el.mu.Lock()
 	defer el.mu.Unlock()
 
 	for idx, id := range el.children {
-		if id.nodeID == targetID {
+		if id.NodeID == targetID {
 			targetIDx = idx
 			break
 		}
@@ -1401,7 +1420,7 @@ func (el *HTMLElement) handleChildRemoved(ctx context.Context, message interface
 			el.logger.Error().
 				Timestamp().
 				Err(err).
-				Int("nodeID", int(el.id.nodeID)).
+				Int("nodeID", int(el.id.NodeID)).
 				Msg("failed to update element")
 
 			return
@@ -1419,7 +1438,7 @@ func (el *HTMLElement) logError(err error) *zerolog.Event {
 	return el.logger.
 		Error().
 		Timestamp().
-		Int("nodeID", int(el.id.nodeID)).
-		Str("objectID", string(el.id.objectID)).
+		Int("nodeID", int(el.id.NodeID)).
+		Str("objectID", string(el.id.ObjectID)).
 		Err(err)
 }

pkg/drivers/cdp/events/broker.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"reflect"
 	"sync"
+	"time"
 
 	"github.com/mafredri/cdp/protocol/dom"
 	"github.com/mafredri/cdp/protocol/page"
@@ -289,7 +290,7 @@ func (broker *EventBroker) emit(ctx context.Context, event Event, message interf
 		case <-ctx.Done():
 			return
 		default:
-			ctx2, fn := drivers.WithDefaultTimeout(ctx)
+			ctx2, fn := context.WithTimeout(ctx, time.Duration(drivers.DefaultTimeout)*time.Millisecond)
 
 			listener(ctx2, message)
 

pkg/drivers/cdp/helpers.go

@@ -71,10 +71,10 @@ func parseAttrs(attrs []string) *values.Object {
 func setInnerHTML(ctx context.Context, client *cdp.Client, exec *eval.ExecutionContext, id HTMLElementIdentity, innerHTML values.String) error {
 	var objID *runtime.RemoteObjectID
 
-	if id.objectID != "" {
-		objID = &id.objectID
+	if id.ObjectID != "" {
+		objID = &id.ObjectID
 	} else {
-		repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.nodeID))
+		repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.NodeID))
 
 		if err != nil {
 			return err
@@ -110,10 +110,10 @@ func getInnerHTML(ctx context.Context, client *cdp.Client, exec *eval.ExecutionC
 	if nodeType != html.DocumentNode {
 		var objID runtime.RemoteObjectID
 
-		if id.objectID != "" {
-			objID = id.objectID
+		if id.ObjectID != "" {
+			objID = id.ObjectID
 		} else {
-			repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.nodeID))
+			repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.NodeID))
 
 			if err != nil {
 				return "", err
@@ -147,10 +147,10 @@ func getInnerHTML(ctx context.Context, client *cdp.Client, exec *eval.ExecutionC
 func setInnerText(ctx context.Context, client *cdp.Client, exec *eval.ExecutionContext, id HTMLElementIdentity, innerText values.String) error {
 	var objID *runtime.RemoteObjectID
 
-	if id.objectID != "" {
-		objID = &id.objectID
+	if id.ObjectID != "" {
+		objID = &id.ObjectID
 	} else {
-		repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.nodeID))
+		repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.NodeID))
 
 		if err != nil {
 			return err
@@ -186,10 +186,10 @@ func getInnerText(ctx context.Context, client *cdp.Client, exec *eval.ExecutionC
 	if nodeType != html.DocumentNode {
 		var objID runtime.RemoteObjectID
 
-		if id.objectID != "" {
-			objID = id.objectID
+		if id.ObjectID != "" {
+			objID = id.ObjectID
 		} else {
-			repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.nodeID))
+			repl, err := client.DOM.ResolveNode(ctx, dom.NewResolveNodeArgs().SetNodeID(id.NodeID))
 
 			if err != nil {
 				return "", err
@@ -238,7 +238,7 @@ func createChildrenArray(nodes []dom.Node) []HTMLElementIdentity {
 	for idx, child := range nodes {
 		child := child
 		children[idx] = HTMLElementIdentity{
-			nodeID: child.NodeID,
+			NodeID: child.NodeID,
 		}
 	}
 

pkg/drivers/cdp/input/keyboard.go

@@ -2,15 +2,45 @@ package input
 
 import (
 	"context"
+	"github.com/pkg/errors"
 	"time"
 
 	"github.com/mafredri/cdp"
 	"github.com/mafredri/cdp/protocol/input"
 )
 
-type Keyboard struct {
-	client *cdp.Client
-}
+const DefaultDelay = 25
+
+type (
+	KeyboardModifier int
+
+	KeyboardLocation int
+
+	KeyboardKey struct {
+		KeyCode  int
+		Key      string
+		Code     string
+		Modifier KeyboardModifier
+		Location KeyboardLocation
+	}
+
+	Keyboard struct {
+		client *cdp.Client
+	}
+)
+
+const (
+	KeyboardModifierNone  KeyboardModifier = 0
+	KeyboardModifierAlt   KeyboardModifier = 1
+	KeyboardModifierCtrl  KeyboardModifier = 2
+	KeyboardModifierCmd   KeyboardModifier = 4
+	KeyboardModifierShift KeyboardModifier = 8
+
+	// 1=Left, 2=Right
+	KeyboardLocationNone  KeyboardLocation = 0
+	KeyboardLocationLeft  KeyboardLocation = 1
+	KeyboardLocationRight KeyboardLocation = 2
+)
 
 func NewKeyboard(client *cdp.Client) *Keyboard {
 	return &Keyboard{client}
@@ -32,7 +62,7 @@ func (k *Keyboard) Up(ctx context.Context, char string) error {
 	)
 }
 
-func (k *Keyboard) Type(ctx context.Context, text string, delay int) error {
+func (k *Keyboard) Type(ctx context.Context, text string, delay time.Duration) error {
 	for _, ch := range text {
 		ch := string(ch)
 
@@ -40,7 +70,7 @@ func (k *Keyboard) Type(ctx context.Context, text string, delay int) error {
 			return err
 		}
 
-		releaseDelay := randomDuration(delay)
+		releaseDelay := randomDuration(int(delay))
 		time.Sleep(releaseDelay)
 
 		if err := k.Up(ctx, ch); err != nil {
@@ -50,3 +80,34 @@ func (k *Keyboard) Type(ctx context.Context, text string, delay int) error {
 
 	return nil
 }
+
+func (k *Keyboard) Press(ctx context.Context, name string) error {
+	key, found := usKeyboardLayout[name]
+
+	if !found {
+		return errors.New("invalid key")
+	}
+
+	err := k.client.Input.DispatchKeyEvent(
+		ctx,
+		input.NewDispatchKeyEventArgs("keyDown").
+			SetCode(key.Code).
+			SetKey(key.Key).
+			SetWindowsVirtualKeyCode(key.KeyCode),
+	)
+
+	if err != nil {
+		return err
+	}
+
+	releaseDelay := randomDuration(DefaultDelay)
+	time.Sleep(releaseDelay)
+
+	return k.client.Input.DispatchKeyEvent(
+		ctx,
+		input.NewDispatchKeyEventArgs("keyUp").
+			SetCode(key.Code).
+			SetKey(key.Key).
+			SetWindowsVirtualKeyCode(key.KeyCode),
+	)
+}

pkg/drivers/cdp/input/manager.go

@@ -8,18 +8,27 @@ import (
 	"github.com/mafredri/cdp/protocol/dom"
 	"github.com/mafredri/cdp/protocol/runtime"
 
+	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/drivers/cdp/eval"
 	"github.com/MontFerret/ferret/pkg/drivers/cdp/templates"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-type Manager struct {
-	client   *cdp.Client
-	exec     *eval.ExecutionContext
-	keyboard *Keyboard
-	mouse    *Mouse
-}
+type (
+	TypeParams struct {
+		Text  string
+		Clear bool
+		Delay time.Duration
+	}
+
+	Manager struct {
+		client   *cdp.Client
+		exec     *eval.ExecutionContext
+		keyboard *Keyboard
+		mouse    *Mouse
+	}
+)
 
 func NewManager(
 	client *cdp.Client,
@@ -61,14 +70,14 @@ func (m *Manager) ScrollIntoView(ctx context.Context, objectID runtime.RemoteObj
 	)
 }
 
-func (m *Manager) ScrollIntoViewBySelector(ctx context.Context, selector values.String) error {
-	return m.exec.Eval(ctx, templates.ScrollIntoViewBySelector(selector.String()))
+func (m *Manager) ScrollIntoViewBySelector(ctx context.Context, selector string) error {
+	return m.exec.Eval(ctx, templates.ScrollIntoViewBySelector(selector))
 }
 
-func (m *Manager) ScrollByXY(ctx context.Context, x, y values.Float) error {
+func (m *Manager) ScrollByXY(ctx context.Context, x, y float64) error {
 	return m.exec.Eval(
 		ctx,
-		templates.Scroll(eval.ParamFloat(float64(x)), eval.ParamFloat(float64(y))),
+		templates.Scroll(eval.ParamFloat(x), eval.ParamFloat(y)),
 	)
 }
 
@@ -82,14 +91,14 @@ func (m *Manager) Focus(ctx context.Context, objectID runtime.RemoteObjectID) er
 	return m.client.DOM.Focus(ctx, dom.NewFocusArgs().SetObjectID(objectID))
 }
 
-func (m *Manager) FocusBySelector(ctx context.Context, parentNodeID dom.NodeID, selector values.String) error {
+func (m *Manager) FocusBySelector(ctx context.Context, parentNodeID dom.NodeID, selector string) error {
 	err := m.ScrollIntoViewBySelector(ctx, selector)
 
 	if err != nil {
 		return err
 	}
 
-	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector.String()))
+	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector))
 
 	if err != nil {
 		return nil
@@ -98,6 +107,18 @@ func (m *Manager) FocusBySelector(ctx context.Context, parentNodeID dom.NodeID,
 	return m.client.DOM.Focus(ctx, dom.NewFocusArgs().SetNodeID(found.NodeID))
 }
 
+func (m *Manager) Blur(ctx context.Context, objectID runtime.RemoteObjectID) error {
+	return m.exec.EvalWithArguments(ctx, templates.Blur(), runtime.CallArgument{
+		ObjectID: &objectID,
+	})
+}
+
+func (m *Manager) BlurBySelector(ctx context.Context, parentObjectID runtime.RemoteObjectID, selector string) error {
+	return m.exec.EvalWithArguments(ctx, templates.BlurBySelector(selector), runtime.CallArgument{
+		ObjectID: &parentObjectID,
+	})
+}
+
 func (m *Manager) MoveMouse(ctx context.Context, objectID runtime.RemoteObjectID) error {
 	if err := m.ScrollIntoView(ctx, objectID); err != nil {
 		return err
@@ -112,12 +133,12 @@ func (m *Manager) MoveMouse(ctx context.Context, objectID runtime.RemoteObjectID
 	return m.mouse.Move(ctx, q.X, q.Y)
 }
 
-func (m *Manager) MoveMouseBySelector(ctx context.Context, parentNodeID dom.NodeID, selector values.String) error {
+func (m *Manager) MoveMouseBySelector(ctx context.Context, parentNodeID dom.NodeID, selector string) error {
 	if err := m.ScrollIntoViewBySelector(ctx, selector); err != nil {
 		return err
 	}
 
-	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector.String()))
+	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector))
 
 	if err != nil {
 		return err
@@ -132,15 +153,15 @@ func (m *Manager) MoveMouseBySelector(ctx context.Context, parentNodeID dom.Node
 	return m.mouse.Move(ctx, q.X, q.Y)
 }
 
-func (m *Manager) MoveMouseByXY(ctx context.Context, x, y values.Float) error {
+func (m *Manager) MoveMouseByXY(ctx context.Context, x, y float64) error {
 	if err := m.ScrollByXY(ctx, x, y); err != nil {
 		return err
 	}
 
-	return m.mouse.Move(ctx, float64(x), float64(y))
+	return m.mouse.Move(ctx, x, y)
 }
 
-func (m *Manager) Click(ctx context.Context, objectID runtime.RemoteObjectID) error {
+func (m *Manager) Click(ctx context.Context, objectID runtime.RemoteObjectID, count int) error {
 	if err := m.ScrollIntoView(ctx, objectID); err != nil {
 		return err
 	}
@@ -151,19 +172,21 @@ func (m *Manager) Click(ctx context.Context, objectID runtime.RemoteObjectID) er
 		return err
 	}
 
-	if err := m.mouse.Click(ctx, points.X, points.Y, 50); err != nil {
+	delay := time.Duration(drivers.DefaultMouseDelay) * time.Millisecond
+
+	if err := m.mouse.ClickWithCount(ctx, points.X, points.Y, delay, count); err != nil {
 		return nil
 	}
 
 	return nil
 }
 
-func (m *Manager) ClickBySelector(ctx context.Context, parentNodeID dom.NodeID, selector values.String) error {
+func (m *Manager) ClickBySelector(ctx context.Context, parentNodeID dom.NodeID, selector string, count int) error {
 	if err := m.ScrollIntoViewBySelector(ctx, selector); err != nil {
 		return err
 	}
 
-	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector.String()))
+	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector))
 
 	if err != nil {
 		return err
@@ -175,29 +198,30 @@ func (m *Manager) ClickBySelector(ctx context.Context, parentNodeID dom.NodeID,
 		return err
 	}
 
-	if err := m.mouse.Click(ctx, points.X, points.Y, 50); err != nil {
+	delay := time.Duration(drivers.DefaultMouseDelay) * time.Millisecond
+
+	if err := m.mouse.ClickWithCount(ctx, points.X, points.Y, delay, count); err != nil {
 		return nil
 	}
 
 	return nil
 }
 
-func (m *Manager) ClickBySelectorAll(ctx context.Context, parentNodeID dom.NodeID, selector values.String) error {
+func (m *Manager) ClickBySelectorAll(ctx context.Context, parentNodeID dom.NodeID, selector string, count int) error {
 	if err := m.ScrollIntoViewBySelector(ctx, selector); err != nil {
 		return err
 	}
 
-	found, err := m.client.DOM.QuerySelectorAll(ctx, dom.NewQuerySelectorAllArgs(parentNodeID, selector.String()))
+	found, err := m.client.DOM.QuerySelectorAll(ctx, dom.NewQuerySelectorAllArgs(parentNodeID, selector))
 
 	if err != nil {
 		return err
 	}
 
 	for _, nodeID := range found.NodeIDs {
-		_, min := core.NumberBoundaries(100)
-		beforeTypeDelay := time.Duration(min)
+		beforeTypeDelay := time.Duration(core.NumberLowerBoundary(drivers.DefaultMouseDelay*10)) * time.Millisecond
 
-		time.Sleep(beforeTypeDelay * time.Millisecond)
+		time.Sleep(beforeTypeDelay)
 
 		points, err := GetClickablePointByNodeID(ctx, m.client, nodeID)
 
@@ -205,7 +229,9 @@ func (m *Manager) ClickBySelectorAll(ctx context.Context, parentNodeID dom.NodeI
 			return err
 		}
 
-		if err := m.mouse.Click(ctx, points.X, points.Y, 50); err != nil {
+		delay := time.Duration(drivers.DefaultMouseDelay) * time.Millisecond
+
+		if err := m.mouse.ClickWithCount(ctx, points.X, points.Y, delay, count); err != nil {
 			return nil
 		}
 	}
@@ -213,7 +239,7 @@ func (m *Manager) ClickBySelectorAll(ctx context.Context, parentNodeID dom.NodeI
 	return nil
 }
 
-func (m *Manager) Type(ctx context.Context, objectID runtime.RemoteObjectID, text core.Value, delay values.Int) error {
+func (m *Manager) Type(ctx context.Context, objectID runtime.RemoteObjectID, params TypeParams) error {
 	err := m.ScrollIntoView(ctx, objectID)
 
 	if err != nil {
@@ -226,22 +252,34 @@ func (m *Manager) Type(ctx context.Context, objectID runtime.RemoteObjectID, tex
 		return err
 	}
 
-	_, min := core.NumberBoundaries(float64(delay))
-	beforeTypeDelay := time.Duration(min)
+	if params.Clear {
+		points, err := GetClickablePointByObjectID(ctx, m.client, objectID)
 
-	time.Sleep(beforeTypeDelay * time.Millisecond)
+		if err != nil {
+			return err
+		}
 
-	return m.keyboard.Type(ctx, text.String(), int(delay))
+		if err := m.ClearByXY(ctx, points); err != nil {
+			return err
+		}
+	}
+
+	d := core.NumberLowerBoundary(float64(params.Delay))
+	beforeTypeDelay := time.Duration(d)
+
+	time.Sleep(beforeTypeDelay)
+
+	return m.keyboard.Type(ctx, params.Text, params.Delay)
 }
 
-func (m *Manager) TypeBySelector(ctx context.Context, parentNodeID dom.NodeID, selector values.String, text core.Value, delay values.Int) error {
+func (m *Manager) TypeBySelector(ctx context.Context, parentNodeID dom.NodeID, selector string, params TypeParams) error {
 	err := m.ScrollIntoViewBySelector(ctx, selector)
 
 	if err != nil {
 		return err
 	}
 
-	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector.String()))
+	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector))
 
 	if err != nil {
 		return err
@@ -253,12 +291,85 @@ func (m *Manager) TypeBySelector(ctx context.Context, parentNodeID dom.NodeID, s
 		return err
 	}
 
-	_, min := core.NumberBoundaries(float64(delay))
-	beforeTypeDelay := time.Duration(min)
+	if params.Clear {
+		points, err := GetClickablePointByNodeID(ctx, m.client, found.NodeID)
 
-	time.Sleep(beforeTypeDelay * time.Millisecond)
+		if err != nil {
+			return err
+		}
 
-	return m.keyboard.Type(ctx, text.String(), int(delay))
+		if err := m.ClearByXY(ctx, points); err != nil {
+			return err
+		}
+	}
+
+	d := core.NumberLowerBoundary(float64(params.Delay))
+	beforeTypeDelay := time.Duration(d)
+
+	time.Sleep(beforeTypeDelay)
+
+	return m.keyboard.Type(ctx, params.Text, params.Delay)
+}
+
+func (m *Manager) Clear(ctx context.Context, objectID runtime.RemoteObjectID) error {
+	err := m.ScrollIntoView(ctx, objectID)
+
+	if err != nil {
+		return err
+	}
+
+	points, err := GetClickablePointByObjectID(ctx, m.client, objectID)
+
+	if err != nil {
+		return err
+	}
+
+	err = m.client.DOM.Focus(ctx, dom.NewFocusArgs().SetObjectID(objectID))
+
+	if err != nil {
+		return err
+	}
+
+	return m.ClearByXY(ctx, points)
+}
+
+func (m *Manager) ClearBySelector(ctx context.Context, parentNodeID dom.NodeID, selector string) error {
+	err := m.ScrollIntoViewBySelector(ctx, selector)
+
+	if err != nil {
+		return err
+	}
+
+	found, err := m.client.DOM.QuerySelector(ctx, dom.NewQuerySelectorArgs(parentNodeID, selector))
+
+	if err != nil {
+		return err
+	}
+
+	points, err := GetClickablePointByNodeID(ctx, m.client, found.NodeID)
+
+	if err != nil {
+		return err
+	}
+
+	err = m.client.DOM.Focus(ctx, dom.NewFocusArgs().SetNodeID(found.NodeID))
+
+	if err != nil {
+		return err
+	}
+
+	return m.ClearByXY(ctx, points)
+}
+
+func (m *Manager) ClearByXY(ctx context.Context, points Quad) error {
+	delay := time.Duration(drivers.DefaultMouseDelay) * time.Millisecond
+	err := m.mouse.ClickWithCount(ctx, points.X, points.Y, delay, 2)
+
+	if err != nil {
+		return err
+	}
+
+	return m.keyboard.Press(ctx, "Backspace")
 }
 
 func (m *Manager) Select(ctx context.Context, objectID runtime.RemoteObjectID, value *values.Array) (*values.Array, error) {
@@ -283,12 +394,12 @@ func (m *Manager) Select(ctx context.Context, objectID runtime.RemoteObjectID, v
 	return arr, nil
 }
 
-func (m *Manager) SelectBySelector(ctx context.Context, parentNodeID dom.NodeID, selector values.String, value *values.Array) (*values.Array, error) {
+func (m *Manager) SelectBySelector(ctx context.Context, parentNodeID dom.NodeID, selector string, value *values.Array) (*values.Array, error) {
 	if err := m.FocusBySelector(ctx, parentNodeID, selector); err != nil {
 		return values.NewArray(0), err
 	}
 
-	res, err := m.exec.EvalWithReturnValue(ctx, templates.SelectBySelector(selector.String(), value.String()))
+	res, err := m.exec.EvalWithReturnValue(ctx, templates.SelectBySelector(selector, value.String()))
 
 	if err != nil {
 		return values.NewArray(0), err

pkg/drivers/cdp/input/mouse.go

@@ -18,37 +18,47 @@ func NewMouse(client *cdp.Client) *Mouse {
 	return &Mouse{client, 0, 0}
 }
 
-func (m *Mouse) Click(ctx context.Context, x, y float64, delay int) error {
+func (m *Mouse) Click(ctx context.Context, x, y float64, delay time.Duration) error {
+	return m.ClickWithCount(ctx, x, y, delay, 1)
+}
+
+func (m *Mouse) ClickWithCount(ctx context.Context, x, y float64, delay time.Duration, count int) error {
 	if err := m.Move(ctx, x, y); err != nil {
 		return err
 	}
 
-	if err := m.Down(ctx, "left"); err != nil {
+	if err := m.DownWithCount(ctx, "left", count); err != nil {
 		return err
 	}
 
-	releaseDelay := randomDuration(delay)
+	time.Sleep(randomDuration(int(delay)))
 
-	time.Sleep(releaseDelay * time.Millisecond)
-
-	return m.Up(ctx, "left")
+	return m.UpWithCount(ctx, "left", count)
 }
 
 func (m *Mouse) Down(ctx context.Context, button string) error {
+	return m.DownWithCount(ctx, button, 1)
+}
+
+func (m *Mouse) DownWithCount(ctx context.Context, button string, count int) error {
 	return m.client.Input.DispatchMouseEvent(
 		ctx,
 		input.NewDispatchMouseEventArgs("mousePressed", m.x, m.y).
-			SetClickCount(1).
-			SetButton(button),
+			SetButton(button).
+			SetClickCount(count),
 	)
 }
 
 func (m *Mouse) Up(ctx context.Context, button string) error {
+	return m.UpWithCount(ctx, button, 1)
+}
+
+func (m *Mouse) UpWithCount(ctx context.Context, button string, count int) error {
 	return m.client.Input.DispatchMouseEvent(
 		ctx,
 		input.NewDispatchMouseEventArgs("mouseReleased", m.x, m.y).
-			SetClickCount(1).
-			SetButton(button),
+			SetButton(button).
+			SetClickCount(count),
 	)
 }
 

pkg/drivers/cdp/options.go

@@ -1,5 +1,7 @@
 package cdp
 
+import "github.com/MontFerret/ferret/pkg/drivers"
+
 type (
 	Options struct {
 		Name        string
@@ -7,6 +9,8 @@ type (
 		UserAgent   string
 		Address     string
 		KeepCookies bool
+		Headers     drivers.HTTPHeaders
+		Cookies     drivers.HTTPCookies
 	}
 
 	Option func(opts *Options)
@@ -57,3 +61,47 @@ func WithCustomName(name string) Option {
 		opts.Name = name
 	}
 }
+
+func WithHeader(name string, value []string) Option {
+	return func(opts *Options) {
+		if opts.Headers == nil {
+			opts.Headers = make(drivers.HTTPHeaders)
+		}
+
+		opts.Headers[name] = value
+	}
+}
+
+func WithHeaders(headers drivers.HTTPHeaders) Option {
+	return func(opts *Options) {
+		if opts.Headers == nil {
+			opts.Headers = make(drivers.HTTPHeaders)
+		}
+
+		for k, v := range headers {
+			opts.Headers[k] = v
+		}
+	}
+}
+
+func WithCookie(cookie drivers.HTTPCookie) Option {
+	return func(opts *Options) {
+		if opts.Cookies == nil {
+			opts.Cookies = make(drivers.HTTPCookies)
+		}
+
+		opts.Cookies[cookie.Name] = cookie
+	}
+}
+
+func WithCookies(cookies []drivers.HTTPCookie) Option {
+	return func(opts *Options) {
+		if opts.Cookies == nil {
+			opts.Cookies = make(drivers.HTTPCookies)
+		}
+
+		for _, c := range cookies {
+			opts.Cookies[c.Name] = c
+		}
+	}
+}

pkg/drivers/cdp/page.go

@@ -144,7 +144,7 @@ func LoadHTMLPage(
 		return nil, err
 	}
 
-	if params.Cookies != nil {
+	if len(params.Cookies) > 0 {
 		cookies := make([]network.CookieParam, 0, len(params.Cookies))
 
 		for _, c := range params.Cookies {
@@ -167,7 +167,7 @@ func LoadHTMLPage(
 		}
 	}
 
-	if params.Headers != nil {
+	if len(params.Headers) > 0 {
 		j, err := json.Marshal(params.Headers)
 
 		if err != nil {

pkg/drivers/cdp/templates/blur.go

@@ -0,0 +1,28 @@
+package templates
+
+import (
+	"fmt"
+	"github.com/MontFerret/ferret/pkg/drivers"
+)
+
+func Blur() string {
+	return `
+		(el) => {
+			el.blur()
+		}
+	`
+}
+
+func BlurBySelector(selector string) string {
+	return fmt.Sprintf(`
+		(parent) => {
+			const el = parent.querySelector('%s');
+
+			if (el == null) {
+				throw new Error('%s')
+			}
+
+			el.blur();
+		}
+`, selector, drivers.ErrNotFound)
+}

pkg/drivers/common/getter.go

@@ -121,7 +121,11 @@ func GetInDocument(ctx context.Context, doc drivers.HTMLDocument, path []core.Va
 
 			return GetInDocument(ctx, parent, path[1:])
 		case "body", "head":
-			out := doc.QuerySelector(ctx, segment)
+			out, err := doc.QuerySelector(ctx, segment)
+
+			if err != nil {
+				return values.None, err
+			}
 
 			if out == values.None {
 				return out, nil
@@ -166,9 +170,13 @@ func GetInElement(ctx context.Context, el drivers.HTMLElement, path []core.Value
 		case "innerHTML":
 			return el.GetInnerHTML(ctx)
 		case "value":
-			return el.GetValue(ctx), nil
+			return el.GetValue(ctx)
 		case "attributes":
-			attrs := el.GetAttributes(ctx)
+			attrs, err := el.GetAttributes(ctx)
+
+			if err != nil {
+				return values.None, err
+			}
 
 			if len(path) == 1 {
 				return attrs, nil
@@ -209,7 +217,7 @@ func GetInNode(ctx context.Context, node drivers.HTMLNode, path []core.Value) (c
 		if nt == drivers.HTMLElementType || nt == drivers.HTMLDocumentType {
 			re := node.(drivers.HTMLNode)
 
-			return re.GetChildNode(ctx, segment.(values.Int)), nil
+			return re.GetChildNode(ctx, values.ToInt(segment))
 		}
 
 		return values.GetIn(ctx, node, path[1:])
@@ -224,7 +232,11 @@ func GetInNode(ctx context.Context, node drivers.HTMLNode, path []core.Value) (c
 		case "nodeName":
 			return node.GetNodeName(), nil
 		case "children":
-			children := node.GetChildNodes(ctx)
+			children, err := node.GetChildNodes(ctx)
+
+			if err != nil {
+				return values.None, err
+			}
 
 			if len(path) == 1 {
 				return children, nil

pkg/drivers/common/iterator.go

@@ -26,7 +26,11 @@ func NewIterator(
 func (iterator *Iterator) Next(ctx context.Context) (value core.Value, key core.Value, err error) {
 	if iterator.node.Length() > iterator.pos {
 		idx := iterator.pos
-		val := iterator.node.GetChildNode(ctx, idx)
+		val, err := iterator.node.GetChildNode(ctx, idx)
+
+		if err != nil {
+			return values.None, values.None, err
+		}
 
 		iterator.pos++
 

pkg/drivers/common/setter.go

@@ -49,7 +49,11 @@ func SetInElement(ctx context.Context, el drivers.HTMLElement, path []core.Value
 				return err
 			}
 
-			curr := el.GetAttributes(ctx)
+			curr, err := el.GetAttributes(ctx)
+
+			if err != nil {
+				return err
+			}
 
 			// remove all previous attributes
 			err = el.RemoveAttribute(ctx, curr.Keys()...)

pkg/drivers/consts.go

@@ -0,0 +1,9 @@
+package drivers
+
+const (
+	DefaultPageLoadTimeout = 60000
+	DefaultWaitTimeout     = 5000
+	DefaultKeyboardDelay   = 25
+	DefaultMouseDelay      = 10
+	DefaultTimeout         = 30000
+)

pkg/drivers/cookie.go

@@ -30,6 +30,8 @@ type (
 		HTTPOnly bool
 		SameSite SameSite
 	}
+
+	HTTPCookies map[string]HTTPCookie
 )
 
 const (

pkg/drivers/driver.go

@@ -2,14 +2,10 @@ package drivers
 
 import (
 	"context"
-	"io"
-	"time"
-
 	"github.com/MontFerret/ferret/pkg/runtime/core"
+	"io"
 )
 
-const DefaultTimeout = time.Second * 30
-
 type (
 	ctxKey struct{}
 

pkg/drivers/helpers.go

@@ -1,15 +1,9 @@
 package drivers
 
 import (
-	"context"
-
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 )
 
-func WithDefaultTimeout(ctx context.Context) (context.Context, context.CancelFunc) {
-	return context.WithTimeout(ctx, DefaultTimeout)
-}
-
 func ToPage(value core.Value) (HTMLPage, error) {
 	err := core.ValidateType(value, HTMLPageType)
 

pkg/drivers/http/document.go

@@ -115,7 +115,7 @@ func (doc *HTMLDocument) Copy() core.Value {
 	return cp
 }
 
-func (doc *HTMLDocument) Clone() core.Value {
+func (doc *HTMLDocument) Clone() core.Cloneable {
 	cloned, err := NewHTMLDocument(doc.doc, doc.url.String(), doc.parent)
 
 	if err != nil {
@@ -149,23 +149,23 @@ func (doc *HTMLDocument) GetNodeName() values.String {
 	return "#document"
 }
 
-func (doc *HTMLDocument) GetChildNodes(ctx context.Context) core.Value {
+func (doc *HTMLDocument) GetChildNodes(ctx context.Context) (*values.Array, error) {
 	return doc.element.GetChildNodes(ctx)
 }
 
-func (doc *HTMLDocument) GetChildNode(ctx context.Context, idx values.Int) core.Value {
+func (doc *HTMLDocument) GetChildNode(ctx context.Context, idx values.Int) (core.Value, error) {
 	return doc.element.GetChildNode(ctx, idx)
 }
 
-func (doc *HTMLDocument) QuerySelector(ctx context.Context, selector values.String) core.Value {
+func (doc *HTMLDocument) QuerySelector(ctx context.Context, selector values.String) (core.Value, error) {
 	return doc.element.QuerySelector(ctx, selector)
 }
 
-func (doc *HTMLDocument) QuerySelectorAll(ctx context.Context, selector values.String) core.Value {
+func (doc *HTMLDocument) QuerySelectorAll(ctx context.Context, selector values.String) (*values.Array, error) {
 	return doc.element.QuerySelectorAll(ctx, selector)
 }
 
-func (doc *HTMLDocument) CountBySelector(ctx context.Context, selector values.String) values.Int {
+func (doc *HTMLDocument) CountBySelector(ctx context.Context, selector values.String) (values.Int, error) {
 	return doc.element.CountBySelector(ctx, selector)
 }
 
@@ -207,30 +207,6 @@ func (doc *HTMLDocument) GetParentDocument() drivers.HTMLDocument {
 	return doc.parent
 }
 
-func (doc *HTMLDocument) ClickBySelector(_ context.Context, _ values.String) error {
-	return core.ErrNotSupported
-}
-
-func (doc *HTMLDocument) ClickBySelectorAll(_ context.Context, _ values.String) error {
-	return core.ErrNotSupported
-}
-
-func (doc *HTMLDocument) InputBySelector(_ context.Context, _ values.String, _ core.Value, _ values.Int) error {
-	return core.ErrNotSupported
-}
-
-func (doc *HTMLDocument) SelectBySelector(_ context.Context, _ values.String, _ *values.Array) (*values.Array, error) {
-	return nil, core.ErrNotSupported
-}
-
-func (doc *HTMLDocument) PrintToPDF(_ context.Context, _ drivers.PDFParams) (values.Binary, error) {
-	return nil, core.ErrNotSupported
-}
-
-func (doc *HTMLDocument) CaptureScreenshot(_ context.Context, _ drivers.ScreenshotParams) (values.Binary, error) {
-	return nil, core.ErrNotSupported
-}
-
 func (doc *HTMLDocument) ScrollTop(_ context.Context) error {
 	return core.ErrNotSupported
 }
@@ -247,22 +223,10 @@ func (doc *HTMLDocument) ScrollByXY(_ context.Context, _, _ values.Float) error
 	return core.ErrNotSupported
 }
 
-func (doc *HTMLDocument) FocusBySelector(_ context.Context, _ values.String) error {
-	return core.ErrNotSupported
-}
-
-func (doc *HTMLDocument) MoveMouseBySelector(_ context.Context, _ values.String) error {
-	return core.ErrNotSupported
-}
-
 func (doc *HTMLDocument) MoveMouseByXY(_ context.Context, _, _ values.Float) error {
 	return core.ErrNotSupported
 }
 
-func (doc *HTMLDocument) WaitForNavigation(_ context.Context) error {
-	return core.ErrNotSupported
-}
-
 func (doc *HTMLDocument) WaitForElement(_ context.Context, _ values.String, _ drivers.WaitEvent) error {
 	return core.ErrNotSupported
 }

pkg/drivers/http/driver.go

@@ -26,7 +26,7 @@ func NewDriver(opts ...Option) *Driver {
 	drv := new(Driver)
 	drv.options = newOptions(opts)
 
-	if drv.options.proxy == "" {
+	if drv.options.Proxy == "" {
 		drv.client = pester.New()
 	} else {
 		client, err := newClientWithProxy(drv.options)
@@ -38,15 +38,15 @@ func NewDriver(opts ...Option) *Driver {
 		}
 	}
 
-	drv.client.Concurrency = drv.options.concurrency
-	drv.client.MaxRetries = drv.options.maxRetries
-	drv.client.Backoff = drv.options.backoff
+	drv.client.Concurrency = drv.options.Concurrency
+	drv.client.MaxRetries = drv.options.MaxRetries
+	drv.client.Backoff = drv.options.Backoff
 
 	return drv
 }
 
 func newClientWithProxy(options *Options) (*http.Client, error) {
-	proxyURL, err := url.Parse(options.proxy)
+	proxyURL, err := url.Parse(options.Proxy)
 
 	if err != nil {
 		return nil, err
@@ -59,7 +59,7 @@ func newClientWithProxy(options *Options) (*http.Client, error) {
 }
 
 func (drv *Driver) Name() string {
-	return DriverName
+	return drv.options.Name
 }
 
 func (drv *Driver) Open(ctx context.Context, params drivers.Params) (drivers.HTMLPage, error) {
@@ -76,33 +76,54 @@ func (drv *Driver) Open(ctx context.Context, params drivers.Params) (drivers.HTM
 	req.Header.Set("Cache-Control", "no-cache")
 	req.Header.Set("Pragma", "no-cache")
 
-	if params.Headers != nil {
-		for k := range params.Headers {
-			req.Header.Add(k, params.Headers.Get(k))
+	if drv.options.Headers != nil && params.Headers == nil {
+		params.Headers = make(drivers.HTTPHeaders)
+	}
 
-			logger.
-				Debug().
-				Timestamp().
-				Str("header", k).
-				Msg("set header")
+	// Set default headers
+	for k, v := range drv.options.Headers {
+		_, exists := params.Headers[k]
+
+		// do not override user's set values
+		if !exists {
+			params.Headers[k] = v
 		}
 	}
 
-	if params.Cookies != nil {
-		for _, c := range params.Cookies {
-			req.AddCookie(&http.Cookie{
-				Name:  c.Name,
-				Value: c.Value,
-			})
+	for k := range params.Headers {
+		req.Header.Add(k, params.Headers.Get(k))
 
-			logger.
-				Debug().
-				Timestamp().
-				Str("cookie", c.Name).
-				Msg("set cookie")
+		logger.
+			Debug().
+			Timestamp().
+			Str("header", k).
+			Msg("set header")
+	}
+
+	if drv.options.Cookies != nil && params.Cookies == nil {
+		params.Cookies = make(drivers.HTTPCookies)
+	}
+
+	// set default cookies
+	for k, v := range drv.options.Cookies {
+		_, exists := params.Cookies[k]
+
+		// do not override user's set values
+		if !exists {
+			params.Cookies[k] = v
 		}
 	}
 
+	for _, c := range params.Cookies {
+		req.AddCookie(fromDriverCookie(c))
+
+		logger.
+			Debug().
+			Timestamp().
+			Str("cookie", c.Name).
+			Msg("set cookie")
+	}
+
 	req = req.WithContext(ctx)
 
 	var ua string
@@ -110,7 +131,7 @@ func (drv *Driver) Open(ctx context.Context, params drivers.Params) (drivers.HTM
 	if params.UserAgent != "" {
 		ua = common.GetUserAgent(params.UserAgent)
 	} else {
-		ua = common.GetUserAgent(drv.options.userAgent)
+		ua = common.GetUserAgent(drv.options.UserAgent)
 	}
 
 	logger.
@@ -141,6 +162,12 @@ func (drv *Driver) Open(ctx context.Context, params drivers.Params) (drivers.HTM
 		return nil, errors.Wrapf(err, "failed to parse a document %s", params.URL)
 	}
 
+	cookies, err := toDriverCookies(resp.Cookies())
+
+	if err != nil {
+		return nil, err
+	}
+
 	// HTTPResponse is temporarily unavailable when the status code != OK
 	r := drivers.HTTPResponse{
 		StatusCode: resp.StatusCode,
@@ -148,7 +175,7 @@ func (drv *Driver) Open(ctx context.Context, params drivers.Params) (drivers.HTM
 		Headers:    drivers.HTTPHeaders(resp.Header),
 	}
 
-	return NewHTMLPage(doc, params.URL, params.Cookies, &r)
+	return NewHTMLPage(doc, params.URL, &r, cookies)
 }
 
 func (drv *Driver) Parse(_ context.Context, str values.String) (drivers.HTMLPage, error) {

pkg/drivers/http/element.go

@@ -116,14 +116,14 @@ func (el *HTMLElement) Length() values.Int {
 	return el.children.Length()
 }
 
-func (el *HTMLElement) GetValue(_ context.Context) core.Value {
+func (el *HTMLElement) GetValue(_ context.Context) (core.Value, error) {
 	val, ok := el.selection.Attr("value")
 
 	if ok {
-		return values.NewString(val)
+		return values.NewString(val), nil
 	}
 
-	return values.EmptyString
+	return values.EmptyString, nil
 }
 
 func (el *HTMLElement) SetValue(_ context.Context, value core.Value) error {
@@ -242,16 +242,16 @@ func (el *HTMLElement) SetAttributes(ctx context.Context, attrs *values.Object)
 	return err
 }
 
-func (el *HTMLElement) GetAttributes(_ context.Context) *values.Object {
+func (el *HTMLElement) GetAttributes(_ context.Context) (*values.Object, error) {
 	el.ensureAttrs()
 
-	return el.attrs.Copy().(*values.Object)
+	return el.attrs.Copy().(*values.Object), nil
 }
 
-func (el *HTMLElement) GetAttribute(_ context.Context, name values.String) core.Value {
+func (el *HTMLElement) GetAttribute(_ context.Context, name values.String) (core.Value, error) {
 	el.ensureAttrs()
 
-	return el.attrs.MustGet(name)
+	return el.attrs.MustGet(name), nil
 }
 
 func (el *HTMLElement) SetAttribute(_ context.Context, name, value values.String) error {
@@ -274,43 +274,43 @@ func (el *HTMLElement) RemoveAttribute(_ context.Context, name ...values.String)
 	return nil
 }
 
-func (el *HTMLElement) GetChildNodes(_ context.Context) core.Value {
+func (el *HTMLElement) GetChildNodes(_ context.Context) (*values.Array, error) {
 	if el.children == nil {
 		el.children = el.parseChildren()
 	}
 
-	return el.children
+	return el.children.Copy().(*values.Array), nil
 }
 
-func (el *HTMLElement) GetChildNode(_ context.Context, idx values.Int) core.Value {
+func (el *HTMLElement) GetChildNode(_ context.Context, idx values.Int) (core.Value, error) {
 	if el.children == nil {
 		el.children = el.parseChildren()
 	}
 
-	return el.children.Get(idx)
+	return el.children.Get(idx), nil
 }
 
-func (el *HTMLElement) QuerySelector(_ context.Context, selector values.String) core.Value {
+func (el *HTMLElement) QuerySelector(_ context.Context, selector values.String) (core.Value, error) {
 	selection := el.selection.Find(selector.String())
 
 	if selection == nil {
-		return values.None
+		return values.None, nil
 	}
 
 	res, err := NewHTMLElement(selection)
 
 	if err != nil {
-		return values.None
+		return values.None, err
 	}
 
-	return res
+	return res, nil
 }
 
-func (el *HTMLElement) QuerySelectorAll(_ context.Context, selector values.String) core.Value {
+func (el *HTMLElement) QuerySelectorAll(_ context.Context, selector values.String) (*values.Array, error) {
 	selection := el.selection.Find(selector.String())
 
 	if selection == nil {
-		return values.None
+		return values.NewArray(0), nil
 	}
 
 	arr := values.NewArray(selection.Length())
@@ -323,7 +323,7 @@ func (el *HTMLElement) QuerySelectorAll(_ context.Context, selector values.Strin
 		}
 	})
 
-	return arr
+	return arr, nil
 }
 
 func (el *HTMLElement) XPath(_ context.Context, expression values.String) (core.Value, error) {
@@ -457,14 +457,14 @@ func (el *HTMLElement) GetInnerTextBySelectorAll(_ context.Context, selector val
 	return arr, nil
 }
 
-func (el *HTMLElement) CountBySelector(_ context.Context, selector values.String) values.Int {
+func (el *HTMLElement) CountBySelector(_ context.Context, selector values.String) (values.Int, error) {
 	selection := el.selection.Find(selector.String())
 
 	if selection == nil {
-		return values.ZeroInt
+		return values.ZeroInt, nil
 	}
 
-	return values.NewInt(selection.Size())
+	return values.NewInt(selection.Size()), nil
 }
 
 func (el *HTMLElement) ExistsBySelector(_ context.Context, selector values.String) (values.Boolean, error) {
@@ -489,15 +489,23 @@ func (el *HTMLElement) Iterate(_ context.Context) (core.Iterator, error) {
 	return common.NewIterator(el)
 }
 
-func (el *HTMLElement) Click(_ context.Context) error {
+func (el *HTMLElement) Click(_ context.Context, _ values.Int) error {
 	return core.ErrNotSupported
 }
 
-func (el *HTMLElement) ClickBySelector(_ context.Context, _ values.String) error {
+func (el *HTMLElement) ClickBySelector(_ context.Context, _ values.String, _ values.Int) error {
 	return core.ErrNotSupported
 }
 
-func (el *HTMLElement) ClickBySelectorAll(_ context.Context, _ values.String) error {
+func (el *HTMLElement) ClickBySelectorAll(_ context.Context, _ values.String, _ values.Int) error {
+	return core.ErrNotSupported
+}
+
+func (el *HTMLElement) Clear(_ context.Context) error {
+	return core.ErrNotSupported
+}
+
+func (el *HTMLElement) ClearBySelector(_ context.Context, _ values.String) error {
 	return core.ErrNotSupported
 }
 
@@ -505,10 +513,18 @@ func (el *HTMLElement) Input(_ context.Context, _ core.Value, _ values.Int) erro
 	return core.ErrNotSupported
 }
 
+func (el *HTMLElement) InputBySelector(_ context.Context, _ values.String, _ core.Value, _ values.Int) error {
+	return core.ErrNotSupported
+}
+
 func (el *HTMLElement) Select(_ context.Context, _ *values.Array) (*values.Array, error) {
 	return nil, core.ErrNotSupported
 }
 
+func (el *HTMLElement) SelectBySelector(_ context.Context, _ values.String, _ *values.Array) (*values.Array, error) {
+	return nil, core.ErrNotSupported
+}
+
 func (el *HTMLElement) ScrollIntoView(_ context.Context) error {
 	return core.ErrNotSupported
 }
@@ -517,10 +533,26 @@ func (el *HTMLElement) Focus(_ context.Context) error {
 	return core.ErrNotSupported
 }
 
+func (el *HTMLElement) FocusBySelector(_ context.Context, _ values.String) error {
+	return core.ErrNotSupported
+}
+
+func (el *HTMLElement) Blur(_ context.Context) error {
+	return core.ErrNotSupported
+}
+
+func (el *HTMLElement) BlurBySelector(_ context.Context, _ values.String) error {
+	return core.ErrNotSupported
+}
+
 func (el *HTMLElement) Hover(_ context.Context) error {
 	return core.ErrNotSupported
 }
 
+func (el *HTMLElement) HoverBySelector(_ context.Context, _ values.String) error {
+	return core.ErrNotSupported
+}
+
 func (el *HTMLElement) WaitForClass(_ context.Context, _ values.String, _ drivers.WaitEvent) error {
 	return core.ErrNotSupported
 }
@@ -548,7 +580,11 @@ func (el *HTMLElement) ensureStyles(ctx context.Context) error {
 }
 
 func (el *HTMLElement) parseStyles(ctx context.Context) (*values.Object, error) {
-	str := el.GetAttribute(ctx, "style")
+	str, err := el.GetAttribute(ctx, "style")
+
+	if err != nil {
+		return values.NewObject(), err
+	}
 
 	if str == values.None {
 		return values.NewObject(), nil

pkg/drivers/http/element_test.go

@@ -322,8 +322,9 @@ func TestElement(t *testing.T) {
 
 		So(err, ShouldBeNil)
 
-		v := el.GetValue(context.Background())
+		v, err := el.GetValue(context.Background())
 
+		So(err, ShouldBeNil)
 		So(v, ShouldEqual, "find")
 	})
 
@@ -393,8 +394,9 @@ func TestElement(t *testing.T) {
 
 		So(err, ShouldBeNil)
 
-		found := el.QuerySelector(context.Background(), values.NewString("body .card-img-top:nth-child(1)"))
+		found, err := el.QuerySelector(context.Background(), values.NewString("body .card-img-top:nth-child(1)"))
 
+		So(err, ShouldBeNil)
 		So(found, ShouldNotEqual, values.None)
 
 		v := found.(drivers.HTMLNode).GetNodeName()
@@ -415,8 +417,9 @@ func TestElement(t *testing.T) {
 
 		So(err, ShouldBeNil)
 
-		v := el.CountBySelector(context.Background(), values.NewString("head meta"))
+		v, err := el.CountBySelector(context.Background(), values.NewString("head meta"))
 
+		So(err, ShouldBeNil)
 		So(v, ShouldEqual, 4)
 	})
 }

pkg/drivers/http/helpers.go

@@ -2,14 +2,16 @@ package http
 
 import (
 	"bytes"
-	"golang.org/x/net/html"
-
-	"github.com/MontFerret/ferret/pkg/runtime/core"
-	"github.com/MontFerret/ferret/pkg/runtime/values"
+	HTTP "net/http"
 
 	"github.com/PuerkitoBio/goquery"
 	"github.com/antchfx/htmlquery"
 	"github.com/antchfx/xpath"
+	"golang.org/x/net/html"
+
+	"github.com/MontFerret/ferret/pkg/drivers"
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
 func parseXPathNode(nav *htmlquery.NodeNavigator) (core.Value, error) {
@@ -45,3 +47,71 @@ func outerHTML(s *goquery.Selection) (string, error) {
 
 	return buf.String(), nil
 }
+
+func toDriverCookies(cookies []*HTTP.Cookie) (drivers.HTTPCookies, error) {
+	res := make(drivers.HTTPCookies)
+
+	for _, c := range cookies {
+		dc, err := toDriverCookie(c)
+
+		if err != nil {
+			return nil, err
+		}
+
+		res[dc.Name] = dc
+	}
+
+	return res, nil
+}
+
+func toDriverCookie(cookie *HTTP.Cookie) (drivers.HTTPCookie, error) {
+	res := drivers.HTTPCookie{}
+
+	if cookie == nil {
+		return res, core.Error(core.ErrMissedArgument, "cookie")
+	}
+
+	res.Name = cookie.Name
+	res.Value = cookie.Value
+	res.Path = cookie.Path
+	res.Domain = cookie.Domain
+	res.Expires = cookie.Expires
+	res.MaxAge = cookie.MaxAge
+	res.Secure = cookie.Secure
+	res.HTTPOnly = cookie.HttpOnly
+
+	switch cookie.SameSite {
+	case HTTP.SameSiteLaxMode:
+		res.SameSite = drivers.SameSiteLaxMode
+	case HTTP.SameSiteStrictMode:
+		res.SameSite = drivers.SameSiteStrictMode
+	default:
+		res.SameSite = drivers.SameSiteDefaultMode
+	}
+
+	return res, nil
+}
+
+func fromDriverCookie(cookie drivers.HTTPCookie) *HTTP.Cookie {
+	res := &HTTP.Cookie{}
+
+	res.Name = cookie.Name
+	res.Value = cookie.Value
+	res.Path = cookie.Path
+	res.Domain = cookie.Domain
+	res.Expires = cookie.Expires
+	res.MaxAge = cookie.MaxAge
+	res.Secure = cookie.Secure
+	res.HttpOnly = cookie.HTTPOnly
+
+	switch cookie.SameSite {
+	case drivers.SameSiteLaxMode:
+		res.SameSite = HTTP.SameSiteLaxMode
+	case drivers.SameSiteStrictMode:
+		res.SameSite = HTTP.SameSiteStrictMode
+	default:
+		res.SameSite = HTTP.SameSiteDefaultMode
+	}
+
+	return res
+}

pkg/drivers/http/options.go

@@ -1,6 +1,7 @@
 package http
 
 import (
+	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/sethgrid/pester"
 )
 
@@ -8,19 +9,23 @@ type (
 	Option func(opts *Options)
 
 	Options struct {
-		backoff     pester.BackoffStrategy
-		maxRetries  int
-		concurrency int
-		proxy       string
-		userAgent   string
+		Name        string
+		Backoff     pester.BackoffStrategy
+		MaxRetries  int
+		Concurrency int
+		Proxy       string
+		UserAgent   string
+		Headers     drivers.HTTPHeaders
+		Cookies     drivers.HTTPCookies
 	}
 )
 
 func newOptions(setters []Option) *Options {
 	opts := new(Options)
-	opts.backoff = pester.ExponentialBackoff
-	opts.concurrency = 3
-	opts.maxRetries = 5
+	opts.Name = DriverName
+	opts.Backoff = pester.ExponentialBackoff
+	opts.Concurrency = 3
+	opts.MaxRetries = 5
 
 	for _, setter := range setters {
 		setter(opts)
@@ -31,42 +36,92 @@ func newOptions(setters []Option) *Options {
 
 func WithDefaultBackoff() Option {
 	return func(opts *Options) {
-		opts.backoff = pester.DefaultBackoff
+		opts.Backoff = pester.DefaultBackoff
 	}
 }
 
 func WithLinearBackoff() Option {
 	return func(opts *Options) {
-		opts.backoff = pester.LinearBackoff
+		opts.Backoff = pester.LinearBackoff
 	}
 }
 
 func WithExponentialBackoff() Option {
 	return func(opts *Options) {
-		opts.backoff = pester.ExponentialBackoff
+		opts.Backoff = pester.ExponentialBackoff
 	}
 }
 
 func WithMaxRetries(value int) Option {
 	return func(opts *Options) {
-		opts.maxRetries = value
+		opts.MaxRetries = value
 	}
 }
 
 func WithConcurrency(value int) Option {
 	return func(opts *Options) {
-		opts.concurrency = value
+		opts.Concurrency = value
 	}
 }
 
 func WithProxy(address string) Option {
 	return func(opts *Options) {
-		opts.proxy = address
+		opts.Proxy = address
 	}
 }
 
 func WithUserAgent(value string) Option {
 	return func(opts *Options) {
-		opts.userAgent = value
+		opts.UserAgent = value
+	}
+}
+
+func WithCustomName(name string) Option {
+	return func(opts *Options) {
+		opts.Name = name
+	}
+}
+
+func WithHeader(name string, value []string) Option {
+	return func(opts *Options) {
+		if opts.Headers == nil {
+			opts.Headers = make(drivers.HTTPHeaders)
+		}
+
+		opts.Headers[name] = value
+	}
+}
+
+func WithHeaders(headers drivers.HTTPHeaders) Option {
+	return func(opts *Options) {
+		if opts.Headers == nil {
+			opts.Headers = make(drivers.HTTPHeaders)
+		}
+
+		for k, v := range headers {
+			opts.Headers[k] = v
+		}
+	}
+}
+
+func WithCookie(cookie drivers.HTTPCookie) Option {
+	return func(opts *Options) {
+		if opts.Cookies == nil {
+			opts.Cookies = make(drivers.HTTPCookies)
+		}
+
+		opts.Cookies[cookie.Name] = cookie
+	}
+}
+
+func WithCookies(cookies []drivers.HTTPCookie) Option {
+	return func(opts *Options) {
+		if opts.Cookies == nil {
+			opts.Cookies = make(drivers.HTTPCookies)
+		}
+
+		for _, c := range cookies {
+			opts.Cookies[c.Name] = c
+		}
 	}
 }

pkg/drivers/http/page.go

@@ -4,16 +4,17 @@ import (
 	"context"
 	"hash/fnv"
 
+	"github.com/PuerkitoBio/goquery"
+
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/drivers/common"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
-	"github.com/PuerkitoBio/goquery"
 )
 
 type HTMLPage struct {
 	document *HTMLDocument
-	cookies  []drivers.HTTPCookie
+	cookies  drivers.HTTPCookies
 	frames   *values.Array
 	response *drivers.HTTPResponse
 }
@@ -21,8 +22,8 @@ type HTMLPage struct {
 func NewHTMLPage(
 	qdoc *goquery.Document,
 	url string,
-	cookies []drivers.HTTPCookie,
 	response *drivers.HTTPResponse,
+	cookies drivers.HTTPCookies,
 ) (*HTMLPage, error) {
 	doc, err := NewRootHTMLDocument(qdoc, url)
 
@@ -83,11 +84,17 @@ func (p *HTMLPage) Hash() uint64 {
 }
 
 func (p *HTMLPage) Copy() core.Value {
+	cookies := make(drivers.HTTPCookies)
+
+	for k, v := range p.cookies {
+		cookies[k] = v
+	}
+
 	page, err := NewHTMLPage(
 		p.document.doc,
 		p.document.GetURL().String(),
-		p.cookies,
 		p.response,
+		cookies,
 	)
 
 	if err != nil {

pkg/drivers/params.go

@@ -13,7 +13,7 @@ type (
 		URL         string
 		UserAgent   string
 		KeepCookies bool
-		Cookies     []HTTPCookie
+		Cookies     HTTPCookies
 		Headers     HTTPHeaders
 		Viewport    *Viewport
 	}

pkg/drivers/value.go

@@ -30,23 +30,19 @@ type (
 
 		GetNodeName() values.String
 
-		GetChildNodes(ctx context.Context) core.Value
+		GetChildNodes(ctx context.Context) (*values.Array, error)
 
-		GetChildNode(ctx context.Context, idx values.Int) core.Value
+		GetChildNode(ctx context.Context, idx values.Int) (core.Value, error)
 
-		QuerySelector(ctx context.Context, selector values.String) core.Value
+		QuerySelector(ctx context.Context, selector values.String) (core.Value, error)
 
-		QuerySelectorAll(ctx context.Context, selector values.String) core.Value
+		QuerySelectorAll(ctx context.Context, selector values.String) (*values.Array, error)
 
-		CountBySelector(ctx context.Context, selector values.String) values.Int
+		CountBySelector(ctx context.Context, selector values.String) (values.Int, error)
 
 		ExistsBySelector(ctx context.Context, selector values.String) (values.Boolean, error)
 
 		XPath(ctx context.Context, expression values.String) (core.Value, error)
-
-		ClickBySelector(ctx context.Context, selector values.String) error
-
-		ClickBySelectorAll(ctx context.Context, selector values.String) error
 	}
 
 	// HTMLElement is the most general base interface which most objects in a GetMainFrame implement.
@@ -61,7 +57,7 @@ type (
 
 		SetInnerHTML(ctx context.Context, innerHTML values.String) error
 
-		GetValue(ctx context.Context) core.Value
+		GetValue(ctx context.Context) (core.Value, error)
 
 		SetValue(ctx context.Context, value core.Value) error
 
@@ -75,9 +71,9 @@ type (
 
 		RemoveStyle(ctx context.Context, name ...values.String) error
 
-		GetAttributes(ctx context.Context) *values.Object
+		GetAttributes(ctx context.Context) (*values.Object, error)
 
-		GetAttribute(ctx context.Context, name values.String) core.Value
+		GetAttribute(ctx context.Context, name values.String) (core.Value, error)
 
 		SetAttributes(ctx context.Context, values *values.Object) error
 
@@ -97,18 +93,38 @@ type (
 
 		GetInnerTextBySelectorAll(ctx context.Context, selector values.String) (*values.Array, error)
 
-		Click(ctx context.Context) error
+		Click(ctx context.Context, count values.Int) error
+
+		ClickBySelector(ctx context.Context, selector values.String, count values.Int) error
+
+		ClickBySelectorAll(ctx context.Context, selector values.String, count values.Int) error
+
+		Clear(ctx context.Context) error
+
+		ClearBySelector(ctx context.Context, selector values.String) error
 
 		Input(ctx context.Context, value core.Value, delay values.Int) error
 
+		InputBySelector(ctx context.Context, selector values.String, value core.Value, delay values.Int) error
+
 		Select(ctx context.Context, value *values.Array) (*values.Array, error)
 
+		SelectBySelector(ctx context.Context, selector values.String, value *values.Array) (*values.Array, error)
+
 		ScrollIntoView(ctx context.Context) error
 
 		Focus(ctx context.Context) error
 
+		FocusBySelector(ctx context.Context, selector values.String) error
+
+		Blur(ctx context.Context) error
+
+		BlurBySelector(ctx context.Context, selector values.String) error
+
 		Hover(ctx context.Context) error
 
+		HoverBySelector(ctx context.Context, selector values.String) error
+
 		WaitForAttribute(ctx context.Context, name values.String, value core.Value, when WaitEvent) error
 
 		WaitForStyle(ctx context.Context, name values.String, value core.Value, when WaitEvent) error
@@ -131,10 +147,6 @@ type (
 
 		GetChildDocuments(ctx context.Context) (*values.Array, error)
 
-		InputBySelector(ctx context.Context, selector values.String, value core.Value, delay values.Int) error
-
-		SelectBySelector(ctx context.Context, selector values.String, value *values.Array) (*values.Array, error)
-
 		ScrollTop(ctx context.Context) error
 
 		ScrollBottom(ctx context.Context) error
@@ -143,12 +155,8 @@ type (
 
 		ScrollByXY(ctx context.Context, x, y values.Float) error
 
-		FocusBySelector(ctx context.Context, selector values.String) error
-
 		MoveMouseByXY(ctx context.Context, x, y values.Float) error
 
-		MoveMouseBySelector(ctx context.Context, selector values.String) error
-
 		WaitForElement(ctx context.Context, selector values.String, when WaitEvent) error
 
 		WaitForAttributeBySelector(ctx context.Context, selector, name values.String, value core.Value, when WaitEvent) error

pkg/parser/antlr/FqlLexer.g4

@@ -78,8 +78,7 @@ In: 'IN';
 // Literals
 Param: '@';
 Identifier: Letter+ (Symbols (Identifier)*)* (Digit (Identifier)*)*;
-StringLiteral: SQString | DQSring;
-TemplateStringLiteral: '`' ('\\`' | ~'`')* '`';
+StringLiteral: SQString | DQSring | BacktickString | TickString;
 IntegerLiteral: [0-9]+;
 FloatLiteral
     : DecimalIntegerLiteral Dot [0-9]+ ExponentPart?
@@ -108,4 +107,6 @@ fragment Digit
     ;
 fragment DQSring: '"' ( '\\'. | '""' | ~('"'| '\\') )* '"';
 fragment SQString: '\'' ('\\'. | '\'\'' | ~('\'' | '\\'))* '\'';
+fragment BacktickString: '`' ('\\`' | ~'`')* '`';
+fragment TickString: '´' ('\\´' | ~'´')* '´';
 fragment NamespaceSeparator: '::';

pkg/parser/antlr/FqlLexer.tokens

@@ -57,10 +57,9 @@ In=56
 Param=57
 Identifier=58
 StringLiteral=59
-TemplateStringLiteral=60
-IntegerLiteral=61
-FloatLiteral=62
-NamespaceSegment=63
+IntegerLiteral=60
+FloatLiteral=61
+NamespaceSegment=62
 ':'=5
 ';'=6
 '.'=7

pkg/parser/antlr/FqlParser.g4

@@ -159,7 +159,6 @@ booleanLiteral
 
 stringLiteral
     : StringLiteral
-    | TemplateStringLiteral
     ;
 
 integerLiteral
@@ -185,11 +184,6 @@ propertyAssignment
     | shorthandPropertyName
     ;
 
-memberExpression
-    : Identifier (Dot propertyName (computedPropertyName)*)+
-    | Identifier computedPropertyName (Dot propertyName (computedPropertyName)*)* (computedPropertyName (Dot propertyName)*)*
-    ;
-
 shorthandPropertyName
     : variable
     ;
@@ -201,6 +195,7 @@ computedPropertyName
 propertyName
     : Identifier
     | stringLiteral
+    | param
     ;
 
 expressionGroup
@@ -215,6 +210,21 @@ functionCallExpression
     : namespace Identifier arguments
     ;
 
+member
+    : Identifier
+    | functionCallExpression
+    | param
+    ;
+
+memberPath
+    : (Dot propertyName (computedPropertyName)*)+
+    | computedPropertyName (Dot propertyName (computedPropertyName)*)* (computedPropertyName (Dot propertyName)*)*
+    ;
+
+memberExpression
+    : member memberPath
+    ;
+
 arguments
     : OpenParen(expression (Comma expression)*)?CloseParen
     ;

pkg/parser/fql/FqlLexer.tokens

@@ -57,10 +57,9 @@ In=56
 Param=57
 Identifier=58
 StringLiteral=59
-TemplateStringLiteral=60
-IntegerLiteral=61
-FloatLiteral=62
-NamespaceSegment=63
+IntegerLiteral=60
+FloatLiteral=61
+NamespaceSegment=62
 ':'=5
 ';'=6
 '.'=7

pkg/parser/fql/FqlParser.tokens

@@ -57,10 +57,9 @@ In=56
 Param=57
 Identifier=58
 StringLiteral=59
-TemplateStringLiteral=60
-IntegerLiteral=61
-FloatLiteral=62
-NamespaceSegment=63
+IntegerLiteral=60
+FloatLiteral=61
+NamespaceSegment=62
 ':'=5
 ';'=6
 '.'=7

pkg/parser/fql/fql_lexer.go

@@ -14,7 +14,7 @@ var _ = fmt.Printf
 var _ = unicode.IsLetter
 
 var serializedLexerAtn = []uint16{
-	3, 24715, 42794, 33075, 47597, 16764, 15335, 30598, 22884, 2, 65, 529,
+	3, 24715, 42794, 33075, 47597, 16764, 15335, 30598, 22884, 2, 64, 544,
 	8, 1, 4, 2, 9, 2, 4, 3, 9, 3, 4, 4, 9, 4, 4, 5, 9, 5, 4, 6, 9, 6, 4, 7,
 	9, 7, 4, 8, 9, 8, 4, 9, 9, 9, 4, 10, 9, 10, 4, 11, 9, 11, 4, 12, 9, 12,
 	4, 13, 9, 13, 4, 14, 9, 14, 4, 15, 9, 15, 4, 16, 9, 16, 4, 17, 9, 17, 4,
@@ -28,59 +28,61 @@ var serializedLexerAtn = []uint16{
 	4, 55, 9, 55, 4, 56, 9, 56, 4, 57, 9, 57, 4, 58, 9, 58, 4, 59, 9, 59, 4,
 	60, 9, 60, 4, 61, 9, 61, 4, 62, 9, 62, 4, 63, 9, 63, 4, 64, 9, 64, 4, 65,
 	9, 65, 4, 66, 9, 66, 4, 67, 9, 67, 4, 68, 9, 68, 4, 69, 9, 69, 4, 70, 9,
-	70, 4, 71, 9, 71, 4, 72, 9, 72, 4, 73, 9, 73, 3, 2, 3, 2, 3, 2, 3, 2, 7,
-	2, 152, 10, 2, 12, 2, 14, 2, 155, 11, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2,
-	3, 3, 3, 3, 3, 3, 3, 3, 7, 3, 166, 10, 3, 12, 3, 14, 3, 169, 11, 3, 3,
-	3, 3, 3, 3, 4, 6, 4, 174, 10, 4, 13, 4, 14, 4, 175, 3, 4, 3, 4, 3, 5, 3,
-	5, 3, 5, 3, 5, 3, 6, 3, 6, 3, 7, 3, 7, 3, 8, 3, 8, 3, 9, 3, 9, 3, 10, 3,
-	10, 3, 11, 3, 11, 3, 12, 3, 12, 3, 13, 3, 13, 3, 14, 3, 14, 3, 15, 3, 15,
-	3, 16, 3, 16, 3, 17, 3, 17, 3, 18, 3, 18, 3, 18, 3, 19, 3, 19, 3, 19, 3,
-	20, 3, 20, 3, 20, 3, 21, 3, 21, 3, 21, 3, 22, 3, 22, 3, 23, 3, 23, 3, 24,
-	3, 24, 3, 25, 3, 25, 3, 26, 3, 26, 3, 27, 3, 27, 3, 27, 3, 28, 3, 28, 3,
-	28, 3, 29, 3, 29, 3, 29, 3, 29, 3, 29, 5, 29, 241, 10, 29, 3, 30, 3, 30,
-	3, 30, 3, 30, 5, 30, 247, 10, 30, 3, 31, 3, 31, 3, 31, 3, 32, 3, 32, 3,
-	33, 3, 33, 3, 34, 3, 34, 3, 34, 3, 35, 3, 35, 3, 35, 3, 36, 3, 36, 3, 36,
-	3, 36, 3, 37, 3, 37, 3, 37, 3, 37, 3, 37, 3, 37, 3, 37, 3, 38, 3, 38, 3,
-	38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 39, 3, 39, 3, 39, 3, 39,
-	3, 39, 3, 39, 3, 39, 3, 40, 3, 40, 3, 40, 3, 40, 3, 40, 3, 41, 3, 41, 3,
-	41, 3, 41, 3, 41, 3, 41, 3, 42, 3, 42, 3, 42, 3, 42, 3, 43, 3, 43, 3, 43,
-	3, 43, 3, 43, 3, 43, 3, 43, 3, 43, 3, 44, 3, 44, 3, 44, 3, 44, 3, 44, 3,
-	44, 3, 44, 5, 44, 319, 10, 44, 3, 45, 3, 45, 3, 45, 3, 45, 3, 45, 3, 46,
-	3, 46, 3, 46, 3, 46, 3, 46, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3,
-	47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47,
-	3, 47, 5, 47, 349, 10, 47, 3, 48, 3, 48, 3, 48, 3, 48, 3, 48, 3, 49, 3,
-	49, 3, 49, 3, 49, 3, 49, 3, 50, 3, 50, 3, 50, 3, 50, 3, 50, 3, 51, 3, 51,
-	3, 51, 3, 51, 3, 51, 3, 51, 3, 52, 3, 52, 3, 52, 3, 52, 3, 53, 3, 53, 3,
-	53, 3, 53, 3, 54, 3, 54, 3, 54, 3, 54, 3, 54, 3, 54, 3, 54, 3, 54, 3, 54,
-	3, 54, 3, 55, 3, 55, 3, 55, 3, 55, 3, 55, 3, 56, 3, 56, 3, 56, 3, 56, 5,
-	56, 399, 10, 56, 3, 57, 3, 57, 3, 57, 3, 58, 3, 58, 3, 59, 6, 59, 407,
-	10, 59, 13, 59, 14, 59, 408, 3, 59, 3, 59, 7, 59, 413, 10, 59, 12, 59,
-	14, 59, 416, 11, 59, 7, 59, 418, 10, 59, 12, 59, 14, 59, 421, 11, 59, 3,
-	59, 3, 59, 7, 59, 425, 10, 59, 12, 59, 14, 59, 428, 11, 59, 7, 59, 430,
-	10, 59, 12, 59, 14, 59, 433, 11, 59, 3, 60, 3, 60, 5, 60, 437, 10, 60,
-	3, 61, 3, 61, 3, 61, 3, 61, 7, 61, 443, 10, 61, 12, 61, 14, 61, 446, 11,
-	61, 3, 61, 3, 61, 3, 62, 6, 62, 451, 10, 62, 13, 62, 14, 62, 452, 3, 63,
-	3, 63, 3, 63, 6, 63, 458, 10, 63, 13, 63, 14, 63, 459, 3, 63, 5, 63, 463,
-	10, 63, 3, 63, 3, 63, 5, 63, 467, 10, 63, 5, 63, 469, 10, 63, 3, 64, 3,
-	64, 3, 64, 3, 65, 3, 65, 3, 66, 3, 66, 3, 66, 7, 66, 479, 10, 66, 12, 66,
-	14, 66, 482, 11, 66, 5, 66, 484, 10, 66, 3, 67, 3, 67, 5, 67, 488, 10,
-	67, 3, 67, 6, 67, 491, 10, 67, 13, 67, 14, 67, 492, 3, 68, 3, 68, 3, 69,
-	3, 69, 3, 70, 3, 70, 3, 71, 3, 71, 3, 71, 3, 71, 3, 71, 3, 71, 7, 71, 507,
-	10, 71, 12, 71, 14, 71, 510, 11, 71, 3, 71, 3, 71, 3, 72, 3, 72, 3, 72,
-	3, 72, 3, 72, 3, 72, 7, 72, 520, 10, 72, 12, 72, 14, 72, 523, 11, 72, 3,
-	72, 3, 72, 3, 73, 3, 73, 3, 73, 3, 153, 2, 74, 3, 3, 5, 4, 7, 5, 9, 6,
-	11, 7, 13, 8, 15, 9, 17, 10, 19, 11, 21, 12, 23, 13, 25, 14, 27, 15, 29,
-	16, 31, 17, 33, 18, 35, 19, 37, 20, 39, 21, 41, 22, 43, 23, 45, 24, 47,
-	25, 49, 26, 51, 27, 53, 28, 55, 29, 57, 30, 59, 31, 61, 32, 63, 33, 65,
-	34, 67, 35, 69, 36, 71, 37, 73, 38, 75, 39, 77, 40, 79, 41, 81, 42, 83,
-	43, 85, 44, 87, 45, 89, 46, 91, 47, 93, 48, 95, 49, 97, 50, 99, 51, 101,
-	52, 103, 53, 105, 54, 107, 55, 109, 56, 111, 57, 113, 58, 115, 59, 117,
-	60, 119, 61, 121, 62, 123, 63, 125, 64, 127, 65, 129, 2, 131, 2, 133, 2,
-	135, 2, 137, 2, 139, 2, 141, 2, 143, 2, 145, 2, 3, 2, 13, 5, 2, 12, 12,
-	15, 15, 8234, 8235, 6, 2, 11, 11, 13, 14, 34, 34, 162, 162, 3, 2, 98, 98,
-	3, 2, 50, 59, 5, 2, 50, 59, 67, 72, 99, 104, 3, 2, 51, 59, 4, 2, 71, 71,
-	103, 103, 4, 2, 45, 45, 47, 47, 4, 2, 67, 92, 99, 124, 4, 2, 36, 36, 94,
-	94, 4, 2, 41, 41, 94, 94, 2, 552, 2, 3, 3, 2, 2, 2, 2, 5, 3, 2, 2, 2, 2,
+	70, 4, 71, 9, 71, 4, 72, 9, 72, 4, 73, 9, 73, 4, 74, 9, 74, 3, 2, 3, 2,
+	3, 2, 3, 2, 7, 2, 154, 10, 2, 12, 2, 14, 2, 157, 11, 2, 3, 2, 3, 2, 3,
+	2, 3, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3, 3, 7, 3, 168, 10, 3, 12, 3, 14, 3,
+	171, 11, 3, 3, 3, 3, 3, 3, 4, 6, 4, 176, 10, 4, 13, 4, 14, 4, 177, 3, 4,
+	3, 4, 3, 5, 3, 5, 3, 5, 3, 5, 3, 6, 3, 6, 3, 7, 3, 7, 3, 8, 3, 8, 3, 9,
+	3, 9, 3, 10, 3, 10, 3, 11, 3, 11, 3, 12, 3, 12, 3, 13, 3, 13, 3, 14, 3,
+	14, 3, 15, 3, 15, 3, 16, 3, 16, 3, 17, 3, 17, 3, 18, 3, 18, 3, 18, 3, 19,
+	3, 19, 3, 19, 3, 20, 3, 20, 3, 20, 3, 21, 3, 21, 3, 21, 3, 22, 3, 22, 3,
+	23, 3, 23, 3, 24, 3, 24, 3, 25, 3, 25, 3, 26, 3, 26, 3, 27, 3, 27, 3, 27,
+	3, 28, 3, 28, 3, 28, 3, 29, 3, 29, 3, 29, 3, 29, 3, 29, 5, 29, 243, 10,
+	29, 3, 30, 3, 30, 3, 30, 3, 30, 5, 30, 249, 10, 30, 3, 31, 3, 31, 3, 31,
+	3, 32, 3, 32, 3, 33, 3, 33, 3, 34, 3, 34, 3, 34, 3, 35, 3, 35, 3, 35, 3,
+	36, 3, 36, 3, 36, 3, 36, 3, 37, 3, 37, 3, 37, 3, 37, 3, 37, 3, 37, 3, 37,
+	3, 38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 38, 3, 39, 3,
+	39, 3, 39, 3, 39, 3, 39, 3, 39, 3, 39, 3, 40, 3, 40, 3, 40, 3, 40, 3, 40,
+	3, 41, 3, 41, 3, 41, 3, 41, 3, 41, 3, 41, 3, 42, 3, 42, 3, 42, 3, 42, 3,
+	43, 3, 43, 3, 43, 3, 43, 3, 43, 3, 43, 3, 43, 3, 43, 3, 44, 3, 44, 3, 44,
+	3, 44, 3, 44, 3, 44, 3, 44, 5, 44, 321, 10, 44, 3, 45, 3, 45, 3, 45, 3,
+	45, 3, 45, 3, 46, 3, 46, 3, 46, 3, 46, 3, 46, 3, 47, 3, 47, 3, 47, 3, 47,
+	3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3, 47, 3,
+	47, 3, 47, 3, 47, 3, 47, 5, 47, 351, 10, 47, 3, 48, 3, 48, 3, 48, 3, 48,
+	3, 48, 3, 49, 3, 49, 3, 49, 3, 49, 3, 49, 3, 50, 3, 50, 3, 50, 3, 50, 3,
+	50, 3, 51, 3, 51, 3, 51, 3, 51, 3, 51, 3, 51, 3, 52, 3, 52, 3, 52, 3, 52,
+	3, 53, 3, 53, 3, 53, 3, 53, 3, 54, 3, 54, 3, 54, 3, 54, 3, 54, 3, 54, 3,
+	54, 3, 54, 3, 54, 3, 54, 3, 55, 3, 55, 3, 55, 3, 55, 3, 55, 3, 56, 3, 56,
+	3, 56, 3, 56, 5, 56, 401, 10, 56, 3, 57, 3, 57, 3, 57, 3, 58, 3, 58, 3,
+	59, 6, 59, 409, 10, 59, 13, 59, 14, 59, 410, 3, 59, 3, 59, 7, 59, 415,
+	10, 59, 12, 59, 14, 59, 418, 11, 59, 7, 59, 420, 10, 59, 12, 59, 14, 59,
+	423, 11, 59, 3, 59, 3, 59, 7, 59, 427, 10, 59, 12, 59, 14, 59, 430, 11,
+	59, 7, 59, 432, 10, 59, 12, 59, 14, 59, 435, 11, 59, 3, 60, 3, 60, 3, 60,
+	3, 60, 5, 60, 441, 10, 60, 3, 61, 6, 61, 444, 10, 61, 13, 61, 14, 61, 445,
+	3, 62, 3, 62, 3, 62, 6, 62, 451, 10, 62, 13, 62, 14, 62, 452, 3, 62, 5,
+	62, 456, 10, 62, 3, 62, 3, 62, 5, 62, 460, 10, 62, 5, 62, 462, 10, 62,
+	3, 63, 3, 63, 3, 63, 3, 64, 3, 64, 3, 65, 3, 65, 3, 65, 7, 65, 472, 10,
+	65, 12, 65, 14, 65, 475, 11, 65, 5, 65, 477, 10, 65, 3, 66, 3, 66, 5, 66,
+	481, 10, 66, 3, 66, 6, 66, 484, 10, 66, 13, 66, 14, 66, 485, 3, 67, 3,
+	67, 3, 68, 3, 68, 3, 69, 3, 69, 3, 70, 3, 70, 3, 70, 3, 70, 3, 70, 3, 70,
+	7, 70, 500, 10, 70, 12, 70, 14, 70, 503, 11, 70, 3, 70, 3, 70, 3, 71, 3,
+	71, 3, 71, 3, 71, 3, 71, 3, 71, 7, 71, 513, 10, 71, 12, 71, 14, 71, 516,
+	11, 71, 3, 71, 3, 71, 3, 72, 3, 72, 3, 72, 3, 72, 7, 72, 524, 10, 72, 12,
+	72, 14, 72, 527, 11, 72, 3, 72, 3, 72, 3, 73, 3, 73, 3, 73, 3, 73, 7, 73,
+	535, 10, 73, 12, 73, 14, 73, 538, 11, 73, 3, 73, 3, 73, 3, 74, 3, 74, 3,
+	74, 3, 155, 2, 75, 3, 3, 5, 4, 7, 5, 9, 6, 11, 7, 13, 8, 15, 9, 17, 10,
+	19, 11, 21, 12, 23, 13, 25, 14, 27, 15, 29, 16, 31, 17, 33, 18, 35, 19,
+	37, 20, 39, 21, 41, 22, 43, 23, 45, 24, 47, 25, 49, 26, 51, 27, 53, 28,
+	55, 29, 57, 30, 59, 31, 61, 32, 63, 33, 65, 34, 67, 35, 69, 36, 71, 37,
+	73, 38, 75, 39, 77, 40, 79, 41, 81, 42, 83, 43, 85, 44, 87, 45, 89, 46,
+	91, 47, 93, 48, 95, 49, 97, 50, 99, 51, 101, 52, 103, 53, 105, 54, 107,
+	55, 109, 56, 111, 57, 113, 58, 115, 59, 117, 60, 119, 61, 121, 62, 123,
+	63, 125, 64, 127, 2, 129, 2, 131, 2, 133, 2, 135, 2, 137, 2, 139, 2, 141,
+	2, 143, 2, 145, 2, 147, 2, 3, 2, 14, 5, 2, 12, 12, 15, 15, 8234, 8235,
+	6, 2, 11, 11, 13, 14, 34, 34, 162, 162, 3, 2, 50, 59, 5, 2, 50, 59, 67,
+	72, 99, 104, 3, 2, 51, 59, 4, 2, 71, 71, 103, 103, 4, 2, 45, 45, 47, 47,
+	4, 2, 67, 92, 99, 124, 4, 2, 36, 36, 94, 94, 4, 2, 41, 41, 94, 94, 3, 2,
+	98, 98, 3, 2, 182, 182, 2, 569, 2, 3, 3, 2, 2, 2, 2, 5, 3, 2, 2, 2, 2,
 	7, 3, 2, 2, 2, 2, 9, 3, 2, 2, 2, 2, 11, 3, 2, 2, 2, 2, 13, 3, 2, 2, 2,
 	2, 15, 3, 2, 2, 2, 2, 17, 3, 2, 2, 2, 2, 19, 3, 2, 2, 2, 2, 21, 3, 2, 2,
 	2, 2, 23, 3, 2, 2, 2, 2, 25, 3, 2, 2, 2, 2, 27, 3, 2, 2, 2, 2, 29, 3, 2,
@@ -96,160 +98,166 @@ var serializedLexerAtn = []uint16{
 	99, 3, 2, 2, 2, 2, 101, 3, 2, 2, 2, 2, 103, 3, 2, 2, 2, 2, 105, 3, 2, 2,
 	2, 2, 107, 3, 2, 2, 2, 2, 109, 3, 2, 2, 2, 2, 111, 3, 2, 2, 2, 2, 113,
 	3, 2, 2, 2, 2, 115, 3, 2, 2, 2, 2, 117, 3, 2, 2, 2, 2, 119, 3, 2, 2, 2,
-	2, 121, 3, 2, 2, 2, 2, 123, 3, 2, 2, 2, 2, 125, 3, 2, 2, 2, 2, 127, 3,
-	2, 2, 2, 3, 147, 3, 2, 2, 2, 5, 161, 3, 2, 2, 2, 7, 173, 3, 2, 2, 2, 9,
-	179, 3, 2, 2, 2, 11, 183, 3, 2, 2, 2, 13, 185, 3, 2, 2, 2, 15, 187, 3,
-	2, 2, 2, 17, 189, 3, 2, 2, 2, 19, 191, 3, 2, 2, 2, 21, 193, 3, 2, 2, 2,
-	23, 195, 3, 2, 2, 2, 25, 197, 3, 2, 2, 2, 27, 199, 3, 2, 2, 2, 29, 201,
-	3, 2, 2, 2, 31, 203, 3, 2, 2, 2, 33, 205, 3, 2, 2, 2, 35, 207, 3, 2, 2,
-	2, 37, 210, 3, 2, 2, 2, 39, 213, 3, 2, 2, 2, 41, 216, 3, 2, 2, 2, 43, 219,
-	3, 2, 2, 2, 45, 221, 3, 2, 2, 2, 47, 223, 3, 2, 2, 2, 49, 225, 3, 2, 2,
-	2, 51, 227, 3, 2, 2, 2, 53, 229, 3, 2, 2, 2, 55, 232, 3, 2, 2, 2, 57, 240,
-	3, 2, 2, 2, 59, 246, 3, 2, 2, 2, 61, 248, 3, 2, 2, 2, 63, 251, 3, 2, 2,
-	2, 65, 253, 3, 2, 2, 2, 67, 255, 3, 2, 2, 2, 69, 258, 3, 2, 2, 2, 71, 261,
-	3, 2, 2, 2, 73, 265, 3, 2, 2, 2, 75, 272, 3, 2, 2, 2, 77, 281, 3, 2, 2,
-	2, 79, 288, 3, 2, 2, 2, 81, 293, 3, 2, 2, 2, 83, 299, 3, 2, 2, 2, 85, 303,
-	3, 2, 2, 2, 87, 318, 3, 2, 2, 2, 89, 320, 3, 2, 2, 2, 91, 325, 3, 2, 2,
-	2, 93, 348, 3, 2, 2, 2, 95, 350, 3, 2, 2, 2, 97, 355, 3, 2, 2, 2, 99, 360,
-	3, 2, 2, 2, 101, 365, 3, 2, 2, 2, 103, 371, 3, 2, 2, 2, 105, 375, 3, 2,
-	2, 2, 107, 379, 3, 2, 2, 2, 109, 389, 3, 2, 2, 2, 111, 398, 3, 2, 2, 2,
-	113, 400, 3, 2, 2, 2, 115, 403, 3, 2, 2, 2, 117, 406, 3, 2, 2, 2, 119,
-	436, 3, 2, 2, 2, 121, 438, 3, 2, 2, 2, 123, 450, 3, 2, 2, 2, 125, 468,
-	3, 2, 2, 2, 127, 470, 3, 2, 2, 2, 129, 473, 3, 2, 2, 2, 131, 483, 3, 2,
-	2, 2, 133, 485, 3, 2, 2, 2, 135, 494, 3, 2, 2, 2, 137, 496, 3, 2, 2, 2,
-	139, 498, 3, 2, 2, 2, 141, 500, 3, 2, 2, 2, 143, 513, 3, 2, 2, 2, 145,
-	526, 3, 2, 2, 2, 147, 148, 7, 49, 2, 2, 148, 149, 7, 44, 2, 2, 149, 153,
-	3, 2, 2, 2, 150, 152, 11, 2, 2, 2, 151, 150, 3, 2, 2, 2, 152, 155, 3, 2,
-	2, 2, 153, 154, 3, 2, 2, 2, 153, 151, 3, 2, 2, 2, 154, 156, 3, 2, 2, 2,
-	155, 153, 3, 2, 2, 2, 156, 157, 7, 44, 2, 2, 157, 158, 7, 49, 2, 2, 158,
-	159, 3, 2, 2, 2, 159, 160, 8, 2, 2, 2, 160, 4, 3, 2, 2, 2, 161, 162, 7,
-	49, 2, 2, 162, 163, 7, 49, 2, 2, 163, 167, 3, 2, 2, 2, 164, 166, 10, 2,
-	2, 2, 165, 164, 3, 2, 2, 2, 166, 169, 3, 2, 2, 2, 167, 165, 3, 2, 2, 2,
-	167, 168, 3, 2, 2, 2, 168, 170, 3, 2, 2, 2, 169, 167, 3, 2, 2, 2, 170,
-	171, 8, 3, 2, 2, 171, 6, 3, 2, 2, 2, 172, 174, 9, 3, 2, 2, 173, 172, 3,
-	2, 2, 2, 174, 175, 3, 2, 2, 2, 175, 173, 3, 2, 2, 2, 175, 176, 3, 2, 2,
-	2, 176, 177, 3, 2, 2, 2, 177, 178, 8, 4, 2, 2, 178, 8, 3, 2, 2, 2, 179,
-	180, 9, 2, 2, 2, 180, 181, 3, 2, 2, 2, 181, 182, 8, 5, 2, 2, 182, 10, 3,
-	2, 2, 2, 183, 184, 7, 60, 2, 2, 184, 12, 3, 2, 2, 2, 185, 186, 7, 61, 2,
-	2, 186, 14, 3, 2, 2, 2, 187, 188, 7, 48, 2, 2, 188, 16, 3, 2, 2, 2, 189,
-	190, 7, 46, 2, 2, 190, 18, 3, 2, 2, 2, 191, 192, 7, 93, 2, 2, 192, 20,
-	3, 2, 2, 2, 193, 194, 7, 95, 2, 2, 194, 22, 3, 2, 2, 2, 195, 196, 7, 42,
-	2, 2, 196, 24, 3, 2, 2, 2, 197, 198, 7, 43, 2, 2, 198, 26, 3, 2, 2, 2,
-	199, 200, 7, 125, 2, 2, 200, 28, 3, 2, 2, 2, 201, 202, 7, 127, 2, 2, 202,
-	30, 3, 2, 2, 2, 203, 204, 7, 64, 2, 2, 204, 32, 3, 2, 2, 2, 205, 206, 7,
-	62, 2, 2, 206, 34, 3, 2, 2, 2, 207, 208, 7, 63, 2, 2, 208, 209, 7, 63,
-	2, 2, 209, 36, 3, 2, 2, 2, 210, 211, 7, 64, 2, 2, 211, 212, 7, 63, 2, 2,
-	212, 38, 3, 2, 2, 2, 213, 214, 7, 62, 2, 2, 214, 215, 7, 63, 2, 2, 215,
-	40, 3, 2, 2, 2, 216, 217, 7, 35, 2, 2, 217, 218, 7, 63, 2, 2, 218, 42,
-	3, 2, 2, 2, 219, 220, 7, 44, 2, 2, 220, 44, 3, 2, 2, 2, 221, 222, 7, 49,
-	2, 2, 222, 46, 3, 2, 2, 2, 223, 224, 7, 39, 2, 2, 224, 48, 3, 2, 2, 2,
-	225, 226, 7, 45, 2, 2, 226, 50, 3, 2, 2, 2, 227, 228, 7, 47, 2, 2, 228,
-	52, 3, 2, 2, 2, 229, 230, 7, 47, 2, 2, 230, 231, 7, 47, 2, 2, 231, 54,
-	3, 2, 2, 2, 232, 233, 7, 45, 2, 2, 233, 234, 7, 45, 2, 2, 234, 56, 3, 2,
-	2, 2, 235, 236, 7, 67, 2, 2, 236, 237, 7, 80, 2, 2, 237, 241, 7, 70, 2,
-	2, 238, 239, 7, 40, 2, 2, 239, 241, 7, 40, 2, 2, 240, 235, 3, 2, 2, 2,
-	240, 238, 3, 2, 2, 2, 241, 58, 3, 2, 2, 2, 242, 243, 7, 81, 2, 2, 243,
-	247, 7, 84, 2, 2, 244, 245, 7, 126, 2, 2, 245, 247, 7, 126, 2, 2, 246,
-	242, 3, 2, 2, 2, 246, 244, 3, 2, 2, 2, 247, 60, 3, 2, 2, 2, 248, 249, 5,
-	15, 8, 2, 249, 250, 5, 15, 8, 2, 250, 62, 3, 2, 2, 2, 251, 252, 7, 63,
-	2, 2, 252, 64, 3, 2, 2, 2, 253, 254, 7, 65, 2, 2, 254, 66, 3, 2, 2, 2,
-	255, 256, 7, 35, 2, 2, 256, 257, 7, 128, 2, 2, 257, 68, 3, 2, 2, 2, 258,
-	259, 7, 63, 2, 2, 259, 260, 7, 128, 2, 2, 260, 70, 3, 2, 2, 2, 261, 262,
-	7, 72, 2, 2, 262, 263, 7, 81, 2, 2, 263, 264, 7, 84, 2, 2, 264, 72, 3,
-	2, 2, 2, 265, 266, 7, 84, 2, 2, 266, 267, 7, 71, 2, 2, 267, 268, 7, 86,
-	2, 2, 268, 269, 7, 87, 2, 2, 269, 270, 7, 84, 2, 2, 270, 271, 7, 80, 2,
-	2, 271, 74, 3, 2, 2, 2, 272, 273, 7, 70, 2, 2, 273, 274, 7, 75, 2, 2, 274,
-	275, 7, 85, 2, 2, 275, 276, 7, 86, 2, 2, 276, 277, 7, 75, 2, 2, 277, 278,
-	7, 80, 2, 2, 278, 279, 7, 69, 2, 2, 279, 280, 7, 86, 2, 2, 280, 76, 3,
-	2, 2, 2, 281, 282, 7, 72, 2, 2, 282, 283, 7, 75, 2, 2, 283, 284, 7, 78,
-	2, 2, 284, 285, 7, 86, 2, 2, 285, 286, 7, 71, 2, 2, 286, 287, 7, 84, 2,
-	2, 287, 78, 3, 2, 2, 2, 288, 289, 7, 85, 2, 2, 289, 290, 7, 81, 2, 2, 290,
-	291, 7, 84, 2, 2, 291, 292, 7, 86, 2, 2, 292, 80, 3, 2, 2, 2, 293, 294,
-	7, 78, 2, 2, 294, 295, 7, 75, 2, 2, 295, 296, 7, 79, 2, 2, 296, 297, 7,
-	75, 2, 2, 297, 298, 7, 86, 2, 2, 298, 82, 3, 2, 2, 2, 299, 300, 7, 78,
-	2, 2, 300, 301, 7, 71, 2, 2, 301, 302, 7, 86, 2, 2, 302, 84, 3, 2, 2, 2,
-	303, 304, 7, 69, 2, 2, 304, 305, 7, 81, 2, 2, 305, 306, 7, 78, 2, 2, 306,
-	307, 7, 78, 2, 2, 307, 308, 7, 71, 2, 2, 308, 309, 7, 69, 2, 2, 309, 310,
-	7, 86, 2, 2, 310, 86, 3, 2, 2, 2, 311, 312, 7, 67, 2, 2, 312, 313, 7, 85,
-	2, 2, 313, 319, 7, 69, 2, 2, 314, 315, 7, 70, 2, 2, 315, 316, 7, 71, 2,
-	2, 316, 317, 7, 85, 2, 2, 317, 319, 7, 69, 2, 2, 318, 311, 3, 2, 2, 2,
-	318, 314, 3, 2, 2, 2, 319, 88, 3, 2, 2, 2, 320, 321, 7, 80, 2, 2, 321,
-	322, 7, 81, 2, 2, 322, 323, 7, 80, 2, 2, 323, 324, 7, 71, 2, 2, 324, 90,
-	3, 2, 2, 2, 325, 326, 7, 80, 2, 2, 326, 327, 7, 87, 2, 2, 327, 328, 7,
-	78, 2, 2, 328, 329, 7, 78, 2, 2, 329, 92, 3, 2, 2, 2, 330, 331, 7, 86,
-	2, 2, 331, 332, 7, 84, 2, 2, 332, 333, 7, 87, 2, 2, 333, 349, 7, 71, 2,
-	2, 334, 335, 7, 118, 2, 2, 335, 336, 7, 116, 2, 2, 336, 337, 7, 119, 2,
-	2, 337, 349, 7, 103, 2, 2, 338, 339, 7, 72, 2, 2, 339, 340, 7, 67, 2, 2,
-	340, 341, 7, 78, 2, 2, 341, 342, 7, 85, 2, 2, 342, 349, 7, 71, 2, 2, 343,
-	344, 7, 104, 2, 2, 344, 345, 7, 99, 2, 2, 345, 346, 7, 110, 2, 2, 346,
-	347, 7, 117, 2, 2, 347, 349, 7, 103, 2, 2, 348, 330, 3, 2, 2, 2, 348, 334,
-	3, 2, 2, 2, 348, 338, 3, 2, 2, 2, 348, 343, 3, 2, 2, 2, 349, 94, 3, 2,
-	2, 2, 350, 351, 7, 75, 2, 2, 351, 352, 7, 80, 2, 2, 352, 353, 7, 86, 2,
-	2, 353, 354, 7, 81, 2, 2, 354, 96, 3, 2, 2, 2, 355, 356, 7, 77, 2, 2, 356,
-	357, 7, 71, 2, 2, 357, 358, 7, 71, 2, 2, 358, 359, 7, 82, 2, 2, 359, 98,
-	3, 2, 2, 2, 360, 361, 7, 89, 2, 2, 361, 362, 7, 75, 2, 2, 362, 363, 7,
-	86, 2, 2, 363, 364, 7, 74, 2, 2, 364, 100, 3, 2, 2, 2, 365, 366, 7, 69,
-	2, 2, 366, 367, 7, 81, 2, 2, 367, 368, 7, 87, 2, 2, 368, 369, 7, 80, 2,
-	2, 369, 370, 7, 86, 2, 2, 370, 102, 3, 2, 2, 2, 371, 372, 7, 67, 2, 2,
-	372, 373, 7, 78, 2, 2, 373, 374, 7, 78, 2, 2, 374, 104, 3, 2, 2, 2, 375,
-	376, 7, 67, 2, 2, 376, 377, 7, 80, 2, 2, 377, 378, 7, 91, 2, 2, 378, 106,
-	3, 2, 2, 2, 379, 380, 7, 67, 2, 2, 380, 381, 7, 73, 2, 2, 381, 382, 7,
-	73, 2, 2, 382, 383, 7, 84, 2, 2, 383, 384, 7, 71, 2, 2, 384, 385, 7, 73,
-	2, 2, 385, 386, 7, 67, 2, 2, 386, 387, 7, 86, 2, 2, 387, 388, 7, 71, 2,
-	2, 388, 108, 3, 2, 2, 2, 389, 390, 7, 78, 2, 2, 390, 391, 7, 75, 2, 2,
-	391, 392, 7, 77, 2, 2, 392, 393, 7, 71, 2, 2, 393, 110, 3, 2, 2, 2, 394,
-	395, 7, 80, 2, 2, 395, 396, 7, 81, 2, 2, 396, 399, 7, 86, 2, 2, 397, 399,
-	7, 35, 2, 2, 398, 394, 3, 2, 2, 2, 398, 397, 3, 2, 2, 2, 399, 112, 3, 2,
-	2, 2, 400, 401, 7, 75, 2, 2, 401, 402, 7, 80, 2, 2, 402, 114, 3, 2, 2,
-	2, 403, 404, 7, 66, 2, 2, 404, 116, 3, 2, 2, 2, 405, 407, 5, 135, 68, 2,
-	406, 405, 3, 2, 2, 2, 407, 408, 3, 2, 2, 2, 408, 406, 3, 2, 2, 2, 408,
-	409, 3, 2, 2, 2, 409, 419, 3, 2, 2, 2, 410, 414, 5, 137, 69, 2, 411, 413,
-	5, 117, 59, 2, 412, 411, 3, 2, 2, 2, 413, 416, 3, 2, 2, 2, 414, 412, 3,
-	2, 2, 2, 414, 415, 3, 2, 2, 2, 415, 418, 3, 2, 2, 2, 416, 414, 3, 2, 2,
-	2, 417, 410, 3, 2, 2, 2, 418, 421, 3, 2, 2, 2, 419, 417, 3, 2, 2, 2, 419,
-	420, 3, 2, 2, 2, 420, 431, 3, 2, 2, 2, 421, 419, 3, 2, 2, 2, 422, 426,
-	5, 139, 70, 2, 423, 425, 5, 117, 59, 2, 424, 423, 3, 2, 2, 2, 425, 428,
-	3, 2, 2, 2, 426, 424, 3, 2, 2, 2, 426, 427, 3, 2, 2, 2, 427, 430, 3, 2,
-	2, 2, 428, 426, 3, 2, 2, 2, 429, 422, 3, 2, 2, 2, 430, 433, 3, 2, 2, 2,
-	431, 429, 3, 2, 2, 2, 431, 432, 3, 2, 2, 2, 432, 118, 3, 2, 2, 2, 433,
-	431, 3, 2, 2, 2, 434, 437, 5, 143, 72, 2, 435, 437, 5, 141, 71, 2, 436,
-	434, 3, 2, 2, 2, 436, 435, 3, 2, 2, 2, 437, 120, 3, 2, 2, 2, 438, 444,
-	7, 98, 2, 2, 439, 440, 7, 94, 2, 2, 440, 443, 7, 98, 2, 2, 441, 443, 10,
-	4, 2, 2, 442, 439, 3, 2, 2, 2, 442, 441, 3, 2, 2, 2, 443, 446, 3, 2, 2,
-	2, 444, 442, 3, 2, 2, 2, 444, 445, 3, 2, 2, 2, 445, 447, 3, 2, 2, 2, 446,
-	444, 3, 2, 2, 2, 447, 448, 7, 98, 2, 2, 448, 122, 3, 2, 2, 2, 449, 451,
-	9, 5, 2, 2, 450, 449, 3, 2, 2, 2, 451, 452, 3, 2, 2, 2, 452, 450, 3, 2,
-	2, 2, 452, 453, 3, 2, 2, 2, 453, 124, 3, 2, 2, 2, 454, 455, 5, 131, 66,
-	2, 455, 457, 5, 15, 8, 2, 456, 458, 9, 5, 2, 2, 457, 456, 3, 2, 2, 2, 458,
-	459, 3, 2, 2, 2, 459, 457, 3, 2, 2, 2, 459, 460, 3, 2, 2, 2, 460, 462,
-	3, 2, 2, 2, 461, 463, 5, 133, 67, 2, 462, 461, 3, 2, 2, 2, 462, 463, 3,
-	2, 2, 2, 463, 469, 3, 2, 2, 2, 464, 466, 5, 131, 66, 2, 465, 467, 5, 133,
-	67, 2, 466, 465, 3, 2, 2, 2, 466, 467, 3, 2, 2, 2, 467, 469, 3, 2, 2, 2,
-	468, 454, 3, 2, 2, 2, 468, 464, 3, 2, 2, 2, 469, 126, 3, 2, 2, 2, 470,
-	471, 5, 117, 59, 2, 471, 472, 5, 145, 73, 2, 472, 128, 3, 2, 2, 2, 473,
-	474, 9, 6, 2, 2, 474, 130, 3, 2, 2, 2, 475, 484, 7, 50, 2, 2, 476, 480,
-	9, 7, 2, 2, 477, 479, 9, 5, 2, 2, 478, 477, 3, 2, 2, 2, 479, 482, 3, 2,
-	2, 2, 480, 478, 3, 2, 2, 2, 480, 481, 3, 2, 2, 2, 481, 484, 3, 2, 2, 2,
-	482, 480, 3, 2, 2, 2, 483, 475, 3, 2, 2, 2, 483, 476, 3, 2, 2, 2, 484,
-	132, 3, 2, 2, 2, 485, 487, 9, 8, 2, 2, 486, 488, 9, 9, 2, 2, 487, 486,
-	3, 2, 2, 2, 487, 488, 3, 2, 2, 2, 488, 490, 3, 2, 2, 2, 489, 491, 9, 5,
-	2, 2, 490, 489, 3, 2, 2, 2, 491, 492, 3, 2, 2, 2, 492, 490, 3, 2, 2, 2,
-	492, 493, 3, 2, 2, 2, 493, 134, 3, 2, 2, 2, 494, 495, 9, 10, 2, 2, 495,
-	136, 3, 2, 2, 2, 496, 497, 7, 97, 2, 2, 497, 138, 3, 2, 2, 2, 498, 499,
-	4, 50, 59, 2, 499, 140, 3, 2, 2, 2, 500, 508, 7, 36, 2, 2, 501, 502, 7,
-	94, 2, 2, 502, 507, 11, 2, 2, 2, 503, 504, 7, 36, 2, 2, 504, 507, 7, 36,
-	2, 2, 505, 507, 10, 11, 2, 2, 506, 501, 3, 2, 2, 2, 506, 503, 3, 2, 2,
-	2, 506, 505, 3, 2, 2, 2, 507, 510, 3, 2, 2, 2, 508, 506, 3, 2, 2, 2, 508,
-	509, 3, 2, 2, 2, 509, 511, 3, 2, 2, 2, 510, 508, 3, 2, 2, 2, 511, 512,
-	7, 36, 2, 2, 512, 142, 3, 2, 2, 2, 513, 521, 7, 41, 2, 2, 514, 515, 7,
-	94, 2, 2, 515, 520, 11, 2, 2, 2, 516, 517, 7, 41, 2, 2, 517, 520, 7, 41,
-	2, 2, 518, 520, 10, 12, 2, 2, 519, 514, 3, 2, 2, 2, 519, 516, 3, 2, 2,
-	2, 519, 518, 3, 2, 2, 2, 520, 523, 3, 2, 2, 2, 521, 519, 3, 2, 2, 2, 521,
-	522, 3, 2, 2, 2, 522, 524, 3, 2, 2, 2, 523, 521, 3, 2, 2, 2, 524, 525,
-	7, 41, 2, 2, 525, 144, 3, 2, 2, 2, 526, 527, 7, 60, 2, 2, 527, 528, 7,
-	60, 2, 2, 528, 146, 3, 2, 2, 2, 32, 2, 153, 167, 175, 240, 246, 318, 348,
-	398, 408, 414, 419, 426, 431, 436, 442, 444, 452, 459, 462, 466, 468, 480,
-	483, 487, 492, 506, 508, 519, 521, 3, 2, 3, 2,
+	2, 121, 3, 2, 2, 2, 2, 123, 3, 2, 2, 2, 2, 125, 3, 2, 2, 2, 3, 149, 3,
+	2, 2, 2, 5, 163, 3, 2, 2, 2, 7, 175, 3, 2, 2, 2, 9, 181, 3, 2, 2, 2, 11,
+	185, 3, 2, 2, 2, 13, 187, 3, 2, 2, 2, 15, 189, 3, 2, 2, 2, 17, 191, 3,
+	2, 2, 2, 19, 193, 3, 2, 2, 2, 21, 195, 3, 2, 2, 2, 23, 197, 3, 2, 2, 2,
+	25, 199, 3, 2, 2, 2, 27, 201, 3, 2, 2, 2, 29, 203, 3, 2, 2, 2, 31, 205,
+	3, 2, 2, 2, 33, 207, 3, 2, 2, 2, 35, 209, 3, 2, 2, 2, 37, 212, 3, 2, 2,
+	2, 39, 215, 3, 2, 2, 2, 41, 218, 3, 2, 2, 2, 43, 221, 3, 2, 2, 2, 45, 223,
+	3, 2, 2, 2, 47, 225, 3, 2, 2, 2, 49, 227, 3, 2, 2, 2, 51, 229, 3, 2, 2,
+	2, 53, 231, 3, 2, 2, 2, 55, 234, 3, 2, 2, 2, 57, 242, 3, 2, 2, 2, 59, 248,
+	3, 2, 2, 2, 61, 250, 3, 2, 2, 2, 63, 253, 3, 2, 2, 2, 65, 255, 3, 2, 2,
+	2, 67, 257, 3, 2, 2, 2, 69, 260, 3, 2, 2, 2, 71, 263, 3, 2, 2, 2, 73, 267,
+	3, 2, 2, 2, 75, 274, 3, 2, 2, 2, 77, 283, 3, 2, 2, 2, 79, 290, 3, 2, 2,
+	2, 81, 295, 3, 2, 2, 2, 83, 301, 3, 2, 2, 2, 85, 305, 3, 2, 2, 2, 87, 320,
+	3, 2, 2, 2, 89, 322, 3, 2, 2, 2, 91, 327, 3, 2, 2, 2, 93, 350, 3, 2, 2,
+	2, 95, 352, 3, 2, 2, 2, 97, 357, 3, 2, 2, 2, 99, 362, 3, 2, 2, 2, 101,
+	367, 3, 2, 2, 2, 103, 373, 3, 2, 2, 2, 105, 377, 3, 2, 2, 2, 107, 381,
+	3, 2, 2, 2, 109, 391, 3, 2, 2, 2, 111, 400, 3, 2, 2, 2, 113, 402, 3, 2,
+	2, 2, 115, 405, 3, 2, 2, 2, 117, 408, 3, 2, 2, 2, 119, 440, 3, 2, 2, 2,
+	121, 443, 3, 2, 2, 2, 123, 461, 3, 2, 2, 2, 125, 463, 3, 2, 2, 2, 127,
+	466, 3, 2, 2, 2, 129, 476, 3, 2, 2, 2, 131, 478, 3, 2, 2, 2, 133, 487,
+	3, 2, 2, 2, 135, 489, 3, 2, 2, 2, 137, 491, 3, 2, 2, 2, 139, 493, 3, 2,
+	2, 2, 141, 506, 3, 2, 2, 2, 143, 519, 3, 2, 2, 2, 145, 530, 3, 2, 2, 2,
+	147, 541, 3, 2, 2, 2, 149, 150, 7, 49, 2, 2, 150, 151, 7, 44, 2, 2, 151,
+	155, 3, 2, 2, 2, 152, 154, 11, 2, 2, 2, 153, 152, 3, 2, 2, 2, 154, 157,
+	3, 2, 2, 2, 155, 156, 3, 2, 2, 2, 155, 153, 3, 2, 2, 2, 156, 158, 3, 2,
+	2, 2, 157, 155, 3, 2, 2, 2, 158, 159, 7, 44, 2, 2, 159, 160, 7, 49, 2,
+	2, 160, 161, 3, 2, 2, 2, 161, 162, 8, 2, 2, 2, 162, 4, 3, 2, 2, 2, 163,
+	164, 7, 49, 2, 2, 164, 165, 7, 49, 2, 2, 165, 169, 3, 2, 2, 2, 166, 168,
+	10, 2, 2, 2, 167, 166, 3, 2, 2, 2, 168, 171, 3, 2, 2, 2, 169, 167, 3, 2,
+	2, 2, 169, 170, 3, 2, 2, 2, 170, 172, 3, 2, 2, 2, 171, 169, 3, 2, 2, 2,
+	172, 173, 8, 3, 2, 2, 173, 6, 3, 2, 2, 2, 174, 176, 9, 3, 2, 2, 175, 174,
+	3, 2, 2, 2, 176, 177, 3, 2, 2, 2, 177, 175, 3, 2, 2, 2, 177, 178, 3, 2,
+	2, 2, 178, 179, 3, 2, 2, 2, 179, 180, 8, 4, 2, 2, 180, 8, 3, 2, 2, 2, 181,
+	182, 9, 2, 2, 2, 182, 183, 3, 2, 2, 2, 183, 184, 8, 5, 2, 2, 184, 10, 3,
+	2, 2, 2, 185, 186, 7, 60, 2, 2, 186, 12, 3, 2, 2, 2, 187, 188, 7, 61, 2,
+	2, 188, 14, 3, 2, 2, 2, 189, 190, 7, 48, 2, 2, 190, 16, 3, 2, 2, 2, 191,
+	192, 7, 46, 2, 2, 192, 18, 3, 2, 2, 2, 193, 194, 7, 93, 2, 2, 194, 20,
+	3, 2, 2, 2, 195, 196, 7, 95, 2, 2, 196, 22, 3, 2, 2, 2, 197, 198, 7, 42,
+	2, 2, 198, 24, 3, 2, 2, 2, 199, 200, 7, 43, 2, 2, 200, 26, 3, 2, 2, 2,
+	201, 202, 7, 125, 2, 2, 202, 28, 3, 2, 2, 2, 203, 204, 7, 127, 2, 2, 204,
+	30, 3, 2, 2, 2, 205, 206, 7, 64, 2, 2, 206, 32, 3, 2, 2, 2, 207, 208, 7,
+	62, 2, 2, 208, 34, 3, 2, 2, 2, 209, 210, 7, 63, 2, 2, 210, 211, 7, 63,
+	2, 2, 211, 36, 3, 2, 2, 2, 212, 213, 7, 64, 2, 2, 213, 214, 7, 63, 2, 2,
+	214, 38, 3, 2, 2, 2, 215, 216, 7, 62, 2, 2, 216, 217, 7, 63, 2, 2, 217,
+	40, 3, 2, 2, 2, 218, 219, 7, 35, 2, 2, 219, 220, 7, 63, 2, 2, 220, 42,
+	3, 2, 2, 2, 221, 222, 7, 44, 2, 2, 222, 44, 3, 2, 2, 2, 223, 224, 7, 49,
+	2, 2, 224, 46, 3, 2, 2, 2, 225, 226, 7, 39, 2, 2, 226, 48, 3, 2, 2, 2,
+	227, 228, 7, 45, 2, 2, 228, 50, 3, 2, 2, 2, 229, 230, 7, 47, 2, 2, 230,
+	52, 3, 2, 2, 2, 231, 232, 7, 47, 2, 2, 232, 233, 7, 47, 2, 2, 233, 54,
+	3, 2, 2, 2, 234, 235, 7, 45, 2, 2, 235, 236, 7, 45, 2, 2, 236, 56, 3, 2,
+	2, 2, 237, 238, 7, 67, 2, 2, 238, 239, 7, 80, 2, 2, 239, 243, 7, 70, 2,
+	2, 240, 241, 7, 40, 2, 2, 241, 243, 7, 40, 2, 2, 242, 237, 3, 2, 2, 2,
+	242, 240, 3, 2, 2, 2, 243, 58, 3, 2, 2, 2, 244, 245, 7, 81, 2, 2, 245,
+	249, 7, 84, 2, 2, 246, 247, 7, 126, 2, 2, 247, 249, 7, 126, 2, 2, 248,
+	244, 3, 2, 2, 2, 248, 246, 3, 2, 2, 2, 249, 60, 3, 2, 2, 2, 250, 251, 5,
+	15, 8, 2, 251, 252, 5, 15, 8, 2, 252, 62, 3, 2, 2, 2, 253, 254, 7, 63,
+	2, 2, 254, 64, 3, 2, 2, 2, 255, 256, 7, 65, 2, 2, 256, 66, 3, 2, 2, 2,
+	257, 258, 7, 35, 2, 2, 258, 259, 7, 128, 2, 2, 259, 68, 3, 2, 2, 2, 260,
+	261, 7, 63, 2, 2, 261, 262, 7, 128, 2, 2, 262, 70, 3, 2, 2, 2, 263, 264,
+	7, 72, 2, 2, 264, 265, 7, 81, 2, 2, 265, 266, 7, 84, 2, 2, 266, 72, 3,
+	2, 2, 2, 267, 268, 7, 84, 2, 2, 268, 269, 7, 71, 2, 2, 269, 270, 7, 86,
+	2, 2, 270, 271, 7, 87, 2, 2, 271, 272, 7, 84, 2, 2, 272, 273, 7, 80, 2,
+	2, 273, 74, 3, 2, 2, 2, 274, 275, 7, 70, 2, 2, 275, 276, 7, 75, 2, 2, 276,
+	277, 7, 85, 2, 2, 277, 278, 7, 86, 2, 2, 278, 279, 7, 75, 2, 2, 279, 280,
+	7, 80, 2, 2, 280, 281, 7, 69, 2, 2, 281, 282, 7, 86, 2, 2, 282, 76, 3,
+	2, 2, 2, 283, 284, 7, 72, 2, 2, 284, 285, 7, 75, 2, 2, 285, 286, 7, 78,
+	2, 2, 286, 287, 7, 86, 2, 2, 287, 288, 7, 71, 2, 2, 288, 289, 7, 84, 2,
+	2, 289, 78, 3, 2, 2, 2, 290, 291, 7, 85, 2, 2, 291, 292, 7, 81, 2, 2, 292,
+	293, 7, 84, 2, 2, 293, 294, 7, 86, 2, 2, 294, 80, 3, 2, 2, 2, 295, 296,
+	7, 78, 2, 2, 296, 297, 7, 75, 2, 2, 297, 298, 7, 79, 2, 2, 298, 299, 7,
+	75, 2, 2, 299, 300, 7, 86, 2, 2, 300, 82, 3, 2, 2, 2, 301, 302, 7, 78,
+	2, 2, 302, 303, 7, 71, 2, 2, 303, 304, 7, 86, 2, 2, 304, 84, 3, 2, 2, 2,
+	305, 306, 7, 69, 2, 2, 306, 307, 7, 81, 2, 2, 307, 308, 7, 78, 2, 2, 308,
+	309, 7, 78, 2, 2, 309, 310, 7, 71, 2, 2, 310, 311, 7, 69, 2, 2, 311, 312,
+	7, 86, 2, 2, 312, 86, 3, 2, 2, 2, 313, 314, 7, 67, 2, 2, 314, 315, 7, 85,
+	2, 2, 315, 321, 7, 69, 2, 2, 316, 317, 7, 70, 2, 2, 317, 318, 7, 71, 2,
+	2, 318, 319, 7, 85, 2, 2, 319, 321, 7, 69, 2, 2, 320, 313, 3, 2, 2, 2,
+	320, 316, 3, 2, 2, 2, 321, 88, 3, 2, 2, 2, 322, 323, 7, 80, 2, 2, 323,
+	324, 7, 81, 2, 2, 324, 325, 7, 80, 2, 2, 325, 326, 7, 71, 2, 2, 326, 90,
+	3, 2, 2, 2, 327, 328, 7, 80, 2, 2, 328, 329, 7, 87, 2, 2, 329, 330, 7,
+	78, 2, 2, 330, 331, 7, 78, 2, 2, 331, 92, 3, 2, 2, 2, 332, 333, 7, 86,
+	2, 2, 333, 334, 7, 84, 2, 2, 334, 335, 7, 87, 2, 2, 335, 351, 7, 71, 2,
+	2, 336, 337, 7, 118, 2, 2, 337, 338, 7, 116, 2, 2, 338, 339, 7, 119, 2,
+	2, 339, 351, 7, 103, 2, 2, 340, 341, 7, 72, 2, 2, 341, 342, 7, 67, 2, 2,
+	342, 343, 7, 78, 2, 2, 343, 344, 7, 85, 2, 2, 344, 351, 7, 71, 2, 2, 345,
+	346, 7, 104, 2, 2, 346, 347, 7, 99, 2, 2, 347, 348, 7, 110, 2, 2, 348,
+	349, 7, 117, 2, 2, 349, 351, 7, 103, 2, 2, 350, 332, 3, 2, 2, 2, 350, 336,
+	3, 2, 2, 2, 350, 340, 3, 2, 2, 2, 350, 345, 3, 2, 2, 2, 351, 94, 3, 2,
+	2, 2, 352, 353, 7, 75, 2, 2, 353, 354, 7, 80, 2, 2, 354, 355, 7, 86, 2,
+	2, 355, 356, 7, 81, 2, 2, 356, 96, 3, 2, 2, 2, 357, 358, 7, 77, 2, 2, 358,
+	359, 7, 71, 2, 2, 359, 360, 7, 71, 2, 2, 360, 361, 7, 82, 2, 2, 361, 98,
+	3, 2, 2, 2, 362, 363, 7, 89, 2, 2, 363, 364, 7, 75, 2, 2, 364, 365, 7,
+	86, 2, 2, 365, 366, 7, 74, 2, 2, 366, 100, 3, 2, 2, 2, 367, 368, 7, 69,
+	2, 2, 368, 369, 7, 81, 2, 2, 369, 370, 7, 87, 2, 2, 370, 371, 7, 80, 2,
+	2, 371, 372, 7, 86, 2, 2, 372, 102, 3, 2, 2, 2, 373, 374, 7, 67, 2, 2,
+	374, 375, 7, 78, 2, 2, 375, 376, 7, 78, 2, 2, 376, 104, 3, 2, 2, 2, 377,
+	378, 7, 67, 2, 2, 378, 379, 7, 80, 2, 2, 379, 380, 7, 91, 2, 2, 380, 106,
+	3, 2, 2, 2, 381, 382, 7, 67, 2, 2, 382, 383, 7, 73, 2, 2, 383, 384, 7,
+	73, 2, 2, 384, 385, 7, 84, 2, 2, 385, 386, 7, 71, 2, 2, 386, 387, 7, 73,
+	2, 2, 387, 388, 7, 67, 2, 2, 388, 389, 7, 86, 2, 2, 389, 390, 7, 71, 2,
+	2, 390, 108, 3, 2, 2, 2, 391, 392, 7, 78, 2, 2, 392, 393, 7, 75, 2, 2,
+	393, 394, 7, 77, 2, 2, 394, 395, 7, 71, 2, 2, 395, 110, 3, 2, 2, 2, 396,
+	397, 7, 80, 2, 2, 397, 398, 7, 81, 2, 2, 398, 401, 7, 86, 2, 2, 399, 401,
+	7, 35, 2, 2, 400, 396, 3, 2, 2, 2, 400, 399, 3, 2, 2, 2, 401, 112, 3, 2,
+	2, 2, 402, 403, 7, 75, 2, 2, 403, 404, 7, 80, 2, 2, 404, 114, 3, 2, 2,
+	2, 405, 406, 7, 66, 2, 2, 406, 116, 3, 2, 2, 2, 407, 409, 5, 133, 67, 2,
+	408, 407, 3, 2, 2, 2, 409, 410, 3, 2, 2, 2, 410, 408, 3, 2, 2, 2, 410,
+	411, 3, 2, 2, 2, 411, 421, 3, 2, 2, 2, 412, 416, 5, 135, 68, 2, 413, 415,
+	5, 117, 59, 2, 414, 413, 3, 2, 2, 2, 415, 418, 3, 2, 2, 2, 416, 414, 3,
+	2, 2, 2, 416, 417, 3, 2, 2, 2, 417, 420, 3, 2, 2, 2, 418, 416, 3, 2, 2,
+	2, 419, 412, 3, 2, 2, 2, 420, 423, 3, 2, 2, 2, 421, 419, 3, 2, 2, 2, 421,
+	422, 3, 2, 2, 2, 422, 433, 3, 2, 2, 2, 423, 421, 3, 2, 2, 2, 424, 428,
+	5, 137, 69, 2, 425, 427, 5, 117, 59, 2, 426, 425, 3, 2, 2, 2, 427, 430,
+	3, 2, 2, 2, 428, 426, 3, 2, 2, 2, 428, 429, 3, 2, 2, 2, 429, 432, 3, 2,
+	2, 2, 430, 428, 3, 2, 2, 2, 431, 424, 3, 2, 2, 2, 432, 435, 3, 2, 2, 2,
+	433, 431, 3, 2, 2, 2, 433, 434, 3, 2, 2, 2, 434, 118, 3, 2, 2, 2, 435,
+	433, 3, 2, 2, 2, 436, 441, 5, 141, 71, 2, 437, 441, 5, 139, 70, 2, 438,
+	441, 5, 143, 72, 2, 439, 441, 5, 145, 73, 2, 440, 436, 3, 2, 2, 2, 440,
+	437, 3, 2, 2, 2, 440, 438, 3, 2, 2, 2, 440, 439, 3, 2, 2, 2, 441, 120,
+	3, 2, 2, 2, 442, 444, 9, 4, 2, 2, 443, 442, 3, 2, 2, 2, 444, 445, 3, 2,
+	2, 2, 445, 443, 3, 2, 2, 2, 445, 446, 3, 2, 2, 2, 446, 122, 3, 2, 2, 2,
+	447, 448, 5, 129, 65, 2, 448, 450, 5, 15, 8, 2, 449, 451, 9, 4, 2, 2, 450,
+	449, 3, 2, 2, 2, 451, 452, 3, 2, 2, 2, 452, 450, 3, 2, 2, 2, 452, 453,
+	3, 2, 2, 2, 453, 455, 3, 2, 2, 2, 454, 456, 5, 131, 66, 2, 455, 454, 3,
+	2, 2, 2, 455, 456, 3, 2, 2, 2, 456, 462, 3, 2, 2, 2, 457, 459, 5, 129,
+	65, 2, 458, 460, 5, 131, 66, 2, 459, 458, 3, 2, 2, 2, 459, 460, 3, 2, 2,
+	2, 460, 462, 3, 2, 2, 2, 461, 447, 3, 2, 2, 2, 461, 457, 3, 2, 2, 2, 462,
+	124, 3, 2, 2, 2, 463, 464, 5, 117, 59, 2, 464, 465, 5, 147, 74, 2, 465,
+	126, 3, 2, 2, 2, 466, 467, 9, 5, 2, 2, 467, 128, 3, 2, 2, 2, 468, 477,
+	7, 50, 2, 2, 469, 473, 9, 6, 2, 2, 470, 472, 9, 4, 2, 2, 471, 470, 3, 2,
+	2, 2, 472, 475, 3, 2, 2, 2, 473, 471, 3, 2, 2, 2, 473, 474, 3, 2, 2, 2,
+	474, 477, 3, 2, 2, 2, 475, 473, 3, 2, 2, 2, 476, 468, 3, 2, 2, 2, 476,
+	469, 3, 2, 2, 2, 477, 130, 3, 2, 2, 2, 478, 480, 9, 7, 2, 2, 479, 481,
+	9, 8, 2, 2, 480, 479, 3, 2, 2, 2, 480, 481, 3, 2, 2, 2, 481, 483, 3, 2,
+	2, 2, 482, 484, 9, 4, 2, 2, 483, 482, 3, 2, 2, 2, 484, 485, 3, 2, 2, 2,
+	485, 483, 3, 2, 2, 2, 485, 486, 3, 2, 2, 2, 486, 132, 3, 2, 2, 2, 487,
+	488, 9, 9, 2, 2, 488, 134, 3, 2, 2, 2, 489, 490, 7, 97, 2, 2, 490, 136,
+	3, 2, 2, 2, 491, 492, 4, 50, 59, 2, 492, 138, 3, 2, 2, 2, 493, 501, 7,
+	36, 2, 2, 494, 495, 7, 94, 2, 2, 495, 500, 11, 2, 2, 2, 496, 497, 7, 36,
+	2, 2, 497, 500, 7, 36, 2, 2, 498, 500, 10, 10, 2, 2, 499, 494, 3, 2, 2,
+	2, 499, 496, 3, 2, 2, 2, 499, 498, 3, 2, 2, 2, 500, 503, 3, 2, 2, 2, 501,
+	499, 3, 2, 2, 2, 501, 502, 3, 2, 2, 2, 502, 504, 3, 2, 2, 2, 503, 501,
+	3, 2, 2, 2, 504, 505, 7, 36, 2, 2, 505, 140, 3, 2, 2, 2, 506, 514, 7, 41,
+	2, 2, 507, 508, 7, 94, 2, 2, 508, 513, 11, 2, 2, 2, 509, 510, 7, 41, 2,
+	2, 510, 513, 7, 41, 2, 2, 511, 513, 10, 11, 2, 2, 512, 507, 3, 2, 2, 2,
+	512, 509, 3, 2, 2, 2, 512, 511, 3, 2, 2, 2, 513, 516, 3, 2, 2, 2, 514,
+	512, 3, 2, 2, 2, 514, 515, 3, 2, 2, 2, 515, 517, 3, 2, 2, 2, 516, 514,
+	3, 2, 2, 2, 517, 518, 7, 41, 2, 2, 518, 142, 3, 2, 2, 2, 519, 525, 7, 98,
+	2, 2, 520, 521, 7, 94, 2, 2, 521, 524, 7, 98, 2, 2, 522, 524, 10, 12, 2,
+	2, 523, 520, 3, 2, 2, 2, 523, 522, 3, 2, 2, 2, 524, 527, 3, 2, 2, 2, 525,
+	523, 3, 2, 2, 2, 525, 526, 3, 2, 2, 2, 526, 528, 3, 2, 2, 2, 527, 525,
+	3, 2, 2, 2, 528, 529, 7, 98, 2, 2, 529, 144, 3, 2, 2, 2, 530, 536, 7, 182,
+	2, 2, 531, 532, 7, 94, 2, 2, 532, 535, 7, 182, 2, 2, 533, 535, 10, 13,
+	2, 2, 534, 531, 3, 2, 2, 2, 534, 533, 3, 2, 2, 2, 535, 538, 3, 2, 2, 2,
+	536, 534, 3, 2, 2, 2, 536, 537, 3, 2, 2, 2, 537, 539, 3, 2, 2, 2, 538,
+	536, 3, 2, 2, 2, 539, 540, 7, 182, 2, 2, 540, 146, 3, 2, 2, 2, 541, 542,
+	7, 60, 2, 2, 542, 543, 7, 60, 2, 2, 543, 148, 3, 2, 2, 2, 34, 2, 155, 169,
+	177, 242, 248, 320, 350, 400, 410, 416, 421, 428, 433, 440, 445, 452, 455,
+	459, 461, 473, 476, 480, 485, 499, 501, 512, 514, 523, 525, 534, 536, 3,
+	2, 3, 2,
 }
 
 var lexerDeserializer = antlr.NewATNDeserializer(nil)
@@ -281,8 +289,7 @@ var lexerSymbolicNames = []string{
 	"For", "Return", "Distinct", "Filter", "Sort", "Limit", "Let", "Collect",
 	"SortDirection", "None", "Null", "BooleanLiteral", "Into", "Keep", "With",
 	"Count", "All", "Any", "Aggregate", "Like", "Not", "In", "Param", "Identifier",
-	"StringLiteral", "TemplateStringLiteral", "IntegerLiteral", "FloatLiteral",
-	"NamespaceSegment",
+	"StringLiteral", "IntegerLiteral", "FloatLiteral", "NamespaceSegment",
 }
 
 var lexerRuleNames = []string{
@@ -294,9 +301,9 @@ var lexerRuleNames = []string{
 	"For", "Return", "Distinct", "Filter", "Sort", "Limit", "Let", "Collect",
 	"SortDirection", "None", "Null", "BooleanLiteral", "Into", "Keep", "With",
 	"Count", "All", "Any", "Aggregate", "Like", "Not", "In", "Param", "Identifier",
-	"StringLiteral", "TemplateStringLiteral", "IntegerLiteral", "FloatLiteral",
-	"NamespaceSegment", "HexDigit", "DecimalIntegerLiteral", "ExponentPart",
-	"Letter", "Symbols", "Digit", "DQSring", "SQString", "NamespaceSeparator",
+	"StringLiteral", "IntegerLiteral", "FloatLiteral", "NamespaceSegment",
+	"HexDigit", "DecimalIntegerLiteral", "ExponentPart", "Letter", "Symbols",
+	"Digit", "DQSring", "SQString", "BacktickString", "TickString", "NamespaceSeparator",
 }
 
 type FqlLexer struct {
@@ -334,67 +341,66 @@ func NewFqlLexer(input antlr.CharStream) *FqlLexer {
 
 // FqlLexer tokens.
 const (
-	FqlLexerMultiLineComment      = 1
-	FqlLexerSingleLineComment     = 2
-	FqlLexerWhiteSpaces           = 3
-	FqlLexerLineTerminator        = 4
-	FqlLexerColon                 = 5
-	FqlLexerSemiColon             = 6
-	FqlLexerDot                   = 7
-	FqlLexerComma                 = 8
-	FqlLexerOpenBracket           = 9
-	FqlLexerCloseBracket          = 10
-	FqlLexerOpenParen             = 11
-	FqlLexerCloseParen            = 12
-	FqlLexerOpenBrace             = 13
-	FqlLexerCloseBrace            = 14
-	FqlLexerGt                    = 15
-	FqlLexerLt                    = 16
-	FqlLexerEq                    = 17
-	FqlLexerGte                   = 18
-	FqlLexerLte                   = 19
-	FqlLexerNeq                   = 20
-	FqlLexerMulti                 = 21
-	FqlLexerDiv                   = 22
-	FqlLexerMod                   = 23
-	FqlLexerPlus                  = 24
-	FqlLexerMinus                 = 25
-	FqlLexerMinusMinus            = 26
-	FqlLexerPlusPlus              = 27
-	FqlLexerAnd                   = 28
-	FqlLexerOr                    = 29
-	FqlLexerRange                 = 30
-	FqlLexerAssign                = 31
-	FqlLexerQuestionMark          = 32
-	FqlLexerRegexNotMatch         = 33
-	FqlLexerRegexMatch            = 34
-	FqlLexerFor                   = 35
-	FqlLexerReturn                = 36
-	FqlLexerDistinct              = 37
-	FqlLexerFilter                = 38
-	FqlLexerSort                  = 39
-	FqlLexerLimit                 = 40
-	FqlLexerLet                   = 41
-	FqlLexerCollect               = 42
-	FqlLexerSortDirection         = 43
-	FqlLexerNone                  = 44
-	FqlLexerNull                  = 45
-	FqlLexerBooleanLiteral        = 46
-	FqlLexerInto                  = 47
-	FqlLexerKeep                  = 48
-	FqlLexerWith                  = 49
-	FqlLexerCount                 = 50
-	FqlLexerAll                   = 51
-	FqlLexerAny                   = 52
-	FqlLexerAggregate             = 53
-	FqlLexerLike                  = 54
-	FqlLexerNot                   = 55
-	FqlLexerIn                    = 56
-	FqlLexerParam                 = 57
-	FqlLexerIdentifier            = 58
-	FqlLexerStringLiteral         = 59
-	FqlLexerTemplateStringLiteral = 60
-	FqlLexerIntegerLiteral        = 61
-	FqlLexerFloatLiteral          = 62
-	FqlLexerNamespaceSegment      = 63
+	FqlLexerMultiLineComment  = 1
+	FqlLexerSingleLineComment = 2
+	FqlLexerWhiteSpaces       = 3
+	FqlLexerLineTerminator    = 4
+	FqlLexerColon             = 5
+	FqlLexerSemiColon         = 6
+	FqlLexerDot               = 7
+	FqlLexerComma             = 8
+	FqlLexerOpenBracket       = 9
+	FqlLexerCloseBracket      = 10
+	FqlLexerOpenParen         = 11
+	FqlLexerCloseParen        = 12
+	FqlLexerOpenBrace         = 13
+	FqlLexerCloseBrace        = 14
+	FqlLexerGt                = 15
+	FqlLexerLt                = 16
+	FqlLexerEq                = 17
+	FqlLexerGte               = 18
+	FqlLexerLte               = 19
+	FqlLexerNeq               = 20
+	FqlLexerMulti             = 21
+	FqlLexerDiv               = 22
+	FqlLexerMod               = 23
+	FqlLexerPlus              = 24
+	FqlLexerMinus             = 25
+	FqlLexerMinusMinus        = 26
+	FqlLexerPlusPlus          = 27
+	FqlLexerAnd               = 28
+	FqlLexerOr                = 29
+	FqlLexerRange             = 30
+	FqlLexerAssign            = 31
+	FqlLexerQuestionMark      = 32
+	FqlLexerRegexNotMatch     = 33
+	FqlLexerRegexMatch        = 34
+	FqlLexerFor               = 35
+	FqlLexerReturn            = 36
+	FqlLexerDistinct          = 37
+	FqlLexerFilter            = 38
+	FqlLexerSort              = 39
+	FqlLexerLimit             = 40
+	FqlLexerLet               = 41
+	FqlLexerCollect           = 42
+	FqlLexerSortDirection     = 43
+	FqlLexerNone              = 44
+	FqlLexerNull              = 45
+	FqlLexerBooleanLiteral    = 46
+	FqlLexerInto              = 47
+	FqlLexerKeep              = 48
+	FqlLexerWith              = 49
+	FqlLexerCount             = 50
+	FqlLexerAll               = 51
+	FqlLexerAny               = 52
+	FqlLexerAggregate         = 53
+	FqlLexerLike              = 54
+	FqlLexerNot               = 55
+	FqlLexerIn                = 56
+	FqlLexerParam             = 57
+	FqlLexerIdentifier        = 58
+	FqlLexerStringLiteral     = 59
+	FqlLexerIntegerLiteral    = 60
+	FqlLexerFloatLiteral      = 61
+	FqlLexerNamespaceSegment  = 62
 )

pkg/parser/fql/fqlparser_base_listener.go

@@ -250,12 +250,6 @@ func (s *BaseFqlParserListener) EnterPropertyAssignment(ctx *PropertyAssignmentC
 // ExitPropertyAssignment is called when production propertyAssignment is exited.
 func (s *BaseFqlParserListener) ExitPropertyAssignment(ctx *PropertyAssignmentContext) {}
 
-// EnterMemberExpression is called when production memberExpression is entered.
-func (s *BaseFqlParserListener) EnterMemberExpression(ctx *MemberExpressionContext) {}
-
-// ExitMemberExpression is called when production memberExpression is exited.
-func (s *BaseFqlParserListener) ExitMemberExpression(ctx *MemberExpressionContext) {}
-
 // EnterShorthandPropertyName is called when production shorthandPropertyName is entered.
 func (s *BaseFqlParserListener) EnterShorthandPropertyName(ctx *ShorthandPropertyNameContext) {}
 
@@ -292,6 +286,24 @@ func (s *BaseFqlParserListener) EnterFunctionCallExpression(ctx *FunctionCallExp
 // ExitFunctionCallExpression is called when production functionCallExpression is exited.
 func (s *BaseFqlParserListener) ExitFunctionCallExpression(ctx *FunctionCallExpressionContext) {}
 
+// EnterMember is called when production member is entered.
+func (s *BaseFqlParserListener) EnterMember(ctx *MemberContext) {}
+
+// ExitMember is called when production member is exited.
+func (s *BaseFqlParserListener) ExitMember(ctx *MemberContext) {}
+
+// EnterMemberPath is called when production memberPath is entered.
+func (s *BaseFqlParserListener) EnterMemberPath(ctx *MemberPathContext) {}
+
+// ExitMemberPath is called when production memberPath is exited.
+func (s *BaseFqlParserListener) ExitMemberPath(ctx *MemberPathContext) {}
+
+// EnterMemberExpression is called when production memberExpression is entered.
+func (s *BaseFqlParserListener) EnterMemberExpression(ctx *MemberExpressionContext) {}
+
+// ExitMemberExpression is called when production memberExpression is exited.
+func (s *BaseFqlParserListener) ExitMemberExpression(ctx *MemberExpressionContext) {}
+
 // EnterArguments is called when production arguments is entered.
 func (s *BaseFqlParserListener) EnterArguments(ctx *ArgumentsContext) {}
 

pkg/parser/fql/fqlparser_base_visitor.go

@@ -159,10 +159,6 @@ func (v *BaseFqlParserVisitor) VisitPropertyAssignment(ctx *PropertyAssignmentCo
 	return v.VisitChildren(ctx)
 }
 
-func (v *BaseFqlParserVisitor) VisitMemberExpression(ctx *MemberExpressionContext) interface{} {
-	return v.VisitChildren(ctx)
-}
-
 func (v *BaseFqlParserVisitor) VisitShorthandPropertyName(ctx *ShorthandPropertyNameContext) interface{} {
 	return v.VisitChildren(ctx)
 }
@@ -187,6 +183,18 @@ func (v *BaseFqlParserVisitor) VisitFunctionCallExpression(ctx *FunctionCallExpr
 	return v.VisitChildren(ctx)
 }
 
+func (v *BaseFqlParserVisitor) VisitMember(ctx *MemberContext) interface{} {
+	return v.VisitChildren(ctx)
+}
+
+func (v *BaseFqlParserVisitor) VisitMemberPath(ctx *MemberPathContext) interface{} {
+	return v.VisitChildren(ctx)
+}
+
+func (v *BaseFqlParserVisitor) VisitMemberExpression(ctx *MemberExpressionContext) interface{} {
+	return v.VisitChildren(ctx)
+}
+
 func (v *BaseFqlParserVisitor) VisitArguments(ctx *ArgumentsContext) interface{} {
 	return v.VisitChildren(ctx)
 }

pkg/parser/fql/fqlparser_listener.go

@@ -121,9 +121,6 @@ type FqlParserListener interface {
 	// EnterPropertyAssignment is called when entering the propertyAssignment production.
 	EnterPropertyAssignment(c *PropertyAssignmentContext)
 
-	// EnterMemberExpression is called when entering the memberExpression production.
-	EnterMemberExpression(c *MemberExpressionContext)
-
 	// EnterShorthandPropertyName is called when entering the shorthandPropertyName production.
 	EnterShorthandPropertyName(c *ShorthandPropertyNameContext)
 
@@ -142,6 +139,15 @@ type FqlParserListener interface {
 	// EnterFunctionCallExpression is called when entering the functionCallExpression production.
 	EnterFunctionCallExpression(c *FunctionCallExpressionContext)
 
+	// EnterMember is called when entering the member production.
+	EnterMember(c *MemberContext)
+
+	// EnterMemberPath is called when entering the memberPath production.
+	EnterMemberPath(c *MemberPathContext)
+
+	// EnterMemberExpression is called when entering the memberExpression production.
+	EnterMemberExpression(c *MemberExpressionContext)
+
 	// EnterArguments is called when entering the arguments production.
 	EnterArguments(c *ArgumentsContext)
 
@@ -292,9 +298,6 @@ type FqlParserListener interface {
 	// ExitPropertyAssignment is called when exiting the propertyAssignment production.
 	ExitPropertyAssignment(c *PropertyAssignmentContext)
 
-	// ExitMemberExpression is called when exiting the memberExpression production.
-	ExitMemberExpression(c *MemberExpressionContext)
-
 	// ExitShorthandPropertyName is called when exiting the shorthandPropertyName production.
 	ExitShorthandPropertyName(c *ShorthandPropertyNameContext)
 
@@ -313,6 +316,15 @@ type FqlParserListener interface {
 	// ExitFunctionCallExpression is called when exiting the functionCallExpression production.
 	ExitFunctionCallExpression(c *FunctionCallExpressionContext)
 
+	// ExitMember is called when exiting the member production.
+	ExitMember(c *MemberContext)
+
+	// ExitMemberPath is called when exiting the memberPath production.
+	ExitMemberPath(c *MemberPathContext)
+
+	// ExitMemberExpression is called when exiting the memberExpression production.
+	ExitMemberExpression(c *MemberExpressionContext)
+
 	// ExitArguments is called when exiting the arguments production.
 	ExitArguments(c *ArgumentsContext)
 

pkg/parser/fql/fqlparser_visitor.go

@@ -121,9 +121,6 @@ type FqlParserVisitor interface {
 	// Visit a parse tree produced by FqlParser#propertyAssignment.
 	VisitPropertyAssignment(ctx *PropertyAssignmentContext) interface{}
 
-	// Visit a parse tree produced by FqlParser#memberExpression.
-	VisitMemberExpression(ctx *MemberExpressionContext) interface{}
-
 	// Visit a parse tree produced by FqlParser#shorthandPropertyName.
 	VisitShorthandPropertyName(ctx *ShorthandPropertyNameContext) interface{}
 
@@ -142,6 +139,15 @@ type FqlParserVisitor interface {
 	// Visit a parse tree produced by FqlParser#functionCallExpression.
 	VisitFunctionCallExpression(ctx *FunctionCallExpressionContext) interface{}
 
+	// Visit a parse tree produced by FqlParser#member.
+	VisitMember(ctx *MemberContext) interface{}
+
+	// Visit a parse tree produced by FqlParser#memberPath.
+	VisitMemberPath(ctx *MemberPathContext) interface{}
+
+	// Visit a parse tree produced by FqlParser#memberExpression.
+	VisitMemberExpression(ctx *MemberExpressionContext) interface{}
+
 	// Visit a parse tree produced by FqlParser#arguments.
 	VisitArguments(ctx *ArgumentsContext) interface{}
 

pkg/runtime/core/helpers.go

@@ -36,6 +36,14 @@ func NumberBoundaries(input float64) (max float64, min float64) {
 	return
 }
 
+func NumberUpperBoundary(input float64) float64 {
+	return input * 2
+}
+
+func NumberLowerBoundary(input float64) float64 {
+	return input / 2
+}
+
 func Random(max float64, min float64) float64 {
 	r := rand.Float64()
 	i := r * (max - min + 1)

pkg/runtime/expressions/member.go

@@ -8,25 +8,25 @@ import (
 )
 
 type MemberExpression struct {
-	src          core.SourceMap
-	variableName string
-	path         []core.Expression
+	src    core.SourceMap
+	source core.Expression
+	path   []core.Expression
 }
 
-func NewMemberExpression(src core.SourceMap, variableName string, path []core.Expression) (*MemberExpression, error) {
-	if variableName == "" {
-		return nil, core.Error(core.ErrMissedArgument, "variable name")
+func NewMemberExpression(src core.SourceMap, source core.Expression, path []core.Expression) (*MemberExpression, error) {
+	if source == nil {
+		return nil, core.Error(core.ErrMissedArgument, "source")
 	}
 
 	if len(path) == 0 {
 		return nil, core.Error(core.ErrMissedArgument, "path expressions")
 	}
 
-	return &MemberExpression{src, variableName, path}, nil
+	return &MemberExpression{src, source, path}, nil
 }
 
 func (e *MemberExpression) Exec(ctx context.Context, scope *core.Scope) (core.Value, error) {
-	val, err := scope.GetVariable(e.variableName)
+	val, err := e.source.Exec(ctx, scope)
 
 	if err != nil {
 		return values.None, core.SourceError(
@@ -35,22 +35,24 @@ func (e *MemberExpression) Exec(ctx context.Context, scope *core.Scope) (core.Va
 		)
 	}
 
-	strPath := make([]core.Value, len(e.path))
+	out := val
+	path := make([]core.Value, 1)
 
-	for idx, exp := range e.path {
+	for _, exp := range e.path {
 		segment, err := exp.Exec(ctx, scope)
 
 		if err != nil {
 			return values.None, err
 		}
 
-		strPath[idx] = segment
-	}
+		path[0] = segment
+		c, err := values.GetIn(ctx, out, path)
 
-	out, err := values.GetIn(ctx, val, strPath)
+		if err != nil {
+			return values.None, core.SourceError(e.src, err)
+		}
 
-	if err != nil {
-		return values.None, core.SourceError(e.src, err)
+		out = c
 	}
 
 	return out, nil

pkg/runtime/values/helpers.go

@@ -329,7 +329,7 @@ func ToInt(input core.Value) Int {
 	}
 }
 
-func ToArray(ctx context.Context, input core.Value) core.Value {
+func ToArray(ctx context.Context, input core.Value) *Array {
 	switch value := input.(type) {
 	case Boolean,
 		Int,
@@ -339,7 +339,7 @@ func ToArray(ctx context.Context, input core.Value) core.Value {
 
 		return NewArrayWith(value)
 	case *Array:
-		return value.Copy()
+		return value.Copy().(*Array)
 	case *Object:
 		arr := NewArray(int(value.Length()))
 
@@ -354,7 +354,7 @@ func ToArray(ctx context.Context, input core.Value) core.Value {
 		iterator, err := value.Iterate(ctx)
 
 		if err != nil {
-			return None
+			return NewArray(0)
 		}
 
 		arr := NewArray(10)
@@ -363,7 +363,7 @@ func ToArray(ctx context.Context, input core.Value) core.Value {
 			val, _, err := iterator.Next(ctx)
 
 			if err != nil {
-				return None
+				return NewArray(0)
 			}
 
 			if val == None {

pkg/runtime/values/helpers_test.go

@@ -390,9 +390,7 @@ func TestHelpers(t *testing.T) {
 				}
 
 				input := values.NewArrayWith(vals...)
-				output := values.ToArray(context.Background(), input)
-
-				arr := output.(*values.Array)
+				arr := values.ToArray(context.Background(), input)
 
 				So(input == arr, ShouldBeFalse)
 				So(arr.Length() == input.Length(), ShouldBeTrue)
@@ -414,9 +412,7 @@ func TestHelpers(t *testing.T) {
 					values.NewObjectProperty("qaz", values.NewObject()),
 				)
 
-				output := values.ToArray(context.Background(), input)
-
-				arr := output.(*values.Array).Sort()
+				arr := values.ToArray(context.Background(), input).Sort()
 
 				So(arr.String(), ShouldEqual, "[1,\"bar\",{}]")
 				So(arr.Get(values.NewInt(2)) == input.MustGet("qaz"), ShouldBeTrue)

pkg/runtime/values/none.go

@@ -40,3 +40,7 @@ func (t *none) Hash() uint64 {
 func (t *none) Copy() core.Value {
 	return None
 }
+
+func (t *none) Clone() core.Cloneable {
+	return None
+}

pkg/stdlib/html/attr_get.go

@@ -8,7 +8,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// AttributeGet gets single or more attribute(s) of a given element.
+// ATTR_GET gets single or more attribute(s) of a given element.
 // @param el (HTMLElement) - Target element.
 // @param names (...String) - Attribute name(s).
 // @returns Object - Key-value pairs of attribute values.
@@ -27,7 +27,11 @@ func AttributeGet(ctx context.Context, args ...core.Value) (core.Value, error) {
 
 	names := args[1:]
 	result := values.NewObject()
-	attrs := el.GetAttributes(ctx)
+	attrs, err := el.GetAttributes(ctx)
+
+	if err != nil {
+		return values.None, err
+	}
 
 	for _, n := range names {
 		name := values.NewString(n.String())

pkg/stdlib/html/attr_remove.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// AttributeRemove removes single or more attribute(s) of a given element.
+// ATTR_REMOVE removes single or more attribute(s) of a given element.
 // @param el (HTMLElement) - Target element.
 // @param names (...String) - Attribute name(s).
 func AttributeRemove(ctx context.Context, args ...core.Value) (core.Value, error) {

pkg/stdlib/html/attr_set.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// AttributeSet sets or updates a single or more attribute(s) of a given element.
+// ATTR_SET sets or updates a single or more attribute(s) of a given element.
 // @param el (HTMLElement) - Target element.
 // @param nameOrObj (String | Object) - Attribute name or an object representing a key-value pair of attributes.
 // @param value (String) - If a second parameter is a string value, this parameter represent an attribute value.

pkg/stdlib/html/blur.go

@@ -0,0 +1,32 @@
+package html
+
+import (
+	"context"
+	"github.com/MontFerret/ferret/pkg/drivers"
+	"github.com/MontFerret/ferret/pkg/runtime/values"
+
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+)
+
+// BLUR Calls blur on the element.
+// @param target (HTMLPage | HTMLDocument | HTMLElement) - Target node.
+// @param selector (String, optional) - Optional CSS selector.
+func Blur(ctx context.Context, args ...core.Value) (core.Value, error) {
+	err := core.ValidateArgs(args, 1, 2)
+
+	if err != nil {
+		return values.None, err
+	}
+
+	el, err := drivers.ToElement(args[0])
+
+	if err != nil {
+		return values.None, err
+	}
+
+	if len(args) == 1 {
+		return values.None, el.Blur(ctx)
+	}
+
+	return values.None, el.BlurBySelector(ctx, values.ToString(args[1]))
+}

pkg/stdlib/html/clear.go

@@ -0,0 +1,33 @@
+package html
+
+import (
+	"context"
+
+	"github.com/MontFerret/ferret/pkg/drivers"
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+	"github.com/MontFerret/ferret/pkg/runtime/values"
+)
+
+// INPUT_CLEAR clears a value from an underlying input element.
+// @param source (HTMLPage | HTMLDocument | HTMLElement) - Event target.
+// @param selector (String, options) - Selector.
+func InputClear(ctx context.Context, args ...core.Value) (core.Value, error) {
+	err := core.ValidateArgs(args, 1, 2)
+
+	if err != nil {
+		return values.None, err
+	}
+
+	el, err := drivers.ToElement(args[0])
+
+	if err != nil {
+		return values.None, err
+	}
+
+	// CLEAR(el)
+	if len(args) == 1 {
+		return values.None, el.Clear(ctx)
+	}
+
+	return values.None, el.ClearBySelector(ctx, values.ToString(args[1]))
+}

pkg/stdlib/html/click.go

@@ -6,13 +6,15 @@ import (
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
+	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Click dispatches click event on a given element
+// CLICK dispatches click event on a given element
 // @param source (Open | GetElement) - Event source.
-// @param selector (String, optional) - Optional selector.
+// @param selectorOrCount (String | Int, optional) - Optional selector or count of clicks.
+// @param count (Int, optional) - Optional count of clicks.
 func Click(ctx context.Context, args ...core.Value) (core.Value, error) {
-	err := core.ValidateArgs(args, 1, 2)
+	err := core.ValidateArgs(args, 1, 3)
 
 	if err != nil {
 		return values.False, err
@@ -26,7 +28,44 @@ func Click(ctx context.Context, args ...core.Value) (core.Value, error) {
 
 	// CLICK(elOrDoc)
 	if len(args) == 1 {
-		return values.True, el.Click(ctx)
+		return values.True, el.Click(ctx, 1)
+	}
+
+	if len(args) == 2 {
+		err := core.ValidateType(args[1], types.String, types.Int)
+
+		if err != nil {
+			return values.False, err
+		}
+
+		if args[1].Type() == types.String {
+			selector := values.ToString(args[1])
+			exists, err := el.ExistsBySelector(ctx, selector)
+
+			if err != nil {
+				return values.False, err
+			}
+
+			if !exists {
+				return exists, nil
+			}
+
+			return exists, el.ClickBySelector(ctx, selector, 1)
+		}
+
+		return values.True, el.Click(ctx, values.ToInt(args[1]))
+	}
+
+	err = core.ValidateType(args[1], types.String)
+
+	if err != nil {
+		return values.False, err
+	}
+
+	err = core.ValidateType(args[2], types.Int)
+
+	if err != nil {
+		return values.False, err
 	}
 
 	// CLICK(doc, selector)
@@ -41,5 +80,7 @@ func Click(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return exists, nil
 	}
 
-	return exists, el.ClickBySelector(ctx, selector)
+	count := values.ToInt(args[2])
+
+	return exists, el.ClickBySelector(ctx, selector, count)
 }

pkg/stdlib/html/click_all.go

@@ -6,14 +6,16 @@ import (
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
+	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// ClickAll dispatches click event on all matched element
+// CLICK_ALL dispatches click event on all matched element
 // @param source (Open) - Open.
 // @param selector (String) - Selector.
+// @param count (Int, optional) - Optional count of clicks.
 // @returns (Boolean) - Returns true if matched at least one element.
 func ClickAll(ctx context.Context, args ...core.Value) (core.Value, error) {
-	err := core.ValidateArgs(args, 2, 2)
+	err := core.ValidateArgs(args, 2, 3)
 
 	if err != nil {
 		return values.False, err
@@ -22,7 +24,7 @@ func ClickAll(ctx context.Context, args ...core.Value) (core.Value, error) {
 	el, err := drivers.ToElement(args[0])
 
 	if err != nil {
-		return values.None, err
+		return values.False, err
 	}
 
 	selector := values.ToString(args[1])
@@ -37,5 +39,17 @@ func ClickAll(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return values.False, nil
 	}
 
-	return values.True, el.ClickBySelectorAll(ctx, selector)
+	count := values.NewInt(1)
+
+	if len(args) == 3 {
+		err := core.ValidateType(args[2], types.Int)
+
+		if err != nil {
+			return values.False, err
+		}
+
+		count = values.ToInt(args[2])
+	}
+
+	return values.True, el.ClickBySelectorAll(ctx, selector, count)
 }

pkg/stdlib/html/cookie_del.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// CookieSet gets a cookie from a given page by name.
+// COOKIE_DEL gets a cookie from a given page by name.
 // @param page (HTMLPage) - Target page.
 // @param cookie (...HTTPCookie|String) - Cookie or cookie name to delete.
 func CookieDel(ctx context.Context, args ...core.Value) (core.Value, error) {

pkg/stdlib/html/cookie_get.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// CookieSet gets a cookie from a given page by name.
+// COOKIE_GET gets a cookie from a given page by name.
 // @param page (HTMLPage) - Target page.
 // @param name (String) - Cookie or cookie name to delete.
 func CookieGet(ctx context.Context, args ...core.Value) (core.Value, error) {

pkg/stdlib/html/cookie_set.go

@@ -8,7 +8,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// CookieSet sets cookies to a given page
+// COOKIE_SET sets cookies to a given page
 // @param page (HTMLPage) - Target page.
 // @param cookie... (HTTPCookie) - Target cookies.
 func CookieSet(ctx context.Context, args ...core.Value) (core.Value, error) {

pkg/stdlib/html/document.go

@@ -18,7 +18,7 @@ type PageLoadParams struct {
 	Timeout time.Duration
 }
 
-// Open opens an HTML page by a given url.
+// DOCUMENT opens an HTML page by a given url.
 // By default, loads a page by http call - resulted page does not support any interactions.
 // @param params (Object) - Optional, An object containing the following properties :
 // 		driver (String) - Optional, driver name.
@@ -26,7 +26,7 @@ type PageLoadParams struct {
 //      userAgent (String) - Optional, user agent.
 //      keepCookies (Boolean) - Optional, boolean value indicating whether to use cookies from previous sessions.
 //      	i.e. not to open a page in the Incognito mode.
-//      cookies (HTTPCookie) - Optional, set of HTTP cookies.
+//      cookies (HTTPCookies) - Optional, set of HTTP cookies.
 //      headers (HTTPHeaders) - Optional, HTTP headers.
 //      viewport (Viewport) - Optional, viewport params.
 // @returns (HTMLPage) - Returns loaded HTML page.
@@ -76,7 +76,7 @@ func newDefaultDocLoadParams(url values.String) PageLoadParams {
 		Params: drivers.Params{
 			URL: url.String(),
 		},
-		Timeout: time.Second * 30,
+		Timeout: drivers.DefaultPageLoadTimeout * time.Millisecond,
 	}
 }
 
@@ -134,17 +134,30 @@ func newPageLoadParams(url values.String, arg core.Value) (PageLoadParams, error
 		cookies, exists := obj.Get(values.NewString("cookies"))
 
 		if exists {
-			if err := core.ValidateType(cookies, types.Array); err != nil {
+			if err := core.ValidateType(cookies, types.Array, types.Object); err != nil {
 				return res, err
 			}
 
-			cookies, err := parseCookies(cookies.(*values.Array))
+			switch c := cookies.(type) {
+			case *values.Array:
+				cookies, err := parseCookieArray(c)
 
-			if err != nil {
-				return res, err
+				if err != nil {
+					return res, err
+				}
+
+				res.Cookies = cookies
+			case *values.Object:
+				cookies, err := parseCookieObject(c)
+
+				if err != nil {
+					return res, err
+				}
+
+				res.Cookies = cookies
+			default:
+				res.Cookies = make(drivers.HTTPCookies)
 			}
-
-			res.Cookies = cookies
 		}
 
 		headers, exists := obj.Get(values.NewString("headers"))
@@ -183,11 +196,11 @@ func newPageLoadParams(url values.String, arg core.Value) (PageLoadParams, error
 	return res, nil
 }
 
-func parseCookies(arr *values.Array) ([]drivers.HTTPCookie, error) {
+func parseCookieObject(obj *values.Object) (drivers.HTTPCookies, error) {
 	var err error
-	res := make([]drivers.HTTPCookie, 0, arr.Length())
+	res := make(drivers.HTTPCookies)
 
-	arr.ForEach(func(value core.Value, idx int) bool {
+	obj.ForEach(func(value core.Value, _ string) bool {
 		cookie, e := parseCookie(value)
 
 		if e != nil {
@@ -196,7 +209,28 @@ func parseCookies(arr *values.Array) ([]drivers.HTTPCookie, error) {
 			return false
 		}
 
-		res = append(res, cookie)
+		res[cookie.Name] = cookie
+
+		return true
+	})
+
+	return res, err
+}
+
+func parseCookieArray(arr *values.Array) (drivers.HTTPCookies, error) {
+	var err error
+	res := make(drivers.HTTPCookies)
+
+	arr.ForEach(func(value core.Value, _ int) bool {
+		cookie, e := parseCookie(value)
+
+		if e != nil {
+			err = e
+
+			return false
+		}
+
+		res[cookie.Name] = cookie
 
 		return true
 	})

pkg/stdlib/html/download.go

@@ -10,7 +10,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Download a resource from the given GetURL.
+// DOWNLOAD downloads a resource from the given GetURL.
 // @param GetURL (String) - GetURL to download.
 // @returns data (Binary) - Returns a base64 encoded string in binary format.
 func Download(_ context.Context, args ...core.Value) (core.Value, error) {

pkg/stdlib/html/element.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// GetElement finds an element by a given CSS selector.
+// ELEMENT finds an element by a given CSS selector.
 // Returns NONE if element not found.
 // @param docOrEl (HTMLDocument|HTMLElement) - Parent document or element.
 // @param selector (String) - CSS selector.
@@ -21,7 +21,7 @@ func Element(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	return el.QuerySelector(ctx, selector), nil
+	return el.QuerySelector(ctx, selector)
 }
 
 func queryArgs(args []core.Value) (drivers.HTMLElement, values.String, error) {

pkg/stdlib/html/element_exists.go

@@ -7,7 +7,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// ElementExists returns a boolean value indicating whether there is an element matched by selector.
+// ELEMENT_EXISTS returns a boolean value indicating whether there is an element matched by selector.
 // @param docOrEl (HTMLDocument|HTMLNode) - Parent document or element.
 // @param selector (String) - CSS selector.
 // @returns (Boolean) - A boolean value indicating whether there is an element matched by selector.

pkg/stdlib/html/elements.go

@@ -7,7 +7,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// Elements finds HTML elements by a given CSS selector.
+// ELEMENTS finds HTML elements by a given CSS selector.
 // Returns an empty array if element not found.
 // @param docOrEl (HTMLDocument|HTMLNode) - Parent document or element.
 // @param selector (String) - CSS selector.
@@ -19,5 +19,5 @@ func Elements(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	return el.QuerySelectorAll(ctx, selector), nil
+	return el.QuerySelectorAll(ctx, selector)
 }

pkg/stdlib/html/elements_count.go

@@ -7,7 +7,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// ElementsCount returns a number of found HTML elements by a given CSS selector.
+// ELEMENTS_COUNT returns a number of found HTML elements by a given CSS selector.
 // Returns an empty array if element not found.
 // @param docOrEl (HTMLDocument|HTMLNode) - Parent document or element.
 // @param selector (String) - CSS selector.
@@ -19,5 +19,5 @@ func ElementsCount(ctx context.Context, args ...core.Value) (core.Value, error)
 		return values.None, err
 	}
 
-	return el.CountBySelector(ctx, selector), nil
+	return el.CountBySelector(ctx, selector)
 }

pkg/stdlib/html/focus.go

@@ -2,14 +2,15 @@ package html
 
 import (
 	"context"
+
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// FOCUS Calls focus on the element.
+// FOCUS Sets focus on the element.
 // @param target (HTMLPage | HTMLDocument | HTMLElement) - Target node.
-// @param selector (String, optional) - Optional CSS selector. Required when target is HTMLPage or HTMLDocument.
+// @param selector (String, optional) - Optional CSS selector.
 func Focus(ctx context.Context, args ...core.Value) (core.Value, error) {
 	err := core.ValidateArgs(args, 1, 2)
 
@@ -17,22 +18,15 @@ func Focus(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	// Document with selector
-	if len(args) == 2 {
-		doc, err := drivers.ToDocument(args[0])
-
-		if err != nil {
-			return values.None, err
-		}
-
-		return values.None, doc.FocusBySelector(ctx, values.ToString(args[1]))
-	}
-
 	el, err := drivers.ToElement(args[0])
 
 	if err != nil {
 		return values.None, err
 	}
 
-	return values.None, el.Focus(ctx)
+	if len(args) == 1 {
+		return values.None, el.Focus(ctx)
+	}
+
+	return values.None, el.FocusBySelector(ctx, values.ToString(args[1]))
 }

pkg/stdlib/html/get_inner_html.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// GetInnerHTML Returns inner HTML string of a given or matched by CSS selector element
+// INNER_HTML returns inner HTML string of a given or matched by CSS selector element
 // @param doc (Open|GetElement) - Parent document or element.
 // @param selector (String, optional) - String of CSS selector.
 // @returns (String) - Inner HTML string if an element found, otherwise empty string.

pkg/stdlib/html/get_inner_html_all.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// GetInnerHTMLAll returns an array of inner HTML strings of matched elements.
+// INNER_HTML_ALL returns an array of inner HTML strings of matched elements.
 // @param doc (HTMLDocument|HTMLElement) - Parent document or element.
 // @param selector (String) - String of CSS selector.
 // @returns (String) - An array of inner HTML strings if any element found, otherwise empty array.

pkg/stdlib/html/get_inner_text.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// GetInnerText returns inner text string of a given or matched by CSS selector element
+// INNER_TEXT returns inner text string of a given or matched by CSS selector element
 // @param doc (HTMLDocument|HTMLElement) - Parent document or element.
 // @param selector (String, optional) - String of CSS selector.
 // @returns (String) - Inner text if an element found, otherwise empty string.

pkg/stdlib/html/get_inner_text_all.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// GetInnerTextAll returns an array of inner text of matched elements.
+// INNER_TEXT_ALL returns an array of inner text of matched elements.
 // @param doc (HTMLDocument|HTMLElement) - Parent document or element.
 // @param selector (String) - String of CSS selector.
 // @returns (String) - An array of inner text if any element found, otherwise empty array.

pkg/stdlib/html/hover.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Hover  fetches an element with selector, scrolls it into view if needed, and then uses page.mouse to hover over the center of the element.
+// HOVER fetches an element with selector, scrolls it into view if needed, and then uses page.mouse to hover over the center of the element.
 // If there's no element matching selector, the method returns an error.
 // @param docOrEl (HTMLDocument|HTMLElement) - Target document or element.
 // @param selector (String, options) - If document is passed, this param must represent an element selector.
@@ -20,59 +20,21 @@ func Hover(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	// page or document or element
-	err = core.ValidateType(args[0], drivers.HTMLPageType, drivers.HTMLDocumentType, drivers.HTMLElementType)
+	el, err := drivers.ToElement(args[0])
 
 	if err != nil {
 		return values.None, err
 	}
 
-	selector := values.EmptyString
-
-	if len(args) > 1 {
-		err = core.ValidateType(args[1], types.String)
-
-		if err != nil {
-			return values.None, err
-		}
-
-		selector = args[1].(values.String)
-	}
-
-	switch n := args[0].(type) {
-	case drivers.HTMLPage:
-		if selector == values.EmptyString {
-			return values.None, core.Error(core.ErrMissedArgument, "selector")
-		}
-
-		return values.None, n.GetMainFrame().MoveMouseBySelector(ctx, selector)
-	case drivers.HTMLDocument:
-		if selector == values.EmptyString {
-			return values.None, core.Error(core.ErrMissedArgument, "selector")
-		}
-
-		return values.None, n.MoveMouseBySelector(ctx, selector)
-	case drivers.HTMLElement:
-		if selector == values.EmptyString {
-			return values.None, n.Hover(ctx)
-		}
-
-		found := n.QuerySelector(ctx, selector)
-
-		if found == values.None {
-			return values.None, core.Errorf(core.ErrNotFound, "element by selector %s", selector)
-		}
-
-		el, ok := found.(drivers.HTMLElement)
-
-		if !ok {
-			return values.None, core.Errorf(core.ErrNotFound, "element by selector %s", selector)
-		}
-
-		defer el.Close()
-
+	if len(args) == 1 {
 		return values.None, el.Hover(ctx)
-	default:
-		return values.None, core.TypeError(n.Type(), drivers.HTMLDocumentType, drivers.HTMLElementType)
 	}
+
+	err = core.ValidateType(args[1], types.String)
+
+	if err != nil {
+		return values.None, err
+	}
+
+	return values.None, el.HoverBySelector(ctx, values.ToString(args[1]))
 }

pkg/stdlib/html/input.go

@@ -2,101 +2,83 @@ package html
 
 import (
 	"context"
-
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Input types a value to an underlying input element.
-// @param source (Open | GetElement) - Event target.
+// INPUT types a value to an underlying input element.
+// @param source (HTMLPage | HTMLDocument | HTMLElement) - Event target.
 // @param valueOrSelector (String) - Selector or a value.
 // @param value (String) - Target value.
-// @param delay (Int, optional) - Waits delay milliseconds between keystrokes
+// @param delay (Int, optional) - Target value.
 // @returns (Boolean) - Returns true if an element was found.
 func Input(ctx context.Context, args ...core.Value) (core.Value, error) {
 	err := core.ValidateArgs(args, 2, 4)
 
 	if err != nil {
-		return values.None, err
+		return values.False, err
 	}
 
-	arg1 := args[0]
-	err = core.ValidateType(arg1, drivers.HTMLPageType, drivers.HTMLDocumentType, drivers.HTMLElementType)
+	el, err := drivers.ToElement(args[0])
 
 	if err != nil {
 		return values.False, err
 	}
 
-	if arg1.Type() == drivers.HTMLPageType || arg1.Type() == drivers.HTMLDocumentType {
-		doc, err := drivers.ToDocument(arg1)
+	delay := values.NewInt(drivers.DefaultKeyboardDelay)
 
-		if err != nil {
-			return values.False, err
-		}
+	// INPUT(el, value)
+	if len(args) == 2 {
+		return values.True, el.Input(ctx, args[1], delay)
+	}
 
-		// selector
-		arg2 := args[1]
-		err = core.ValidateType(arg2, types.String)
+	var selector values.String
+	var value core.Value
 
-		if err != nil {
-			return values.False, err
-		}
+	// INPUT(el, valueOrSelector, valueOrOpts)
+	if len(args) == 3 {
+		switch v := args[2].(type) {
+		// INPUT(el, value, delay)
+		case values.Int, values.Float:
+			value = args[1]
+			delay = values.ToInt(v)
 
-		selector := values.ToString(arg2)
-		delay := values.Int(0)
-
-		if len(args) == 4 {
-			arg4 := args[3]
-
-			err = core.ValidateType(arg4, types.Int)
-
-			if err != nil {
+			return values.True, el.Input(ctx, value, delay)
+		default:
+			// INPUT(el, selector, value)
+			if err := core.ValidateType(args[1], types.String); err != nil {
 				return values.False, err
 			}
 
-			delay = values.ToInt(arg4)
+			selector = values.ToString(args[1])
+			value = args[2]
 		}
-
-		exists, err := doc.ExistsBySelector(ctx, selector)
-
-		if err != nil {
+	} else {
+		// INPUT(el, selector, value, delay)
+		if err := core.ValidateType(args[1], types.String); err != nil {
 			return values.False, err
 		}
 
-		if !exists {
-			return values.False, nil
-		}
-
-		return values.True, doc.InputBySelector(ctx, selector, args[2], delay)
-	}
-
-	el, err := drivers.ToElement(arg1)
-
-	if err != nil {
-		return values.None, err
-	}
-
-	delay := values.Int(0)
-
-	if len(args) == 3 {
-		arg3 := args[2]
-
-		err = core.ValidateType(arg3, types.Int)
-
-		if err != nil {
+		if err := core.ValidateType(args[3], types.Int); err != nil {
 			return values.False, err
 		}
 
-		delay = arg3.(values.Int)
+		selector = values.ToString(args[1])
+		value = args[2]
+		delay = values.ToInt(args[3])
 	}
 
-	err = el.Input(ctx, args[1], delay)
+	exists, err := el.ExistsBySelector(ctx, selector)
 
 	if err != nil {
 		return values.False, err
 	}
 
-	return values.True, nil
+	if !exists {
+		return values.False, nil
+	}
+
+	return values.True, el.InputBySelector(ctx, selector, value, delay)
 }

pkg/stdlib/html/lib.go

@@ -10,13 +10,12 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-const defaultTimeout = 5000
-
 func RegisterLib(ns core.Namespace) error {
 	return ns.RegisterFunctions(core.Functions{
 		"ATTR_GET":          AttributeGet,
 		"ATTR_REMOVE":       AttributeRemove,
 		"ATTR_SET":          AttributeSet,
+		"BLUR":              Blur,
 		"COOKIE_DEL":        CookieDel,
 		"COOKIE_GET":        CookieGet,
 		"COOKIE_SET":        CookieSet,
@@ -37,6 +36,7 @@ func RegisterLib(ns core.Namespace) error {
 		"INNER_TEXT_SET":    SetInnerText,
 		"INNER_TEXT_ALL":    GetInnerTextAll,
 		"INPUT":             Input,
+		"INPUT_CLEAR":       InputClear,
 		"MOUSE":             MouseMoveXY,
 		"NAVIGATE":          Navigate,
 		"NAVIGATE_BACK":     NavigateBack,
@@ -73,6 +73,7 @@ func RegisterLib(ns core.Namespace) error {
 
 func OpenOrCastPage(ctx context.Context, value core.Value) (drivers.HTMLPage, bool, error) {
 	err := core.ValidateType(value, drivers.HTMLPageType, types.String)
+
 	if err != nil {
 		return nil, false, err
 	}

pkg/stdlib/html/mouse_xy.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// MouseMoveXY moves mouse by given coordinates.
+// MOUSE moves mouse by given coordinates.
 // @param doc (HTMLDocument) - HTML document.
 // @param x (Int|Float) - X coordinate.
 // @param y (Int|Float) - Y coordinate.

pkg/stdlib/html/navigate.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Navigate navigates a given page to a new resource.
+// NAVIGATE navigates a given page to a new resource.
 // The operation blocks the execution until the page gets loaded.
 // Which means there is no need in WAIT_NAVIGATION function.
 // @param page (HTMLPage) - Target page.
@@ -34,7 +34,7 @@ func Navigate(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) > 2 {
 		err = core.ValidateType(args[2], types.Int)

pkg/stdlib/html/navigate_back.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// NavigateBack navigates a given page back within its navigation history.
+// NAVIGATE_BACK navigates a given page back within its navigation history.
 // The operation blocks the execution until the page gets loaded.
 // If the history is empty, the function returns FALSE.
 // @param page (HTMLPage) - Target page.
@@ -30,7 +30,7 @@ func NavigateBack(ctx context.Context, args ...core.Value) (core.Value, error) {
 	}
 
 	skip := values.NewInt(1)
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) > 1 {
 		err = core.ValidateType(args[1], types.Int)

pkg/stdlib/html/navigate_forward.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// NavigateForward navigates a given page forward within its navigation history.
+// NAVIGATE_FORWARD navigates a given page forward within its navigation history.
 // The operation blocks the execution until the page gets loaded.
 // If the history is empty, the function returns FALSE.
 // @param page (HTMLPage) - Target page.
@@ -30,7 +30,7 @@ func NavigateForward(ctx context.Context, args ...core.Value) (core.Value, error
 	}
 
 	skip := values.NewInt(1)
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) > 1 {
 		err = core.ValidateType(args[1], types.Int)

pkg/stdlib/html/pagination.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Pagination creates an iterator that goes through pages using CSS selector.
+// PAGINATION creates an iterator that goes through pages using CSS selector.
 // The iterator starts from the current page i.e. it does not change the page on 1st iteration.
 // That allows you to keep scraping logic inside FOR loop.
 // @param doc (Open) - Target document.
@@ -102,7 +102,7 @@ func (i *PagingIterator) Next(ctx context.Context) (core.Value, core.Value, erro
 		return values.None, values.None, core.ErrNoMoreData
 	}
 
-	err = i.document.ClickBySelector(ctx, i.selector)
+	err = i.document.GetElement().ClickBySelector(ctx, i.selector, 1)
 
 	if err != nil {
 		return values.None, values.None, err

pkg/stdlib/html/pdf.go

@@ -21,7 +21,7 @@ func ValidatePageRanges(pageRanges string) (bool, error) {
 	return match, nil
 }
 
-// PDF print a PDF of the current page.
+// PDF prints a PDF of the current page.
 // @param target (HTMLPage|String) - Target page or url.
 // @param params (Object) - Optional, An object containing the following properties :
 //   Landscape (Bool) - Paper orientation. Defaults to false.

pkg/stdlib/html/screenshot.go

@@ -10,7 +10,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Screenshot takes a screenshot of a given page.
+// SCREENSHOT takes a screenshot of a given page.
 // @param target (HTMLPage|String) - Target page or url.
 // @param params (Object) - Optional, An object containing the following properties :
 // 		x (Float|Int) - Optional, X position of the viewport.

pkg/stdlib/html/scroll_bottom.go

@@ -8,7 +8,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// ScrollTop scrolls the document's window to its bottom.
+// SCROLL_BOTTOM scrolls the document's window to its bottom.
 // @param doc (HTMLDocument) - Target document.
 func ScrollBottom(ctx context.Context, args ...core.Value) (core.Value, error) {
 	err := core.ValidateArgs(args, 1, 1)

pkg/stdlib/html/scroll_element.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// ScrollInto scrolls an element on.
+// SCROLL_ELEMENT scrolls an element on.
 // @param docOrEl (HTMLDocument|HTMLElement) - Target document or element.
 // @param selector (String, options) - If document is passed, this param must represent an element selector.
 func ScrollInto(ctx context.Context, args ...core.Value) (core.Value, error) {

pkg/stdlib/html/scroll_top.go

@@ -8,7 +8,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// ScrollTop scrolls the document's window to its top.
+// SCROLL_TOP scrolls the document's window to its top.
 // @param doc (HTMLDocument) - Target document.
 func ScrollTop(ctx context.Context, args ...core.Value) (core.Value, error) {
 	err := core.ValidateArgs(args, 1, 1)

pkg/stdlib/html/scroll_xy.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// ScrollXY scrolls by given coordinates.
+// SCROLL scrolls by given coordinates.
 // @param doc (HTMLDocument) - HTML document.
 // @param x (Int|Float) - X coordinate.
 // @param y (Int|Float) - Y coordinate.

pkg/stdlib/html/select.go

@@ -6,10 +6,9 @@ import (
 	"github.com/MontFerret/ferret/pkg/drivers"
 	"github.com/MontFerret/ferret/pkg/runtime/core"
 	"github.com/MontFerret/ferret/pkg/runtime/values"
-	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// Select selects a value from an underlying select element.
+// SELECT selects a value from an underlying select element.
 // @param source (Open | GetElement) - Event target.
 // @param valueOrSelector (String | Array<String>) - Selector or a an array of strings as a value.
 // @param value (Array<String) - Target value. Optional.
@@ -21,46 +20,20 @@ func Select(ctx context.Context, args ...core.Value) (core.Value, error) {
 		return values.None, err
 	}
 
-	arg1 := args[0]
-	err = core.ValidateType(arg1, drivers.HTMLPageType, drivers.HTMLDocumentType, drivers.HTMLElementType)
+	el, err := drivers.ToElement(args[0])
 
 	if err != nil {
-		return values.False, err
+		return values.None, err
 	}
 
-	if arg1.Type() == drivers.HTMLPageType || arg1.Type() == drivers.HTMLDocumentType {
-		doc, err := drivers.ToDocument(arg1)
+	if len(args) == 2 {
+		arr := values.ToArray(ctx, args[1])
 
-		if err != nil {
-			return values.None, err
-		}
-
-		// selector
-		arg2 := args[1]
-		err = core.ValidateType(arg2, types.String)
-
-		if err != nil {
-			return values.False, err
-		}
-
-		arg3 := args[2]
-		err = core.ValidateType(arg3, types.Array)
-
-		if err != nil {
-			return values.False, err
-		}
-
-		return doc.SelectBySelector(ctx, arg2.(values.String), arg3.(*values.Array))
+		return el.Select(ctx, arr)
 	}
 
-	el := arg1.(drivers.HTMLElement)
-	arg2 := args[1]
+	selector := values.ToString(args[1])
+	arr := values.ToArray(ctx, args[2])
 
-	err = core.ValidateType(arg2, types.Array)
-
-	if err != nil {
-		return values.False, err
-	}
-
-	return el.Select(ctx, arg2.(*values.Array))
+	return el.SelectBySelector(ctx, selector, arr)
 }

pkg/stdlib/html/set_inner_html.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// SetInnerHTML sets inner HTML string to a given or matched by CSS selector element
+// INNER_HTML_SET sets inner HTML string to a given or matched by CSS selector element
 // @param doc (Open|GetElement) - Parent document or element.
 // @param selector (String, optional) - String of CSS selector.
 // @param innerHTML (String) - String of inner HTML.

pkg/stdlib/html/set_inner_text.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// SetInnerText sets inner text string to a given or matched by CSS selector element
+// INNER_TEXT_SET sets inner text string to a given or matched by CSS selector element
 // @param doc (Open|GetElement) - Parent document or element.
 // @param selector (String, optional) - String of CSS selector.
 // @param innerText (String) - String of inner text.

pkg/stdlib/html/style_get.go

@@ -8,7 +8,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values"
 )
 
-// StyleGet gets single or more style attribute value(s) of a given element.
+// STYLE_GET gets single or more style attribute value(s) of a given element.
 // @param el (HTMLElement) - Target element.
 // @param names (...String) - Style name(s).
 // @returns Object - Key-value pairs of style values.

pkg/stdlib/html/style_remove.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// StyleRemove removes single or more style attribute value(s) of a given element.
+// STYLE_REMOVE removes single or more style attribute value(s) of a given element.
 // @param el (HTMLElement) - Target element.
 // @param names (...String) - Style name(s).
 func StyleRemove(ctx context.Context, args ...core.Value) (core.Value, error) {

pkg/stdlib/html/style_set.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// StyleSet sets or updates a single or more style attribute value of a given element.
+// STYLE_SET sets or updates a single or more style attribute value of a given element.
 // @param el (HTMLElement) - Target element.
 // @param nameOrObj (String | Object) - Style name or an object representing a key-value pair of attributes.
 // @param value (String) - If a second parameter is a string value, this parameter represent a style value.

pkg/stdlib/html/wait_attr.go

@@ -9,10 +9,22 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
+// WAIT_ATTR waits until a target attribute's value appears
+// @param node (HTMLPage | HTMLDocument | HTMLElement) - Parent document.
+// @param attrNameOrSelector (String) - String of an attr name or CSS selector.
+// @param attrValueOrAttrName (String | Any) - Attr value or name.
+// @param attrValueOrTimeout (Any | Int, optional) - Attr value or an optional timeout.
+// @param timeout (Int, optional) - Optional timeout.
 func WaitAttribute(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitAttributeWhen(ctx, args, drivers.WaitEventPresence)
 }
 
+// WAIT_NO_ATTR waits until a target attribute's value disappears
+// @param node (HTMLPage | HTMLDocument | HTMLElement) - Parent document.
+// @param attrNameOrSelector (String) - String of an attr name or CSS selector.
+// @param attrValueOrAttrName (String | Any) - Attr value or name.
+// @param attrValueOrTimeout (Any | Int, optional) - Attr value or an optional timeout.
+// @param timeout (Int, optional) - Optional timeout.
 func WaitNoAttribute(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitAttributeWhen(ctx, args, drivers.WaitEventAbsence)
 }
@@ -39,7 +51,7 @@ func waitAttributeWhen(ctx context.Context, args []core.Value, when drivers.Wait
 		return values.None, err
 	}
 
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	// if a document is passed
 	// WAIT_ATTR(doc, selector, attrName, attrValue, timeout)

pkg/stdlib/html/wait_attr_all.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// WaitClassAll waits for a class to appear on all matched elements.
+// WAIT_ATTR_ALL waits for an attribute to appear on all matched elements with a given value.
 // Stops the execution until the navigation ends or operation times out.
 // @param doc (HTMLDocument) - Parent document.
 // @param selector (String) - String of CSS selector.
@@ -19,7 +19,7 @@ func WaitAttributeAll(ctx context.Context, args ...core.Value) (core.Value, erro
 	return waitAttributeAllWhen(ctx, args, drivers.WaitEventPresence)
 }
 
-// WaitClassAll waits for a class to disappear on all matched elements.
+// WAIT_NO_ATTR_ALL waits for an attribute to disappear on all matched elements by a given value.
 // Stops the execution until the navigation ends or operation times out.
 // @param doc (HTMLDocument) - Parent document.
 // @param selector (String) - String of CSS selector.
@@ -59,7 +59,7 @@ func waitAttributeAllWhen(ctx context.Context, args []core.Value, when drivers.W
 	selector := args[1].(values.String)
 	name := args[2].(values.String)
 	value := args[3]
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) == 5 {
 		err = core.ValidateType(args[4], types.Int)

pkg/stdlib/html/wait_class.go

@@ -9,9 +9,9 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// WaitClass waits for a class to appear on a given element.
+// WAIT_CLASS waits for a class to appear on a given element.
 // Stops the execution until the navigation ends or operation times out.
-// @param docOrEl (HTMLDocument|HTMLElement) - Target document or element.
+// @param node (HTMLPage | HTMLDocument | HTMLElement) - Target node.
 // @param selectorOrClass (String) - If document is passed, this param must represent an element selector.
 // Otherwise target class.
 // @param classOrTimeout (String|Int, optional) - If document is passed, this param must represent target class name.
@@ -22,9 +22,9 @@ func WaitClass(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitClassWhen(ctx, args, drivers.WaitEventPresence)
 }
 
-// WaitClass waits for a class to disappear on a given element.
+// WAIT_NO_CLASS waits for a class to disappear on a given element.
 // Stops the execution until the navigation ends or operation times out.
-// @param docOrEl (HTMLDocument|HTMLElement) - Target document or element.
+// @param node (HTMLPage | HTMLDocument | HTMLElement) - Target node.
 // @param selectorOrClass (String) - If document is passed, this param must represent an element selector.
 // Otherwise target class.
 // @param classOrTimeout (String|Int, optional) - If document is passed, this param must represent target class name.
@@ -57,7 +57,7 @@ func waitClassWhen(ctx context.Context, args []core.Value, when drivers.WaitEven
 		return values.None, err
 	}
 
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	// if a document is passed
 	if arg1.Type() == drivers.HTMLPageType || arg1.Type() == drivers.HTMLDocumentType {

pkg/stdlib/html/wait_class_all.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// WaitClassAll waits for a class to appear on all matched elements.
+// WAIT_CLASS_ALL waits for a class to appear on all matched elements.
 // Stops the execution until the navigation ends or operation times out.
 // @param doc (HTMLDocument) - Parent document.
 // @param selector (String) - String of CSS selector.
@@ -19,7 +19,7 @@ func WaitClassAll(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitClassAllWhen(ctx, args, drivers.WaitEventPresence)
 }
 
-// WaitClassAll waits for a class to disappear on all matched elements.
+// WAIT_NO_CLASS_ALL waits for a class to disappear on all matched elements.
 // Stops the execution until the navigation ends or operation times out.
 // @param doc (HTMLDocument) - Parent document.
 // @param selector (String) - String of CSS selector.
@@ -58,7 +58,7 @@ func waitClassAllWhen(ctx context.Context, args []core.Value, when drivers.WaitE
 
 	selector := args[1].(values.String)
 	class := args[2].(values.String)
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) == 4 {
 		err = core.ValidateType(args[3], types.Int)

pkg/stdlib/html/wait_element.go

@@ -9,16 +9,16 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// WaitElement waits for element to appear in the DOM.
+// WAIT_ELEMENT waits for element to appear in the DOM.
 // Stops the execution until it finds an element or operation times out.
-// @param doc (HTMLDocument) - Driver HTMLDocument.
+// @param n (HTMLDocument) - Driver HTMLDocument.
 // @param selector (String) - Target element's selector.
 // @param timeout (Int, optional) - Optional timeout. Default 5000 ms.
 func WaitElement(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitElementWhen(ctx, args, drivers.WaitEventPresence)
 }
 
-// WaitNoElements waits for element to disappear in the DOM.
+// WAIT_NO_ELEMENT waits for element to disappear in the DOM.
 // Stops the execution until it does not find an element or operation times out.
 // @param doc (HTMLDocument) - Driver HTMLDocument.
 // @param selector (String) - Target element's selector.
@@ -41,7 +41,7 @@ func waitElementWhen(ctx context.Context, args []core.Value, when drivers.WaitEv
 	}
 
 	selector := args[1].String()
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) > 2 {
 		err = core.ValidateType(args[2], types.Int)

pkg/stdlib/html/wait_navigation.go

@@ -9,7 +9,7 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
-// WaitNavigation waits for a given page to navigate to a new url.
+// WAIT_NAVIGATION waits for a given page to navigate to a new url.
 // Stops the execution until the navigation ends or operation times out.
 // @param page (HTMLPage) - Target page.
 // @param timeout (Int, optional) - Optional timeout. Default 5000 ms.
@@ -26,7 +26,7 @@ func WaitNavigation(ctx context.Context, args ...core.Value) (core.Value, error)
 		return values.None, err
 	}
 
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) > 1 {
 		err = core.ValidateType(args[1], types.Int)

pkg/stdlib/html/wait_style.go

@@ -9,10 +9,12 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
+// WAIT_STYLE
 func WaitStyle(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitStyleWhen(ctx, args, drivers.WaitEventPresence)
 }
 
+// WAIT_NO_STYLE
 func WaitNoStyle(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitStyleWhen(ctx, args, drivers.WaitEventAbsence)
 }
@@ -39,7 +41,7 @@ func waitStyleWhen(ctx context.Context, args []core.Value, when drivers.WaitEven
 		return values.None, err
 	}
 
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	// if a document is passed
 	// WAIT_ATTR(doc, selector, attrName, attrValue, timeout)

pkg/stdlib/html/wait_style_all.go

@@ -9,10 +9,12 @@ import (
 	"github.com/MontFerret/ferret/pkg/runtime/values/types"
 )
 
+// WAIT_STYLE_ALL
 func WaitStyleAll(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitStyleAllWhen(ctx, args, drivers.WaitEventPresence)
 }
 
+// WAIT_NO_STYLE_ALL
 func WaitNoStyleAll(ctx context.Context, args ...core.Value) (core.Value, error) {
 	return waitStyleAllWhen(ctx, args, drivers.WaitEventAbsence)
 }
@@ -47,7 +49,7 @@ func waitStyleAllWhen(ctx context.Context, args []core.Value, when drivers.WaitE
 	selector := args[1].(values.String)
 	name := args[2].(values.String)
 	value := args[3]
-	timeout := values.NewInt(defaultTimeout)
+	timeout := values.NewInt(drivers.DefaultWaitTimeout)
 
 	if len(args) == 5 {
 		err = core.ValidateType(args[4], types.Int)