mirror of
https://github.com/MontFerret/ferret.git
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5620be211c
* Renamed DOCUMENT to PAGE * Added PageLoadParams * Added PageLoadParams * Renamed LoadPageParams -> PageLoadParams * Added support for context.Done() (#201) * Bug/#189 operators precedence (#202) * Fixed math operators precedence * Fixed logical operators precedence * Fixed array operator * Added support for parentheses to enforce a different operator evaluation order * Feature/#200 drivers (#209) * Added new interfaces * Renamed dynamic to cdp driver * Renamed drivers * Added ELEMENT_EXISTS function (#210) * Renamed back PAGE to DOCUMENT (#211) * Added Getter and Setter interfaces
61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package expressions
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import (
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"context"
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"github.com/MontFerret/ferret/pkg/runtime/collections"
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"github.com/MontFerret/ferret/pkg/runtime/core"
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"github.com/MontFerret/ferret/pkg/runtime/values"
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)
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type BlockExpression struct {
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values collections.Iterable
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statements []core.Expression
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}
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func NewBlockExpression(values collections.Iterable) (*BlockExpression, error) {
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if values == nil {
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return nil, core.Error(core.ErrMissedArgument, "values")
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}
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return &BlockExpression{
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values: values,
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statements: make([]core.Expression, 0, 5),
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}, nil
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}
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func (exp *BlockExpression) Add(stmt core.Expression) {
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exp.statements = append(exp.statements, stmt)
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}
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func (exp *BlockExpression) Exec(ctx context.Context, scope *core.Scope) (core.Value, error) {
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select {
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case <-ctx.Done():
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return values.None, core.ErrTerminated
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default:
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for _, stmt := range exp.statements {
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_, err := stmt.Exec(ctx, scope)
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if err != nil {
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return values.None, err
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}
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}
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return values.None, nil
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}
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}
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func (exp *BlockExpression) Iterate(ctx context.Context, scope *core.Scope) (collections.Iterator, error) {
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select {
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case <-ctx.Done():
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return nil, core.ErrTerminated
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default:
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iter, err := exp.values.Iterate(ctx, scope)
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if err != nil {
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return nil, err
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}
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return collections.NewTapIterator(iter, exp)
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}
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}
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