stdlib.strings

Added string functions to standard library

pkg/stdlib/strings/json.go

@@ -0,0 +1,52 @@
+package strings
+
+import (
+	"context"
+	"encoding/json"
+	"github.com/MontFerret/ferret/pkg/runtime/core"
+	"github.com/MontFerret/ferret/pkg/runtime/values"
+)
+
+/*
+ * Returns a FQL value described by the JSON-encoded input string.
+ * @params text (String) - The string to parse as JSON.
+ * @returns FQL value (Value)
+ */
+func JsonParse(_ context.Context, args ...core.Value) (core.Value, error) {
+	err := core.ValidateArgs(args, 1, 1)
+
+	if err != nil {
+		return values.EmptyString, err
+	}
+
+	var val interface{}
+
+	err = json.Unmarshal([]byte(args[0].String()), &val)
+
+	if err != nil {
+		return values.EmptyString, err
+	}
+
+	return values.Parse(val), nil
+}
+
+/*
+ * Returns a JSON string representation of the input value.
+ * @params value (Value) - The input value to serialize.
+ * @returns json (String)
+ */
+func JsonStringify(_ context.Context, args ...core.Value) (core.Value, error) {
+	err := core.ValidateArgs(args, 1, 1)
+
+	if err != nil {
+		return values.EmptyString, err
+	}
+
+	out, err := json.Marshal(args[0])
+
+	if err != nil {
+		return values.EmptyString, err
+	}
+
+	return values.NewString(string(out)), nil
+}