99 lines
2.3 KiB
Go
99 lines
2.3 KiB
Go
package otto
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import (
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"fmt"
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)
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// RegExp
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func builtinRegExp(call FunctionCall) Value {
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pattern := call.Argument(0)
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flags := call.Argument(1)
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if object := pattern._object(); object != nil {
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if object.class == classRegExp && flags.IsUndefined() {
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return pattern
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}
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}
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return toValue_object(call.runtime.newRegExp(pattern, flags))
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}
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func builtinNewRegExp(self *_object, argumentList []Value) Value {
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return toValue_object(self.runtime.newRegExp(
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valueOfArrayIndex(argumentList, 0),
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valueOfArrayIndex(argumentList, 1),
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))
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}
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func builtinRegExp_toString(call FunctionCall) Value {
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thisObject := call.thisObject()
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source := thisObject.get("source").string()
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flags := []byte{}
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if thisObject.get("global").bool() {
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flags = append(flags, 'g')
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}
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if thisObject.get("ignoreCase").bool() {
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flags = append(flags, 'i')
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}
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if thisObject.get("multiline").bool() {
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flags = append(flags, 'm')
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}
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return toValue_string(fmt.Sprintf("/%s/%s", source, flags))
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}
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func builtinRegExp_exec(call FunctionCall) Value {
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thisObject := call.thisObject()
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target := call.Argument(0).string()
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match, result := execRegExp(thisObject, target)
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if !match {
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return nullValue
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}
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return toValue_object(execResultToArray(call.runtime, target, result))
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}
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func builtinRegExp_test(call FunctionCall) Value {
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thisObject := call.thisObject()
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target := call.Argument(0).string()
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match, result := execRegExp(thisObject, target)
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if !match {
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return toValue_bool(match)
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}
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// Match extract and assign input, $_ and $1 -> $9 on global RegExp.
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input := toValue_string(target)
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call.runtime.global.RegExp.defineProperty("$_", input, 0100, false)
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call.runtime.global.RegExp.defineProperty("input", input, 0100, false)
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var start int
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n := 1
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re := call.runtime.global.RegExp
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for i, v := range result[2:] {
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if i%2 == 0 {
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start = v
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} else {
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re.defineProperty(fmt.Sprintf("$%d", n), toValue_string(target[start:v]), 0100, false)
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n++
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if n == 10 {
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break
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}
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}
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}
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if n <= 9 {
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// Erase remaining.
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empty := toValue_string("")
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for i := n; i <= 9; i++ {
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re.defineProperty(fmt.Sprintf("$%d", i), empty, 0100, false)
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}
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}
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return toValue_bool(match)
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}
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func builtinRegExp_compile(call FunctionCall) Value {
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// This (useless) function is deprecated, but is here to provide some
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// semblance of compatibility.
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// Caveat emptor: it may not be around for long.
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return Value{}
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}
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