public static EcmaValue RegExp([NewTarget] RuntimeObject newTarget, [This] EcmaValue thisValue, EcmaValue pattern, EcmaValue flags)
{
bool patternIsRegExp = pattern.IsRegExp;
if (newTarget == null && patternIsRegExp && flags == default)
{
EcmaValue constructor = pattern[WellKnownProperty.Constructor];
if (constructor.Type == EcmaValueType.Object && constructor.ToObject().IsWellknownObject(WellKnownObject.RegExpConstructor))
{
return(pattern);
}
}
string strPattern;
string strFlags;
if (pattern.Type == EcmaValueType.Object && pattern.ToObject() is EcmaRegExp other)
{
strPattern = other.Source;
strFlags = flags == default ? (string)RegExpPrototype.Flags(other) : flags.ToStringOrThrow();
}
else if (patternIsRegExp)
{
strPattern = pattern[WellKnownProperty.Source].ToStringOrThrow();
strFlags = flags == default ? pattern[WellKnownProperty.Flags].ToStringOrThrow() : flags.ToStringOrThrow();
}
else
{
strPattern = pattern == default ? "" : pattern.ToStringOrThrow();
strFlags = flags == default ? "" : flags.ToStringOrThrow();
}
EcmaRegExp re = EcmaRegExp.Parse(strPattern, strFlags);
if (newTarget == null)
{
return(re.Clone());
}
thisValue.GetUnderlyingObject <EcmaRegExp>().Init(re);
return(thisValue);
}
public static EcmaValue ToString([This] EcmaValue thisValue)
{
EcmaRegExp re = thisValue.GetUnderlyingObject <EcmaRegExp>();
return(String.Concat("/", re.Source, "/", re.Flags));
}
public static EcmaValue Exec([This] EcmaValue thisValue, EcmaValue input)
{
EcmaRegExp re = thisValue.GetUnderlyingObject <EcmaRegExp>();
return(re.Test(input.ToStringOrThrow()) ? re.LastResult.ToValue() : EcmaValue.Null);
}
protected virtual void WriteRegExp(EcmaRegExp re)
{
WriteToken(InspectorTokenType.RegExp, re.ToString());
}
