public Node parseFunctionDeclaration(Node node, bool identifierIsOptional = true)
{
Node id = null;
List<Node> @params = new List<Node>();
List<Node> defaults = new List<Node>();
List<Node> body;
Token token;
Token stricted;
Options tmp;
Token firstRestricted = null;
string message = "";
bool previousStrict;
bool isGenerator;
bool previousAllowYield;
previousAllowYield = state.allowYield;
expectKeyword("function");
isGenerator = match("*");
if (isGenerator)
{
lex();
}
if (!identifierIsOptional || !match("("))
{
token = lookahead;
id = parseVariableIdentifier();
if (strict)
{
if (isRestrictedWord(token.value))
{
tolerateUnexpectedToken(token, Messages.StrictFunctionName);
}
}
else
{
if (isRestrictedWord(token.value))
{
firstRestricted = token;
message = Messages.StrictFunctionName;
}
else if (isStrictModeReservedWord(token.value))
{
firstRestricted = token;
message = Messages.StrictReservedWord;
}
}
}
state.allowYield = !isGenerator;
tmp = parseParams(firstRestricted);
@params = tmp.@params;
defaults = tmp.defaults;
stricted = tmp.stricted;
firstRestricted = tmp.firstRestricted;
if (tmp.message != null)
{
message = tmp.message;
}
previousStrict = strict;
body = new List<Node>() { parseFunctionSourceElements() };
if (strict && firstRestricted != null)
{
throwUnexpectedToken(firstRestricted, message);
}
if (strict && stricted != null)
{
tolerateUnexpectedToken(stricted, message);
}
strict = previousStrict;
state.allowYield = previousAllowYield;
return node.finishFunctionDeclaration(id, @params, defaults, body, isGenerator);
}