private void ParseFunction(AccessLevel accessLevel, bool isStatic)
{
Token name = _lexer.Eat(TokenType.Identifer);
Token openParen = _lexer.Eat(TokenType.OpenParen);
//参数
List <DefineVariableNode> parms = new List <DefineVariableNode>();
if (!_lexer.Match(")"))
{
do
{
_lexer.Match(TokenType.Identifer); //TODO:使用Match函数报错
DefineVariableNode variable =
ParseDefineVariable(out AssignNode assign, false);
if (assign != null)
{
return; //TODO:报错 没有赋值
}
parms.Add(variable);
if (_lexer.Match(")"))
{
break;
}
} while (_lexer.MatchNow(","));
}
if (!_lexer.Match(")"))
{
return; //TODO:报错 意外的符号
}
Token closeParen = _lexer.Eat(TokenType.CloseParen);
//返回值
Token colon = null, returnToken = null;
string returnName = "void";
if (_lexer.Match(":"))
{
colon = _lexer.Eat(TokenType.Colon);
if (_lexer.Match(TokenType.Identifer))
{
returnToken = _lexer.Eat(TokenType.Identifer);
returnName = returnToken.Content;
}
else
{
return; //TODO:使用Match函数报错
}
}
FunctionDefinition function;
if (_parsingStructure is InterfaceDefinition)
{
if (_lexer.Match("{"))
{
return; //TODO:报错 接口成员不能有定义
}
_lexer.MatchNow(";"); //TODO:使用Match函数报错
function = new FunctionDefinition(name, openParen, closeParen, colon, returnToken, returnName,
null, null, _parsingStructure, parms, null, accessLevel, false);
_parsingStructure.AddFunction(function);
return;
}
ChunkNode chunkNode = ParseChunk(s_commonOrder, out Token openBrace, out Token closeBrace);
function = new FunctionDefinition(name, openParen, closeParen, colon, returnToken, returnName,
openBrace, closeBrace, _parsingStructure, parms, chunkNode, accessLevel, isStatic);
_parsingStructure.AddFunction(function);
}
