internal override Syntax_Node ParseLex(Lex.Data data)
{
switch (codePhase)
{
case CodePhase.Code:
// TODO parse code
switch (data.token)
{
case Token.Keyword:
{
var keyword = (Keyword)data.number.i_32;
switch (keyword)
{
case Keyword.If:
return(AddChild(Syntax_Node.Create <Syntax_If>(data, this)));
case Keyword.Loop:
return(AddChild(Syntax_Node.Create <Syntax_Loop>(data, this)));
case Keyword.Block:
return(AddChild(Syntax_Node.Create <Syntax_Block>(data, this)));
case Keyword.Return:
codePhase = CodePhase.Return;
return(this);
default:
// {
// var exception = new SyntaxException(Syntax.Error.InvalidKeyword);
// exception.content = keyword.ToString();
// throw exception;
// }
return(this);
}
}
default:
// {
// var exception = new SyntaxException(Syntax.Error.InvalidToken);
// exception.content = data.token.ToString();
// throw exception;
// }
return(this);
}
case CodePhase.Return:
switch (data.token)
{
case Token.Keyword:
// TODO save
if (Syntax.constantKeywordList.Contains((Keyword)data.number.i_32))
{
// TODO save
codePhase = CodePhase.ReturnSeparator;
return(this);
}
else
{
var exception = new SyntaxException(Syntax.Error.InvalidToken);
exception.content = data.token.ToString();
throw exception;
}
case Token.Identify:
// TODO save
codePhase = CodePhase.ReturnSeparator;
return(this);
default:
if (Syntax.constantTokenList.Contains(data.token))
{
// TODO save
codePhase = CodePhase.ReturnSeparator;
return(this);
}
else
{
var exception = new SyntaxException(Syntax.Error.InvalidToken);
exception.content = data.token.ToString();
throw exception;
}
}
case CodePhase.ReturnSeparator:
if (Token.Operator == data.token)
{
var op = (Operator)data.number.i_32;
if (Operator.Comma == op)
{
codePhase = CodePhase.Return;
return(this);
}
else
{
var exception = new SyntaxException(Syntax.Error.InvalidOperator);
exception.content = op.ToString();
throw exception;
}
}
else
{
var exception = new SyntaxException(Syntax.Error.InvalidToken);
exception.content = data.token.ToString();
throw exception;
}
}
return(this);
}
internal override void DoConstruct(Lex.Data data)
{
base.DoConstruct(data);
codePhase = CodePhase.Code;
}