private Syntax.Expression ParsePrimaryExpr()
{
Syntax.Expression res = null;
switch (scan.Peek().type)
{
case Token.Type.CONST_CHAR:
res = new Syntax.Const(scan.Read(), tstack.GetType("char"));
break;
case Token.Type.CONST_DOUBLE:
res = new Syntax.Const(scan.Read(), tstack.GetType("double"));
break;
case Token.Type.CONST_INT:
res = new Syntax.Const(scan.Read(), tstack.GetType("int"));
break;
case Token.Type.CONST_STRING:
this.count_string++;
Symbols.ARRAY strt = new Symbols.ARRAY(tstack.GetType("char"));
Token str = scan.Read();
strt.SetSize(new Syntax.Const(str.GetStrVal().Length.ToString(), tstack.GetType("int")));
res = new Syntax.Const(str, strt);
break;
case Token.Type.IDENTIFICATOR:
Token t = scan.Read();
Symbols.Var v = new Symbols.SuperVar();
try
{
v = tstack.GetVariable(t);
}
catch (Symbols.Exception e)
{
this.logger.Add(e);
}
res = new Syntax.Identifier(t, v);
break;
case Token.Type.LPAREN:
scan.Read();
res = ParseExpression();
CheckToken(scan.Peek(), Token.Type.RPAREN, true);
break;
}
return(res);
}
private Syntax.Expression ParsePrimaryExpr()
{
Syntax.Expression res = null;
switch (scan.Peek().type)
{
case Token.Type.CONST_CHAR:
res = new Syntax.Const(scan.Read(), tstack.GetType("char"));
break;
case Token.Type.CONST_DOUBLE:
res = new Syntax.Const(scan.Read(), tstack.GetType("double"));
break;
case Token.Type.CONST_INT:
res = new Syntax.Const(scan.Read(), tstack.GetType("int"));
break;
case Token.Type.CONST_STRING:
this.count_string++;
Symbols.ARRAY strt = new Symbols.ARRAY(tstack.GetType("char"));
Token str = scan.Read();
strt.SetSize(new Syntax.Const(str.GetStrVal().Length.ToString(), tstack.GetType("int")));
res = new Syntax.Const(str, strt);
break;
case Token.Type.IDENTIFICATOR:
Token t = scan.Read();
Symbols.Var v = new Symbols.SuperVar();
try
{
v = tstack.GetVariable(t);
}
catch (Symbols.Exception e)
{
this.logger.Add(e);
}
res = new Syntax.Identifier(t, v);
break;
case Token.Type.LPAREN:
scan.Read();
res = ParseExpression();
CheckToken(scan.Peek(), Token.Type.RPAREN, true);
break;
}
return res;
}
