private static bool character_literal()
{
if (Tokens.GetToken().type == Token.Type.Character)
{
string value = Tokens.GetToken().lexeme.Replace("\'", "");
string[] data = new string[2];
data[0] = "returnType:char";
data[1] = "accessMod:public";
Symbol symbol = new Symbol("g", ("H" + value.Trim()), "CHAR_" + value, "c**t", data);
SymbolTable.Add(symbol);
if (semanticPass)
{
SemanticActions.lPush(symbol, Tokens.GetToken(), scope);
}
return(true);
}
return(false);
}
private static bool numeric_literal()
{
if (Tokens.GetToken().lexeme == "+" || Tokens.GetToken().lexeme == "-")
{
if (Tokens.PeekToken().type != Token.Type.Number)
{
return(false);
}
string sign = Tokens.GetToken().lexeme;
if (sign == "+")
{
sign = "";
}
Tokens.NextToken();
string[] data = new string[2];
data[0] = "returnType:int";
data[1] = "accessMod:public";
Symbol symbol = new Symbol("g", ("N" + sign + Tokens.GetToken().lexeme), (sign + Tokens.GetToken().lexeme), "ilit", data);
SymbolTable.Add(symbol);
if (semanticPass)
{
SemanticActions.lPush(symbol, Tokens.GetToken(), scope);
}
}
else if (Tokens.GetToken().type == Token.Type.Number)
{
string[] data = new string[2];
data[0] = "returnType:int";
data[1] = "accessMod:public";
Symbol symbol = new Symbol("g", ("N" + Tokens.GetToken().lexeme), Tokens.GetToken().lexeme, "ilit", data);
SymbolTable.Add(symbol);
if (semanticPass)
{
SemanticActions.lPush(symbol, Tokens.GetToken(), scope);
}
}
else
{
return(false);
}
return(true);
}
private static bool Expression()
{
string lexeme = Tokens.GetToken().lexeme;
if (lexeme == "(")
{
if (semanticPass)
{
SemanticActions.oPush(Tokens.GetToken());
}
Tokens.NextToken();
if (!Expression())
{
SyntaxError(Tokens.GetToken(), "expression");
}
if (Tokens.GetToken().lexeme != ")")
{
SyntaxError(Tokens.GetToken(), ")");
}
if (semanticPass)
{
SemanticActions.ShuntYardAll();
}
Tokens.NextToken();
Expressionz();
return(true);
}
else if (lexeme == "+" || lexeme == "-" || lexeme == "true" || lexeme == "false" ||
lexeme == "null" || lexeme == "this" || Tokens.GetToken().type == Token.Type.Number ||
Tokens.GetToken().type == Token.Type.Character)
{
if (Tokens.GetToken().lexeme == "this")
{
if (semanticPass)
{
SemanticActions.iPush(Tokens.GetToken(), scope);
SemanticActions.iExist();
}
Tokens.NextToken();
Member_Refz();
Expressionz();
return(true);
}
else if (lexeme == "true" || lexeme == "false" || lexeme == "null")
{
string[] data = new string[2];
data[0] = "returnType:bool";
data[1] = "accessMod:public";
Symbol symbol;
if (lexeme == "true")
{
symbol = new Symbol("g", ("Btrue"), "1", "blit", data);
}
else if (lexeme == "false")
{
symbol = new Symbol("g", ("Bfalse"), "0", "blit", data);
}
else
{
data[0] = "returnType:null";
symbol = new Symbol("g", "null", "2018", "null", data);
}
SymbolTable.Add(symbol);
if (semanticPass)
{
SemanticActions.lPush(symbol, Tokens.GetToken(), scope);
}
Tokens.NextToken();
Expressionz();
return(true);
}
else if (numeric_literal())
{
Tokens.NextToken();
Expressionz();
return(true);
}
else if (character_literal())
{
Tokens.NextToken();
Expressionz();
return(true);
}
return(false);
}
else if (Tokens.GetToken().type == Token.Type.Identifier)
{
currentIdentifier = Tokens.GetToken().lexeme;
if (semanticPass)
{
SemanticActions.iPush(Tokens.GetToken(), scope);
}
Tokens.NextToken();
Fn_Arr_Member();
if (semanticPass)
{
SemanticActions.iExist();
}
Member_Refz();
Expressionz();
return(true);
}
return(false);
}
