// Writes all string literals to data segment
private void ProcessStringLiterals()
{
for (int i = 0; i < SymbolTable.StringLiteralCount; i++)
{
StringLiteralNode node = (StringLiteralNode)SymbolTable.LookupNode($"_S{i}");
OutputAssembly($"__S{i} DB {node.Literal}, \"$\"", 1);
}
}
// OutputOptions -> IdentifierToken | StringLiteralToken | EndLineToken
private bool ProcessOutputOptions()
{
if (LexicalAnaylzer.Token == Token.IdentifierToken)
{
VariableNode node = (VariableNode)SymbolTable.LookupNode(LexicalAnaylzer.Lexeme);
if (node == null)
{
CommonTools.PromptProgramErrorExit($"ERROR: Line {LexicalAnaylzer.LineNumber} Use of " +
$"undeclared variable \"{LexicalAnaylzer.Lexeme}\"");
return(false);
}
if (node.Type == Token.CharToken)
{
OutputThreeAddressCode($"\t_WRC {GetThreeAddressCodeName(LexicalAnaylzer.Lexeme)}");
}
else if (node.Type == Token.IntToken)
{
OutputThreeAddressCode($"\t_WRI {GetThreeAddressCodeName(LexicalAnaylzer.Lexeme)}");
}
else
{
OutputThreeAddressCode($"\t_WRF {GetThreeAddressCodeName(LexicalAnaylzer.Lexeme)}");
}
LexicalAnaylzer.GetNextToken();
}
else if (LexicalAnaylzer.Token == Token.StringLiteralToken)
{
StringLiteralNode node = new StringLiteralNode()
{
Lexeme = $"_S{SymbolTable.StringLiteralCount}",
Literal = LexicalAnaylzer.Lexeme
};
SymbolTable.InsertNode(node);
OutputThreeAddressCode($"\t_WRS {node.Lexeme}");
LexicalAnaylzer.GetNextToken();
}
else
{
OutputThreeAddressCode($"\t_WRL");
if (!MatchToken(Token.EndLineToken))
{
return(false);
}
}
return(true);
}