public override object VisitFunctionDeclaration([NotNull] CMinusParser.FunctionDeclarationContext context)
{
this.inGlobalScope = false;
this.writer.DisableGlobalBuffer();
string functionLabel = this.labelGenerator.GenerateFunctionLabel(context.ID().GetText());
this.writer.WriteLabel(functionLabel);
this.writer.WriteNoOperation("PSP");
this.EnterContext();
this.Visit(context.parameters());
this.Visit(context.compoundStatement());
this.ExitContext();
this.writer.WriteLabel(this.labelGenerator.FunctionReturnLabel());
this.writer.WriteFunctionExit();
this.writer.EnableGlobalBuffer();
this.inGlobalScope = true;
return(null);
}
public override object VisitFunctionDeclaration([NotNull] CMinusParser.FunctionDeclarationContext context)
{
string functionType = SymbolTable.Symbol.RemoveExtras(context.typeSpecifier().GetText());
string functionName = context.ID().GetText();
List <SymbolTable.Symbol> parameters = (List <SymbolTable.Symbol>) this.Visit(context.parameters()); // Visit parameters
SymbolTable.Symbol functionSymbol = new SymbolTable.Symbol(
id: functionName,
type: functionType,
construct: SymbolTable.Symbol.Construct.FUNCTION,
size: (uint)parameters.Count,
scope: this.internalScope,
pointerCount: 0
);
functionSymbol.AddMembers(parameters);
bool success = this.symbolTable.AddSymbol(functionSymbol);
if (!success)
{
this.EmitSemanticErrorMessage($"Symbol {functionName} already in symbol table as a {this.symbolTable.GetSymbol(functionName).construct}", context);
}
return(null);
}