public sealed override object VisitFunctionReturnStatement([NotNull] ClepsParser.FunctionReturnStatementContext context)
{
CurrentBlockStatus.Last().ReturnStatementReached = true;
var ret = VisitFunctionReturnStatement_Ex(context);
return(ret);
}
public override bool VisitFunctionReturnStatement_Ex([NotNull] ClepsParser.FunctionReturnStatementContext context)
{
IValue returnValue = null;
if (context.rightHandExpression() != null)
{
returnValue = Visit(context.rightHandExpression()) as IValue;
}
var currFunctionType = CurrMethodGenerator.ExpressionType as FunctionClepsType;
if (currFunctionType.ReturnType != returnValue.ExpressionType)
{
string errorMessage = String.Format("Expected return of {0}. Returning type {1} instead.", currFunctionType.ReturnType.GetClepsTypeString(), returnValue.ExpressionType.GetClepsTypeString());
Status.AddError(new CompilerError(FileName, context.rightHandExpression().Start.Line, context.rightHandExpression().Start.Column, errorMessage));
}
CurrMethodGenerator.CreateReturnStatement(returnValue);
return(true);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////// Function Statement Implementations ///////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#region Function Statement Implementations
// Note - the return of statements are not really used. It is more used in the expression returns, which is in the next section
public override LLVMRegister VisitFunctionReturnStatement([NotNull] ClepsParser.FunctionReturnStatementContext context)
{
LLVMValueRef returnValueRegister;
ClepsType returnType;
if (context.rightHandExpression() == null)
{
returnValueRegister = LLVM.BuildRetVoid(Builder);
returnType = ClepsType.GetVoidType();
}
else
{
var returnValuePtr = Visit(context.rightHandExpression());
returnValueRegister = LLVM.BuildLoad(Builder, returnValuePtr.LLVMPtrValueRef, "returnValue");
LLVM.BuildRet(Builder, returnValueRegister);
returnType = returnValuePtr.VariableType;
}
var ret = new LLVMRegister(returnType, returnValueRegister);
return(ret);
}
public override object VisitFunctionReturnStatement_Ex([NotNull] ClepsParser.FunctionReturnStatementContext context)
{
IValue returnValue = null;
if (context.rightHandExpression() != null)
{
returnValue = Visit(context.rightHandExpression()) as IValue;
}
var currFunctionType = CurrMemberType as FunctionClepsType;
if (currFunctionType.ReturnType != returnValue.ExpressionType)
{
string errorMessage = String.Format("Expected return of {0}. Returning type {1} instead.", currFunctionType.ReturnType.GetClepsTypeString(), returnValue.ExpressionType.GetClepsTypeString());
Status.AddError(new CompilerError(FileName, context.rightHandExpression().Start.Line, context.rightHandExpression().Start.Column, errorMessage));
}
IMethodRegister methodRegister = CodeGenerator.GetMethodRegister(FullyQualifiedClassName, CurrMemberIsStatic, CurrMemberType, CurrMemberName);
methodRegister.CreateReturnStatement(returnValue);
return(returnValue);
}
/// <summary>
/// Exit a parse tree produced by <see cref="ClepsParser.functionReturnStatement"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitFunctionReturnStatement([NotNull] ClepsParser.FunctionReturnStatementContext context)
{
}
/// <summary>
/// Visit a parse tree produced by <see cref="ClepsParser.functionReturnStatement"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitFunctionReturnStatement([NotNull] ClepsParser.FunctionReturnStatementContext context)
{
return(VisitChildren(context));
}
public virtual bool VisitFunctionReturnStatement_Ex([NotNull] ClepsParser.FunctionReturnStatementContext context)
{
VisitChildren(context); return(true);
}
