public override AstNode Visit(PostfixOperation node)
{
// Begin the node.
builder.BeginNode(node);
// Get the expressions.
Expression variableExpr = node.GetVariable();
// Get the types.
IChelaType variableType = variableExpr.GetNodeType();
IChelaType coercionType = node.GetCoercionType();
// Get the variable.
Variable variable = (Variable)variableExpr.GetNodeValue();
variableExpr.Accept(this);
// Duplicate the variable reference.
DuplicateReference(node, variable);
// Read the variable.
Cast(node, variable, variableType, coercionType);
// Duplicate the value and reference.
uint args = GetVariableParameters(node, variable) + 1u;
if(args == 1u)
builder.CreateDup1();
else if(args == 2u)
builder.CreateDup2();
else
builder.CreateDup(args);
// Send the right operand.
if(coercionType.IsPointer())
{
builder.CreateLoadUInt32(1);
}
else
{
builder.CreateLoadInt32(1);
if(ChelaType.GetIntType() != coercionType)
Cast(node, null, ChelaType.GetIntType(), coercionType);
}
// Perform the operation
switch(node.GetOperation())
{
case PostfixOperation.Increment:
builder.CreateAdd();
break;
case PostfixOperation.Decrement:
builder.CreateSub();
break;
default:
Error(node, "invalid prefix operation.");
break;
}
// Now, perform the assignment.
PerformAssignment(node, variable);
// Remove the extra reference.
for(uint i = 1; i < args; i++)
builder.CreateRemove(1u);
return builder.EndNode();
}
public override AstNode Visit(PostfixOperation node)
{
// Get the variable.
Expression variableExpr = node.GetVariable();
// Visit the variable.
variableExpr.Accept(this);
// Check the types.
IChelaType variableType = variableExpr.GetNodeType();
// The variable must be a reference.
if(!variableType.IsReference())
Error(node, "trying to set something that isn't a reference.");
// Check the operation type.
IChelaType coercionType = DeReferenceType(variableType);
if(coercionType.IsConstant())
Error(node, "cannot modify constants.");
// TODO: Add operator overloading.
if(!coercionType.IsInteger() && !coercionType.IsFloat() && !coercionType.IsPointer())
Error(node, "increment/decrement operator expected an integer/float/pointer variable.");
// Set the node types.
node.SetCoercionType(coercionType);
node.SetNodeType(coercionType);
return node;
}