public IdentifierOperand DefineInternal(string name, bool canHaveMultiple = false)
{
name = "#" + name;
var frameScope = GetFrameScope();
var id = frameScope._nextId++;
IdentifierOperand identifier;
if (canHaveMultiple)
{
var n = 0;
string numberedName;
while (true)
{
numberedName = $"{name}_{n++}";
if (!IsDefined(numberedName))
{
break;
}
}
identifier = new IdentifierOperand(_localIndex, id, numberedName, false);
_identifiers.Add(numberedName, identifier);
return(identifier);
}
identifier = new IdentifierOperand(_localIndex, id, name, false);
_identifiers.Add(name, identifier);
return(identifier);
}
public int Store(IdentifierOperand operand)
{
if (operand.FrameIndex != LocalIndex)
{
Emit(new Instruction(InstructionType.StLoc, operand));
}
else
{
Emit(new Instruction(InstructionType.StLocF, new ImmediateOperand(operand.Id)));
}
return(-1);
}
public bool Define(string name, bool isReadOnly)
{
if (IsDefined(name))
{
return(false);
}
var frameScope = GetFrameScope();
var id = frameScope._nextId++;
var identifier = new IdentifierOperand(_localIndex, id, name, isReadOnly);
_identifiers.Add(name, identifier);
return(true);
}
public FunctionContext(ExpressionCompiler compiler, int frameIndex, Scope prevScope, string parentName, string name)
{
_instructions = new List <Instruction>();
_loopLabels = new IndexedStack <Tuple <LabelOperand, LabelOperand> >();
Compiler = compiler;
FrameIndex = frameIndex;
Scope = new Scope(frameIndex, prevScope);
ParentName = parentName;
Name = name;
FullName = string.Format("{0}{1}{2}", parentName, string.IsNullOrEmpty(parentName) ? "" : ".", Name ?? "");
AssignedName = name != null?prevScope.Get(name) : null;
Label = Compiler.MakeLabel("function");
IdentifierCount = 0;
}
public int Store(IdentifierOperand operand)
{
Emit(new Instruction(InstructionType.StLoc, operand));
return(-1);
}