public override int Compile(FunctionContext context)
{
context.Line(FileName, Line);
var enumerator = context.DefineInternal("enumerator", true);
var stack = 0;
var start = context.MakeLabel("foreachStart");
var end = context.MakeLabel("foreachEnd");
// set enumerator
stack += Expression.Compile(context);
stack += context.LoadField(context.String("getEnumerator"));
stack += context.Call(0);
stack += context.Store(enumerator);
// loop while moveNext returns true
stack += context.Bind(start);
stack += context.Load(enumerator);
stack += context.LoadField(context.String("moveNext"));
stack += context.Call(0);
stack += context.JumpFalse(end);
// loop body
context.PushScope();
context.PushLoop(start, end);
if (!context.DefineIdentifier(Identifier))
{
throw new MondCompilerException(FileName, Line, CompilerError.IdentifierAlreadyDefined, Identifier);
}
var identifier = context.Identifier(Identifier);
stack += context.Load(enumerator);
stack += context.LoadField(context.String("current"));
stack += context.Store(identifier);
stack += Block.Compile(context);
stack += context.Jump(start);
context.PopLoop();
context.PopScope();
// after loop
stack += context.Bind(end);
stack += context.Load(enumerator);
stack += context.LoadField(context.String("dispose"));
stack += context.Call(0);
stack += context.Drop();
CheckStack(stack, 0);
return(stack);
}
public override int Compile(FunctionContext context)
{
context.Line(FileName, Line);
var stack = Arguments.Sum(argument => argument.Compile(context));
stack += Method.Compile(context);
stack += context.Call(Arguments.Count);
CheckStack(stack, 1);
return(stack);
}
public override int Compile(FunctionContext context)
{
var stack = Arguments.Sum(argument => argument.Compile(context));
stack += Method.Compile(context);
context.Position(Token); // debug info
stack += context.Call(Arguments.Count, GetUnpackIndices());
CheckStack(stack, 1);
return(stack);
}
public override int Compile(FunctionContext context)
{
context.Line(FileName, Line);
foreach (var argument in Arguments)
{
CompileCheck(context, argument, 1);
}
CompileCheck(context, Method, 1);
context.Call(Arguments.Count);
return 1;
}
public override int Compile(FunctionContext context)
{
context.Position(Token);
var stack = 0;
var start = context.MakeLabel("foreachStart");
var cont = context.MakeLabel("foreachContinue");
var brk = context.MakeLabel("foreachBreak");
var end = context.MakeLabel("foreachEnd");
var containsFunction = new LoopContainsFunctionVisitor();
Block.Accept(containsFunction);
var enumerator = context.DefineInternal("enumerator", true);
// set enumerator
context.Statement(Expression);
stack += Expression.Compile(context);
stack += context.LoadField(context.String("getEnumerator"));
stack += context.Call(0, new List <ImmediateOperand>());
stack += context.Store(enumerator);
var loopContext = containsFunction.Value ? new LoopContext(context) : context;
// loop body
loopContext.PushScope();
loopContext.PushLoop(containsFunction.Value ? cont : start, containsFunction.Value ? brk : end);
IdentifierOperand identifier;
if (DestructureExpression != null)
{
identifier = context.DefineInternal(Identifier, true);
}
else
{
// create the loop variable outside of the loop context (but inside of its scope!)
if (!context.DefineIdentifier(Identifier))
{
throw new MondCompilerException(this, CompilerError.IdentifierAlreadyDefined, Identifier);
}
identifier = context.Identifier(Identifier);
}
stack += loopContext.Bind(start); // continue (without function)
if (containsFunction.Value)
{
stack += loopContext.Enter();
}
// loop while moveNext returns true
context.Statement(InToken, InToken);
stack += loopContext.Load(enumerator);
stack += loopContext.LoadField(context.String("moveNext"));
stack += loopContext.Call(0, new List <ImmediateOperand>());
stack += loopContext.JumpFalse(containsFunction.Value ? brk : end);
stack += loopContext.Load(enumerator);
stack += loopContext.LoadField(context.String("current"));
stack += loopContext.Store(identifier);
if (DestructureExpression != null)
{
stack += loopContext.Load(identifier);
stack += DestructureExpression.Compile(loopContext);
}
stack += Block.Compile(loopContext);
if (containsFunction.Value)
{
stack += loopContext.Bind(cont); // continue (with function)
stack += loopContext.Leave();
}
stack += loopContext.Jump(start);
if (containsFunction.Value)
{
stack += loopContext.Bind(brk); // break (with function)
stack += loopContext.Leave();
}
loopContext.PopLoop();
loopContext.PopScope();
// after loop
stack += context.Bind(end); // break (without function)
stack += context.Load(enumerator);
stack += context.LoadField(context.String("dispose"));
stack += context.Call(0, new List <ImmediateOperand>());
stack += context.Drop();
CheckStack(stack, 0);
return(stack);
}
public override int Compile(FunctionContext context)
{
context.Position(Token);
var stack = Initializer?.Compile(context) ?? 1;
var global = context.ArgIndex == 0 && context.Compiler.Options.MakeRootDeclarationsGlobal;
var hasSlice = false;
var headSize = 0;
var tailSize = 0;
foreach (var index in Indices)
{
if (index.IsSlice)
{
if (hasSlice)
{
throw new InvalidOperationException($"Multiple slices in {nameof(DestructuredArrayExpression)}");
}
hasSlice = true;
}
else if (hasSlice)
{
tailSize++;
}
else
{
headSize++;
}
}
var fixedSize = headSize + tailSize;
stack += context.Dup();
stack += context.LoadField(context.String("length"));
stack += context.Call(0, new List <ImmediateOperand>());
var inTail = false;
var fixedI = 0;
for (var i = 0; i < Indices.Count; i++)
{
var index = Indices[i];
var assign = context.MakeLabel("arrayDestructureAssign");
var destruct = context.MakeLabel("arrayDestructureIndex");
if (index.IsSlice)
{
inTail = true;
}
if (i < Indices.Count - 1)
{
stack += context.Dup2(); // -> init.length(), init
}
stack += context.Load(context.Number(index.IsSlice ? fixedSize : fixedI));
stack += context.BinaryOperation(TokenType.GreaterThan);
stack += context.JumpTrue(destruct);
stack += context.Drop(); // drops initializer
stack += index.IsSlice ? context.NewArray(0) : context.LoadUndefined();
stack += context.Jump(assign);
stack += context.Bind(destruct);
if (index.IsSlice)
{
stack += context.Load(context.Number(fixedI));
stack += context.Load(context.Number(-tailSize - 1));
stack += context.LoadUndefined();
stack += context.Slice();
}
else
{
stack += context.Load(context.Number(inTail ? fixedI - fixedSize : fixedI));
stack += context.LoadArray();
}
stack += context.Bind(assign);
if (global)
{
stack += context.LoadGlobal();
stack += context.StoreField(context.String(index.Name));
}
else
{
if (!context.DefineIdentifier(index.Name, IsReadOnly))
{
throw new MondCompilerException(this, CompilerError.IdentifierAlreadyDefined, index.Name);
}
stack += context.Store(context.Identifier(index.Name));
}
if (!index.IsSlice)
{
fixedI++;
}
}
CheckStack(stack, 0);
return(-1);
}