WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(F64CopySignOpcode opcode, WasmNodeArg arg)
{
var right = arg.Pop();
var left = arg.Pop();
arg.Push(new F64CopySignNode(left, right));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(I32GeuOpcode opcode, WasmNodeArg arg)
{
var right = arg.Pop();
var left = arg.Pop();
arg.Push(new I32GeuNode(left, right));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(I32Store16Opcode opcode, WasmNodeArg arg)
{
var value = arg.Pop();
var address = arg.Pop();
arg.Push(new I32Store16Node(opcode.Immediate, address, value));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(SelectOpcode opcode, WasmNodeArg arg)
{
var condition = arg.Pop();
var second = arg.Pop();
var first = arg.Pop();
arg.Push(new SelectNode(condition, first, second));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(CallIndirectOpcode opcode, WasmNodeArg arg)
{
var target = arg.Context.ResolveType(opcode.TypeIndex);
var element = arg.Pop();
var node = new CallIndirectNode(target, element);
for (var i = target.Parameters.Count - 1; i >= 0; i--)
{
var param = arg.Pop();
node.Arguments.Insert(0, param);
}
arg.Push(node);
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(F64ReinterpretI64Opcode opcode, WasmNodeArg arg)
{
var operand = arg.Pop();
arg.Push(new F64ReinterpretI64Node(operand));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(F64SqrtOpcode opcode, WasmNodeArg arg)
{
var expr = arg.Pop();
arg.Push(new F64SqrtNode(expr));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(I64Load8UOpcode opcode, WasmNodeArg arg)
{
var address = arg.Pop();
arg.Push(new I64Load8UNode(opcode.Immediate, address));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(GrowMemoryOpcode opcode, WasmNodeArg arg)
{
var value = arg.Pop();
arg.Push(new GrowMemoryNode(value));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(I32ReinterpretF32Opcode opcode, WasmNodeArg arg)
{
var operand = arg.Pop();
arg.Push(new I32ReinterpretF32Node(operand));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(I32EqzOpcode opcode, WasmNodeArg arg)
{
var expr = arg.Pop();
arg.Push(new I32EqzNode(expr));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(I64TruncUF64Opcode opcode, WasmNodeArg arg)
{
var operand = arg.Pop();
arg.Push(new I64TruncUF64Node(operand));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(DropOpcode opcode, WasmNodeArg arg)
{
var op = arg.Pop();
arg.Push(new DropNode(op));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(I64ExtendUI32Opcode opcode, WasmNodeArg arg)
{
var operand = arg.Pop();
arg.Push(new I64ExtendUI32Node(operand));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(F64PromoteF32Opcode opcode, WasmNodeArg arg)
{
var operand = arg.Pop();
arg.Push(new F64PromoteF32Node(operand));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(F32ConvertUI64Opcode opcode, WasmNodeArg arg)
{
var operand = arg.Pop();
arg.Push(new F32ConvertUI64Node(operand));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(SetGlobalOpcode opcode, WasmNodeArg arg)
{
var expr = arg.Pop();
var variable = arg.ResolveGlobal(opcode.GlobalIndex);
arg.Push(new SetGlobalNode(variable, expr));
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(BrIfOpcode opcode, WasmNodeArg arg)
{
var label = arg.ResolveLabel(opcode.RelativeDepth);
var condition = arg.Pop();
var node = new BrIfNode(condition, label);
arg.Push(node);
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(IfOpcode opcode, WasmNodeArg arg)
{
var condition = arg.Pop();
var ifNode = new IfNode(condition, opcode.Signature);
var thenBlock = new NodesList(opcode.Signature);
ifNode.Then = thenBlock;
arg.Push(ifNode);
arg.PushBlock(thenBlock);
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(CallOpcode opcode, WasmNodeArg arg)
{
var target = arg.Context.ResolveFunction(opcode.FunctionIndex);
var node = new CallNode(target);
for (var i = target.Signature.Parameters.Count - 1; i >= 0; i--)
{
var param = arg.Pop();
node.Arguments.Insert(0, param);
}
arg.Push(node);
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(BrTableOpcode opcode, WasmNodeArg arg)
{
var operand = arg.Pop();
var node = new BrTableNode(operand);
foreach (var target in opcode.Targets)
{
var label = arg.ResolveLabel(target);
node.Targets.Add(label);
}
node.DefaultTarget = arg.ResolveLabel(opcode.DefaultTarget);
arg.Push(node);
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(ElseOpcode opcode, WasmNodeArg arg)
{
arg.PopBlock();
var parentNode = arg.Pop();
var ifNode = parentNode as IfNode;
if (ifNode == null)
{
throw new WasmNodeException("if node expected");
}
var elseBlock = new NodesList(ifNode.Signature);
ifNode.Else = elseBlock;
arg.Push(ifNode);
arg.PushBlock(elseBlock);
return(null);
}
WasmNodeResult IWasmOpcodeVisitor <WasmNodeArg, WasmNodeResult> .Visit(ReturnOpcode opcode, WasmNodeArg arg)
{
var farg = (WasmFunctionNodeArg)arg; //todo:
var returnType = farg.Function.Signature.Return;
switch (returnType)
{
case WasmType.I32:
case WasmType.I64:
case WasmType.F32:
case WasmType.F64:
var res = arg.Pop();
arg.Push(new ReturnNode(res));
break;
default:
arg.Push(new ReturnNode());
break;
}
return(null);
}