public override void Compile(Assembly assembly, Scope scope, Register target)
{
var topLabel = Scope.GetLabel() + "BEGIN_WHILE";
assembly.Add(":" + topLabel, "", "");
var clauseOrder = CompileConditional(assembly, scope, ChildNodes[0] as CompilableNode);
if (clauseOrder == ClauseOrder.ConstantPass)
{
CompileBlock(assembly, scope, ChildNodes[1] as CompilableNode);
assembly.Add("SET", "PC", topLabel);
}
else if (clauseOrder == ClauseOrder.ConstantFail)
{
}
else if (clauseOrder == ClauseOrder.PassFirst)
{
var endLabel = Scope.GetLabel() + "END";
assembly.Add("SET", "PC", endLabel);
CompileBlock(assembly, scope, ChildNodes[1] as CompilableNode);
assembly.Add("SET", "PC", topLabel);
assembly.Add(":" + endLabel, "", "");
}
else if (clauseOrder == ClauseOrder.FailFirst)
{
var elseLabel = Scope.GetLabel() + "ELSE";
var endLabel = Scope.GetLabel() + "END";
assembly.Add("SET", "PC", elseLabel);
assembly.Add("SET", "PC", endLabel);
assembly.Add(":" + elseLabel, "", "");
CompileBlock(assembly, scope, ChildNodes[1] as CompilableNode);
assembly.Add("SET", "PC", topLabel);
assembly.Add(":" + endLabel, "", "");
}
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
var variable = scope.FindVariable(AsString);
if (variable == null) throw new CompileError("Could not find variable " + AsString);
if (variable.location == Register.CONST)
{
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), variable.staticLabel);
}
else if (variable.location == Register.STATIC)
{
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), "[" + variable.staticLabel + "]");
}
else if (variable.location == Register.STACK)
{
if (scope.stackDepth - variable.stackOffset > 1)
{
assembly.Add("SET", Scope.TempRegister, "SP");
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), "[" + hex(scope.stackDepth - variable.stackOffset - 1) + "+" + Scope.TempRegister + "]", "Fetching variable");
}
else
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), "PEEK", "Fetching variable");
}
else
{
if (target == variable.location) return;
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), Scope.GetRegisterLabelSecond((int)variable.location), "Fetching variable");
}
if (target == Register.STACK) scope.stackDepth += 1;
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
var lines = AsString.Split(new String[2]{"\n", "\r"}, StringSplitOptions.RemoveEmptyEntries);
assembly.Barrier();
foreach (var str in lines)
assembly.Add(str + " ;", "", "");
}
public override void Compile(List<String> assembly, Scope scope)
{
(ChildNodes[1] as CompilableNode).Compile(assembly, scope);
(ChildNodes[0] as CompilableNode).Compile(assembly, scope);
if (AsString == "==")
{
assembly.Add("SET A, 0x0");
assembly.Add("IFE POP, POP");
assembly.Add("SET A, 0x1");
}
else if (AsString == "!=")
{
assembly.Add("SET A, 0x0");
assembly.Add("IFN POP, POP");
assembly.Add("SET A, 0x1");
}
else
{
assembly.Add("SET A, POP");
assembly.Add(opcodes[AsString] + " A, POP");
}
assembly.Add("SET PUSH, A");
scope.stackDepth -= 1;
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
throw new CompileError("Comparisons in general expressions are not implemented");
//Evaluate in reverse in case both need to go on the stack
var secondTarget = scope.FindFreeRegister();
if (Scope.IsRegister((Register)secondTarget)) scope.UseRegister(secondTarget);
(ChildNodes[1] as CompilableNode).Compile(assembly, scope, (Register)secondTarget);
if (AsString == "==" || AsString == "!=")
{
(ChildNodes[0] as CompilableNode).Compile(assembly, scope, Register.STACK);
if (target == Register.STACK)
{
assembly.Add("SET", Scope.TempRegister, "0x0", "Equality onto stack");
assembly.Add((AsString == "==" ? "IFE" : "IFN"), "POP", Scope.GetRegisterLabelSecond(secondTarget));
assembly.Add("SET", Scope.TempRegister, "0x1");
assembly.Add("SET", "PUSH", Scope.TempRegister);
}
else
{
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), "0x0", "Equality into register");
assembly.Add((AsString == "==" ? "IFE" : "IFN"), "POP", Scope.GetRegisterLabelSecond(secondTarget));
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), "0x1");
}
}
if (secondTarget == (int)Register.STACK)
scope.stackDepth -= 1;
else
scope.FreeRegister(secondTarget);
}
public override void Init(Irony.Parsing.ParsingContext context, Irony.Parsing.ParseTreeNode treeNode)
{
base.Init(context, treeNode);
AddChild("Block", treeNode.ChildNodes[3]);
localScope = new Scope();
var parameters = treeNode.ChildNodes[2].ChildNodes;
for (int i = 0; i < parameters.Count; ++i)
{
var variable = new Variable();
variable.scope = localScope;
variable.name = parameters[i].ChildNodes[0].FindTokenAndGetText();
localScope.variables.Add(variable);
if (i < 3)
{
variable.location = (Register)i;
localScope.UseRegister(i);
}
else
{
variable.location = Register.STACK;
variable.stackOffset = localScope.stackDepth;
localScope.stackDepth += 1;
}
parameterCount += 1;
}
this.AsString = treeNode.ChildNodes[1].FindTokenAndGetText();
label = Scope.GetLabel() + "_" + AsString;
localScope.activeFunction = this;
}
public override void Compile(List<string> assembly, Scope scope)
{
(ChildNodes[0] as CompilableNode).Compile(assembly, scope);
assembly.Add("SET A, POP");
scope.stackDepth -= 1;
scope.activeFunction.CompileReturn(assembly);
}
public static void CompileBlock(Assembly assembly, Scope scope, CompilableNode block)
{
var blockScope = BeginBlock(scope);
assembly.Barrier();
block.Compile(assembly, blockScope, Register.DISCARD);
assembly.Barrier();
EndBlock(assembly, blockScope);
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
foreach (var child in ChildNodes)
{
assembly.Barrier();
(child as CompilableNode).Compile(assembly, scope, Register.DISCARD);
}
}
internal Scope Push(Scope child)
{
child.parent = this;
child.stackDepth = stackDepth;
child.parentDepth = stackDepth;
child.activeFunction = activeFunction;
return child;
}
public override void CompileFunction(Assembly assembly, Scope topscope)
{
//if (references == 0) return;
foreach (var line in code)
{
assembly.Barrier();
assembly.Add(line, "", "");
}
}
public override void Compile(List<string> assembly, Scope scope)
{
var func = findFunction(this, AsString);
if (func == null) throw new CompileError("Can't find function - " + AsString);
if (func.parameterCount != ChildNodes.Count) throw new CompileError("Incorrect number of arguments - " + AsString);
foreach (var child in ChildNodes)
(child as CompilableNode).Compile(assembly, scope);
assembly.Add("JSR " + func.label);
assembly.Add("SET PUSH, A");
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
var reg = scope.FindAndUseFreeRegister();
(ChildNodes[0] as CompilableNode).Compile(assembly, scope, (Register)reg);
if (reg != (int)Register.A) assembly.Add("SET", "A", Scope.GetRegisterLabelSecond(reg));
scope.FreeMaybeRegister(reg);
if (reg == (int)Register.STACK) scope.stackDepth -= 1;
if (scope.activeFunction != null) scope.activeFunction.CompileReturn(assembly, scope);
else assembly.Add("BRK", "", "");
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
//if (data.Count == 1)
// assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), hex(data[0]));
//else
//{
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), dataLabel);
Scope.AddData(dataLabel, data);
//}
if (target == Register.STACK) scope.stackDepth += 1;
}
public override void Compile(List<string> assembly, Scope scope)
{
var newVariable = new Variable();
newVariable.name = AsString;
newVariable.scope = scope;
newVariable.stackOffset = scope.stackDepth;
(ChildNodes[0] as CompilableNode).Compile(assembly, scope);
scope.variables.Add(newVariable);
scope.stackDepth += 1;
}
public override void Compile(List<string> assembly, Scope scope)
{
var lines = AsString.Split(new String[2]{"\n", "\r"}, StringSplitOptions.RemoveEmptyEntries);
int stackChange = 0;
foreach (var str in lines)
{
if (str.ToUpper().Contains("PUSH")) stackChange += 1;
if (str.ToUpper().Contains("POP")) stackChange -= 1;
assembly.Add(str);
}
scope.stackDepth += stackChange;
}
public override void Compile(List<String> assembly, Scope scope)
{
if (AsString.StartsWith("0x"))
{
var hexPart = AsString.Substring(2).ToUpper();
while (hexPart.Length < 4) hexPart = "0" + hexPart;
assembly.Add("SET PUSH, 0x" + hexPart);
}
else
assembly.Add("SET PUSH, " + hex(AsString));
scope.stackDepth += 1;
}
public override void Compile(List<string> assembly, Scope scope)
{
var variable = scope.FindVariable(AsString);
if (variable == null) throw new CompileError("Could not find variable " + AsString);
if (scope.stackDepth - variable.stackOffset > 0)
{
assembly.Add("SET A, SP");
assembly.Add("SET PUSH, [" + hex(scope.stackDepth - variable.stackOffset) + "+A]");
}
else
assembly.Add("SET PUSH, PEEK");
scope.stackDepth += 1;
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
int secondTarget = (int)Register.STACK;
var secondConstant = (ChildNodes[1] as CompilableNode).IsConstant();
var firstConstant = (ChildNodes[0] as CompilableNode).IsConstant();
if (firstConstant && secondConstant)
{
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), hex(GetConstantValue()));
if (target == Register.STACK) scope.stackDepth += 1;
return;
}
if (!secondConstant)
{
secondTarget = scope.FindAndUseFreeRegister();
(ChildNodes[1] as CompilableNode).Compile(assembly, scope, (Register)secondTarget);
}
if (!firstConstant)
(ChildNodes[0] as CompilableNode).Compile(assembly, scope, target);
if (target == Register.STACK)
{
assembly.Add("SET", Scope.TempRegister,
firstConstant ? hex((ChildNodes[0] as CompilableNode).GetConstantValue()) : "POP");
assembly.Add(opcodes[AsString], Scope.TempRegister,
secondConstant ? hex((ChildNodes[1] as CompilableNode).GetConstantValue()) : Scope.GetRegisterLabelSecond(secondTarget));
assembly.Add("SET", "PUSH", Scope.TempRegister);
}
else
{
if (firstConstant)
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), hex((ChildNodes[0] as CompilableNode).GetConstantValue()));
assembly.Add(opcodes[AsString], Scope.GetRegisterLabelFirst((int)target),
secondConstant ? hex((ChildNodes[1] as CompilableNode).GetConstantValue()) : Scope.GetRegisterLabelSecond(secondTarget));
}
if (secondTarget == (int)Register.STACK && !secondConstant)
scope.stackDepth -= 1;
else
scope.FreeMaybeRegister(secondTarget);
}
public override void Compile(List<string> assembly, Scope scope)
{
if (ChildNodes[0] is VariableNameNode)
{
var variable = scope.FindVariable(ChildNodes[0].AsString);
if (variable == null) throw new CompileError("Could not find variable " + ChildNodes[0].AsString);
(ChildNodes[1] as CompilableNode).Compile(assembly, scope);
assembly.Add("SET A, SP");
assembly.Add("SET [" + hex(scope.stackDepth - variable.stackOffset) + "+A], POP");
scope.stackDepth -= 1;
}
else if (ChildNodes[0] is DereferenceNode)
{
(ChildNodes[1] as CompilableNode).Compile(assembly, scope);
(ChildNodes[0].ChildNodes[0] as CompilableNode).Compile(assembly, scope);
assembly.Add("SET A, POP");
assembly.Add("SET [A], POP");
scope.stackDepth -= 2;
}
}
public override void Compile(List<string> assembly, Scope scope)
{
(ChildNodes[0] as CompilableNode).Compile(assembly, scope);
var hasElseBlock = ChildNodes.Count == 3;
var elseBranchLabel = hasElseBlock ? Scope.GetLabel() + "ELSE" : "";
var endLabel = Scope.GetLabel() + "END";
assembly.Add("IFE POP, 0x0");
assembly.Add("SET PC, " + (hasElseBlock ? elseBranchLabel : endLabel));
scope.stackDepth -= 1;
var blockScope = BeginBlock(scope);
(ChildNodes[1] as CompilableNode).Compile(assembly, blockScope);
EndBlock(assembly, blockScope);
if (hasElseBlock)
{
assembly.Add("SET PC, " + endLabel);
assembly.Add(":" + elseBranchLabel);
var elseScope = BeginBlock(scope);
(ChildNodes[2] as CompilableNode).Compile(assembly, elseScope);
EndBlock(assembly, elseScope);
}
assembly.Add(":" + endLabel);
}
public virtual void CompileFunction(Assembly assembly, Scope topscope)
{
Scope lScope;
if (localScope != null)
{
foreach (var variable in topscope.variables)
if (variable.location == Register.STATIC)
localScope.variables.Add(variable);
lScope = localScope.Push(new Scope());
assembly.Add(":" + label, "", "");
}
else
lScope = topscope;
assembly.Barrier();
if (localScope != null) lScope.stackDepth += 1; //account for return address
(ChildNodes[0] as CompilableNode).Compile(assembly, lScope, Register.DISCARD);
if (localScope != null) CompileReturn(assembly, lScope);
else assembly.Add("BRK", "", "");
assembly.Barrier();
//Should leave the return value, if any, in A.
foreach (var function in lScope.pendingFunctions)
function.CompileFunction(assembly, topscope);
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
var destRegister = target == Register.STACK ? scope.FindAndUseFreeRegister() : (int)target;
(ChildNodes[0] as CompilableNode).Compile(assembly, scope, (Register)destRegister);
if (target == Register.STACK)
{
if (destRegister == (int)Register.STACK)
assembly.Add("SET", "PEEK", "[PEEK]");
else
{
assembly.Add("SET", "PUSH", "[" + Scope.GetRegisterLabelSecond(destRegister) + "]");
scope.stackDepth += 1;
scope.FreeMaybeRegister(destRegister);
}
}
else
{
assembly.Add("SET", Scope.GetRegisterLabelFirst((int)target), "[" + Scope.GetRegisterLabelSecond(destRegister) + "]");
if (destRegister == (int)Register.STACK)
scope.stackDepth -= 1;
else if (destRegister != (int)target)
scope.FreeMaybeRegister(destRegister);
}
}
internal void CompileReturn(Assembly assembly, Scope lScope)
{
if (lScope.stackDepth - localScope.stackDepth > 1)
assembly.Add("ADD", "SP", hex(lScope.stackDepth - localScope.stackDepth - 1), "Cleanup stack");
assembly.Add("SET", "PC", "POP", "Return");
}
public override void Compile(Assembly assembly, Scope scope, Register target)
{
scope.pendingFunctions.Add(this);
}
public virtual void Compile(List<String> assembly, Scope scope)
{
throw new NotImplementedException();
}
public static void EndBlock(List<String> assembly, Scope scope)
{
if (scope.stackDepth - scope.parentDepth > 0)
assembly.Add("ADD SP, " + hex(scope.stackDepth - scope.parentDepth) + " ;End block");
}
public static Scope BeginBlock(Scope scope)
{
return scope.Push(new Scope());
}
public virtual void Compile(Assembly assembly, Scope scope, Register target)
{
throw new NotImplementedException();
}
public static void EndBlock(Assembly assembly, Scope scope)
{
if (scope.stackDepth - scope.parentDepth > 0)
assembly.Add("ADD", "SP", hex(scope.stackDepth - scope.parentDepth), "End block");
}