public Executable Compile()
{
var exe = new Executable(context.MachineInfo);
// Put something at the zero address so we don't get 0 addresses of globals
exe.Globals.Add(new VariableDeclaration("__zero__", CBasicType.SignedInt));
foreach (var tu in tus)
{
exe.Globals.AddRange(tu.Variables);
foreach (var fdecl in tu.Functions)
{
var fexe = exe.Functions.FirstOrDefault(x => x.Name == fdecl.Name);
if (fexe == null)
{
fexe = new CompiledFunction(fdecl.Name, fdecl.FunctionType);
exe.Functions.Add(fexe);
}
var cfexe = fexe as CompiledFunction;
if (cfexe != null && fdecl.Body != null)
{
var c = new FunctionContext(exe, fdecl, cfexe, context);
fdecl.Body.Emit(c);
cfexe.LocalVariables.AddRange(c.LocalVariables);
// Make sure it returns
if (fdecl.Body.Statements.Count == 0 || !fdecl.Body.AlwaysReturns)
{
if (fdecl.FunctionType.ReturnType.IsVoid)
{
c.Emit(OpCode.Return);
}
else
{
context.Report.Error(161, "'" + fdecl.Name + "' not all code paths return a value");
}
}
}
}
}
return(exe);
}
public override void Emit(Instruction instruction)
{
_forward.Emit(instruction);
}
public override void Emit(Instruction instruction)
{
_parent.Emit(instruction);
}