public override void Codegen(CIntermediateLang cil, IndentingStringBuilder sb)
{
cil.DeclareLocalVariable(this);
if (AssigningValue == null)
{
sb.AppendLine(GetDeclaration() + ";");
}
else
{
sb.LineDecl(SourceInfo);
AssigningValue.Codegen(cil, sb);
var tmp = cil.LastUsedVar;
sb.AppendLine(string.Format("{0} = {1};", GetDeclaration(), tmp));
}
}
public override void Codegen(CIntermediateLang cil, IndentingStringBuilder sb)
{
var tmp = cil.CurrentFunction;
cil.CurrentFunction = this;
sb.LineDecl(SourceInfo);
sb.AppendLine(GetDeclaration());
sb.AppendLine("{");
sb.Indent();
cil.PushScope();
foreach (var par in Params)
{
cil.DeclareLocalVariable(par);
}
foreach (var stmt in Body)
{
stmt.Codegen(cil, sb);
}
cil.PopScope();
sb.Dedent();
sb.AppendLine("}");
cil.CurrentFunction = tmp;
}
private CILExpression CreateCtorCall(CIntermediateLang cil)
{
var call = Expression as AstCall;
var ctorId = call?.Callee as AstIdent;
if (ctorId == null)
{
throw new NotImplementedException();
}
var @sizeof = new AstCall(SourceInfo, new AstIdent(SourceInfo, "sizeof"), new List <AstExpression>
{
new AstIdent(SourceInfo, ctorId.Name)
});
var malloc = new AstCall(SourceInfo, new AstIdent(SourceInfo, "alloc"), new List <AstExpression>
{
@sizeof
});
var tmp = NameGenerator.NewTemp();
var tmpType = new AstType(SourceInfo, ctorId.Name, 1, 0, false, false);
var decl = new AstDeclaration(SourceInfo, tmp, tmpType, malloc);
var rewrite = new List <CILNode>();
var cdecl = decl.ToCILVariableDeclAndDecl(cil);
cil.DeclareLocalVariable(cdecl);
rewrite.Add(cdecl);
var ctor = call.FixIdent(cil, string.Format("{0}_{1}", ctorId.Name, "Ctor"));
call.Args.Insert(0, new AstIdent(SourceInfo, decl.Name));
ctorId.Name = ctor;
var ctorCall = call.ToCILExpression(cil);
rewrite.Add(ctorCall);
var objId = new AstIdent(SourceInfo, decl.Name);
rewrite.Add(objId.ToCILExpression(cil));
return(new CILRewriteExpression(SourceInfo, rewrite));
}