/// <summary>
/// Generates ghost method body that calls <c>this</c> method.
/// </summary>
static void GenerateGhostBody(PEModuleBuilder module, DiagnosticBag diagnostic, MethodSymbol method, SynthesizedMethodSymbol ghost)
{
var containingtype = ghost.ContainingType;
var body = MethodGenerator.GenerateMethodBody(module, ghost,
(il) =>
{
// $this
var thisPlace = ghost.HasThis ? new ArgPlace(containingtype, 0) : null;
// Context
var ctxPlace = thisPlace != null && ghost.ContainingType is SourceTypeSymbol sourcetype
? (sourcetype.ContextStore != null ? new FieldPlace(thisPlace, sourcetype.ContextStore, module) : null)
: (IPlace) new ArgPlace(module.Compilation.CoreTypes.Context, 0);
// .callvirt
bool callvirt = ghost.ExplicitOverride != null && ghost.ExplicitOverride.ContainingType.IsInterface; // implementing interface, otherwise we should be able to call specific method impl. non-virtually via ghost
var cg = new CodeGenerator(il, module, diagnostic, module.Compilation.Options.OptimizationLevel, false, containingtype, ctxPlace, thisPlace)
{
DebugRoutine = ghost,
};
// return (T){routine}(p0, ..., pN);
cg.EmitConvert(cg.EmitForwardCall(method, ghost, callvirt: callvirt), 0, ghost.ReturnType);
cg.EmitRet(ghost.ReturnType);
},
null, diagnostic, false);
module.SetMethodBody(ghost, body);
}
/// <summary>
/// Generates ghost method body that calls <c>this</c> method.
/// </summary>
static void GenerateGhostBody(PEModuleBuilder module, DiagnosticBag diagnostic, MethodSymbol method, SynthesizedMethodSymbol ghost)
{
var containingtype = ghost.ContainingType;
var body = MethodGenerator.GenerateMethodBody(module, ghost,
(il) =>
{
// $this
var thisPlace = ghost.HasThis ? new ArgPlace(containingtype, 0) : null;
// Context
var ctxPlace = thisPlace != null && ghost.ContainingType is SourceTypeSymbol sourcetype
? new FieldPlace(thisPlace, sourcetype.ContextStore)
: (IPlace) new ArgPlace(module.Compilation.CoreTypes.Context, 0);
var cg = new CodeGenerator(il, module, diagnostic, module.Compilation.Options.OptimizationLevel, false, containingtype, ctxPlace, thisPlace);
// return (T){routine}(p0, ..., pN);
cg.EmitConvert(cg.EmitForwardCall(method, ghost), 0, ghost.ReturnType);
cg.EmitRet(ghost.ReturnType);
},
null, diagnostic, false);
module.SetMethodBody(ghost, body);
}
internal override void Emit(CodeGenerator cg)
{
cg.EmitSequencePoint(this.PhpSyntax);
var rtype = cg.Routine.ReturnType;
var rvoid = rtype.SpecialType == SpecialType.System_Void;
//
if (this.Returned == null)
{
if (rvoid)
{
// <void>
}
else
{
// <default>
cg.EmitLoadDefault(rtype, cg.Routine.ResultTypeMask);
}
}
else
{
if (rvoid)
{
// <expr>;
cg.EmitPop(this.Returned.Emit(cg));
}
else
{
// return (T)<expr>;
cg.EmitConvert(this.Returned, rtype);
}
}
// .ret
cg.EmitRet(rtype);
}
void EmitInvoke(MethodSymbol invoke, Emit.PEModuleBuilder module)
{
if (invoke == null)
{
return;
}
module.SetMethodBody(invoke, MethodGenerator.GenerateMethodBody(module, invoke, il =>
{
var cg = new CodeGenerator(il, module, DiagnosticBag.GetInstance(), OptimizationLevel.Release, false, this, new ParamPlace(invoke.Parameters[0]), new ArgPlace(this, 0));
//var __invoke = (MethodSymbol)GetMembers(Pchp.Syntax.Name.SpecialMethodNames.Invoke.Value).Single(s => s is MethodSymbol);
// TODO: call __invoke() directly
// context.Call<T>(T, TypeMethods.MagicMethods, params PhpValue[])
var call_t = cg.CoreTypes.Context.Symbol.GetMembers("Call")
.OfType<MethodSymbol>()
.Where(s => s.Arity == 1 && s.ParameterCount == 3 && s.Parameters[2].IsParams)
.Single()
.Construct(this);
// return context.Call<T>(this, __invoke, args)
cg.EmitLoadContext();
cg.EmitThis();
cg.Builder.EmitIntConstant((int)Core.Reflection.TypeMethods.MagicMethods.__invoke);
cg.Builder.EmitLoadArgumentOpcode(2);
cg.EmitCall(ILOpCode.Call, call_t);
cg.EmitRet(invoke.ReturnType);
}, null, DiagnosticBag.GetInstance(), false));
}
void EmitPhpCtor(MethodSymbol ctor, Emit.PEModuleBuilder module)
{
if (ctor == null) return; // static class
Debug.Assert(ctor.MethodKind == MethodKind.Constructor);
module.SetMethodBody(ctor, MethodGenerator.GenerateMethodBody(module, ctor, il =>
{
Debug.Assert(SpecialParameterSymbol.IsContextParameter(ctor.Parameters[0]));
var cg = new CodeGenerator(il, module, DiagnosticBag.GetInstance(), OptimizationLevel.Release, false, this, new ParamPlace(ctor.Parameters[0]), new ArgPlace(this, 0));
// call .phpnew
var phpnew = this.InitializeInstanceMethod;
cg.EmitPop(cg.EmitThisCall(phpnew, ctor));
// call __construct
var phpctor = this.ResolvePhpCtor(true);
cg.EmitPop(cg.EmitThisCall(phpctor, ctor));
Debug.Assert(ctor.ReturnsVoid);
cg.EmitRet(ctor.ReturnType);
}, null, DiagnosticBag.GetInstance(), false));
}
void EmitPhpNew(SynthesizedPhpNewMethodSymbol phpnew, Emit.PEModuleBuilder module)
{
if (phpnew == null) return; // static class
module.SetMethodBody(phpnew, MethodGenerator.GenerateMethodBody(module, phpnew, (Action<Microsoft.CodeAnalysis.CodeGen.ILBuilder>)(il =>
{
Debug.Assert(SpecialParameterSymbol.IsContextParameter(phpnew.Parameters[0]));
var cg = new CodeGenerator(il, module, DiagnosticBag.GetInstance(), OptimizationLevel.Release, false, this, new ParamPlace(phpnew.Parameters[0]), new ArgPlace(this, 0));
// initialize <ctx> field,
// if field is declared within this type
var ctxField = this.ContextStore;
if (ctxField != null && object.ReferenceEquals((object)ctxField.ContainingType, this))
{
var ctxFieldPlace = new FieldPlace(cg.ThisPlaceOpt, (IFieldSymbol)ctxField);
// Debug.Assert(<ctx> != null)
cg.EmitDebugAssertNotNull(cg.ContextPlaceOpt, "Context cannot be null.");
// <this>.<ctx> = <ctx>
ctxFieldPlace.EmitStorePrepare(il);
cg.EmitLoadContext();
ctxFieldPlace.EmitStore(il);
}
// initialize class fields
foreach (var fld in this.GetFieldsToEmit().OfType<SourceFieldSymbol>().Where(fld => !fld.RequiresHolder && !fld.IsStatic && !fld.IsConst))
{
fld.EmitInit(cg);
}
// base..phpnew ?? base..ctor
var basenew = phpnew.BasePhpNew;
Debug.Assert(basenew != null);
cg.EmitPop(cg.EmitThisCall(basenew, phpnew));
Debug.Assert(phpnew.ReturnsVoid);
cg.EmitRet(phpnew.ReturnType);
}), null, DiagnosticBag.GetInstance(), false));
}
/// <summary>
/// Generates ghost method body that calls <c>this</c> method.
/// </summary>
protected void GenerateGhostBody(PEModuleBuilder module, DiagnosticBag diagnostic, SynthesizedMethodSymbol ghost)
{
var body = MethodGenerator.GenerateMethodBody(module, ghost,
(il) =>
{
var cg = new CodeGenerator(il, module, diagnostic, OptimizationLevel.Release, false, this.ContainingType, this.GetContextPlace(), this.GetThisPlace());
// return (T){routine}(p0, ..., pN);
cg.EmitConvert(cg.EmitThisCall(this, ghost), 0, ghost.ReturnType);
cg.EmitRet(ghost.ReturnType);
},
null, diagnostic, false);
module.SetMethodBody(ghost, body);
}
