|
public EmitCallMain ( |
||
| mainmethod | Static Main method representing the script global code. | |
| Résultat | TypeSymbol | |
internal override TypeSymbol Emit(CodeGenerator cg)
{
TypeSymbol result;
var isvoid = this.Access.IsNone;
Debug.Assert(_arguments.Length == 1);
Debug.Assert(_arguments[0].Value.Access.IsRead);
Debug.Assert(Access.IsRead || Access.IsNone);
var method = this.Target;
if (method != null) // => IsResolved
{
// emit condition for include_once/require_once
if (IsOnceSemantic)
{
var tscript = method.ContainingType;
result = isvoid
? cg.CoreTypes.Void.Symbol
: cg.DeclaringCompilation.GetTypeFromTypeRef(cg.Routine.TypeRefContext, this.TypeRefMask);
// Template: (<ctx>.CheckIncludeOnce<TScript>()) ? <Main>() : TRUE
// Template<isvoid>: if (<ctx>.CheckIncludeOnce<TScript>()) <Main>()
var falseLabel = new object();
var endLabel = new object();
cg.EmitLoadContext();
cg.EmitCall(ILOpCode.Callvirt, cg.CoreMethods.Context.CheckIncludeOnce_TScript.Symbol.Construct(tscript));
cg.Builder.EmitBranch(ILOpCode.Brfalse, falseLabel);
// ? (PhpValue)<Main>(...)
cg.EmitCallMain(method);
if (isvoid)
{
cg.EmitPop(method.ReturnType);
}
else
{
cg.EmitConvert(method.ReturnType, 0, result);
}
cg.Builder.EmitBranch(ILOpCode.Br, endLabel);
if (!isvoid)
{
cg.Builder.AdjustStack(-1); // workarounds assert in ILBuilder.MarkLabel, we're doing something wrong with ILBuilder
}
// : PhpValue.Create(true)
cg.Builder.MarkLabel(falseLabel);
if (!isvoid)
{
cg.Builder.EmitBoolConstant(true);
cg.EmitConvert(cg.CoreTypes.Boolean, 0, result);
}
//
cg.Builder.MarkLabel(endLabel);
}
else
{
// <Main>
result = cg.EmitCallMain(method);
}
}
else
{
Debug.Assert(cg.LocalsPlaceOpt != null);
// Template: <ctx>.Include(dir, path, locals, @this, bool once = false, bool throwOnError = false)
cg.EmitLoadContext();
cg.Builder.EmitStringConstant(cg.Routine.ContainingFile.DirectoryRelativePath);
cg.EmitConvert(_arguments[0].Value, cg.CoreTypes.String);
cg.LocalsPlaceOpt.EmitLoad(cg.Builder); // scope of local variables, corresponds to $GLOBALS in global scope.
cg.EmitThisOrNull(); // $this
cg.Builder.EmitBoolConstant(IsOnceSemantic);
cg.Builder.EmitBoolConstant(IsRequireSemantic);
return cg.EmitCall(ILOpCode.Callvirt, cg.CoreMethods.Context.Include_string_string_PhpArray_object_bool_bool);
}
//
return result;
}