/// <summary>
/// Stores value from top of the evaluation stack to a temporary variable which will be returned from the exit block.
/// </summary>
internal void EmitTmpRet(CodeGenerator cg, Symbols.TypeSymbol stack)
{
// lazy initialize
if (_retlbl == null)
{
_retlbl = new NamedLabel("<return>");
}
if (_rettmp == null)
{
var rtype = cg.Routine.ReturnType;
if (rtype.SpecialType != SpecialType.System_Void)
{
_rettmp = cg.GetTemporaryLocal(rtype);
}
}
// <rettmp> = <stack>;
if (_rettmp != null)
{
cg.EmitConvert(stack, 0, (Symbols.TypeSymbol)_rettmp.Type);
cg.Builder.EmitLocalStore(_rettmp);
cg.Builder.EmitBranch(ILOpCode.Br, _retlbl);
}
else
{
cg.EmitPop(stack);
}
}
/// <summary>
/// Stores value from top of the evaluation stack to a temporary variable which will be returned from the exit block.
/// </summary>
internal void EmitTmpRet(CodeGenerator cg, TypeSymbol stack)
{
if (_rettmp == null)
{
var rtype = cg.Routine.ReturnType;
if (rtype.SpecialType != SpecialType.System_Void)
{
_rettmp = cg.GetTemporaryLocal(rtype);
}
}
// <rettmp> = <stack>;
if (_rettmp != null)
{
cg.EmitConvert(stack, 0, (TypeSymbol)_rettmp.Type);
cg.Builder.EmitLocalStore(_rettmp);
}
else
{
cg.EmitPop(stack);
}
//
cg.Builder.EmitBranch(ILOpCode.Br, GetReturnLabel());
}
/// <summary>
/// Stores value from top of the evaluation stack to a temporary variable which will be returned from the exit block.
/// </summary>
internal void EmitTmpRet(CodeGenerator cg, TypeSymbol stack, bool yielding)
{
if (_rettmp == null && !cg.Routine.IsGeneratorMethod())
{
var rtype = cg.Routine.ReturnType;
if (rtype.SpecialType != SpecialType.System_Void)
{
_rettmp = cg.GetTemporaryLocal(rtype);
}
}
// <rettmp> = <stack>;
if (_rettmp != null)
{
cg.EmitConvert(stack, 0, (TypeSymbol)_rettmp.Type);
cg.Builder.EmitLocalStore(_rettmp);
}
else
{
cg.EmitPop(stack);
}
//
if (cg.ExtraFinallyBlock != null && !yielding)
{
// state = 1;
// goto _finally;
cg.Builder.EmitIntConstant((int)CodeGenerator.ExtraFinallyState.Return); // 1: return
cg.ExtraFinallyStateVariable.EmitStore();
cg.Builder.EmitBranch(ILOpCode.Br, cg.ExtraFinallyBlock);
return;
}
//
cg.Builder.EmitBranch(ILOpCode.Br, GetReturnLabel());
}
private void InitializeParametersForGeneratorMethod(CodeGenerator cg, Microsoft.CodeAnalysis.CodeGen.ILBuilder il, Microsoft.CodeAnalysis.CodeGen.LocalDefinition generatorsLocals)
{
// Emit init of unoptimized BoundParameters using separate CodeGenerator that has locals place pointing to our generator's locals array
using (var localsArrayCg = new CodeGenerator(
il, cg.Module, cg.Diagnostics,
cg.DeclaringCompilation.Options.OptimizationLevel,
cg.EmitPdbSequencePoints,
this.ContainingType,
contextPlace: null,
thisPlace: null,
routine: this, // needed to support static variables (they need enclosing routine while binding)
locals: new LocalPlace(generatorsLocals),
localsInitialized: false
))
{
// EmitInit (for UnoptimizedLocals) copies arguments to locals array, does nothing for normal variables, handles local statics, global variables ...
LocalsTable.Variables.ForEach(v => v.EmitInit(localsArrayCg));
}
}
/// <summary>
/// Stores value from top of the evaluation stack to a temporary variable which will be returned from the exit block.
/// </summary>
internal void EmitTmpRet(CodeGenerator cg, Symbols.TypeSymbol stack)
{
// lazy initialize
if (_retlbl == null)
{
_retlbl = new object();
}
if (_rettmp == null)
{
var rtype = cg.Routine.ReturnType;
if (rtype.SpecialType != SpecialType.System_Void)
{
_rettmp = cg.GetTemporaryLocal(rtype);
}
}
// <rettmp> = <stack>;
if (_rettmp != null)
{
cg.EmitConvert(stack, 0, (Symbols.TypeSymbol)_rettmp.Type);
cg.Builder.EmitLocalStore(_rettmp);
cg.Builder.EmitBranch(ILOpCode.Br, _retlbl);
}
else
{
cg.EmitPop(stack);
}
}
