C# AstGenerator.DebugMark方法代码示例

        internal override MSA.Expression/*!*/ TransformRead(AstGenerator/*!*/ gen) {
            Assert.NotNull(gen);

            MSA.Expression transformedBlock = _block.Transform(gen);

            MSA.Expression blockArgVariable = gen.CurrentScope.DefineHiddenVariable("#forloop-block", typeof(Proc));

            MSA.Expression result = CallSiteBuilder.InvokeMethod(gen.Context, "each", RubyCallSignature.WithScopeAndBlock(0),
                gen.CurrentScopeVariable,
                _list.TransformRead(gen),
                blockArgVariable
            );

            return gen.DebugMark(MethodCall.MakeCallWithBlockRetryable(gen, result, blockArgVariable, transformedBlock, true),
                "#RB: method call with a block ('for-loop')");
        }

        internal override MSA.Expression/*!*/ TransformRead(AstGenerator/*!*/ gen) {
            if (gen.CurrentMethod.IsTopLevelCode && gen.CurrentBlock == null && !gen.CompilerOptions.IsEval) {
                return Ast.Throw(Methods.MakeTopLevelSuperException.OpCall());
            }

            // invoke super member action:
            CallBuilder callBuilder = new CallBuilder(gen);

            // self:
            callBuilder.Instance = gen.CurrentSelfVariable;

            // arguments:
            if (Arguments != null) {
                Arguments.TransformToCall(gen, callBuilder);
            } else {
                // copy parameters from the method:
                // TODO: parameters in top-level eval
                LexicalScope.TransformParametersToSuperCall(gen, callBuilder, gen.CurrentMethod.Parameters);
            }

            // block:
            MSA.Expression transformedBlock;
            if (Block != null) {
                transformedBlock = Block.Transform(gen);
            } else {
                transformedBlock = gen.MakeMethodBlockParameterRead();
            }

            // variable assigned to the transformed block in MakeCallWithBlockRetryable:
            MSA.Expression blockArgVariable = gen.CurrentScope.DefineHiddenVariable("#super-call-block", typeof(Proc));
            callBuilder.Block = blockArgVariable;

            // TODO: this could be improved, currently the right method name and declaring module is always searched for at run-time (at the site):

            return gen.DebugMark(
                MethodCall.MakeCallWithBlockRetryable(gen, 
                    callBuilder.MakeSuperCallAction(gen.CurrentFrame.UniqueId), 
                    blockArgVariable, 
                    transformedBlock,
                    Block != null && Block.IsDefinition
                ),
                "#RB: super call ('" + gen.CurrentMethod.MethodName + "')"
            );
        }

        // arguments: complex arguments (expressions, maplets, splat, block) 
        // singleArgument: siple argument (complex are not used)
        // assignmentRhsArgument: rhs of the assignment: target.method=(rhs)
        internal static MSA.Expression/*!*/ TransformRead(Expression/*!*/ node, AstGenerator/*!*/ gen, bool hasImplicitSelf, 
            string/*!*/ methodName, MSA.Expression/*!*/ transformedTarget,
            Arguments arguments, Block block, MSA.Expression singleArgument, MSA.Expression assignmentRhsArgument) {

            Debug.Assert(assignmentRhsArgument == null || block == null, "Block not allowed in assignment");
            Debug.Assert(singleArgument == null || arguments == null && assignmentRhsArgument == null);
            Assert.NotNull(gen, transformedTarget);
            Assert.NotEmpty(methodName);

            // Pass args in this order:
            // 1. instance
            // 2. block (if present)
            // 3. passed args: normal args, maplets, array
            // 4. RHS of assignment (if present)

            MSA.Expression blockArgVariable;
            MSA.Expression transformedBlock;

            if (block != null) {
                blockArgVariable = gen.CurrentScope.DefineHiddenVariable("#block-def", typeof(Proc));
                transformedBlock = block.Transform(gen);
            } else {
                blockArgVariable = transformedBlock = null;
            }

            var siteBuilder = new CallSiteBuilder(gen, transformedTarget, blockArgVariable);

            if (arguments != null) {
                arguments.TransformToCall(gen, siteBuilder);
            } else if (singleArgument != null) {
                siteBuilder.Add(singleArgument);
            }

            MSA.Expression rhsVariable = null;
            if (assignmentRhsArgument != null) {
                rhsVariable = gen.CurrentScope.DefineHiddenVariable("#rhs", assignmentRhsArgument.Type);
                siteBuilder.RhsArgument = Ast.Assign(rhsVariable, assignmentRhsArgument);
            }

            var dynamicSite = siteBuilder.MakeCallAction(methodName, hasImplicitSelf);
#if FEATURE_CALL_SITE_TRACER
            if (gen.Context.CallSiteCreated != null) {
                gen.Context.CallSiteCreated(node, dynamicSite);
            }
#endif

            MSA.Expression result = gen.DebugMark(dynamicSite, methodName);

            if (block != null) {
                result = gen.DebugMark(MakeCallWithBlockRetryable(gen, result, blockArgVariable, transformedBlock, block.IsDefinition),
                    "#RB: method call with a block ('" + methodName + "')");
            }

            if (assignmentRhsArgument != null) {
                result = Ast.Block(result, rhsVariable);
            }

            return result;
        }

        internal override MSA.Expression/*!*/ TransformRead(AstGenerator/*!*/ gen) {
            // variable assigned to the transformed block in MakeCallWithBlockRetryable:
            MSA.Expression blockArgVariable = gen.CurrentScope.DefineHiddenVariable("#super-call-block", typeof(Proc));

            // invoke super member action:
            var siteBuilder = new CallSiteBuilder(gen, gen.CurrentSelfVariable, blockArgVariable);

            // arguments:
            if (HasImplicitArguments) {
                // MRI 1.8: If a block is called via define_method stub its parameters are used here.
                // MRI 1.9: This scenario is not supported.
                // We don't support this either. Otherwise we would need to emit super call with dynamic parameters if gen.CurrentBlock != null.

                if (gen.CurrentMethod.Parameters != null) {
                    gen.CurrentMethod.Parameters.TransformForSuperCall(gen, siteBuilder);
                } else if (gen.CompilerOptions.TopLevelParameterNames != null) {
                    bool hasUnsplat = gen.CompilerOptions.TopLevelHasUnsplatParameter;
                    string[] names = gen.CompilerOptions.TopLevelParameterNames;

                    // dynamic lookup:
                    for (int i = 0; i < names.Length - (hasUnsplat ? 1 : 0); i++) {
                        siteBuilder.Add(Methods.GetLocalVariable.OpCall(gen.CurrentScopeVariable, AstUtils.Constant(names[i])));
                    }
                    if (hasUnsplat) {
                        siteBuilder.SplattedArgument =
                            Methods.GetLocalVariable.OpCall(gen.CurrentScopeVariable, AstUtils.Constant(names[names.Length - 1]));
                    }
                } else {
                    // this means we are not inside any method scope -> an exception will be thrown at the call site
                }
            } else {
                Arguments.TransformToCall(gen, siteBuilder);
            }

            // block:
            MSA.Expression transformedBlock;
            if (Block != null) {
                transformedBlock = Block.Transform(gen);
            } else {
                transformedBlock = gen.MakeMethodBlockParameterRead();
            }
            
            return gen.DebugMark(
                MethodCall.MakeCallWithBlockRetryable(gen,
                    siteBuilder.MakeSuperCallAction(gen.CurrentFrame.UniqueId, HasImplicitArguments), 
                    blockArgVariable, 
                    transformedBlock,
                    Block != null && Block.IsDefinition
                ),
                "#RB: super call ('" + gen.CurrentMethod.MethodName + "')"
            );
        }