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|---|---|---|---|
| 1 | /* Copyright 2025 Jonathan S. Arney | ||
| 2 | * | ||
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| 4 | * you may not use this file except in compliance with the License. | ||
| 5 | * You may obtain a copy of the License at | ||
| 6 | * | ||
| 7 | * https://github.com/jarney/gyoji/blob/master/LICENSE | ||
| 8 | * | ||
| 9 | * Unless required by applicable law or agreed to in writing, software | ||
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, | ||
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| 12 | * See the License for the specific language governing permissions and | ||
| 13 | * limitations under the License. | ||
| 14 | */ | ||
| 15 | #include <gyoji-analysis.hpp> | ||
| 16 | #include <stdio.h> | ||
| 17 | |||
| 18 | using namespace Gyoji::mir; | ||
| 19 | using namespace Gyoji::context; | ||
| 20 | using namespace Gyoji::analysis; | ||
| 21 | |||
| 22 | 28 | AnalysisPassReturnValues::AnalysisPassReturnValues(CompilerContext & _compiler_context) | |
| 23 | 56 | : AnalysisPass(_compiler_context, "return-value consistency analysis") | |
| 24 | 28 | {} | |
| 25 | 112 | AnalysisPassReturnValues::~AnalysisPassReturnValues() | |
| 26 | 112 | {} | |
| 27 | |||
| 28 | void | ||
| 29 | 28 | AnalysisPassReturnValues::check(const Gyoji::mir::MIR & mir) const | |
| 30 | { | ||
| 31 |
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298 | for (const auto & function : mir.get_functions().get_functions()) { |
| 32 | 270 | check(*function); | |
| 33 | } | ||
| 34 | 28 | } | |
| 35 | |||
| 36 | namespace Gyoji::analysis { | ||
| 37 | class ReturnOperationVisitor : public OperationVisitor { | ||
| 38 | public: | ||
| 39 | ReturnOperationVisitor( | ||
| 40 | CompilerContext & _compiler_context, | ||
| 41 | const Function & _function | ||
| 42 | ); | ||
| 43 | ~ReturnOperationVisitor(); | ||
| 44 | |||
| 45 | void visit( | ||
| 46 | size_t block_id, | ||
| 47 | const BasicBlock & block, | ||
| 48 | size_t operation_index, | ||
| 49 | const Operation & operation | ||
| 50 | ); | ||
| 51 | private: | ||
| 52 | CompilerContext & compiler_context; | ||
| 53 | const Function & function; | ||
| 54 | const Type *return_type; | ||
| 55 | }; | ||
| 56 | |||
| 57 | }; | ||
| 58 | |||
| 59 | 270 | ReturnOperationVisitor::ReturnOperationVisitor( | |
| 60 | CompilerContext & _compiler_context, | ||
| 61 | const Function & _function | ||
| 62 | 270 | ) | |
| 63 | : OperationVisitor() | ||
| 64 | 270 | , compiler_context(_compiler_context) | |
| 65 | 270 | , function(_function) | |
| 66 | 270 | , return_type(_function.get_return_type()) | |
| 67 | { | ||
| 68 | 270 | } | |
| 69 | |||
| 70 | 270 | ReturnOperationVisitor::~ReturnOperationVisitor() | |
| 71 | 270 | {} | |
| 72 | |||
| 73 | 4378 | void ReturnOperationVisitor::visit( | |
| 74 | size_t block_id, | ||
| 75 | const BasicBlock & block, | ||
| 76 | size_t operation_index, | ||
| 77 | const Operation & operation | ||
| 78 | ) | ||
| 79 | { | ||
| 80 |
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4378 | if (operation.get_type() == Operation::OP_RETURN) { |
| 81 | 280 | const Type *operation_type = function.tmpvar_get(operation.get_operands().at(0)); | |
| 82 |
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280 | if (return_type->get_name() != operation_type->get_name()) { |
| 83 | ✗ | std::unique_ptr<Gyoji::context::Error> error = std::make_unique<Gyoji::context::Error>("Return statement returns incorrec type."); | |
| 84 | ✗ | error->add_message( | |
| 85 | operation.get_source_ref(), | ||
| 86 | ✗ | std::string("Return statement returns value of type ") + operation_type->get_name() + std::string(" but function is declared to return ") + return_type->get_name() | |
| 87 | ); | ||
| 88 | ✗ | error->add_message( | |
| 89 | ✗ | function.get_source_ref(), | |
| 90 | "Return-value of function declared here." | ||
| 91 | ); | ||
| 92 | ✗ | compiler_context | |
| 93 | ✗ | .get_errors() | |
| 94 | ✗ | .add_error(std::move(error)); | |
| 95 | ✗ | } | |
| 96 | } | ||
| 97 |
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4098 | else if (operation.get_type() == Operation::OP_RETURN_VOID) { |
| 98 |
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8 | if (!return_type->is_void()) { |
| 99 | ✗ | std::unique_ptr<Gyoji::context::Error> error = std::make_unique<Gyoji::context::Error>("Return statement returns incorrec type."); | |
| 100 | ✗ | error->add_message( | |
| 101 | operation.get_source_ref(), | ||
| 102 | ✗ | std::string("Return statement returns void (no value), but function is declared to return ") + return_type->get_name() | |
| 103 | ); | ||
| 104 | ✗ | error->add_message( | |
| 105 | ✗ | function.get_source_ref(), | |
| 106 | "Return-type of function declared here." | ||
| 107 | ); | ||
| 108 | ✗ | compiler_context | |
| 109 | ✗ | .get_errors() | |
| 110 | ✗ | .add_error(std::move(error)); | |
| 111 | ✗ | } | |
| 112 | } | ||
| 113 | 4378 | } | |
| 114 | |||
| 115 | 270 | void AnalysisPassReturnValues::check(const Function & function) const | |
| 116 | { | ||
| 117 | // This is what the function should return. | ||
| 118 | 270 | ReturnOperationVisitor ppVisitor(get_compiler_context(), function); | |
| 119 | |||
| 120 | 270 | function.iterate_operations(ppVisitor); | |
| 121 | 270 | } | |
| 122 | |||
| 123 |