1 /** 2 * Copyright (c) 2021-2022 Huawei Device Co., Ltd. 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 * http://www.apache.org/licenses/LICENSE-2.0 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 16 #ifndef ASSEMBLER_ASSEMBLY_CONTEXT_H 17 #define ASSEMBLER_ASSEMBLY_CONTEXT_H 18 19 #include <string> 20 #include <string_view> 21 #include <unordered_map> 22 #include <vector> 23 24 #include "assembly-ins.h" 25 #include "assembly-type.h" 26 #include "error.h" 27 #include "lexer.h" 28 29 namespace panda::pandasm { 30 31 /* 32 * Used to move around tokens. 33 * *context : 34 * Returns current value of a token 35 * ++context : 36 * sets the next token value 37 * returns current value of a token 38 * context++ : 39 * sets the next token value 40 * returns the next value of a token 41 * similarly --context and context-- 42 */ 43 struct Context { 44 std::string_view token; /* current token */ 45 std::vector<panda::pandasm::Token> tokens; /* token list */ 46 size_t number = 0; /* line number */ 47 bool end = false; /* end of line flag */ 48 Token::Type id = Token::Type::ID_BAD; /* current token type */ 49 Token::Type signop = Token::Type::ID_BAD; /* current token operand type (if it is an operation) */ 50 panda::pandasm::Error err; /* current error */ 51 int64_t *max_value_of_reg = nullptr; 52 size_t ins_number = 0; 53 Type curr_func_return_type; 54 std::vector<std::pair<size_t, size_t>> *function_arguments_list = nullptr; 55 std::unordered_map<std::string, std::vector<std::pair<size_t, size_t>>> function_arguments_lists; 56 57 void Make(const std::vector<panda::pandasm::Token> &t); 58 void UpSignOperation(); 59 bool ValidateRegisterName(char c, size_t n = 0) const; 60 bool ValidateParameterName(size_t number_of_params_already_is) const; 61 bool ValidateLabel(); 62 bool Mask(); 63 bool NextMask(); 64 size_t Len() const; 65 std::string_view GiveToken(); 66 Token::Type WaitFor(); 67 Token::Type Next(); 68 69 Token::Type operator++(int); 70 Token::Type operator--(int); 71 Token::Type operator++(); 72 Token::Type operator--(); 73 Token::Type operator*(); 74 }; 75 76 } // namespace panda::pandasm 77 78 #endif // ASSEMBLER_ASSEMBLY_CONTEXT_H 79