mirror of
https://gitee.com/openharmony/arkcompiler_runtime_core
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d6f9076f51
Fix codeCheck warnings. Issue: I66QJY Signed-off-by: songqi <songqi32@huawei.com> Change-Id: I879922a718e48df8f44fd83a3f3733a28f11ffdc
122 lines
4.2 KiB
C++
122 lines
4.2 KiB
C++
/**
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ASSEMBLER_LEXER_H
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#define ASSEMBLER_LEXER_H
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#include <array>
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#include <iostream>
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#include <string>
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#include <string_view>
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#include <unordered_map>
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#include <vector>
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#include "define.h"
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#include "error.h"
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#include "isa.h"
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#include "utils/logger.h"
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namespace panda::pandasm {
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struct Token {
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enum class Type {
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ID_BAD = 0,
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/* delimiters */
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DEL_COMMA, /* , */
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DEL_COLON, /* : */
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DEL_BRACE_L, /* { */
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DEL_BRACE_R, /* } */
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DEL_BRACKET_L, /* ( */
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DEL_BRACKET_R, /* ) */
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DEL_SQUARE_BRACKET_L, /* [ */
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DEL_SQUARE_BRACKET_R, /* ] */
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DEL_GT, /* > */
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DEL_LT, /* < */
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DEL_EQ, /* = */
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DEL_DOT, /* . */
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ID, /* other */
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ID_STRING, /* string literal */
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OPERATION, /* special */
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#define OPLIST(inst_code, name, optype, width, flags, dst_idx, src_idxs) ID_OP_##inst_code, /* command type list */
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PANDA_INSTRUCTION_LIST(OPLIST)
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#undef OPLIST
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KEYWORD, /* special */
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#define KEYWORDS(name, inst_code) ID_##inst_code, /* keyword type List */
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KEYWORDS_LIST(KEYWORDS)
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#undef KEYWORDS
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};
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std::string whole_line;
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size_t bound_left; /* right and left bounds of tokens */
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size_t bound_right;
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Type type;
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Token() : Token(0, 0, Type::ID_BAD, "") {}
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Token(size_t b_l, size_t b_r, Type t, std::string beg_of_line)
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: whole_line(std::move(beg_of_line)), bound_left(b_l), bound_right(b_r), type(t)
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{
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}
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};
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using Tokens = std::pair<std::vector<Token>, Error>;
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using TokenSet = const std::vector<std::vector<Token>>;
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struct Line {
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std::vector<Token> tokens;
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std::string buffer; /* Raw line, as read from the file */
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size_t pos; /* current line position */
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size_t end;
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explicit Line(std::string str) : buffer(std::move(str)), pos(0), end(buffer.size()) {}
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};
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class Lexer {
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public:
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Lexer();
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~Lexer();
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NO_MOVE_SEMANTIC(Lexer);
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NO_COPY_SEMANTIC(Lexer);
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/*
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* The main function of Tokenizing, which takes a string.
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* Returns a vector of tokens.
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*/
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Tokens TokenizeString(const std::string &);
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private:
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std::vector<Line> lines_;
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Line *curr_line_;
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Error err_;
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bool Eol() const; /* End of line */
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bool LexString();
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void LexTokens();
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void LexPreprocess();
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void SkipSpace();
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void AnalyzeLine();
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Token::Type LexGetType(size_t beg, size_t end) const;
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};
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/*
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* Returns a string representation of a token type.
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*/
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std::string_view TokenTypeWhat(Token::Type t);
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} // namespace panda::pandasm
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#endif // ASSEMBLER_LEXER_H
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