Shinichiro Hamaji | 1d545aa | 2015-06-23 15:29:13 +0900 | [diff] [blame] | 1 | // Copyright 2015 Google Inc. All rights reserved |
| 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 | // 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 | |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 15 | // +build ignore |
| 16 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 17 | #include "parser.h" |
| 18 | |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 19 | #include <stack> |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 20 | #include <unordered_map> |
| 21 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 22 | #include "expr.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 23 | #include "file.h" |
| 24 | #include "loc.h" |
| 25 | #include "log.h" |
Shinichiro Hamaji | 6b1a11a | 2015-06-30 16:21:19 +0900 | [diff] [blame] | 26 | #include "stats.h" |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 27 | #include "stmt.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 28 | #include "string_piece.h" |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 29 | #include "strutil.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 30 | |
| 31 | enum struct ParserState { |
| 32 | NOT_AFTER_RULE = 0, |
| 33 | AFTER_RULE, |
| 34 | MAYBE_AFTER_RULE, |
| 35 | }; |
| 36 | |
| 37 | class Parser { |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 38 | struct IfState { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 39 | IfStmt* stmt; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 40 | bool is_in_else; |
| 41 | int num_nest; |
| 42 | }; |
| 43 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 44 | typedef void (Parser::*DirectiveHandler)(StringPiece line, |
| 45 | StringPiece directive); |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 46 | typedef unordered_map<StringPiece, DirectiveHandler> DirectiveMap; |
| 47 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 48 | public: |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 49 | Parser(StringPiece buf, const char* filename, vector<Stmt*>* stmts) |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 50 | : buf_(buf), |
| 51 | state_(ParserState::NOT_AFTER_RULE), |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 52 | stmts_(stmts), |
| 53 | out_stmts_(stmts), |
Shinichiro Hamaji | 390115c | 2016-05-30 18:41:21 +0900 | [diff] [blame] | 54 | num_define_nest_(0), |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 55 | num_if_nest_(0), |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 56 | loc_(filename, 0), |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 57 | fixed_lineno_(false) {} |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 58 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 59 | Parser(StringPiece buf, const Loc& loc, vector<Stmt*>* stmts) |
Shinichiro Hamaji | 80456fb | 2015-06-18 14:56:10 +0900 | [diff] [blame] | 60 | : buf_(buf), |
| 61 | state_(ParserState::NOT_AFTER_RULE), |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 62 | stmts_(stmts), |
| 63 | out_stmts_(stmts), |
Shinichiro Hamaji | 80456fb | 2015-06-18 14:56:10 +0900 | [diff] [blame] | 64 | num_if_nest_(0), |
| 65 | loc_(loc), |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 66 | fixed_lineno_(true) {} |
Shinichiro Hamaji | 80456fb | 2015-06-18 14:56:10 +0900 | [diff] [blame] | 67 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 68 | ~Parser() {} |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 69 | |
| 70 | void Parse() { |
| 71 | l_ = 0; |
| 72 | |
| 73 | for (l_ = 0; l_ < buf_.size();) { |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 74 | size_t lf_cnt = 0; |
| 75 | size_t e = FindEndOfLine(&lf_cnt); |
Shinichiro Hamaji | 8ee8c37 | 2015-06-16 16:19:40 +0900 | [diff] [blame] | 76 | if (!fixed_lineno_) |
Shinichiro Hamaji | b3af68b | 2015-06-24 20:47:57 +0900 | [diff] [blame] | 77 | loc_.lineno++; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 78 | StringPiece line(buf_.data() + l_, e - l_); |
Shinichiro Hamaji | becba50 | 2016-04-12 15:21:08 +0900 | [diff] [blame] | 79 | if (line.get(line.size() - 1) == '\r') |
| 80 | line.remove_suffix(1); |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 81 | orig_line_with_directives_ = line; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 82 | ParseLine(line); |
Shinichiro Hamaji | b3af68b | 2015-06-24 20:47:57 +0900 | [diff] [blame] | 83 | if (!fixed_lineno_) |
| 84 | loc_.lineno += lf_cnt - 1; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 85 | if (e == buf_.size()) |
| 86 | break; |
| 87 | |
| 88 | l_ = e + 1; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 89 | } |
Shinichiro Hamaji | 083fd26 | 2016-04-09 12:28:34 +0900 | [diff] [blame] | 90 | |
| 91 | if (!if_stack_.empty()) |
Dan Willemsen | e41c755 | 2017-02-22 14:31:16 -0800 | [diff] [blame] | 92 | ERROR_LOC(Loc(loc_.filename, loc_.lineno + 1), "*** missing `endif'."); |
Shinichiro Hamaji | 89f6a2b | 2016-04-09 12:32:23 +0900 | [diff] [blame] | 93 | if (!define_name_.empty()) |
Dan Willemsen | e41c755 | 2017-02-22 14:31:16 -0800 | [diff] [blame] | 94 | ERROR_LOC(Loc(loc_.filename, define_start_line_), |
| 95 | "*** missing `endef', unterminated `define'."); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 96 | } |
| 97 | |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 98 | static void Init() { |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 99 | make_directives_ = new DirectiveMap; |
Shinichiro Hamaji | 14b8bea | 2015-06-17 03:14:28 +0900 | [diff] [blame] | 100 | (*make_directives_)["include"] = &Parser::ParseInclude; |
| 101 | (*make_directives_)["-include"] = &Parser::ParseInclude; |
| 102 | (*make_directives_)["sinclude"] = &Parser::ParseInclude; |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 103 | (*make_directives_)["define"] = &Parser::ParseDefine; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 104 | (*make_directives_)["ifdef"] = &Parser::ParseIfdef; |
| 105 | (*make_directives_)["ifndef"] = &Parser::ParseIfdef; |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 106 | (*make_directives_)["ifeq"] = &Parser::ParseIfeq; |
| 107 | (*make_directives_)["ifneq"] = &Parser::ParseIfeq; |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 108 | (*make_directives_)["else"] = &Parser::ParseElse; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 109 | (*make_directives_)["endif"] = &Parser::ParseEndif; |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 110 | (*make_directives_)["override"] = &Parser::ParseOverride; |
| 111 | (*make_directives_)["export"] = &Parser::ParseExport; |
| 112 | (*make_directives_)["unexport"] = &Parser::ParseUnexport; |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 113 | |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 114 | else_if_directives_ = new DirectiveMap; |
| 115 | (*else_if_directives_)["ifdef"] = &Parser::ParseIfdef; |
| 116 | (*else_if_directives_)["ifndef"] = &Parser::ParseIfdef; |
Shinichiro Hamaji | 6aeab2a | 2015-06-26 09:12:01 +0900 | [diff] [blame] | 117 | (*else_if_directives_)["ifeq"] = &Parser::ParseIfeq; |
| 118 | (*else_if_directives_)["ifneq"] = &Parser::ParseIfeq; |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 119 | |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 120 | assign_directives_ = new DirectiveMap; |
| 121 | (*assign_directives_)["define"] = &Parser::ParseDefine; |
| 122 | (*assign_directives_)["export"] = &Parser::ParseExport; |
| 123 | (*assign_directives_)["override"] = &Parser::ParseOverride; |
| 124 | |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 125 | shortest_directive_len_ = 9999; |
| 126 | longest_directive_len_ = 0; |
| 127 | for (auto p : *make_directives_) { |
| 128 | size_t len = p.first.size(); |
| 129 | shortest_directive_len_ = min(len, shortest_directive_len_); |
| 130 | longest_directive_len_ = max(len, longest_directive_len_); |
| 131 | } |
| 132 | } |
| 133 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 134 | static void Quit() { delete make_directives_; } |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 135 | |
Shinichiro Hamaji | 631a9f8 | 2015-07-05 14:18:15 +0900 | [diff] [blame] | 136 | void set_state(ParserState st) { state_ = st; } |
| 137 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 138 | static vector<ParseErrorStmt*> parse_errors; |
Shinichiro Hamaji | a06bee9 | 2015-08-05 17:13:05 +0900 | [diff] [blame] | 139 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 140 | private: |
| 141 | void Error(const string& msg) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 142 | ParseErrorStmt* stmt = new ParseErrorStmt(); |
| 143 | stmt->set_loc(loc_); |
| 144 | stmt->msg = msg; |
| 145 | out_stmts_->push_back(stmt); |
| 146 | parse_errors.push_back(stmt); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | size_t FindEndOfLine(size_t* lf_cnt) { |
Shinichiro Hamaji | 14bb279 | 2015-06-25 18:24:11 +0900 | [diff] [blame] | 150 | return ::FindEndOfLine(buf_, l_, lf_cnt); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 151 | } |
| 152 | |
Shinichiro Hamaji | 36b326f | 2015-06-26 08:56:13 +0900 | [diff] [blame] | 153 | Value* ParseExpr(StringPiece s, ParseExprOpt opt = ParseExprOpt::NORMAL) { |
| 154 | return ::ParseExpr(loc_, s, opt); |
| 155 | } |
| 156 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 157 | void ParseLine(StringPiece line) { |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 158 | if (!define_name_.empty()) { |
| 159 | ParseInsideDefine(line); |
| 160 | return; |
| 161 | } |
| 162 | |
Shinichiro Hamaji | c6ac0b9 | 2015-07-06 16:24:10 +0900 | [diff] [blame] | 163 | if (line.empty() || (line.size() == 1 && line[0] == '\r')) |
| 164 | return; |
| 165 | |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 166 | current_directive_ = AssignDirective::NONE; |
| 167 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 168 | if (line[0] == '\t' && state_ != ParserState::NOT_AFTER_RULE) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 169 | CommandStmt* stmt = new CommandStmt(); |
| 170 | stmt->set_loc(loc_); |
| 171 | stmt->expr = ParseExpr(line.substr(1), ParseExprOpt::COMMAND); |
| 172 | stmt->orig = line; |
| 173 | out_stmts_->push_back(stmt); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 174 | return; |
| 175 | } |
| 176 | |
Shinichiro Hamaji | 3275062 | 2015-06-17 14:57:33 +0900 | [diff] [blame] | 177 | line = TrimLeftSpace(line); |
Shinichiro Hamaji | d4e8193 | 2015-06-17 04:40:45 +0900 | [diff] [blame] | 178 | |
| 179 | if (line[0] == '#') |
| 180 | return; |
| 181 | |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 182 | if (HandleDirective(line, make_directives_)) { |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 183 | return; |
| 184 | } |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 185 | |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 186 | ParseRuleOrAssign(line); |
| 187 | } |
| 188 | |
| 189 | void ParseRuleOrAssign(StringPiece line) { |
Shinichiro Hamaji | 415a9b1 | 2015-07-05 14:33:02 +0900 | [diff] [blame] | 190 | size_t sep = FindThreeOutsideParen(line, ':', '=', ';'); |
| 191 | if (sep == string::npos || line[sep] == ';') { |
| 192 | ParseRule(line, string::npos); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 193 | } else if (line[sep] == '=') { |
Shinichiro Hamaji | 14b8bea | 2015-06-17 03:14:28 +0900 | [diff] [blame] | 194 | ParseAssign(line, sep); |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 195 | } else if (line.get(sep + 1) == '=') { |
| 196 | ParseAssign(line, sep + 1); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 197 | } else if (line[sep] == ':') { |
Shinichiro Hamaji | 14b8bea | 2015-06-17 03:14:28 +0900 | [diff] [blame] | 198 | ParseRule(line, sep); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 199 | } else { |
| 200 | CHECK(false); |
| 201 | } |
| 202 | } |
| 203 | |
Shinichiro Hamaji | 14b8bea | 2015-06-17 03:14:28 +0900 | [diff] [blame] | 204 | void ParseRule(StringPiece line, size_t sep) { |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 205 | if (current_directive_ != AssignDirective::NONE) { |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 206 | if (IsInExport()) |
| 207 | return; |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 208 | if (sep != string::npos) { |
| 209 | sep += orig_line_with_directives_.size() - line.size(); |
| 210 | } |
| 211 | line = orig_line_with_directives_; |
Shinichiro Hamaji | df066c3 | 2015-06-26 09:09:26 +0900 | [diff] [blame] | 212 | } |
| 213 | |
Shinichiro Hamaji | 6aeab2a | 2015-06-26 09:12:01 +0900 | [diff] [blame] | 214 | line = TrimLeftSpace(line); |
Shinichiro Hamaji | df066c3 | 2015-06-26 09:09:26 +0900 | [diff] [blame] | 215 | if (line.empty()) |
| 216 | return; |
| 217 | |
| 218 | if (orig_line_with_directives_[0] == '\t') { |
Shinichiro Hamaji | 2bed770 | 2015-06-26 07:56:28 +0900 | [diff] [blame] | 219 | Error("*** commands commence before first target."); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 220 | return; |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 221 | } |
| 222 | |
Shinichiro Hamaji | 76ff983 | 2015-06-18 17:11:22 +0900 | [diff] [blame] | 223 | const bool is_rule = sep != string::npos && line[sep] == ':'; |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 224 | RuleStmt* stmt = new RuleStmt(); |
| 225 | stmt->set_loc(loc_); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 226 | |
Shinichiro Hamaji | 76ff983 | 2015-06-18 17:11:22 +0900 | [diff] [blame] | 227 | size_t found = FindTwoOutsideParen(line.substr(sep + 1), '=', ';'); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 228 | if (found != string::npos) { |
| 229 | found += sep + 1; |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 230 | stmt->term = line[found]; |
Shinichiro Hamaji | 66bd7bc | 2015-06-19 16:54:06 +0900 | [diff] [blame] | 231 | ParseExprOpt opt = |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 232 | stmt->term == ';' ? ParseExprOpt::COMMAND : ParseExprOpt::NORMAL; |
| 233 | stmt->after_term = ParseExpr(TrimLeftSpace(line.substr(found + 1)), opt); |
| 234 | stmt->expr = ParseExpr(TrimSpace(line.substr(0, found))); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 235 | } else { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 236 | stmt->term = 0; |
| 237 | stmt->after_term = NULL; |
| 238 | stmt->expr = ParseExpr(line); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 239 | } |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 240 | out_stmts_->push_back(stmt); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 241 | state_ = is_rule ? ParserState::AFTER_RULE : ParserState::MAYBE_AFTER_RULE; |
| 242 | } |
| 243 | |
Shinichiro Hamaji | 14b8bea | 2015-06-17 03:14:28 +0900 | [diff] [blame] | 244 | void ParseAssign(StringPiece line, size_t sep) { |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 245 | if (sep == 0) { |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 246 | Error("*** empty variable name ***"); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 247 | return; |
| 248 | } |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 249 | StringPiece lhs; |
| 250 | StringPiece rhs; |
| 251 | AssignOp op; |
| 252 | ParseAssignStatement(line, sep, &lhs, &rhs, &op); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 253 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 254 | AssignStmt* stmt = new AssignStmt(); |
| 255 | stmt->set_loc(loc_); |
| 256 | stmt->lhs = ParseExpr(lhs); |
| 257 | stmt->rhs = ParseExpr(rhs); |
| 258 | stmt->orig_rhs = rhs; |
| 259 | stmt->op = op; |
| 260 | stmt->directive = current_directive_; |
| 261 | out_stmts_->push_back(stmt); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 262 | state_ = ParserState::NOT_AFTER_RULE; |
| 263 | } |
| 264 | |
Shinichiro Hamaji | 14b8bea | 2015-06-17 03:14:28 +0900 | [diff] [blame] | 265 | void ParseInclude(StringPiece line, StringPiece directive) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 266 | IncludeStmt* stmt = new IncludeStmt(); |
| 267 | stmt->set_loc(loc_); |
| 268 | stmt->expr = ParseExpr(line); |
| 269 | stmt->should_exist = directive[0] == 'i'; |
| 270 | out_stmts_->push_back(stmt); |
Shinichiro Hamaji | ff4584d | 2015-06-24 17:45:14 +0900 | [diff] [blame] | 271 | state_ = ParserState::NOT_AFTER_RULE; |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 272 | } |
| 273 | |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 274 | void ParseDefine(StringPiece line, StringPiece) { |
| 275 | if (line.empty()) { |
| 276 | Error("*** empty variable name."); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 277 | return; |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 278 | } |
| 279 | define_name_ = line; |
Shinichiro Hamaji | 390115c | 2016-05-30 18:41:21 +0900 | [diff] [blame] | 280 | num_define_nest_ = 1; |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 281 | define_start_ = 0; |
| 282 | define_start_line_ = loc_.lineno; |
Shinichiro Hamaji | ff4584d | 2015-06-24 17:45:14 +0900 | [diff] [blame] | 283 | state_ = ParserState::NOT_AFTER_RULE; |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | void ParseInsideDefine(StringPiece line) { |
Shinichiro Hamaji | 5562caf | 2015-06-17 17:08:40 +0900 | [diff] [blame] | 287 | line = TrimLeftSpace(line); |
Shinichiro Hamaji | 390115c | 2016-05-30 18:41:21 +0900 | [diff] [blame] | 288 | StringPiece directive = GetDirective(line); |
| 289 | if (directive == "define") |
| 290 | num_define_nest_++; |
| 291 | else if (directive == "endef") |
| 292 | num_define_nest_--; |
| 293 | if (num_define_nest_ > 0) { |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 294 | if (define_start_ == 0) |
| 295 | define_start_ = l_; |
| 296 | return; |
| 297 | } |
| 298 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 299 | StringPiece rest = TrimRightSpace( |
| 300 | RemoveComment(TrimLeftSpace(line.substr(sizeof("endef"))))); |
Shinichiro Hamaji | 5562caf | 2015-06-17 17:08:40 +0900 | [diff] [blame] | 301 | if (!rest.empty()) { |
Dan Willemsen | e41c755 | 2017-02-22 14:31:16 -0800 | [diff] [blame] | 302 | WARN_LOC(loc_, "extraneous text after `endef' directive"); |
Shinichiro Hamaji | 5562caf | 2015-06-17 17:08:40 +0900 | [diff] [blame] | 303 | } |
| 304 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 305 | AssignStmt* stmt = new AssignStmt(); |
| 306 | stmt->set_loc(Loc(loc_.filename, define_start_line_)); |
| 307 | stmt->lhs = ParseExpr(define_name_); |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 308 | StringPiece rhs; |
| 309 | if (define_start_) |
Shinichiro Hamaji | a4d0ecb | 2015-06-24 22:08:30 +0900 | [diff] [blame] | 310 | rhs = buf_.substr(define_start_, l_ - define_start_ - 1); |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 311 | stmt->rhs = ParseExpr(rhs, ParseExprOpt::DEFINE); |
| 312 | stmt->orig_rhs = rhs; |
| 313 | stmt->op = AssignOp::EQ; |
| 314 | stmt->directive = current_directive_; |
| 315 | out_stmts_->push_back(stmt); |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 316 | define_name_.clear(); |
| 317 | } |
| 318 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 319 | void EnterIf(IfStmt* stmt) { |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 320 | IfState* st = new IfState(); |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 321 | st->stmt = stmt; |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 322 | st->is_in_else = false; |
| 323 | st->num_nest = num_if_nest_; |
| 324 | if_stack_.push(st); |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 325 | out_stmts_ = &stmt->true_stmts; |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 326 | } |
| 327 | |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 328 | void ParseIfdef(StringPiece line, StringPiece directive) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 329 | IfStmt* stmt = new IfStmt(); |
| 330 | stmt->set_loc(loc_); |
| 331 | stmt->op = directive[2] == 'n' ? CondOp::IFNDEF : CondOp::IFDEF; |
| 332 | stmt->lhs = ParseExpr(line); |
| 333 | stmt->rhs = NULL; |
| 334 | out_stmts_->push_back(stmt); |
| 335 | EnterIf(stmt); |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 336 | } |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 337 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 338 | bool ParseIfEqCond(StringPiece s, IfStmt* stmt) { |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 339 | if (s.empty()) { |
| 340 | return false; |
| 341 | } |
| 342 | |
| 343 | if (s[0] == '(' && s[s.size() - 1] == ')') { |
| 344 | s = s.substr(1, s.size() - 2); |
| 345 | char terms[] = {',', '\0'}; |
| 346 | size_t n; |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 347 | stmt->lhs = ParseExprImpl(loc_, s, terms, ParseExprOpt::NORMAL, &n, true); |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 348 | if (s[n] != ',') |
| 349 | return false; |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 350 | s = TrimLeftSpace(s.substr(n + 1)); |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 351 | stmt->rhs = ParseExprImpl(loc_, s, NULL, ParseExprOpt::NORMAL, &n); |
Shinichiro Hamaji | adeea69 | 2015-06-17 17:57:31 +0900 | [diff] [blame] | 352 | s = TrimLeftSpace(s.substr(n)); |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 353 | } else { |
| 354 | for (int i = 0; i < 2; i++) { |
| 355 | if (s.empty()) |
| 356 | return false; |
| 357 | char quote = s[0]; |
| 358 | if (quote != '\'' && quote != '"') |
| 359 | return false; |
| 360 | size_t end = s.find(quote, 1); |
| 361 | if (end == string::npos) |
| 362 | return false; |
Shinichiro Hamaji | 66bd7bc | 2015-06-19 16:54:06 +0900 | [diff] [blame] | 363 | Value* v = ParseExpr(s.substr(1, end - 1), ParseExprOpt::NORMAL); |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 364 | if (i == 0) |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 365 | stmt->lhs = v; |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 366 | else |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 367 | stmt->rhs = v; |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 368 | s = TrimLeftSpace(s.substr(end + 1)); |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 369 | } |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 370 | } |
Shinichiro Hamaji | adeea69 | 2015-06-17 17:57:31 +0900 | [diff] [blame] | 371 | if (!s.empty()) { |
Dan Willemsen | e41c755 | 2017-02-22 14:31:16 -0800 | [diff] [blame] | 372 | WARN_LOC(loc_, "extraneous text after `ifeq' directive"); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 373 | return true; |
Shinichiro Hamaji | adeea69 | 2015-06-17 17:57:31 +0900 | [diff] [blame] | 374 | } |
| 375 | return true; |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | void ParseIfeq(StringPiece line, StringPiece directive) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 379 | IfStmt* stmt = new IfStmt(); |
| 380 | stmt->set_loc(loc_); |
| 381 | stmt->op = directive[2] == 'n' ? CondOp::IFNEQ : CondOp::IFEQ; |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 382 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 383 | if (!ParseIfEqCond(line, stmt)) { |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 384 | Error("*** invalid syntax in conditional."); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 385 | return; |
Shinichiro Hamaji | d146f4c | 2015-06-17 17:51:24 +0900 | [diff] [blame] | 386 | } |
| 387 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 388 | out_stmts_->push_back(stmt); |
| 389 | EnterIf(stmt); |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 390 | } |
| 391 | |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 392 | void ParseElse(StringPiece line, StringPiece) { |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 393 | if (!CheckIfStack("else")) |
| 394 | return; |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 395 | IfState* st = if_stack_.top(); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 396 | if (st->is_in_else) { |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 397 | Error("*** only one `else' per conditional."); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 398 | return; |
| 399 | } |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 400 | st->is_in_else = true; |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 401 | out_stmts_ = &st->stmt->false_stmts; |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 402 | |
| 403 | StringPiece next_if = TrimLeftSpace(line); |
| 404 | if (next_if.empty()) |
| 405 | return; |
| 406 | |
| 407 | num_if_nest_ = st->num_nest + 1; |
| 408 | if (!HandleDirective(next_if, else_if_directives_)) { |
Dan Willemsen | e41c755 | 2017-02-22 14:31:16 -0800 | [diff] [blame] | 409 | WARN_LOC(loc_, "extraneous text after `else' directive"); |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 410 | } |
| 411 | num_if_nest_ = 0; |
| 412 | } |
| 413 | |
| 414 | void ParseEndif(StringPiece line, StringPiece) { |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 415 | if (!CheckIfStack("endif")) |
| 416 | return; |
| 417 | if (!line.empty()) { |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 418 | Error("extraneous text after `endif` directive"); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 419 | return; |
| 420 | } |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 421 | IfState st = *if_stack_.top(); |
| 422 | for (int t = 0; t <= st.num_nest; t++) { |
| 423 | delete if_stack_.top(); |
| 424 | if_stack_.pop(); |
| 425 | if (if_stack_.empty()) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 426 | out_stmts_ = stmts_; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 427 | } else { |
| 428 | IfState* st = if_stack_.top(); |
| 429 | if (st->is_in_else) |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 430 | out_stmts_ = &st->stmt->false_stmts; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 431 | else |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 432 | out_stmts_ = &st->stmt->true_stmts; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 433 | } |
| 434 | } |
| 435 | } |
| 436 | |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 437 | bool IsInExport() const { |
| 438 | return (static_cast<int>(current_directive_) & |
| 439 | static_cast<int>(AssignDirective::EXPORT)); |
| 440 | } |
| 441 | |
| 442 | void CreateExport(StringPiece line, bool is_export) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 443 | ExportStmt* stmt = new ExportStmt; |
| 444 | stmt->set_loc(loc_); |
| 445 | stmt->expr = ParseExpr(line); |
| 446 | stmt->is_export = is_export; |
| 447 | out_stmts_->push_back(stmt); |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 448 | } |
| 449 | |
| 450 | void ParseOverride(StringPiece line, StringPiece) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 451 | current_directive_ = static_cast<AssignDirective>( |
| 452 | (static_cast<int>(current_directive_) | |
| 453 | static_cast<int>(AssignDirective::OVERRIDE))); |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 454 | if (HandleDirective(line, assign_directives_)) |
| 455 | return; |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 456 | if (IsInExport()) { |
| 457 | CreateExport(line, true); |
| 458 | } |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 459 | ParseRuleOrAssign(line); |
| 460 | } |
| 461 | |
| 462 | void ParseExport(StringPiece line, StringPiece) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 463 | current_directive_ = static_cast<AssignDirective>( |
| 464 | (static_cast<int>(current_directive_) | |
| 465 | static_cast<int>(AssignDirective::EXPORT))); |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 466 | if (HandleDirective(line, assign_directives_)) |
| 467 | return; |
| 468 | CreateExport(line, true); |
| 469 | ParseRuleOrAssign(line); |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 470 | } |
| 471 | |
| 472 | void ParseUnexport(StringPiece line, StringPiece) { |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 473 | CreateExport(line, false); |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 474 | } |
| 475 | |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 476 | bool CheckIfStack(const char* keyword) { |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 477 | if (if_stack_.empty()) { |
| 478 | Error(StringPrintf("*** extraneous `%s'.", keyword)); |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 479 | return false; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 480 | } |
Shinichiro Hamaji | 5622786 | 2015-08-05 16:53:37 +0900 | [diff] [blame] | 481 | return true; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 482 | } |
| 483 | |
Shinichiro Hamaji | 5562caf | 2015-06-17 17:08:40 +0900 | [diff] [blame] | 484 | StringPiece RemoveComment(StringPiece line) { |
Shinichiro Hamaji | eafd052 | 2015-06-18 16:46:02 +0900 | [diff] [blame] | 485 | size_t i = FindOutsideParen(line, '#'); |
| 486 | if (i == string::npos) |
| 487 | return line; |
| 488 | return line.substr(0, i); |
Shinichiro Hamaji | 5562caf | 2015-06-17 17:08:40 +0900 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | StringPiece GetDirective(StringPiece line) { |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 492 | if (line.size() < shortest_directive_len_) |
Shinichiro Hamaji | 5562caf | 2015-06-17 17:08:40 +0900 | [diff] [blame] | 493 | return StringPiece(); |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 494 | StringPiece prefix = line.substr(0, longest_directive_len_ + 1); |
Shinichiro Hamaji | 5562caf | 2015-06-17 17:08:40 +0900 | [diff] [blame] | 495 | size_t space_index = prefix.find_first_of(" \t#"); |
| 496 | return prefix.substr(0, space_index); |
| 497 | } |
| 498 | |
| 499 | bool HandleDirective(StringPiece line, const DirectiveMap* directive_map) { |
| 500 | StringPiece directive = GetDirective(line); |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 501 | auto found = directive_map->find(directive); |
| 502 | if (found == directive_map->end()) |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 503 | return false; |
| 504 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 505 | StringPiece rest = TrimRightSpace( |
| 506 | RemoveComment(TrimLeftSpace(line.substr(directive.size())))); |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 507 | (this->*found->second)(rest, directive); |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 508 | return true; |
| 509 | } |
| 510 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 511 | StringPiece buf_; |
| 512 | size_t l_; |
| 513 | ParserState state_; |
| 514 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 515 | vector<Stmt*>* stmts_; |
| 516 | vector<Stmt*>* out_stmts_; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 517 | |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 518 | StringPiece define_name_; |
Shinichiro Hamaji | 390115c | 2016-05-30 18:41:21 +0900 | [diff] [blame] | 519 | int num_define_nest_; |
Shinichiro Hamaji | 810fd03 | 2015-06-17 04:38:03 +0900 | [diff] [blame] | 520 | size_t define_start_; |
| 521 | int define_start_line_; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 522 | |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 523 | StringPiece orig_line_with_directives_; |
| 524 | AssignDirective current_directive_; |
| 525 | |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 526 | int num_if_nest_; |
| 527 | stack<IfState*> if_stack_; |
| 528 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 529 | Loc loc_; |
| 530 | bool fixed_lineno_; |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 531 | |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 532 | static DirectiveMap* make_directives_; |
| 533 | static DirectiveMap* else_if_directives_; |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 534 | static DirectiveMap* assign_directives_; |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 535 | static size_t shortest_directive_len_; |
| 536 | static size_t longest_directive_len_; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 537 | }; |
| 538 | |
| 539 | void Parse(Makefile* mk) { |
Shinichiro Hamaji | 6b1a11a | 2015-06-30 16:21:19 +0900 | [diff] [blame] | 540 | COLLECT_STATS("parse file time"); |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 541 | Parser parser(StringPiece(mk->buf()), mk->filename().c_str(), |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 542 | mk->mutable_stmts()); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 543 | parser.Parse(); |
| 544 | } |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 545 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 546 | void Parse(StringPiece buf, const Loc& loc, vector<Stmt*>* out_stmts) { |
Shinichiro Hamaji | 6b1a11a | 2015-06-30 16:21:19 +0900 | [diff] [blame] | 547 | COLLECT_STATS("parse eval time"); |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 548 | Parser parser(buf, loc, out_stmts); |
Shinichiro Hamaji | 80456fb | 2015-06-18 14:56:10 +0900 | [diff] [blame] | 549 | parser.Parse(); |
| 550 | } |
| 551 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 552 | void ParseNotAfterRule(StringPiece buf, |
| 553 | const Loc& loc, |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 554 | vector<Stmt*>* out_stmts) { |
| 555 | Parser parser(buf, loc, out_stmts); |
Shinichiro Hamaji | 631a9f8 | 2015-07-05 14:18:15 +0900 | [diff] [blame] | 556 | parser.set_state(ParserState::NOT_AFTER_RULE); |
| 557 | parser.Parse(); |
| 558 | } |
| 559 | |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 560 | void InitParser() { |
| 561 | Parser::Init(); |
| 562 | } |
| 563 | |
| 564 | void QuitParser() { |
| 565 | Parser::Quit(); |
| 566 | } |
| 567 | |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 568 | Parser::DirectiveMap* Parser::make_directives_; |
| 569 | Parser::DirectiveMap* Parser::else_if_directives_; |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 570 | Parser::DirectiveMap* Parser::assign_directives_; |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 571 | size_t Parser::shortest_directive_len_; |
| 572 | size_t Parser::longest_directive_len_; |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 573 | vector<ParseErrorStmt*> Parser::parse_errors; |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 574 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 575 | void ParseAssignStatement(StringPiece line, |
| 576 | size_t sep, |
| 577 | StringPiece* lhs, |
| 578 | StringPiece* rhs, |
| 579 | AssignOp* op) { |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 580 | CHECK(sep != 0); |
| 581 | *op = AssignOp::EQ; |
| 582 | size_t lhs_end = sep; |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 583 | switch (line[sep - 1]) { |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 584 | case ':': |
| 585 | lhs_end--; |
| 586 | *op = AssignOp::COLON_EQ; |
| 587 | break; |
| 588 | case '+': |
| 589 | lhs_end--; |
| 590 | *op = AssignOp::PLUS_EQ; |
| 591 | break; |
| 592 | case '?': |
| 593 | lhs_end--; |
| 594 | *op = AssignOp::QUESTION_EQ; |
| 595 | break; |
| 596 | } |
| 597 | *lhs = TrimSpace(line.substr(0, lhs_end)); |
Shinichiro Hamaji | 748969f | 2015-10-27 10:10:26 +0900 | [diff] [blame] | 598 | *rhs = TrimLeftSpace(line.substr(sep + 1)); |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 599 | } |
Shinichiro Hamaji | a06bee9 | 2015-08-05 17:13:05 +0900 | [diff] [blame] | 600 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 601 | const vector<ParseErrorStmt*>& GetParseErrors() { |
Shinichiro Hamaji | a06bee9 | 2015-08-05 17:13:05 +0900 | [diff] [blame] | 602 | return Parser::parse_errors; |
| 603 | } |