Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +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 | |
| 15 | // +build ignore |
| 16 | |
| 17 | #include "command.h" |
| 18 | |
| 19 | #include <unordered_map> |
| 20 | #include <unordered_set> |
| 21 | |
| 22 | #include "dep.h" |
| 23 | #include "eval.h" |
Shinichiro Hamaji | b6a0454 | 2015-09-09 17:37:41 +0900 | [diff] [blame] | 24 | #include "flags.h" |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 25 | #include "log.h" |
| 26 | #include "strutil.h" |
| 27 | #include "var.h" |
| 28 | |
| 29 | namespace { |
| 30 | |
| 31 | class AutoVar : public Var { |
| 32 | public: |
| 33 | virtual const char* Flavor() const override { |
| 34 | return "undefined"; |
| 35 | } |
| 36 | virtual VarOrigin Origin() const override { |
| 37 | return VarOrigin::AUTOMATIC; |
| 38 | } |
| 39 | |
| 40 | virtual void AppendVar(Evaluator*, Value*) override { CHECK(false); } |
| 41 | |
| 42 | virtual StringPiece String() const override { |
| 43 | ERROR("$(value %s) is not implemented yet", sym_); |
| 44 | return ""; |
| 45 | } |
| 46 | |
| 47 | virtual string DebugString() const override { |
| 48 | return string("AutoVar(") + sym_ + ")"; |
| 49 | } |
| 50 | |
| 51 | protected: |
| 52 | AutoVar(CommandEvaluator* ce, const char* sym) : ce_(ce), sym_(sym) {} |
| 53 | virtual ~AutoVar() = default; |
| 54 | |
| 55 | CommandEvaluator* ce_; |
| 56 | const char* sym_; |
| 57 | }; |
| 58 | |
| 59 | #define DECLARE_AUTO_VAR_CLASS(name) \ |
| 60 | class name : public AutoVar { \ |
| 61 | public: \ |
| 62 | name(CommandEvaluator* ce, const char* sym) \ |
| 63 | : AutoVar(ce, sym) {} \ |
| 64 | virtual ~name() = default; \ |
| 65 | virtual void Eval(Evaluator* ev, string* s) const override; \ |
| 66 | } |
| 67 | |
| 68 | DECLARE_AUTO_VAR_CLASS(AutoAtVar); |
| 69 | DECLARE_AUTO_VAR_CLASS(AutoLessVar); |
| 70 | DECLARE_AUTO_VAR_CLASS(AutoHatVar); |
| 71 | DECLARE_AUTO_VAR_CLASS(AutoPlusVar); |
| 72 | DECLARE_AUTO_VAR_CLASS(AutoStarVar); |
Shinichiro Hamaji | b552df3 | 2015-12-12 12:37:51 +0900 | [diff] [blame] | 73 | DECLARE_AUTO_VAR_CLASS(AutoNotImplementedVar); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 74 | |
| 75 | class AutoSuffixDVar : public AutoVar { |
| 76 | public: |
| 77 | AutoSuffixDVar(CommandEvaluator* ce, const char* sym, Var* wrapped) |
| 78 | : AutoVar(ce, sym), wrapped_(wrapped) { |
| 79 | } |
| 80 | virtual ~AutoSuffixDVar() = default; |
| 81 | virtual void Eval(Evaluator* ev, string* s) const override; |
| 82 | |
| 83 | private: |
| 84 | Var* wrapped_; |
| 85 | }; |
| 86 | |
| 87 | class AutoSuffixFVar : public AutoVar { |
| 88 | public: |
| 89 | AutoSuffixFVar(CommandEvaluator* ce, const char* sym, Var* wrapped) |
| 90 | : AutoVar(ce, sym), wrapped_(wrapped) {} |
| 91 | virtual ~AutoSuffixFVar() = default; |
| 92 | virtual void Eval(Evaluator* ev, string* s) const override; |
| 93 | |
| 94 | private: |
| 95 | Var* wrapped_; |
| 96 | }; |
| 97 | |
| 98 | void AutoAtVar::Eval(Evaluator*, string* s) const { |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 99 | *s += ce_->current_dep_node()->output.str(); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | void AutoLessVar::Eval(Evaluator*, string* s) const { |
| 103 | auto& ai = ce_->current_dep_node()->actual_inputs; |
| 104 | if (!ai.empty()) |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 105 | *s += ai[0].str(); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | void AutoHatVar::Eval(Evaluator*, string* s) const { |
| 109 | unordered_set<StringPiece> seen; |
| 110 | WordWriter ww(s); |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 111 | for (Symbol ai : ce_->current_dep_node()->actual_inputs) { |
| 112 | if (seen.insert(ai.str()).second) |
| 113 | ww.Write(ai.str()); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 114 | } |
| 115 | } |
| 116 | |
| 117 | void AutoPlusVar::Eval(Evaluator*, string* s) const { |
| 118 | WordWriter ww(s); |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 119 | for (Symbol ai : ce_->current_dep_node()->actual_inputs) { |
| 120 | ww.Write(ai.str()); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 121 | } |
| 122 | } |
| 123 | |
| 124 | void AutoStarVar::Eval(Evaluator*, string* s) const { |
Shinichiro Hamaji | a7984ad | 2015-09-11 16:33:16 +0900 | [diff] [blame] | 125 | const DepNode* n = ce_->current_dep_node(); |
| 126 | if (!n->output_pattern.IsValid()) |
| 127 | return; |
| 128 | Pattern pat(n->output_pattern.str()); |
| 129 | pat.Stem(n->output.str()).AppendToString(s); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 130 | } |
| 131 | |
Shinichiro Hamaji | b91fb6f | 2015-12-18 15:59:13 +0900 | [diff] [blame^] | 132 | void AutoNotImplementedVar::Eval(Evaluator* ev, string*) const { |
| 133 | ev->Error(StringPrintf( |
| 134 | "Automatic variable `$%s' isn't supported yet", sym_)); |
Shinichiro Hamaji | b552df3 | 2015-12-12 12:37:51 +0900 | [diff] [blame] | 135 | } |
| 136 | |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 137 | void AutoSuffixDVar::Eval(Evaluator* ev, string* s) const { |
| 138 | string buf; |
| 139 | wrapped_->Eval(ev, &buf); |
| 140 | WordWriter ww(s); |
| 141 | for (StringPiece tok : WordScanner(buf)) { |
| 142 | ww.Write(Dirname(tok)); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | void AutoSuffixFVar::Eval(Evaluator* ev, string* s) const { |
| 147 | string buf; |
| 148 | wrapped_->Eval(ev, &buf); |
| 149 | WordWriter ww(s); |
| 150 | for (StringPiece tok : WordScanner(buf)) { |
| 151 | ww.Write(Basename(tok)); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | void ParseCommandPrefixes(StringPiece* s, bool* echo, bool* ignore_error) { |
| 156 | *s = TrimLeftSpace(*s); |
| 157 | while (true) { |
| 158 | char c = s->get(0); |
| 159 | if (c == '@') { |
| 160 | *echo = false; |
| 161 | } else if (c == '-') { |
| 162 | *ignore_error = true; |
| 163 | } else { |
| 164 | break; |
| 165 | } |
| 166 | *s = TrimLeftSpace(s->substr(1)); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | } // namespace |
| 171 | |
| 172 | CommandEvaluator::CommandEvaluator(Evaluator* ev) |
| 173 | : ev_(ev) { |
| 174 | Vars* vars = ev_->mutable_vars(); |
| 175 | #define INSERT_AUTO_VAR(name, sym) do { \ |
| 176 | Var* v = new name(this, sym); \ |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 177 | (*vars)[Intern(sym)] = v; \ |
| 178 | (*vars)[Intern(sym"D")] = new AutoSuffixDVar(this, sym"D", v); \ |
| 179 | (*vars)[Intern(sym"F")] = new AutoSuffixFVar(this, sym"F", v); \ |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 180 | } while (0) |
| 181 | INSERT_AUTO_VAR(AutoAtVar, "@"); |
| 182 | INSERT_AUTO_VAR(AutoLessVar, "<"); |
| 183 | INSERT_AUTO_VAR(AutoHatVar, "^"); |
| 184 | INSERT_AUTO_VAR(AutoPlusVar, "+"); |
| 185 | INSERT_AUTO_VAR(AutoStarVar, "*"); |
Shinichiro Hamaji | b552df3 | 2015-12-12 12:37:51 +0900 | [diff] [blame] | 186 | // TODO: Implement them. |
| 187 | INSERT_AUTO_VAR(AutoNotImplementedVar, "%"); |
| 188 | INSERT_AUTO_VAR(AutoNotImplementedVar, "?"); |
| 189 | INSERT_AUTO_VAR(AutoNotImplementedVar, "|"); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | void CommandEvaluator::Eval(DepNode* n, vector<Command*>* commands) { |
Shinichiro Hamaji | 86e1133 | 2015-07-28 15:24:17 +0900 | [diff] [blame] | 193 | ev_->set_loc(n->loc); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 194 | ev_->set_current_scope(n->rule_vars); |
| 195 | current_dep_node_ = n; |
| 196 | for (Value* v : n->cmds) { |
Shinichiro Hamaji | fb415ad | 2015-08-14 17:19:34 +0900 | [diff] [blame] | 197 | const string&& cmds_buf = v->Eval(ev_); |
| 198 | StringPiece cmds = cmds_buf; |
Shinichiro Hamaji | 003d06e | 2015-09-09 18:22:04 +0900 | [diff] [blame] | 199 | bool global_echo = !g_flags.is_silent_mode; |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 200 | bool global_ignore_error = false; |
| 201 | ParseCommandPrefixes(&cmds, &global_echo, &global_ignore_error); |
| 202 | if (cmds == "") |
| 203 | continue; |
| 204 | while (true) { |
| 205 | size_t lf_cnt; |
| 206 | size_t index = FindEndOfLine(cmds, 0, &lf_cnt); |
| 207 | if (index == cmds.size()) |
| 208 | index = string::npos; |
| 209 | StringPiece cmd = TrimLeftSpace(cmds.substr(0, index)); |
| 210 | cmds = cmds.substr(index + 1); |
| 211 | |
| 212 | bool echo = global_echo; |
| 213 | bool ignore_error = global_ignore_error; |
| 214 | ParseCommandPrefixes(&cmd, &echo, &ignore_error); |
| 215 | |
| 216 | if (!cmd.empty()) { |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 217 | Command* command = new Command(n->output); |
Shinichiro Hamaji | fb415ad | 2015-08-14 17:19:34 +0900 | [diff] [blame] | 218 | command->cmd = cmd.as_string(); |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 219 | command->echo = echo; |
| 220 | command->ignore_error = ignore_error; |
| 221 | commands->push_back(command); |
| 222 | } |
| 223 | if (index == string::npos) |
| 224 | break; |
| 225 | } |
| 226 | continue; |
| 227 | } |
Shinichiro Hamaji | 86e1133 | 2015-07-28 15:24:17 +0900 | [diff] [blame] | 228 | |
| 229 | if (!ev_->delayed_output_commands().empty()) { |
| 230 | vector<Command*> output_commands; |
| 231 | for (const string& cmd : ev_->delayed_output_commands()) { |
| 232 | Command* c = new Command(n->output); |
Shinichiro Hamaji | fb415ad | 2015-08-14 17:19:34 +0900 | [diff] [blame] | 233 | c->cmd = cmd; |
Shinichiro Hamaji | 86e1133 | 2015-07-28 15:24:17 +0900 | [diff] [blame] | 234 | c->echo = false; |
| 235 | c->ignore_error = false; |
| 236 | output_commands.push_back(c); |
| 237 | } |
| 238 | // Prepend |output_commands|. |
| 239 | commands->swap(output_commands); |
| 240 | copy(output_commands.begin(), output_commands.end(), |
| 241 | back_inserter(*commands)); |
| 242 | ev_->clear_delayed_output_commands(); |
| 243 | } |
| 244 | |
Shinichiro Hamaji | 5f86e1a | 2015-06-29 14:25:39 +0900 | [diff] [blame] | 245 | ev_->set_current_scope(NULL); |
| 246 | } |