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