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 "eval.h" |
| 18 | |
Shinichiro Hamaji | 861bd64 | 2015-06-19 16:59:13 +0900 | [diff] [blame] | 19 | #include <errno.h> |
Dan Willemsen | 36e5729 | 2017-10-09 11:23:32 -0700 | [diff] [blame] | 20 | #include <pthread.h> |
Shinichiro Hamaji | 861bd64 | 2015-06-19 16:59:13 +0900 | [diff] [blame] | 21 | #include <string.h> |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 22 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 23 | #include "expr.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 24 | #include "file.h" |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 25 | #include "file_cache.h" |
Shinichiro Hamaji | 0e3873a | 2015-07-05 15:48:28 +0900 | [diff] [blame] | 26 | #include "fileutil.h" |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 27 | #include "parser.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 28 | #include "rule.h" |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 29 | #include "stmt.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 30 | #include "strutil.h" |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 31 | #include "symtab.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 32 | #include "var.h" |
| 33 | |
Shinichiro Hamaji | c9b9e5e | 2016-02-18 18:18:54 +0900 | [diff] [blame] | 34 | Evaluator::Evaluator() |
| 35 | : last_rule_(NULL), |
Shinichiro Hamaji | fe00294 | 2015-07-02 03:42:27 +0900 | [diff] [blame] | 36 | current_scope_(NULL), |
Shinichiro Hamaji | 28da237 | 2015-11-30 19:03:53 +0900 | [diff] [blame] | 37 | avoid_io_(false), |
Shinichiro Hamaji | 2941ea0 | 2016-04-27 17:26:21 +0900 | [diff] [blame] | 38 | eval_depth_(0), |
| 39 | posix_sym_(Intern(".POSIX")), |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 40 | is_posix_(false), |
Dan Willemsen | c3f6a97 | 2018-02-27 00:25:01 -0800 | [diff] [blame] | 41 | export_error_(false), |
Dan Willemsen | 36e5729 | 2017-10-09 11:23:32 -0700 | [diff] [blame] | 42 | kati_readonly_(Intern(".KATI_READONLY")) { |
| 43 | #if defined(__APPLE__) |
| 44 | stack_size_ = pthread_get_stacksize_np(pthread_self()); |
| 45 | stack_addr_ = (char*)pthread_get_stackaddr_np(pthread_self()) - stack_size_; |
| 46 | #else |
| 47 | pthread_attr_t attr; |
| 48 | CHECK(pthread_getattr_np(pthread_self(), &attr) == 0); |
| 49 | CHECK(pthread_attr_getstack(&attr, &stack_addr_, &stack_size_) == 0); |
| 50 | CHECK(pthread_attr_destroy(&attr) == 0); |
| 51 | #endif |
| 52 | |
| 53 | lowest_stack_ = (char*)stack_addr_ + stack_size_; |
| 54 | LOG_STAT("Stack size: %zd bytes", stack_size_); |
| 55 | } |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 56 | |
| 57 | Evaluator::~Evaluator() { |
Shinichiro Hamaji | ffc52c3 | 2015-06-23 16:51:07 +0900 | [diff] [blame] | 58 | // delete vars_; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 59 | // for (auto p : rule_vars) { |
| 60 | // delete p.second; |
| 61 | // } |
| 62 | } |
| 63 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 64 | Var* Evaluator::EvalRHS(Symbol lhs, |
| 65 | Value* rhs_v, |
| 66 | StringPiece orig_rhs, |
| 67 | AssignOp op, |
| 68 | bool is_override) { |
| 69 | VarOrigin origin = |
| 70 | ((is_bootstrap_ ? VarOrigin::DEFAULT |
| 71 | : is_commandline_ ? VarOrigin::COMMAND_LINE |
| 72 | : is_override ? VarOrigin::OVERRIDE |
| 73 | : VarOrigin::FILE)); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 74 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 75 | Var* rhs = NULL; |
Dan Willemsen | ff90ea3 | 2017-11-21 13:22:26 -0800 | [diff] [blame] | 76 | Var* prev = NULL; |
Shinichiro Hamaji | 4c469b3 | 2015-06-15 19:53:36 +0900 | [diff] [blame] | 77 | bool needs_assign = true; |
Dan Willemsen | 276e96a | 2017-10-03 14:24:48 -0700 | [diff] [blame] | 78 | |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 79 | switch (op) { |
Shinichiro Hamaji | 90e52ce | 2016-02-10 13:53:41 +0900 | [diff] [blame] | 80 | case AssignOp::COLON_EQ: { |
Dan Willemsen | ff90ea3 | 2017-11-21 13:22:26 -0800 | [diff] [blame] | 81 | prev = PeekVarInCurrentScope(lhs); |
Shinichiro Hamaji | 90e52ce | 2016-02-10 13:53:41 +0900 | [diff] [blame] | 82 | SimpleVar* sv = new SimpleVar(origin); |
| 83 | rhs_v->Eval(this, sv->mutable_value()); |
| 84 | rhs = sv; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 85 | break; |
Shinichiro Hamaji | 90e52ce | 2016-02-10 13:53:41 +0900 | [diff] [blame] | 86 | } |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 87 | case AssignOp::EQ: |
Dan Willemsen | ff90ea3 | 2017-11-21 13:22:26 -0800 | [diff] [blame] | 88 | prev = PeekVarInCurrentScope(lhs); |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 89 | rhs = new RecursiveVar(rhs_v, origin, orig_rhs); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 90 | break; |
| 91 | case AssignOp::PLUS_EQ: { |
Dan Willemsen | ff90ea3 | 2017-11-21 13:22:26 -0800 | [diff] [blame] | 92 | prev = LookupVarInCurrentScope(lhs); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 93 | if (!prev->IsDefined()) { |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 94 | rhs = new RecursiveVar(rhs_v, origin, orig_rhs); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 95 | } else if (prev->ReadOnly()) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 96 | Error(StringPrintf("*** cannot assign to readonly variable: %s", |
| 97 | lhs.c_str())); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 98 | } else { |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 99 | prev->AppendVar(this, rhs_v); |
Shinichiro Hamaji | 4c469b3 | 2015-06-15 19:53:36 +0900 | [diff] [blame] | 100 | rhs = prev; |
| 101 | needs_assign = false; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 102 | } |
| 103 | break; |
| 104 | } |
| 105 | case AssignOp::QUESTION_EQ: { |
Dan Willemsen | ff90ea3 | 2017-11-21 13:22:26 -0800 | [diff] [blame] | 106 | prev = LookupVarInCurrentScope(lhs); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 107 | if (!prev->IsDefined()) { |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 108 | rhs = new RecursiveVar(rhs_v, origin, orig_rhs); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 109 | } else { |
Shinichiro Hamaji | bef3060 | 2015-06-18 17:14:01 +0900 | [diff] [blame] | 110 | rhs = prev; |
| 111 | needs_assign = false; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 112 | } |
| 113 | break; |
| 114 | } |
| 115 | } |
| 116 | |
Dan Willemsen | ff90ea3 | 2017-11-21 13:22:26 -0800 | [diff] [blame] | 117 | if (prev != NULL) { |
| 118 | prev->Used(this, lhs); |
| 119 | if (prev->Deprecated()) { |
| 120 | if (needs_assign) { |
| 121 | rhs->SetDeprecated(prev->DeprecatedMessage()); |
| 122 | } |
Dan Willemsen | 276e96a | 2017-10-03 14:24:48 -0700 | [diff] [blame] | 123 | } |
| 124 | } |
| 125 | |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 126 | LOG("Assign: %s=%s", lhs.c_str(), rhs->DebugString().c_str()); |
Shinichiro Hamaji | ffc52c3 | 2015-06-23 16:51:07 +0900 | [diff] [blame] | 127 | if (needs_assign) { |
| 128 | return rhs; |
| 129 | } |
| 130 | return NULL; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 131 | } |
| 132 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 133 | void Evaluator::EvalAssign(const AssignStmt* stmt) { |
| 134 | loc_ = stmt->loc(); |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 135 | last_rule_ = NULL; |
Shinichiro Hamaji | 92a4738 | 2016-02-17 17:19:21 +0900 | [diff] [blame] | 136 | Symbol lhs = stmt->GetLhsSymbol(this); |
Shinichiro Hamaji | 0d4deb6 | 2015-06-26 07:47:17 +0900 | [diff] [blame] | 137 | if (lhs.empty()) |
| 138 | Error("*** empty variable name."); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 139 | |
| 140 | if (lhs == kati_readonly_) { |
| 141 | string rhs; |
| 142 | stmt->rhs->Eval(this, &rhs); |
| 143 | for (auto const& name : WordScanner(rhs)) { |
| 144 | Var* var = Intern(name).GetGlobalVar(); |
| 145 | if (!var->IsDefined()) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 146 | Error( |
| 147 | StringPrintf("*** unknown variable: %s", name.as_string().c_str())); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 148 | } |
| 149 | var->SetReadOnly(); |
| 150 | } |
| 151 | return; |
| 152 | } |
| 153 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 154 | Var* rhs = EvalRHS(lhs, stmt->rhs, stmt->orig_rhs, stmt->op, |
| 155 | stmt->directive == AssignDirective::OVERRIDE); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 156 | if (rhs) { |
| 157 | bool readonly; |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 158 | lhs.SetGlobalVar(rhs, stmt->directive == AssignDirective::OVERRIDE, |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 159 | &readonly); |
| 160 | if (readonly) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 161 | Error(StringPrintf("*** cannot assign to readonly variable: %s", |
| 162 | lhs.c_str())); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 163 | } |
| 164 | } |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 165 | } |
| 166 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 167 | void Evaluator::EvalRule(const RuleStmt* stmt) { |
| 168 | loc_ = stmt->loc(); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 169 | last_rule_ = NULL; |
| 170 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 171 | const string&& expr = stmt->expr->Eval(this); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 172 | // See semicolon.mk. |
Shinichiro Hamaji | ea54976 | 2015-12-07 14:24:23 +0900 | [diff] [blame] | 173 | if (expr.find_first_not_of(" \t;") == string::npos) { |
| 174 | if (stmt->term == ';') |
| 175 | Error("*** missing rule before commands."); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 176 | return; |
Shinichiro Hamaji | ea54976 | 2015-12-07 14:24:23 +0900 | [diff] [blame] | 177 | } |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 178 | |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 179 | Rule* rule; |
Shinichiro Hamaji | ffc52c3 | 2015-06-23 16:51:07 +0900 | [diff] [blame] | 180 | RuleVarAssignment rule_var; |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 181 | function<string()> after_term_fn = [this, stmt]() { |
Shinichiro Hamaji | c4f7662 | 2016-06-30 13:05:10 +0900 | [diff] [blame] | 182 | return stmt->after_term ? stmt->after_term->Eval(this) : ""; |
| 183 | }; |
| 184 | ParseRule(loc_, expr, stmt->term, after_term_fn, &rule, &rule_var); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 185 | |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 186 | if (rule) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 187 | if (stmt->term == ';') { |
| 188 | rule->cmds.push_back(stmt->after_term); |
Shinichiro Hamaji | 2928f46 | 2015-06-23 20:24:53 +0900 | [diff] [blame] | 189 | } |
| 190 | |
Shinichiro Hamaji | 2941ea0 | 2016-04-27 17:26:21 +0900 | [diff] [blame] | 191 | for (Symbol o : rule->outputs) { |
| 192 | if (o == posix_sym_) |
| 193 | is_posix_ = true; |
| 194 | } |
| 195 | |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 196 | LOG("Rule: %s", rule->DebugString().c_str()); |
Shinichiro Hamaji | 7a2659e | 2016-02-08 14:32:56 +0900 | [diff] [blame] | 197 | rules_.push_back(rule); |
Shinichiro Hamaji | 9b16bda | 2015-06-19 14:25:17 +0900 | [diff] [blame] | 198 | last_rule_ = rule; |
| 199 | return; |
| 200 | } |
| 201 | |
Shinichiro Hamaji | 772ff7f | 2016-02-08 18:33:54 +0900 | [diff] [blame] | 202 | Symbol lhs = Intern(rule_var.lhs); |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 203 | for (Symbol output : rule_var.outputs) { |
Shinichiro Hamaji | 2a04789 | 2015-06-29 13:56:41 +0900 | [diff] [blame] | 204 | auto p = rule_vars_.emplace(output, nullptr); |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 205 | if (p.second) { |
| 206 | p.first->second = new Vars; |
| 207 | } |
| 208 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 209 | Value* rhs = stmt->after_term; |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 210 | if (!rule_var.rhs.empty()) { |
| 211 | Value* lit = NewLiteral(rule_var.rhs); |
| 212 | if (rhs) { |
Shinichiro Hamaji | 5e3e3d2 | 2015-06-24 16:53:44 +0900 | [diff] [blame] | 213 | // TODO: We always insert two whitespaces around the |
| 214 | // terminator. Preserve whitespaces properly. |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 215 | if (stmt->term == ';') { |
Shinichiro Hamaji | 388e858 | 2015-07-03 16:51:46 +0900 | [diff] [blame] | 216 | rhs = NewExpr3(lit, NewLiteral(StringPiece(" ; ")), rhs); |
Shinichiro Hamaji | 5e3e3d2 | 2015-06-24 16:53:44 +0900 | [diff] [blame] | 217 | } else { |
Shinichiro Hamaji | 388e858 | 2015-07-03 16:51:46 +0900 | [diff] [blame] | 218 | rhs = NewExpr3(lit, NewLiteral(StringPiece(" = ")), rhs); |
Shinichiro Hamaji | 5e3e3d2 | 2015-06-24 16:53:44 +0900 | [diff] [blame] | 219 | } |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 220 | } else { |
| 221 | rhs = lit; |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | current_scope_ = p.first->second; |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 226 | |
| 227 | if (lhs == kati_readonly_) { |
| 228 | string rhs_value; |
| 229 | rhs->Eval(this, &rhs_value); |
| 230 | for (auto const& name : WordScanner(rhs_value)) { |
| 231 | Var* var = current_scope_->Lookup(Intern(name)); |
| 232 | if (!var->IsDefined()) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 233 | Error(StringPrintf("*** unknown variable: %s", |
| 234 | name.as_string().c_str())); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 235 | } |
| 236 | var->SetReadOnly(); |
| 237 | } |
| 238 | current_scope_ = NULL; |
| 239 | continue; |
| 240 | } |
| 241 | |
Shinichiro Hamaji | 388e858 | 2015-07-03 16:51:46 +0900 | [diff] [blame] | 242 | Var* rhs_var = EvalRHS(lhs, rhs, StringPiece("*TODO*"), rule_var.op); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 243 | if (rhs_var) { |
| 244 | bool readonly; |
| 245 | current_scope_->Assign(lhs, new RuleVar(rhs_var, rule_var.op), &readonly); |
| 246 | if (readonly) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 247 | Error(StringPrintf("*** cannot assign to readonly variable: %s", |
| 248 | lhs.c_str())); |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 249 | } |
| 250 | } |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 251 | current_scope_ = NULL; |
| 252 | } |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 253 | } |
| 254 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 255 | void Evaluator::EvalCommand(const CommandStmt* stmt) { |
| 256 | loc_ = stmt->loc(); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 257 | |
| 258 | if (!last_rule_) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 259 | vector<Stmt*> stmts; |
| 260 | ParseNotAfterRule(stmt->orig, stmt->loc(), &stmts); |
| 261 | for (Stmt* a : stmts) |
Shinichiro Hamaji | 631a9f8 | 2015-07-05 14:18:15 +0900 | [diff] [blame] | 262 | a->Eval(this); |
| 263 | return; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 264 | } |
| 265 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 266 | last_rule_->cmds.push_back(stmt->expr); |
Shinichiro Hamaji | ff4584d | 2015-06-24 17:45:14 +0900 | [diff] [blame] | 267 | if (last_rule_->cmd_lineno == 0) |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 268 | last_rule_->cmd_lineno = stmt->loc().lineno; |
| 269 | LOG("Command: %s", stmt->expr->DebugString().c_str()); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 270 | } |
| 271 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 272 | void Evaluator::EvalIf(const IfStmt* stmt) { |
| 273 | loc_ = stmt->loc(); |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 274 | |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 275 | bool is_true; |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 276 | switch (stmt->op) { |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 277 | case CondOp::IFDEF: |
| 278 | case CondOp::IFNDEF: { |
Shinichiro Hamaji | 4421dda | 2015-10-21 13:36:50 +0900 | [diff] [blame] | 279 | string var_name; |
| 280 | stmt->lhs->Eval(this, &var_name); |
Shinichiro Hamaji | d236eb0 | 2015-10-27 10:02:15 +0900 | [diff] [blame] | 281 | Symbol lhs = Intern(TrimRightSpace(var_name)); |
| 282 | if (lhs.str().find_first_of(" \t") != string::npos) |
Shinichiro Hamaji | 4421dda | 2015-10-21 13:36:50 +0900 | [diff] [blame] | 283 | Error("*** invalid syntax in conditional."); |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 284 | Var* v = LookupVarInCurrentScope(lhs); |
Shinichiro Hamaji | 52fe6fc | 2016-06-09 16:14:51 +0900 | [diff] [blame] | 285 | is_true = (v->String().empty() == (stmt->op == CondOp::IFNDEF)); |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 286 | break; |
| 287 | } |
| 288 | case CondOp::IFEQ: |
| 289 | case CondOp::IFNEQ: { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 290 | const string&& lhs = stmt->lhs->Eval(this); |
| 291 | const string&& rhs = stmt->rhs->Eval(this); |
| 292 | is_true = ((lhs == rhs) == (stmt->op == CondOp::IFEQ)); |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 293 | break; |
| 294 | } |
| 295 | default: |
| 296 | CHECK(false); |
Shinichiro Hamaji | 8d50301 | 2015-07-03 16:26:15 +0900 | [diff] [blame] | 297 | abort(); |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 298 | } |
| 299 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 300 | const vector<Stmt*>* stmts; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 301 | if (is_true) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 302 | stmts = &stmt->true_stmts; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 303 | } else { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 304 | stmts = &stmt->false_stmts; |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 305 | } |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 306 | for (Stmt* a : *stmts) { |
Shinichiro Hamaji | 6cb1c25 | 2015-06-17 16:22:51 +0900 | [diff] [blame] | 307 | LOG("%s", a->DebugString().c_str()); |
Shinichiro Hamaji | 7e256df | 2015-06-17 15:33:11 +0900 | [diff] [blame] | 308 | a->Eval(this); |
| 309 | } |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 310 | } |
| 311 | |
Shinichiro Hamaji | 0e3873a | 2015-07-05 15:48:28 +0900 | [diff] [blame] | 312 | void Evaluator::DoInclude(const string& fname) { |
Dan Willemsen | 36e5729 | 2017-10-09 11:23:32 -0700 | [diff] [blame] | 313 | CheckStack(); |
| 314 | |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 315 | Makefile* mk = MakefileCacheManager::Get()->ReadMakefile(fname); |
Nick Lewycky | 067e9f1 | 2016-06-22 13:57:25 -0700 | [diff] [blame] | 316 | if (!mk->Exists()) { |
| 317 | Error(StringPrintf("%s does not exist", fname.c_str())); |
| 318 | } |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 319 | |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 320 | Var* var_list = LookupVar(Intern("MAKEFILE_LIST")); |
| 321 | var_list->AppendVar(this, NewLiteral(Intern(TrimLeadingCurdir(fname)).str())); |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 322 | for (Stmt* stmt : mk->stmts()) { |
| 323 | LOG("%s", stmt->DebugString().c_str()); |
| 324 | stmt->Eval(this); |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 325 | } |
| 326 | } |
| 327 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 328 | void Evaluator::EvalInclude(const IncludeStmt* stmt) { |
| 329 | loc_ = stmt->loc(); |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 330 | last_rule_ = NULL; |
| 331 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 332 | const string&& pats = stmt->expr->Eval(this); |
Shinichiro Hamaji | fb415ad | 2015-08-14 17:19:34 +0900 | [diff] [blame] | 333 | for (StringPiece pat : WordScanner(pats)) { |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 334 | ScopedTerminator st(pat); |
Shinichiro Hamaji | 0e3873a | 2015-07-05 15:48:28 +0900 | [diff] [blame] | 335 | vector<string>* files; |
| 336 | Glob(pat.data(), &files); |
| 337 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 338 | if (stmt->should_exist) { |
Shinichiro Hamaji | 0e3873a | 2015-07-05 15:48:28 +0900 | [diff] [blame] | 339 | if (files->empty()) { |
Nick Lewycky | f8dad36 | 2016-06-22 14:22:33 -0700 | [diff] [blame] | 340 | // TODO: Kati does not support building a missing include file. |
Shinichiro Hamaji | 85c74a2 | 2015-09-28 13:54:11 +0900 | [diff] [blame] | 341 | Error(StringPrintf("%s: %s", pat.data(), strerror(errno))); |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 342 | } |
Shinichiro Hamaji | 0e3873a | 2015-07-05 15:48:28 +0900 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | for (const string& fname : *files) { |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 346 | if (!stmt->should_exist && g_flags.ignore_optional_include_pattern && |
Shinichiro Hamaji | 003d06e | 2015-09-09 18:22:04 +0900 | [diff] [blame] | 347 | Pattern(g_flags.ignore_optional_include_pattern).Match(fname)) { |
Stefan Becker | 786881c | 2016-04-08 15:45:16 +0300 | [diff] [blame] | 348 | continue; |
Shinichiro Hamaji | 0e3873a | 2015-07-05 15:48:28 +0900 | [diff] [blame] | 349 | } |
| 350 | DoInclude(fname); |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 351 | } |
| 352 | } |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 353 | } |
| 354 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 355 | void Evaluator::EvalExport(const ExportStmt* stmt) { |
| 356 | loc_ = stmt->loc(); |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 357 | last_rule_ = NULL; |
| 358 | |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 359 | const string&& exports = stmt->expr->Eval(this); |
Shinichiro Hamaji | fb415ad | 2015-08-14 17:19:34 +0900 | [diff] [blame] | 360 | for (StringPiece tok : WordScanner(exports)) { |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 361 | size_t equal_index = tok.find('='); |
Dan Willemsen | c3f6a97 | 2018-02-27 00:25:01 -0800 | [diff] [blame] | 362 | StringPiece lhs; |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 363 | if (equal_index == string::npos) { |
Dan Willemsen | c3f6a97 | 2018-02-27 00:25:01 -0800 | [diff] [blame] | 364 | lhs = tok; |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 365 | } else if (equal_index == 0 || |
| 366 | (equal_index == 1 && |
| 367 | (tok[0] == ':' || tok[0] == '?' || tok[0] == '+'))) { |
| 368 | // Do not export tokens after an assignment. |
| 369 | break; |
| 370 | } else { |
Dan Willemsen | c3f6a97 | 2018-02-27 00:25:01 -0800 | [diff] [blame] | 371 | StringPiece rhs; |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 372 | AssignOp op; |
| 373 | ParseAssignStatement(tok, equal_index, &lhs, &rhs, &op); |
Dan Willemsen | c3f6a97 | 2018-02-27 00:25:01 -0800 | [diff] [blame] | 374 | } |
| 375 | Symbol sym = Intern(lhs); |
| 376 | exports_[sym] = stmt->is_export; |
| 377 | |
| 378 | if (export_message_) { |
| 379 | const char* prefix = ""; |
| 380 | if (!stmt->is_export) { |
| 381 | prefix = "un"; |
| 382 | } |
| 383 | |
| 384 | if (export_error_) { |
| 385 | Error(StringPrintf("*** %s: %sexport is obsolete%s.", sym.c_str(), |
| 386 | prefix, export_message_->c_str())); |
| 387 | } else { |
| 388 | WARN_LOC(loc(), "%s: %sexport has been deprecated%s.", sym.c_str(), |
| 389 | prefix, export_message_->c_str()); |
| 390 | } |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 391 | } |
| 392 | } |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 393 | } |
| 394 | |
Shinichiro Hamaji | 7e70801 | 2015-07-31 13:07:34 +0900 | [diff] [blame] | 395 | Var* Evaluator::LookupVarGlobal(Symbol name) { |
Shinichiro Hamaji | c9b9e5e | 2016-02-18 18:18:54 +0900 | [diff] [blame] | 396 | Var* v = name.GetGlobalVar(); |
Shinichiro Hamaji | 7e70801 | 2015-07-31 13:07:34 +0900 | [diff] [blame] | 397 | if (v->IsDefined()) |
| 398 | return v; |
Shinichiro Hamaji | 7e70801 | 2015-07-31 13:07:34 +0900 | [diff] [blame] | 399 | used_undefined_vars_.insert(name); |
| 400 | return v; |
| 401 | } |
| 402 | |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 403 | Var* Evaluator::LookupVar(Symbol name) { |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 404 | if (current_scope_) { |
| 405 | Var* v = current_scope_->Lookup(name); |
| 406 | if (v->IsDefined()) |
| 407 | return v; |
| 408 | } |
Shinichiro Hamaji | 7e70801 | 2015-07-31 13:07:34 +0900 | [diff] [blame] | 409 | return LookupVarGlobal(name); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 410 | } |
| 411 | |
Dan Willemsen | 7419741 | 2017-12-27 16:50:09 -0800 | [diff] [blame] | 412 | Var* Evaluator::PeekVar(Symbol name) { |
| 413 | if (current_scope_) { |
| 414 | Var* v = current_scope_->Peek(name); |
| 415 | if (v->IsDefined()) |
| 416 | return v; |
| 417 | } |
| 418 | return name.PeekGlobalVar(); |
| 419 | } |
| 420 | |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 421 | Var* Evaluator::LookupVarInCurrentScope(Symbol name) { |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 422 | if (current_scope_) { |
| 423 | return current_scope_->Lookup(name); |
| 424 | } |
Shinichiro Hamaji | 7e70801 | 2015-07-31 13:07:34 +0900 | [diff] [blame] | 425 | return LookupVarGlobal(name); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 426 | } |
| 427 | |
Dan Willemsen | ff90ea3 | 2017-11-21 13:22:26 -0800 | [diff] [blame] | 428 | Var* Evaluator::PeekVarInCurrentScope(Symbol name) { |
| 429 | if (current_scope_) { |
| 430 | return current_scope_->Peek(name); |
| 431 | } |
| 432 | return name.PeekGlobalVar(); |
| 433 | } |
| 434 | |
Shinichiro Hamaji | fb415ad | 2015-08-14 17:19:34 +0900 | [diff] [blame] | 435 | string Evaluator::EvalVar(Symbol name) { |
Shinichiro Hamaji | 94d6f2a | 2015-07-05 05:32:25 +0900 | [diff] [blame] | 436 | return LookupVar(name)->Eval(this); |
| 437 | } |
| 438 | |
Shinichiro Hamaji | 2941ea0 | 2016-04-27 17:26:21 +0900 | [diff] [blame] | 439 | string Evaluator::GetShell() { |
| 440 | return EvalVar(kShellSym); |
| 441 | } |
| 442 | |
| 443 | string Evaluator::GetShellFlag() { |
| 444 | // TODO: Handle $(.SHELLFLAGS) |
| 445 | return is_posix_ ? "-ec" : "-c"; |
| 446 | } |
| 447 | |
| 448 | string Evaluator::GetShellAndFlag() { |
| 449 | string shell = GetShell(); |
| 450 | shell += ' '; |
| 451 | shell += GetShellFlag(); |
| 452 | return shell; |
| 453 | } |
| 454 | |
Shinichiro Hamaji | 9619b36 | 2015-06-16 16:13:25 +0900 | [diff] [blame] | 455 | void Evaluator::Error(const string& msg) { |
Dan Willemsen | e41c755 | 2017-02-22 14:31:16 -0800 | [diff] [blame] | 456 | ERROR_LOC(loc_, "%s", msg.c_str()); |
Shinichiro Hamaji | 9619b36 | 2015-06-16 16:13:25 +0900 | [diff] [blame] | 457 | } |
Shinichiro Hamaji | 7e70801 | 2015-07-31 13:07:34 +0900 | [diff] [blame] | 458 | |
Dan Willemsen | 36e5729 | 2017-10-09 11:23:32 -0700 | [diff] [blame] | 459 | void Evaluator::DumpStackStats() const { |
| 460 | LOG_STAT("Max stack use: %zd bytes at %s:%d", |
| 461 | ((char*)stack_addr_ - (char*)lowest_stack_) + stack_size_, |
| 462 | LOCF(lowest_loc_)); |
| 463 | } |
| 464 | |
Shinichiro Hamaji | 7e70801 | 2015-07-31 13:07:34 +0900 | [diff] [blame] | 465 | unordered_set<Symbol> Evaluator::used_undefined_vars_; |