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 "var.h" |
| 18 | |
Dan Willemsen | 276e96a | 2017-10-03 14:24:48 -0700 | [diff] [blame] | 19 | #include "eval.h" |
Shinichiro Hamaji | 645cca7 | 2015-09-24 17:04:21 +0900 | [diff] [blame] | 20 | #include "expr.h" |
Shinichiro Hamaji | 4c469b3 | 2015-06-15 19:53:36 +0900 | [diff] [blame] | 21 | #include "log.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 22 | |
| 23 | UndefinedVar kUndefinedBuf; |
| 24 | UndefinedVar* kUndefined = &kUndefinedBuf; |
| 25 | |
Shinichiro Hamaji | f62e9a7 | 2015-06-26 04:18:21 +0900 | [diff] [blame] | 26 | const char* GetOriginStr(VarOrigin origin) { |
| 27 | switch (origin) { |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 28 | case VarOrigin::UNDEFINED: |
| 29 | return "undefined"; |
| 30 | case VarOrigin::DEFAULT: |
| 31 | return "default"; |
| 32 | case VarOrigin::ENVIRONMENT: |
| 33 | return "environment"; |
| 34 | case VarOrigin::ENVIRONMENT_OVERRIDE: |
| 35 | return "environment override"; |
| 36 | case VarOrigin::FILE: |
| 37 | return "file"; |
| 38 | case VarOrigin::COMMAND_LINE: |
| 39 | return "command line"; |
| 40 | case VarOrigin::OVERRIDE: |
| 41 | return "override"; |
| 42 | case VarOrigin::AUTOMATIC: |
| 43 | return "automatic"; |
Shinichiro Hamaji | f62e9a7 | 2015-06-26 04:18:21 +0900 | [diff] [blame] | 44 | } |
| 45 | CHECK(false); |
| 46 | return "*** broken origin ***"; |
| 47 | } |
| 48 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 49 | Var::Var() : readonly_(false), message_(), error_(false) {} |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 50 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 51 | Var::~Var() {} |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 52 | |
Shinichiro Hamaji | 4c469b3 | 2015-06-15 19:53:36 +0900 | [diff] [blame] | 53 | void Var::AppendVar(Evaluator*, Value*) { |
| 54 | CHECK(false); |
| 55 | } |
| 56 | |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 57 | SimpleVar::SimpleVar(VarOrigin origin) : origin_(origin) {} |
Shinichiro Hamaji | 90e52ce | 2016-02-10 13:53:41 +0900 | [diff] [blame] | 58 | |
Shinichiro Hamaji | 5081c71 | 2015-08-14 16:49:20 +0900 | [diff] [blame] | 59 | SimpleVar::SimpleVar(const string& v, VarOrigin origin) |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 60 | : v_(v), origin_(origin) {} |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 61 | |
Dan Willemsen | 36e5729 | 2017-10-09 11:23:32 -0700 | [diff] [blame^] | 62 | void SimpleVar::Eval(Evaluator* ev, string* s) const { |
| 63 | ev->CheckStack(); |
Shinichiro Hamaji | 5081c71 | 2015-08-14 16:49:20 +0900 | [diff] [blame] | 64 | *s += v_; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 65 | } |
| 66 | |
Shinichiro Hamaji | 4c469b3 | 2015-06-15 19:53:36 +0900 | [diff] [blame] | 67 | void SimpleVar::AppendVar(Evaluator* ev, Value* v) { |
Shinichiro Hamaji | e6a4d17 | 2016-03-10 14:47:34 +0900 | [diff] [blame] | 68 | string buf; |
| 69 | v->Eval(ev, &buf); |
Shinichiro Hamaji | 5081c71 | 2015-08-14 16:49:20 +0900 | [diff] [blame] | 70 | v_.push_back(' '); |
Shinichiro Hamaji | e6a4d17 | 2016-03-10 14:47:34 +0900 | [diff] [blame] | 71 | v_ += buf; |
Shinichiro Hamaji | 4c469b3 | 2015-06-15 19:53:36 +0900 | [diff] [blame] | 72 | } |
| 73 | |
Shinichiro Hamaji | 81699be | 2015-06-22 18:07:38 +0900 | [diff] [blame] | 74 | StringPiece SimpleVar::String() const { |
Shinichiro Hamaji | 5081c71 | 2015-08-14 16:49:20 +0900 | [diff] [blame] | 75 | return v_; |
Shinichiro Hamaji | 81699be | 2015-06-22 18:07:38 +0900 | [diff] [blame] | 76 | } |
| 77 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 78 | string SimpleVar::DebugString() const { |
Shinichiro Hamaji | 5081c71 | 2015-08-14 16:49:20 +0900 | [diff] [blame] | 79 | return v_; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 80 | } |
| 81 | |
Shinichiro Hamaji | f62e9a7 | 2015-06-26 04:18:21 +0900 | [diff] [blame] | 82 | RecursiveVar::RecursiveVar(Value* v, VarOrigin origin, StringPiece orig) |
Dan Willemsen | 3ce083f | 2017-10-11 22:17:48 -0700 | [diff] [blame] | 83 | : v_(v), origin_(origin), orig_(orig) {} |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 84 | |
| 85 | void RecursiveVar::Eval(Evaluator* ev, string* s) const { |
Dan Willemsen | 36e5729 | 2017-10-09 11:23:32 -0700 | [diff] [blame^] | 86 | ev->CheckStack(); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 87 | v_->Eval(ev, s); |
| 88 | } |
| 89 | |
Dan Willemsen | 36e5729 | 2017-10-09 11:23:32 -0700 | [diff] [blame^] | 90 | void RecursiveVar::AppendVar(Evaluator* ev, Value* v) { |
| 91 | ev->CheckStack(); |
Shinichiro Hamaji | 4c469b3 | 2015-06-15 19:53:36 +0900 | [diff] [blame] | 92 | v_ = NewExpr3(v_, NewLiteral(" "), v); |
| 93 | } |
| 94 | |
Shinichiro Hamaji | 81699be | 2015-06-22 18:07:38 +0900 | [diff] [blame] | 95 | StringPiece RecursiveVar::String() const { |
| 96 | return orig_; |
| 97 | } |
| 98 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 99 | string RecursiveVar::DebugString() const { |
| 100 | return v_->DebugString(); |
| 101 | } |
| 102 | |
| 103 | UndefinedVar::UndefinedVar() {} |
| 104 | |
| 105 | void UndefinedVar::Eval(Evaluator*, string*) const { |
| 106 | // Nothing to do. |
| 107 | } |
| 108 | |
Shinichiro Hamaji | 81699be | 2015-06-22 18:07:38 +0900 | [diff] [blame] | 109 | StringPiece UndefinedVar::String() const { |
Shinichiro Hamaji | 388e858 | 2015-07-03 16:51:46 +0900 | [diff] [blame] | 110 | return StringPiece(""); |
Shinichiro Hamaji | 81699be | 2015-06-22 18:07:38 +0900 | [diff] [blame] | 111 | } |
| 112 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 113 | string UndefinedVar::DebugString() const { |
| 114 | return "*undefined*"; |
| 115 | } |
| 116 | |
| 117 | Vars::~Vars() { |
| 118 | for (auto p : *this) { |
| 119 | delete p.second; |
| 120 | } |
| 121 | } |
| 122 | |
Shinichiro Hamaji | c9b9e5e | 2016-02-18 18:18:54 +0900 | [diff] [blame] | 123 | void Vars::add_used_env_vars(Symbol v) { |
| 124 | used_env_vars_.insert(v); |
| 125 | } |
| 126 | |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 127 | Var* Vars::Lookup(Symbol name) const { |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 128 | auto found = find(name); |
| 129 | if (found == end()) |
| 130 | return kUndefined; |
Shinichiro Hamaji | 5163e04 | 2015-07-14 03:51:44 +0900 | [diff] [blame] | 131 | Var* v = found->second; |
| 132 | if (v->Origin() == VarOrigin::ENVIRONMENT || |
| 133 | v->Origin() == VarOrigin::ENVIRONMENT_OVERRIDE) { |
| 134 | used_env_vars_.insert(name); |
| 135 | } |
| 136 | return v; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 137 | } |
| 138 | |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 139 | void Vars::Assign(Symbol name, Var* v, bool* readonly) { |
| 140 | *readonly = false; |
Shinichiro Hamaji | 3deff5b | 2016-02-17 17:50:06 +0900 | [diff] [blame] | 141 | auto p = emplace(name, v); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 142 | if (!p.second) { |
Shinichiro Hamaji | 0ea9e91 | 2015-06-26 04:24:38 +0900 | [diff] [blame] | 143 | Var* orig = p.first->second; |
Dan Willemsen | f87d49e | 2016-09-29 20:09:47 -0700 | [diff] [blame] | 144 | if (orig->ReadOnly()) { |
| 145 | *readonly = true; |
| 146 | return; |
| 147 | } |
Shinichiro Hamaji | 0ea9e91 | 2015-06-26 04:24:38 +0900 | [diff] [blame] | 148 | if (orig->Origin() == VarOrigin::OVERRIDE || |
| 149 | orig->Origin() == VarOrigin::ENVIRONMENT_OVERRIDE) { |
| 150 | return; |
| 151 | } |
Shinichiro Hamaji | 2bb8f37 | 2015-06-26 06:58:13 +0900 | [diff] [blame] | 152 | if (orig->Origin() == VarOrigin::AUTOMATIC) { |
| 153 | ERROR("overriding automatic variable is not implemented yet"); |
| 154 | } |
Shinichiro Hamaji | 0ea9e91 | 2015-06-26 04:24:38 +0900 | [diff] [blame] | 155 | if (orig->IsDefined()) |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 156 | delete p.first->second; |
| 157 | p.first->second = v; |
| 158 | } |
| 159 | } |
Shinichiro Hamaji | cf0cd68 | 2015-06-18 16:18:13 +0900 | [diff] [blame] | 160 | |
Shinichiro Hamaji | 5163e04 | 2015-07-14 03:51:44 +0900 | [diff] [blame] | 161 | unordered_set<Symbol> Vars::used_env_vars_; |
| 162 | |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame] | 163 | ScopedVar::ScopedVar(Vars* vars, Symbol name, Var* var) |
Shinichiro Hamaji | cf0cd68 | 2015-06-18 16:18:13 +0900 | [diff] [blame] | 164 | : vars_(vars), orig_(NULL) { |
Shinichiro Hamaji | 3deff5b | 2016-02-17 17:50:06 +0900 | [diff] [blame] | 165 | auto p = vars->emplace(name, var); |
Shinichiro Hamaji | cf0cd68 | 2015-06-18 16:18:13 +0900 | [diff] [blame] | 166 | iter_ = p.first; |
| 167 | if (!p.second) { |
| 168 | orig_ = iter_->second; |
| 169 | iter_->second = var; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | ScopedVar::~ScopedVar() { |
| 174 | if (orig_) { |
| 175 | iter_->second = orig_; |
| 176 | } else { |
| 177 | vars_->erase(iter_); |
| 178 | } |
| 179 | } |