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 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 15 | #ifndef EVAL_H_ |
| 16 | #define EVAL_H_ |
| 17 | |
Shinichiro Hamaji | 0562c30 | 2015-06-19 15:30:49 +0900 | [diff] [blame] | 18 | #include <memory> |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 19 | #include <unordered_map> |
| 20 | #include <vector> |
| 21 | |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 22 | #include "ast.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 23 | #include "loc.h" |
| 24 | #include "string_piece.h" |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 25 | #include "symtab.h" |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 26 | |
| 27 | using namespace std; |
| 28 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 29 | class Makefile; |
| 30 | class Rule; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 31 | class Var; |
| 32 | class Vars; |
| 33 | |
| 34 | struct EvalResult { |
| 35 | ~EvalResult(); |
Shinichiro Hamaji | 0562c30 | 2015-06-19 15:30:49 +0900 | [diff] [blame] | 36 | vector<shared_ptr<Rule>> rules; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 37 | Vars* vars; |
| 38 | unordered_map<StringPiece, Vars*> rule_vars; |
| 39 | // TODO: read_mks |
| 40 | unordered_map<StringPiece, bool> exports; |
| 41 | }; |
| 42 | |
| 43 | class Evaluator { |
| 44 | public: |
| 45 | Evaluator(const Vars* vars); |
| 46 | ~Evaluator(); |
| 47 | |
| 48 | void EvalAssign(const AssignAST* ast); |
| 49 | void EvalRule(const RuleAST* ast); |
| 50 | void EvalCommand(const CommandAST* ast); |
Shinichiro Hamaji | 42b625f | 2015-06-16 23:07:21 +0900 | [diff] [blame] | 51 | void EvalIf(const IfAST* ast); |
| 52 | void EvalInclude(const IncludeAST* ast); |
| 53 | void EvalExport(const ExportAST* ast); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 54 | |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 55 | Var* LookupVar(Symbol name); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 56 | // For target specific variables. |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 57 | Var* LookupVarInCurrentScope(Symbol name); |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 58 | |
Shinichiro Hamaji | 9619b36 | 2015-06-16 16:13:25 +0900 | [diff] [blame] | 59 | const Loc& loc() const { return loc_; } |
| 60 | |
Shinichiro Hamaji | ffc52c3 | 2015-06-23 16:51:07 +0900 | [diff] [blame] | 61 | const vector<shared_ptr<Rule>>& rules() const { return rules_; } |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 62 | const unordered_map<Symbol, Vars*>& rule_vars() const { |
Shinichiro Hamaji | ffc52c3 | 2015-06-23 16:51:07 +0900 | [diff] [blame] | 63 | return rule_vars_; |
| 64 | } |
Shinichiro Hamaji | cf0cd68 | 2015-06-18 16:18:13 +0900 | [diff] [blame] | 65 | Vars* mutable_vars() { return vars_; } |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 66 | const unordered_map<Symbol, bool>& exports() const { return exports_; } |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 67 | |
Shinichiro Hamaji | 9619b36 | 2015-06-16 16:13:25 +0900 | [diff] [blame] | 68 | void Error(const string& msg); |
| 69 | |
Shinichiro Hamaji | 0e74c54 | 2015-06-22 16:17:08 +0900 | [diff] [blame] | 70 | void set_is_bootstrap(bool b) { is_bootstrap_ = b; } |
| 71 | |
Shinichiro Hamaji | ffc52c3 | 2015-06-23 16:51:07 +0900 | [diff] [blame] | 72 | void set_current_scope(Vars* v) { current_scope_ = v; } |
| 73 | |
Shinichiro Hamaji | df1fc8b | 2015-06-29 15:45:21 +0900 | [diff] [blame] | 74 | bool avoid_io() const { return avoid_io_; } |
| 75 | void set_avoid_io(bool a) { avoid_io_ = a; } |
| 76 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 77 | private: |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 78 | Var* EvalRHS(Symbol lhs, Value* rhs, StringPiece orig_rhs, AssignOp op, |
Shinichiro Hamaji | 420f775 | 2015-06-26 04:02:02 +0900 | [diff] [blame] | 79 | bool is_override = false); |
Shinichiro Hamaji | 6e6de8d | 2015-06-18 11:12:58 +0900 | [diff] [blame] | 80 | void DoInclude(const char* fname, bool should_exist); |
| 81 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 82 | const Vars* in_vars_; |
| 83 | Vars* vars_; |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 84 | unordered_map<Symbol, Vars*> rule_vars_; |
Shinichiro Hamaji | 0562c30 | 2015-06-19 15:30:49 +0900 | [diff] [blame] | 85 | vector<shared_ptr<Rule>> rules_; |
Shinichiro Hamaji | e799275 | 2015-06-29 18:38:35 +0900 | [diff] [blame^] | 86 | unordered_map<Symbol, bool> exports_; |
Shinichiro Hamaji | 45a0c76 | 2015-06-26 06:47:10 +0900 | [diff] [blame] | 87 | |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 88 | Rule* last_rule_; |
Shinichiro Hamaji | 784b995 | 2015-06-23 14:29:32 +0900 | [diff] [blame] | 89 | Vars* current_scope_; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 90 | |
| 91 | Loc loc_; |
Shinichiro Hamaji | 0e74c54 | 2015-06-22 16:17:08 +0900 | [diff] [blame] | 92 | bool is_bootstrap_; |
Shinichiro Hamaji | df1fc8b | 2015-06-29 15:45:21 +0900 | [diff] [blame] | 93 | bool avoid_io_; |
Shinichiro Hamaji | 776ca30 | 2015-06-06 03:52:48 +0900 | [diff] [blame] | 94 | }; |
| 95 | |
| 96 | #endif // EVAL_H_ |