Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +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 | package kati |
| 16 | |
| 17 | import ( |
| 18 | "crypto/sha1" |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 19 | "fmt" |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 20 | "io/ioutil" |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 21 | "strings" |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 22 | "time" |
| 23 | ) |
| 24 | |
| 25 | type DepGraph struct { |
Fumitoshi Ukai | 0af4452 | 2015-06-25 15:26:08 +0900 | [diff] [blame] | 26 | nodes []*DepNode |
| 27 | vars Vars |
| 28 | accessedMks []*accessedMakefile |
| 29 | exports map[string]bool |
| 30 | isCached bool |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | func (g *DepGraph) Nodes() []*DepNode { return g.nodes } |
| 34 | func (g *DepGraph) Vars() Vars { return g.vars } |
| 35 | func (g *DepGraph) Exports() map[string]bool { return g.exports } |
| 36 | func (g *DepGraph) IsCached() bool { return g.isCached } |
| 37 | |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 38 | type LoadReq struct { |
| 39 | Makefile string |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 40 | Targets []string |
| 41 | CommandLineVars []string |
| 42 | EnvironmentVars []string |
| 43 | UseCache bool |
| 44 | } |
| 45 | |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 46 | func FromCommandLine(cmdline []string) LoadReq { |
| 47 | var vars []string |
| 48 | var targets []string |
| 49 | for _, arg := range cmdline { |
| 50 | if strings.IndexByte(arg, '=') >= 0 { |
| 51 | vars = append(vars, arg) |
| 52 | continue |
| 53 | } |
| 54 | targets = append(targets, arg) |
| 55 | } |
| 56 | return LoadReq{ |
| 57 | Makefile: defaultMakefile(), |
| 58 | Targets: targets, |
| 59 | CommandLineVars: vars, |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | func initVars(vars Vars, kvlist []string, origin string) error { |
| 64 | for _, v := range kvlist { |
| 65 | kv := strings.SplitN(v, "=", 2) |
| 66 | logf("%s var %q", origin, v) |
| 67 | if len(kv) < 2 { |
| 68 | return fmt.Errorf("A weird %s variable %q", origin, kv) |
| 69 | } |
| 70 | vars.Assign(kv[0], &recursiveVar{ |
| 71 | expr: literal(kv[1]), |
| 72 | origin: origin, |
| 73 | }) |
| 74 | } |
| 75 | return nil |
| 76 | } |
| 77 | |
| 78 | func Load(req LoadReq) (*DepGraph, error) { |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 79 | startTime := time.Now() |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 80 | if req.Makefile == "" { |
| 81 | req.Makefile = defaultMakefile() |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 82 | } |
| 83 | |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 84 | if req.UseCache { |
Fumitoshi Ukai | 4bb4cd5 | 2015-06-25 18:07:21 +0900 | [diff] [blame^] | 85 | g := loadDepGraphCache(req.Makefile, req.Targets) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 86 | if g != nil { |
| 87 | return g, nil |
| 88 | } |
| 89 | } |
| 90 | |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 91 | bmk := bootstrapMakefile(req.Targets) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 92 | |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 93 | content, err := ioutil.ReadFile(req.Makefile) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 94 | if err != nil { |
| 95 | return nil, err |
| 96 | } |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 97 | mk, err := parseMakefile(content, req.Makefile) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 98 | if err != nil { |
| 99 | return nil, err |
| 100 | } |
| 101 | |
| 102 | for _, stmt := range mk.stmts { |
| 103 | stmt.show() |
| 104 | } |
| 105 | |
| 106 | mk.stmts = append(bmk.stmts, mk.stmts...) |
| 107 | |
| 108 | vars := make(Vars) |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 109 | err = initVars(vars, req.EnvironmentVars, "environment") |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 110 | if err != nil { |
| 111 | return nil, err |
| 112 | } |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 113 | err = initVars(vars, req.CommandLineVars, "command line") |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 114 | if err != nil { |
| 115 | return nil, err |
| 116 | } |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 117 | er, err := eval(mk, vars, req.UseCache) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 118 | if err != nil { |
| 119 | return nil, err |
| 120 | } |
| 121 | vars.Merge(er.vars) |
| 122 | |
| 123 | LogStats("eval time: %q", time.Since(startTime)) |
| 124 | LogStats("shell func time: %q %d", shellStats.Duration(), shellStats.Count()) |
| 125 | |
| 126 | startTime = time.Now() |
Fumitoshi Ukai | c9ff91b | 2015-06-25 15:58:36 +0900 | [diff] [blame] | 127 | db := newDepBuilder(er, vars) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 128 | LogStats("dep build prepare time: %q", time.Since(startTime)) |
| 129 | |
| 130 | startTime = time.Now() |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 131 | nodes, err := db.Eval(req.Targets) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 132 | if err != nil { |
| 133 | return nil, err |
| 134 | } |
| 135 | LogStats("dep build time: %q", time.Since(startTime)) |
Fumitoshi Ukai | 0af4452 | 2015-06-25 15:26:08 +0900 | [diff] [blame] | 136 | var accessedMks []*accessedMakefile |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 137 | // Always put the root Makefile as the first element. |
Fumitoshi Ukai | 0af4452 | 2015-06-25 15:26:08 +0900 | [diff] [blame] | 138 | accessedMks = append(accessedMks, &accessedMakefile{ |
Fumitoshi Ukai | 87586e5 | 2015-06-25 17:49:35 +0900 | [diff] [blame] | 139 | Filename: req.Makefile, |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 140 | Hash: sha1.Sum(content), |
Fumitoshi Ukai | 0af4452 | 2015-06-25 15:26:08 +0900 | [diff] [blame] | 141 | State: fileExists, |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 142 | }) |
Fumitoshi Ukai | 0af4452 | 2015-06-25 15:26:08 +0900 | [diff] [blame] | 143 | accessedMks = append(accessedMks, er.accessedMks...) |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 144 | return &DepGraph{ |
Fumitoshi Ukai | 0af4452 | 2015-06-25 15:26:08 +0900 | [diff] [blame] | 145 | nodes: nodes, |
| 146 | vars: vars, |
| 147 | accessedMks: accessedMks, |
| 148 | exports: er.exports, |
Fumitoshi Ukai | 744bb2b | 2015-06-25 00:10:52 +0900 | [diff] [blame] | 149 | }, nil |
| 150 | } |
Fumitoshi Ukai | 4bb4cd5 | 2015-06-25 18:07:21 +0900 | [diff] [blame^] | 151 | |
| 152 | type Loader interface { |
| 153 | Load(string) (*DepGraph, error) |
| 154 | } |
| 155 | |
| 156 | type Saver interface { |
| 157 | Save(*DepGraph, string, []string) error |
| 158 | } |
| 159 | |
| 160 | type LoadSaver interface { |
| 161 | Loader |
| 162 | Saver |
| 163 | } |