1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
// Copyright 2015 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package genrule
import (
"path/filepath"
"github.com/google/blueprint"
"github.com/google/blueprint/pathtools"
"android/soong/common"
)
var (
pctx = blueprint.NewPackageContext("android/soong/genrule")
)
func init() {
pctx.VariableConfigMethod("srcDir", common.Config.SrcDir)
pctx.VariableConfigMethod("hostBin", common.Config.HostBin)
}
type SourceFileGenerator interface {
GeneratedSourceFiles() []string
}
type HostToolProvider interface {
HostToolPath() string
}
type generatorProperties struct {
// command to run on one or more input files. Available variables for substitution:
// $in: one or more input files
// $out: a single output file
// $srcDir: the root directory of the source tree
// The host bin directory will be in the path
Cmd string
// name of the module (if any) that produces the host executable. Leave empty for
// prebuilts or scripts that do not need a module to build them.
Tool string
}
type generator struct {
common.AndroidModuleBase
properties generatorProperties
tasks taskFunc
deps []string
rule blueprint.Rule
outputFiles []string
}
type taskFunc func(ctx common.AndroidModuleContext) []generateTask
type generateTask struct {
in []string
out string
}
func (g *generator) GeneratedSourceFiles() []string {
return g.outputFiles
}
func (g *generator) AndroidDynamicDependencies(ctx common.AndroidDynamicDependerModuleContext) []string {
if g.properties.Tool != "" {
ctx.AddFarVariationDependencies([]blueprint.Variation{{"hostordevice", common.Host.String()}},
g.properties.Tool)
}
return nil
}
func (g *generator) GenerateAndroidBuildActions(ctx common.AndroidModuleContext) {
g.rule = ctx.Rule(pctx, "generator", blueprint.RuleParams{
Command: "PATH=$$PATH:$hostBin " + g.properties.Cmd,
})
ctx.VisitDirectDeps(func(module blueprint.Module) {
if t, ok := module.(HostToolProvider); ok {
p := t.HostToolPath()
if p != "" {
g.deps = append(g.deps, p)
} else {
ctx.ModuleErrorf("host tool %q missing output file", ctx.OtherModuleName(module))
}
} else {
ctx.ModuleErrorf("unknown dependency %q", ctx.OtherModuleName(module))
}
})
for _, task := range g.tasks(ctx) {
g.generateSourceFile(ctx, task)
}
}
func (g *generator) generateSourceFile(ctx common.AndroidModuleContext, task generateTask) {
ctx.Build(pctx, blueprint.BuildParams{
Rule: g.rule,
Inputs: task.in,
Implicits: g.deps,
Outputs: []string{task.out},
})
g.outputFiles = append(g.outputFiles, task.out)
}
func generatorFactory(tasks taskFunc, props ...interface{}) (blueprint.Module, []interface{}) {
module := &generator{
tasks: tasks,
}
props = append(props, &module.properties)
return common.InitAndroidModule(module, props...)
}
func GenSrcsFactory() (blueprint.Module, []interface{}) {
properties := &genSrcsProperties{}
tasks := func(ctx common.AndroidModuleContext) []generateTask {
srcFiles := ctx.ExpandSources(properties.Srcs, nil)
tasks := make([]generateTask, 0, len(srcFiles))
for _, in := range srcFiles {
out := pathtools.ReplaceExtension(in, properties.Output_extension)
out = filepath.Join(common.ModuleGenDir(ctx), out)
tasks = append(tasks, generateTask{[]string{in}, out})
}
return tasks
}
return generatorFactory(tasks, properties)
}
type genSrcsProperties struct {
// list of input files
Srcs []string
// extension that will be substituted for each output file
Output_extension string
}
func GenRuleFactory() (blueprint.Module, []interface{}) {
properties := &genRuleProperties{}
tasks := func(ctx common.AndroidModuleContext) []generateTask {
return []generateTask{
{
in: ctx.ExpandSources(properties.Srcs, nil),
out: filepath.Join(common.ModuleGenDir(ctx), properties.Out),
},
}
}
return generatorFactory(tasks, properties)
}
type genRuleProperties struct {
// list of input files
Srcs []string
// name of the output file that will be generated
Out string
}
|
