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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
15package java
16
17// This file generates the final rules for compiling all C/C++.  All properties related to
18// compiling should have been translated into builderFlags or another argument to the Transform*
19// functions.
20
21import (
22	"github.com/google/blueprint"
23
24	"android/soong/android"
25)
26
27func init() {
28	pctx.HostBinToolVariable("aidlCmd", "aidl")
29	pctx.SourcePathVariable("logtagsCmd", "build/tools/java-event-log-tags.py")
30	pctx.SourcePathVariable("mergeLogtagsCmd", "build/tools/merge-event-log-tags.py")
31
32	pctx.IntermediatesPathVariable("allLogtagsFile", "all-event-log-tags.txt")
33}
34
35var (
36	aidl = pctx.AndroidStaticRule("aidl",
37		blueprint.RuleParams{
38			Command:     "$aidlCmd -d$depFile $aidlFlags $in $out",
39			CommandDeps: []string{"$aidlCmd"},
40		},
41		"depFile", "aidlFlags")
42
43	logtags = pctx.AndroidStaticRule("logtags",
44		blueprint.RuleParams{
45			Command:     "$logtagsCmd -o $out $in $allLogtagsFile",
46			CommandDeps: []string{"$logtagsCmd"},
47		})
48
49	mergeLogtags = pctx.AndroidStaticRule("mergeLogtags",
50		blueprint.RuleParams{
51			Command:     "$mergeLogtagsCmd -o $out $in",
52			CommandDeps: []string{"$mergeLogtagsCmd"},
53		})
54)
55
56func genAidl(ctx android.ModuleContext, aidlFile android.Path, aidlFlags string) android.Path {
57	javaFile := android.GenPathWithExt(ctx, "aidl", aidlFile, "java")
58	depFile := javaFile.String() + ".d"
59
60	ctx.ModuleBuild(pctx, android.ModuleBuildParams{
61		Rule:        aidl,
62		Description: "aidl " + aidlFile.Rel(),
63		Output:      javaFile,
64		Input:       aidlFile,
65		Args: map[string]string{
66			"depFile":   depFile,
67			"aidlFlags": aidlFlags,
68		},
69	})
70
71	return javaFile
72}
73
74func genLogtags(ctx android.ModuleContext, logtagsFile android.Path) android.Path {
75	javaFile := android.GenPathWithExt(ctx, "logtags", logtagsFile, "java")
76
77	ctx.ModuleBuild(pctx, android.ModuleBuildParams{
78		Rule:        logtags,
79		Description: "logtags " + logtagsFile.Rel(),
80		Output:      javaFile,
81		Input:       logtagsFile,
82	})
83
84	return javaFile
85}
86
87func (j *Module) genSources(ctx android.ModuleContext, srcFiles android.Paths,
88	flags javaBuilderFlags) android.Paths {
89
90	for i, srcFile := range srcFiles {
91		switch srcFile.Ext() {
92		case ".aidl":
93			javaFile := genAidl(ctx, srcFile, flags.aidlFlags)
94			srcFiles[i] = javaFile
95		case ".logtags":
96			j.logtagsSrcs = append(j.logtagsSrcs, srcFile)
97			javaFile := genLogtags(ctx, srcFile)
98			srcFiles[i] = javaFile
99		}
100	}
101
102	return srcFiles
103}
104
105func LogtagsSingleton() blueprint.Singleton {
106	return &logtagsSingleton{}
107}
108
109type logtagsProducer interface {
110	logtags() android.Paths
111}
112
113type logtagsSingleton struct{}
114
115func (l *logtagsSingleton) GenerateBuildActions(ctx blueprint.SingletonContext) {
116	var allLogtags android.Paths
117	ctx.VisitAllModules(func(module blueprint.Module) {
118		if logtags, ok := module.(logtagsProducer); ok {
119			allLogtags = append(allLogtags, logtags.logtags()...)
120		}
121	})
122
123	ctx.Build(pctx, blueprint.BuildParams{
124		Rule:        mergeLogtags,
125		Description: "merge logtags",
126		Outputs:     []string{"$allLogtagsFile"},
127		Inputs:      allLogtags.Strings(),
128	})
129}
130