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// 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 java
// This file generates the final rules for compiling all Java. All properties related to
// compiling should have been translated into javaBuilderFlags or another argument to the Transform*
// functions.
import (
"path/filepath"
"strings"
"android/soong/common"
"github.com/google/blueprint"
"github.com/google/blueprint/bootstrap"
)
var (
pctx = blueprint.NewPackageContext("android/soong/java")
// Compiling java is not conducive to proper dependency tracking. The path-matches-class-name
// requirement leads to unpredictable generated source file names, and a single .java file
// will get compiled into multiple .class files if it contains inner classes. To work around
// this, all java rules write into separate directories and then a post-processing step lists
// the files in the the directory into a list file that later rules depend on (and sometimes
// read from directly using @<listfile>)
javac = pctx.StaticRule("javac",
blueprint.RuleParams{
Command: `rm -rf "$outDir" && mkdir -p "$outDir" && ` +
`$javacCmd -encoding UTF-8 $javacFlags $bootClasspath $classpath ` +
`-extdirs "" -d $outDir @$out.rsp || ( rm -rf "$outDir"; exit 41 ) && ` +
`find $outDir -name "*.class" > $out`,
Rspfile: "$out.rsp",
RspfileContent: "$in",
Description: "javac $outDir",
},
"javacCmd", "javacFlags", "bootClasspath", "classpath", "outDir")
jar = pctx.StaticRule("jar",
blueprint.RuleParams{
Command: `$jarCmd -o $out $jarArgs`,
Description: "jar $out",
},
"jarCmd", "jarArgs")
dx = pctx.StaticRule("dx",
blueprint.RuleParams{
Command: `rm -rf "$outDir" && mkdir -p "$outDir" && ` +
`$dxCmd --dex --output=$outDir $dxFlags $in || ( rm -rf "$outDir"; exit 41 ) && ` +
`find "$outDir" -name "classes*.dex" > $out`,
Description: "dex $out",
},
"outDir", "dxFlags")
jarjar = pctx.StaticRule("jarjar",
blueprint.RuleParams{
Command: "java -jar $jarjarCmd process $rulesFile $in $out",
Description: "jarjar $out",
},
"rulesFile")
extractPrebuilt = pctx.StaticRule("extractPrebuilt",
blueprint.RuleParams{
Command: `rm -rf $outDir && unzip -qo $in -d $outDir && ` +
`find $outDir -name "*.class" > $classFile && ` +
`find $outDir -type f -a \! -name "*.class" -a \! -name "MANIFEST.MF" > $resourceFile || ` +
`(rm -rf $outDir; exit 42)`,
Description: "extract java prebuilt $outDir",
},
"outDir", "classFile", "resourceFile")
)
func init() {
pctx.StaticVariable("commonJdkFlags", "-source 1.7 -target 1.7 -Xmaxerrs 9999999")
pctx.StaticVariable("javacCmd", "javac -J-Xmx1024M $commonJdkFlags")
pctx.StaticVariable("jarCmd", filepath.Join(bootstrap.BinDir, "soong_jar"))
pctx.VariableFunc("dxCmd", func(c interface{}) (string, error) {
return c.(common.Config).HostBinTool("dx")
})
pctx.VariableFunc("jarjarCmd", func(c interface{}) (string, error) {
return c.(common.Config).HostJavaTool("jarjar.jar")
})
}
type javaBuilderFlags struct {
javacFlags string
dxFlags string
bootClasspath string
classpath string
aidlFlags string
}
type jarSpec struct {
fileList, dir string
}
func (j jarSpec) soongJarArgs() string {
return "-C " + j.dir + " -l " + j.fileList
}
func TransformJavaToClasses(ctx common.AndroidModuleContext, srcFiles []string,
flags javaBuilderFlags, deps []string) jarSpec {
classDir := filepath.Join(common.ModuleOutDir(ctx), "classes")
classFileList := filepath.Join(common.ModuleOutDir(ctx), "classes.list")
ctx.Build(pctx, blueprint.BuildParams{
Rule: javac,
Outputs: []string{classFileList},
Inputs: srcFiles,
Implicits: deps,
Args: map[string]string{
"javacFlags": flags.javacFlags,
"bootClasspath": flags.bootClasspath,
"classpath": flags.classpath,
"outDir": classDir,
},
})
return jarSpec{classFileList, classDir}
}
func TransformClassesToJar(ctx common.AndroidModuleContext, classes []jarSpec,
manifest string) string {
outputFile := filepath.Join(common.ModuleOutDir(ctx), "classes-full-debug.jar")
deps := []string{}
jarArgs := []string{}
for _, j := range classes {
deps = append(deps, j.fileList)
jarArgs = append(jarArgs, j.soongJarArgs())
}
if manifest != "" {
deps = append(deps, manifest)
jarArgs = append(jarArgs, "-m "+manifest)
}
deps = append(deps, "$jarCmd")
ctx.Build(pctx, blueprint.BuildParams{
Rule: jar,
Outputs: []string{outputFile},
Implicits: deps,
Args: map[string]string{
"jarArgs": strings.Join(jarArgs, " "),
},
})
return outputFile
}
func TransformClassesJarToDex(ctx common.AndroidModuleContext, classesJar string,
flags javaBuilderFlags) jarSpec {
outDir := filepath.Join(common.ModuleOutDir(ctx), "dex")
outputFile := filepath.Join(common.ModuleOutDir(ctx), "dex.filelist")
ctx.Build(pctx, blueprint.BuildParams{
Rule: dx,
Outputs: []string{outputFile},
Inputs: []string{classesJar},
Implicits: []string{"$dxCmd"},
Args: map[string]string{
"dxFlags": flags.dxFlags,
"outDir": outDir,
},
})
return jarSpec{outputFile, outDir}
}
func TransformDexToJavaLib(ctx common.AndroidModuleContext, resources []jarSpec,
dexJarSpec jarSpec) string {
outputFile := filepath.Join(common.ModuleOutDir(ctx), "javalib.jar")
var deps []string
var jarArgs []string
for _, j := range resources {
deps = append(deps, j.fileList)
jarArgs = append(jarArgs, j.soongJarArgs())
}
deps = append(deps, dexJarSpec.fileList)
jarArgs = append(jarArgs, dexJarSpec.soongJarArgs())
ctx.Build(pctx, blueprint.BuildParams{
Rule: jar,
Outputs: []string{outputFile},
Implicits: deps,
Args: map[string]string{
"jarArgs": strings.Join(jarArgs, " "),
},
})
return outputFile
}
func TransformJarJar(ctx common.AndroidModuleContext, classesJar string, rulesFile string) string {
outputFile := filepath.Join(common.ModuleOutDir(ctx), "classes-jarjar.jar")
ctx.Build(pctx, blueprint.BuildParams{
Rule: jarjar,
Outputs: []string{outputFile},
Inputs: []string{classesJar},
Implicits: []string{"$jarjarCmd"},
Args: map[string]string{
"rulesFile": rulesFile,
},
})
return outputFile
}
func TransformPrebuiltJarToClasses(ctx common.AndroidModuleContext,
prebuilt string) (classJarSpec, resourceJarSpec jarSpec) {
classDir := filepath.Join(common.ModuleOutDir(ctx), "classes")
classFileList := filepath.Join(classDir, "classes.list")
resourceFileList := filepath.Join(classDir, "resources.list")
ctx.Build(pctx, blueprint.BuildParams{
Rule: extractPrebuilt,
Outputs: []string{classFileList, resourceFileList},
Inputs: []string{prebuilt},
Args: map[string]string{
"outDir": classDir,
"classFile": classFileList,
"resourceFile": resourceFileList,
},
})
return jarSpec{classFileList, classDir}, jarSpec{resourceFileList, classDir}
}
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