105 lines
3.8 KiB
Go
105 lines
3.8 KiB
Go
// Copyright 2020 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package android
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import (
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"fmt"
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"os"
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"strings"
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"github.com/google/blueprint"
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)
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// The Bazel QueryView singleton is responsible for generating the Ninja actions
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// for calling the soong_build primary builder in the main build.ninja file.
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func init() {
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RegisterSingletonType("bazel_queryview", BazelQueryViewSingleton)
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}
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// BazelQueryViewSingleton is the singleton responsible for registering the
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// soong_build build statement that will convert the Soong module graph after
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// applying *all* mutators, enabing the feature to query the final state of the
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// Soong graph. This mode is meant for querying the build graph state, and not meant
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// for generating BUILD files to be checked in.
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func BazelQueryViewSingleton() Singleton {
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return &bazelQueryViewSingleton{}
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}
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// BazelConverterSingleton is the singleton responsible for registering the soong_build
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// build statement that will convert the Soong module graph by applying an alternate
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// pipeline of mutators, with the goal of reaching semantic equivalence between the original
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// Blueprint and final BUILD files. Using this mode, the goal is to be able to
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// build with these BUILD files directly in the source tree.
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func BazelConverterSingleton() Singleton {
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return &bazelConverterSingleton{}
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}
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type bazelQueryViewSingleton struct{}
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type bazelConverterSingleton struct{}
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func generateBuildActionsForBazelConversion(ctx SingletonContext, converterMode bool) {
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name := "queryview"
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descriptionTemplate := "[EXPERIMENTAL, PRE-PRODUCTION] Creating the Bazel QueryView workspace with %s at $outDir"
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// Create a build and rule statement, using the Bazel QueryView's WORKSPACE
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// file as the output file marker.
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var deps Paths
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moduleListFilePath := pathForBuildToolDep(ctx, ctx.Config().moduleListFile)
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deps = append(deps, moduleListFilePath)
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deps = append(deps, pathForBuildToolDep(ctx, ctx.Config().ProductVariablesFileName))
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bazelQueryViewDirectory := PathForOutput(ctx, name)
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bazelQueryViewWorkspaceFile := bazelQueryViewDirectory.Join(ctx, "WORKSPACE")
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primaryBuilder := primaryBuilderPath(ctx)
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bazelQueryView := ctx.Rule(pctx, "bazelQueryView",
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blueprint.RuleParams{
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Command: fmt.Sprintf(
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"rm -rf ${outDir}/* && "+
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"%s --bazel_queryview_dir ${outDir} %s && "+
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"echo WORKSPACE: `cat %s` > ${outDir}/.queryview-depfile.d",
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primaryBuilder.String(),
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strings.Join(os.Args[1:], " "),
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moduleListFilePath.String(), // Use the contents of Android.bp.list as the depfile.
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),
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CommandDeps: []string{primaryBuilder.String()},
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Description: fmt.Sprintf(
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descriptionTemplate,
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primaryBuilder.Base()),
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Deps: blueprint.DepsGCC,
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Depfile: "${outDir}/.queryview-depfile.d",
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},
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"outDir")
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ctx.Build(pctx, BuildParams{
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Rule: bazelQueryView,
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Output: bazelQueryViewWorkspaceFile,
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Inputs: deps,
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Args: map[string]string{
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"outDir": bazelQueryViewDirectory.String(),
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},
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})
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// Add a phony target for generating the workspace
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ctx.Phony(name, bazelQueryViewWorkspaceFile)
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}
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func (c *bazelQueryViewSingleton) GenerateBuildActions(ctx SingletonContext) {
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generateBuildActionsForBazelConversion(ctx, false)
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}
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func (c *bazelConverterSingleton) GenerateBuildActions(ctx SingletonContext) {
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generateBuildActionsForBazelConversion(ctx, true)
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}
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