b63d7b3af7
Bug: 315353489 Test: m blueprint_tests Change-Id: Idcf6377d389b94c39e4e6ff4b8efa8a9f9e78b17
120 lines
3.8 KiB
Go
120 lines
3.8 KiB
Go
package bp2build
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import (
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"reflect"
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"strings"
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"android/soong/android"
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"github.com/google/blueprint/proptools"
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)
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type BazelFile struct {
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Dir string
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Basename string
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Contents string
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}
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func CreateBazelFiles(ruleShims map[string]RuleShim, buildToTargets map[string]BazelTargets, mode CodegenMode) []BazelFile {
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var files []BazelFile
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if mode == QueryView {
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// Write top level WORKSPACE.
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files = append(files, newFile("", "WORKSPACE", ""))
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// Used to denote that the top level directory is a package.
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files = append(files, newFile("", GeneratedBuildFileName, ""))
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files = append(files, newFile(bazelRulesSubDir, GeneratedBuildFileName, ""))
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// These files are only used for queryview.
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files = append(files, newFile(bazelRulesSubDir, "providers.bzl", providersBzl))
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for bzlFileName, ruleShim := range ruleShims {
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files = append(files, newFile(bazelRulesSubDir, bzlFileName+".bzl", ruleShim.content))
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}
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files = append(files, newFile(bazelRulesSubDir, "soong_module.bzl", generateSoongModuleBzl(ruleShims)))
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}
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files = append(files, createBuildFiles(buildToTargets, mode)...)
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return files
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}
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func createBuildFiles(buildToTargets map[string]BazelTargets, mode CodegenMode) []BazelFile {
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files := make([]BazelFile, 0, len(buildToTargets))
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for _, dir := range android.SortedKeys(buildToTargets) {
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targets := buildToTargets[dir]
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targets.sort()
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var content string
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if mode == QueryView {
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content = soongModuleLoad
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}
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if content != "" {
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// If there are load statements, add a couple of newlines.
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content += "\n\n"
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}
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content += targets.String()
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files = append(files, newFile(dir, GeneratedBuildFileName, content))
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}
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return files
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}
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func newFile(dir, basename, content string) BazelFile {
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return BazelFile{
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Dir: dir,
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Basename: basename,
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Contents: content,
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}
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}
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const (
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bazelRulesSubDir = "build/bazel/queryview_rules"
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)
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var (
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// Certain module property names are blocklisted/ignored here, for the reasons commented.
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ignoredPropNames = map[string]bool{
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"name": true, // redundant, since this is explicitly generated for every target
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"from": true, // reserved keyword
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"in": true, // reserved keyword
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"size": true, // reserved for tests
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"arch": true, // interface prop type is not supported yet.
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"multilib": true, // interface prop type is not supported yet.
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"target": true, // interface prop type is not supported yet.
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"visibility": true, // Bazel has native visibility semantics. Handle later.
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"features": true, // There is already a built-in attribute 'features' which cannot be overridden.
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"for": true, // reserved keyword, b/233579439
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"versions_with_info": true, // TODO(b/245730552) struct properties not fully supported
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}
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)
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func shouldGenerateAttribute(prop string) bool {
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return !ignoredPropNames[prop]
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}
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func shouldSkipStructField(field reflect.StructField) bool {
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if field.PkgPath != "" && !field.Anonymous {
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// Skip unexported fields. Some properties are
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// internal to Soong only, and these fields do not have PkgPath.
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return true
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}
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// fields with tag `blueprint:"mutated"` are exported to enable modification in mutators, etc.
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// but cannot be set in a .bp file
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if proptools.HasTag(field, "blueprint", "mutated") {
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return true
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}
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return false
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}
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// FIXME(b/168089390): In Bazel, rules ending with "_test" needs to be marked as
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// testonly = True, forcing other rules that depend on _test rules to also be
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// marked as testonly = True. This semantic constraint is not present in Soong.
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// To work around, rename "*_test" rules to "*_test_".
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func canonicalizeModuleType(moduleName string) string {
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if strings.HasSuffix(moduleName, "_test") {
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return moduleName + "_"
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}
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return moduleName
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}
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