rust: rust_proc_macro host snapshot support.
Adds support for capturing rust_proc_macros as part of the host
snapshot. Proc macros target the host and can be thought of as compiler
plugins. Because of this, they don't have vendor image variants and
can't be easily captured as part of the vendor snapshot. Instead we
capture them as part of the host snapshot.
This adds a rust_prebuilt_proc_macro module type.
Bug: 204304380
Test: m HOST_FAKE_SNAPSHOT_ENABLE=true host-fake-snapshot dist
Test: python3 development/vendor_snapshot/update.py --image=host
--install-dir=vendor/vendor_name/ 31 --local out/dist
Test: Checked Android.bp for rust_prebuilt_proc_macro modules.
Change-Id: I4a8c4d9c41b7ca361b5b97d3f74973918c2a5fe3
diff --git a/snapshot/host_fake_snapshot.go b/snapshot/host_fake_snapshot.go
index 6b4e12b..1a75f3a 100644
--- a/snapshot/host_fake_snapshot.go
+++ b/snapshot/host_fake_snapshot.go
@@ -114,13 +114,13 @@
if !apexInfo.IsForPlatform() {
return
}
- path := hostBinToolPath(module)
+ path := hostToolPath(module)
if path.Valid() && path.String() != "" {
outFile := filepath.Join(c.snapshotDir, path.String())
if !seen[outFile] {
seen[outFile] = true
outputs = append(outputs, WriteStringToFileRule(ctx, "", outFile))
- jsonData = append(jsonData, *hostBinJsonDesc(module))
+ jsonData = append(jsonData, *hostJsonDesc(module))
}
}
})
diff --git a/snapshot/host_snapshot.go b/snapshot/host_snapshot.go
index 09a382e..75b5e88 100644
--- a/snapshot/host_snapshot.go
+++ b/snapshot/host_snapshot.go
@@ -19,6 +19,7 @@
"fmt"
"path/filepath"
"sort"
+ "strings"
"github.com/google/blueprint"
"github.com/google/blueprint/proptools"
@@ -62,6 +63,11 @@
installDir android.InstallPath
}
+type ProcMacro interface {
+ ProcMacro() bool
+ CrateName() string
+}
+
func hostSnapshotFactory() android.Module {
module := &hostSnapshot{}
initHostToolsModule(module)
@@ -94,7 +100,7 @@
// Create JSON file based on the direct dependencies
ctx.VisitDirectDeps(func(dep android.Module) {
- desc := hostBinJsonDesc(dep)
+ desc := hostJsonDesc(dep)
if desc != nil {
jsonData = append(jsonData, *desc)
}
@@ -183,7 +189,7 @@
}
// Get host tools path and relative install string helpers
-func hostBinToolPath(m android.Module) android.OptionalPath {
+func hostToolPath(m android.Module) android.OptionalPath {
if provider, ok := m.(android.HostToolProvider); ok {
return provider.HostToolPath()
}
@@ -198,18 +204,30 @@
return outString
}
-// Create JSON description for given module, only create descriptions for binary modueles which
-// provide a valid HostToolPath
-func hostBinJsonDesc(m android.Module) *SnapshotJsonFlags {
- path := hostBinToolPath(m)
+// Create JSON description for given module, only create descriptions for binary modules
+// and rust_proc_macro modules which provide a valid HostToolPath
+func hostJsonDesc(m android.Module) *SnapshotJsonFlags {
+ path := hostToolPath(m)
relPath := hostRelativePathString(m)
+ procMacro := false
+ moduleStem := filepath.Base(path.String())
+ crateName := ""
+
+ if pm, ok := m.(ProcMacro); ok && pm.ProcMacro() {
+ procMacro = pm.ProcMacro()
+ moduleStem = strings.TrimSuffix(moduleStem, filepath.Ext(moduleStem))
+ crateName = pm.CrateName()
+ }
+
if path.Valid() && path.String() != "" {
return &SnapshotJsonFlags{
ModuleName: m.Name(),
- ModuleStemName: filepath.Base(path.String()),
+ ModuleStemName: moduleStem,
Filename: path.String(),
Required: append(m.HostRequiredModuleNames(), m.RequiredModuleNames()...),
RelativeInstallPath: relPath,
+ RustProcMacro: procMacro,
+ CrateName: crateName,
}
}
return nil
diff --git a/snapshot/snapshot_base.go b/snapshot/snapshot_base.go
index 79d3cf6..4a14f2e 100644
--- a/snapshot/snapshot_base.go
+++ b/snapshot/snapshot_base.go
@@ -114,6 +114,8 @@
RelativeInstallPath string `json:",omitempty"`
Filename string `json:",omitempty"`
ModuleStemName string `json:",omitempty"`
+ RustProcMacro bool `json:",omitempty"`
+ CrateName string `json:",omitempty"`
// dependencies
Required []string `json:",omitempty"`