upload android base code part3

android/build/soong/cc/sabi.go

@@ -0,0 +1,90 @@
+// Copyright 2017 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 cc
+
+import (
+	"strings"
+
+	"github.com/google/blueprint"
+
+	"android/soong/android"
+	"android/soong/cc/config"
+)
+
+type SAbiProperties struct {
+	CreateSAbiDumps        bool `blueprint:"mutated"`
+	ReexportedIncludeFlags []string
+}
+
+type sabi struct {
+	Properties SAbiProperties
+}
+
+func (sabimod *sabi) props() []interface{} {
+	return []interface{}{&sabimod.Properties}
+}
+
+func (sabimod *sabi) begin(ctx BaseModuleContext) {}
+
+func (sabimod *sabi) deps(ctx BaseModuleContext, deps Deps) Deps {
+	return deps
+}
+
+func inListWithPrefixSearch(flag string, filter []string) bool {
+	// Assuming the filter is small enough.
+	// If the suffix of a filter element is *, try matching prefixes as well.
+	for _, f := range filter {
+		if (f == flag) || (strings.HasSuffix(f, "*") && strings.HasPrefix(flag, strings.TrimSuffix(f, "*"))) {
+			return true
+		}
+	}
+	return false
+}
+
+func filterOutWithPrefix(list []string, filter []string) (remainder []string) {
+	// Go through the filter, matching and optionally doing a prefix search for list elements.
+	for _, l := range list {
+		if !inListWithPrefixSearch(l, filter) {
+			remainder = append(remainder, l)
+		}
+	}
+	return
+}
+
+func (sabimod *sabi) flags(ctx ModuleContext, flags Flags) Flags {
+	// Assuming that the cflags which clang LibTooling tools cannot
+	// understand have not been converted to ninja variables yet.
+	flags.ToolingCFlags = filterOutWithPrefix(flags.CFlags, config.ClangLibToolingUnknownCflags)
+	return flags
+}
+
+func sabiDepsMutator(mctx android.TopDownMutatorContext) {
+	if c, ok := mctx.Module().(*Module); ok &&
+		(c.isVndk() || inList(c.Name(), llndkLibraries) ||
+			(c.sabi != nil && c.sabi.Properties.CreateSAbiDumps)) {
+		mctx.VisitDirectDeps(func(m blueprint.Module) {
+			tag := mctx.OtherModuleDependencyTag(m)
+			switch tag {
+			case staticDepTag, staticExportDepTag, lateStaticDepTag, wholeStaticDepTag:
+
+				cc, _ := m.(*Module)
+				if cc == nil {
+					return
+				}
+				cc.sabi.Properties.CreateSAbiDumps = true
+			}
+		})
+	}
+}