1// Copyright 2017 Google Inc. All rights reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package cc
16
17import (
18	"strings"
19	"sync"
20
21	"android/soong/android"
22	"android/soong/cc/config"
23)
24
25var (
26	lsdumpPaths []string
27	sabiLock    sync.Mutex
28)
29
30type SAbiProperties struct {
31	CreateSAbiDumps    bool     `blueprint:"mutated"`
32	ReexportedIncludes []string `blueprint:"mutated"`
33}
34
35type sabi struct {
36	Properties SAbiProperties
37}
38
39func (sabimod *sabi) props() []interface{} {
40	return []interface{}{&sabimod.Properties}
41}
42
43func (sabimod *sabi) begin(ctx BaseModuleContext) {}
44
45func (sabimod *sabi) deps(ctx BaseModuleContext, deps Deps) Deps {
46	return deps
47}
48
49func inListWithPrefixSearch(flag string, filter []string) bool {
50	// Assuming the filter is small enough.
51	// If the suffix of a filter element is *, try matching prefixes as well.
52	for _, f := range filter {
53		if (f == flag) || (strings.HasSuffix(f, "*") && strings.HasPrefix(flag, strings.TrimSuffix(f, "*"))) {
54			return true
55		}
56	}
57	return false
58}
59
60func filterOutWithPrefix(list []string, filter []string) (remainder []string) {
61	// Go through the filter, matching and optionally doing a prefix search for list elements.
62	for _, l := range list {
63		if !inListWithPrefixSearch(l, filter) {
64			remainder = append(remainder, l)
65		}
66	}
67	return
68}
69
70func (sabimod *sabi) flags(ctx ModuleContext, flags Flags) Flags {
71	// Assuming that the cflags which clang LibTooling tools cannot
72	// understand have not been converted to ninja variables yet.
73	flags.Local.ToolingCFlags = filterOutWithPrefix(flags.Local.CFlags, config.ClangLibToolingUnknownCflags)
74	flags.Global.ToolingCFlags = filterOutWithPrefix(flags.Global.CFlags, config.ClangLibToolingUnknownCflags)
75	flags.Local.ToolingCppFlags = filterOutWithPrefix(flags.Local.CppFlags, config.ClangLibToolingUnknownCflags)
76	flags.Global.ToolingCppFlags = filterOutWithPrefix(flags.Global.CppFlags, config.ClangLibToolingUnknownCflags)
77
78	return flags
79}
80
81func sabiDepsMutator(mctx android.TopDownMutatorContext) {
82	if c, ok := mctx.Module().(*Module); ok &&
83		((c.IsVndk() && c.UseVndk()) || c.isLlndk(mctx.Config()) ||
84			(c.sabi != nil && c.sabi.Properties.CreateSAbiDumps)) {
85		mctx.VisitDirectDeps(func(m android.Module) {
86			tag := mctx.OtherModuleDependencyTag(m)
87			switch tag {
88			case StaticDepTag, staticExportDepTag, lateStaticDepTag, wholeStaticDepTag:
89
90				cc, _ := m.(*Module)
91				if cc == nil {
92					return
93				}
94				cc.sabi.Properties.CreateSAbiDumps = true
95			}
96		})
97	}
98}
99
100func addLsdumpPath(lsdumpPath string) {
101	sabiLock.Lock()
102	lsdumpPaths = append(lsdumpPaths, lsdumpPath)
103	sabiLock.Unlock()
104}
105