1// Copyright 2015 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 common
16
17import (
18	"fmt"
19	"reflect"
20	"runtime"
21	"strings"
22
23	"github.com/google/blueprint/proptools"
24)
25
26func init() {
27	RegisterBottomUpMutator("variable", variableMutator)
28}
29
30type variableProperties struct {
31	Product_variables struct {
32		Platform_sdk_version struct {
33			Asflags []string
34		}
35
36		// unbundled_build is a catch-all property to annotate modules that don't build in one or
37		// more unbundled branches, usually due to dependencies missing from the manifest.
38		Unbundled_build struct {
39			Enabled *bool `android:"arch_variant"`
40		} `android:"arch_variant"`
41
42		Brillo struct {
43			Version_script *string `android:"arch_variant"`
44		} `android:"arch_variant"`
45
46		Malloc_not_svelte struct {
47			Cflags []string
48		}
49	} `android:"arch_variant"`
50}
51
52var zeroProductVariables variableProperties
53
54type productVariables struct {
55	Platform_sdk_version *int `json:",omitempty"`
56
57	DeviceName        *string   `json:",omitempty"`
58	DeviceArch        *string   `json:",omitempty"`
59	DeviceArchVariant *string   `json:",omitempty"`
60	DeviceCpuVariant  *string   `json:",omitempty"`
61	DeviceAbi         *[]string `json:",omitempty"`
62	DeviceUsesClang   *bool     `json:",omitempty"`
63
64	DeviceSecondaryArch        *string   `json:",omitempty"`
65	DeviceSecondaryArchVariant *string   `json:",omitempty"`
66	DeviceSecondaryCpuVariant  *string   `json:",omitempty"`
67	DeviceSecondaryAbi         *[]string `json:",omitempty"`
68
69	HostArch          *string `json:",omitempty"`
70	HostSecondaryArch *string `json:",omitempty"`
71
72	CrossHost              *string `json:",omitempty"`
73	CrossHostArch          *string `json:",omitempty"`
74	CrossHostSecondaryArch *string `json:",omitempty"`
75
76	Allow_missing_dependencies *bool `json:",omitempty"`
77	Unbundled_build            *bool `json:",omitempty"`
78	Brillo                     *bool `json:",omitempty"`
79	Malloc_not_svelte          *bool `json:",omitempty"`
80}
81
82func boolPtr(v bool) *bool {
83	return &v
84}
85
86func intPtr(v int) *int {
87	return &v
88}
89
90func stringPtr(v string) *string {
91	return &v
92}
93
94func (v *productVariables) SetDefaultConfig() {
95	*v = productVariables{
96		Platform_sdk_version:       intPtr(22),
97		HostArch:                   stringPtr("x86_64"),
98		HostSecondaryArch:          stringPtr("x86"),
99		DeviceName:                 stringPtr("flounder"),
100		DeviceArch:                 stringPtr("arm64"),
101		DeviceCpuVariant:           stringPtr("denver64"),
102		DeviceAbi:                  &[]string{"arm64-v8a"},
103		DeviceUsesClang:            boolPtr(true),
104		DeviceSecondaryArch:        stringPtr("arm"),
105		DeviceSecondaryArchVariant: stringPtr("armv7-a-neon"),
106		DeviceSecondaryCpuVariant:  stringPtr("denver"),
107		DeviceSecondaryAbi:         &[]string{"armeabi-v7a"},
108		Malloc_not_svelte:          boolPtr(false),
109	}
110
111	if runtime.GOOS == "linux" {
112		v.CrossHost = stringPtr("windows")
113		v.CrossHostArch = stringPtr("x86")
114		v.CrossHostSecondaryArch = stringPtr("x86_64")
115	}
116}
117
118func variableMutator(mctx AndroidBottomUpMutatorContext) {
119	var module AndroidModule
120	var ok bool
121	if module, ok = mctx.Module().(AndroidModule); !ok {
122		return
123	}
124
125	// TODO: depend on config variable, create variants, propagate variants up tree
126	a := module.base()
127	variableValues := reflect.ValueOf(&a.variableProperties.Product_variables).Elem()
128	zeroValues := reflect.ValueOf(zeroProductVariables.Product_variables)
129
130	for i := 0; i < variableValues.NumField(); i++ {
131		variableValue := variableValues.Field(i)
132		zeroValue := zeroValues.Field(i)
133		name := variableValues.Type().Field(i).Name
134		property := "product_variables." + proptools.PropertyNameForField(name)
135
136		// Check that the variable was set for the product
137		val := reflect.ValueOf(mctx.Config().(Config).ProductVariables).FieldByName(name)
138		if !val.IsValid() || val.Kind() != reflect.Ptr || val.IsNil() {
139			continue
140		}
141
142		val = val.Elem()
143
144		// For bools, check that the value is true
145		if val.Kind() == reflect.Bool && val.Bool() == false {
146			continue
147		}
148
149		// Check if any properties were set for the module
150		if reflect.DeepEqual(variableValue.Interface(), zeroValue.Interface()) {
151			continue
152		}
153
154		a.setVariableProperties(mctx, property, variableValue, val.Interface())
155	}
156}
157
158func (a *AndroidModuleBase) setVariableProperties(ctx AndroidBottomUpMutatorContext,
159	prefix string, productVariablePropertyValue reflect.Value, variableValue interface{}) {
160
161	printfIntoProperties(productVariablePropertyValue, variableValue)
162
163	err := proptools.AppendMatchingProperties(a.generalProperties,
164		productVariablePropertyValue.Addr().Interface(), nil)
165	if err != nil {
166		if propertyErr, ok := err.(*proptools.ExtendPropertyError); ok {
167			ctx.PropertyErrorf(propertyErr.Property, "%s", propertyErr.Err.Error())
168		} else {
169			panic(err)
170		}
171	}
172}
173
174func printfIntoProperties(productVariablePropertyValue reflect.Value, variableValue interface{}) {
175	for i := 0; i < productVariablePropertyValue.NumField(); i++ {
176		propertyValue := productVariablePropertyValue.Field(i)
177		kind := propertyValue.Kind()
178		if kind == reflect.Ptr {
179			if propertyValue.IsNil() {
180				continue
181			}
182			propertyValue = propertyValue.Elem()
183		}
184		switch propertyValue.Kind() {
185		case reflect.String:
186			printfIntoProperty(propertyValue, variableValue)
187		case reflect.Slice:
188			for j := 0; j < propertyValue.Len(); j++ {
189				printfIntoProperty(propertyValue.Index(j), variableValue)
190			}
191		case reflect.Bool:
192			// Nothing
193		case reflect.Struct:
194			printfIntoProperties(propertyValue, variableValue)
195		default:
196			panic(fmt.Errorf("unsupported field kind %q", propertyValue.Kind()))
197		}
198	}
199}
200
201func printfIntoProperty(propertyValue reflect.Value, variableValue interface{}) {
202	s := propertyValue.String()
203	// For now, we only support int formats
204	var i int
205	if strings.Contains(s, "%d") {
206		switch v := variableValue.(type) {
207		case int:
208			i = v
209		case bool:
210			if v {
211				i = 1
212			}
213		default:
214			panic(fmt.Errorf("unsupported type %T", variableValue))
215		}
216		propertyValue.Set(reflect.ValueOf(fmt.Sprintf(s, i)))
217	}
218}
219