github.com/westcoastroms/westcoastroms-build@v0.0.0-20190928114312-2350e5a73030/build/soong/phony/phony.go (about)

     1  // Copyright 2016 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  
    15  package phony
    16  
    17  import (
    18  	"fmt"
    19  	"io"
    20  	"strings"
    21  
    22  	"android/soong/android"
    23  )
    24  
    25  func init() {
    26  	android.RegisterModuleType("phony", phonyFactory)
    27  }
    28  
    29  type phony struct {
    30  	android.ModuleBase
    31  	requiredModuleNames []string
    32  }
    33  
    34  func phonyFactory() android.Module {
    35  	module := &phony{}
    36  
    37  	android.InitAndroidModule(module)
    38  	return module
    39  }
    40  
    41  func (p *phony) DepsMutator(ctx android.BottomUpMutatorContext) {
    42  }
    43  
    44  func (p *phony) GenerateAndroidBuildActions(ctx android.ModuleContext) {
    45  	p.requiredModuleNames = ctx.RequiredModuleNames()
    46  	if len(p.requiredModuleNames) == 0 {
    47  		ctx.PropertyErrorf("required", "phony must not have empty required dependencies in order to be useful(and therefore permitted).")
    48  	}
    49  }
    50  
    51  func (p *phony) AndroidMk() android.AndroidMkData {
    52  	return android.AndroidMkData{
    53  		Custom: func(w io.Writer, name, prefix, moduleDir string, data android.AndroidMkData) {
    54  			fmt.Fprintln(w, "\ninclude $(CLEAR_VARS)")
    55  			fmt.Fprintln(w, "LOCAL_PATH :=", moduleDir)
    56  			fmt.Fprintln(w, "LOCAL_MODULE :=", name)
    57  			fmt.Fprintln(w, "LOCAL_REQUIRED_MODULES := "+strings.Join(p.requiredModuleNames, " "))
    58  			fmt.Fprintln(w, "include $(BUILD_PHONY_PACKAGE)")
    59  		},
    60  	}
    61  }