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// Copyright 2018 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 android
import (
"crypto/sha256"
"fmt"
"path/filepath"
"sort"
"strings"
"testing"
"github.com/google/blueprint"
"github.com/google/blueprint/proptools"
"google.golang.org/protobuf/encoding/prototext"
"google.golang.org/protobuf/proto"
"android/soong/cmd/sbox/sbox_proto"
"android/soong/remoteexec"
"android/soong/response"
"android/soong/shared"
)
const sboxSandboxBaseDir = "__SBOX_SANDBOX_DIR__"
const sboxOutSubDir = "out"
const sboxToolsSubDir = "tools"
const sboxOutDir = sboxSandboxBaseDir + "/" + sboxOutSubDir
// RuleBuilder provides an alternative to ModuleContext.Rule and ModuleContext.Build to add a command line to the build
// graph.
type RuleBuilder struct {
pctx PackageContext
ctx BuilderContext
commands []*RuleBuilderCommand
installs RuleBuilderInstalls
temporariesSet map[WritablePath]bool
restat bool
sbox bool
highmem bool
remoteable RemoteRuleSupports
rbeParams *remoteexec.REParams
outDir WritablePath
sboxOutSubDir string
sboxTools bool
sboxInputs bool
sboxManifestPath WritablePath
missingDeps []string
}
// NewRuleBuilder returns a newly created RuleBuilder.
func NewRuleBuilder(pctx PackageContext, ctx BuilderContext) *RuleBuilder {
return &RuleBuilder{
pctx: pctx,
ctx: ctx,
temporariesSet: make(map[WritablePath]bool),
sboxOutSubDir: sboxOutSubDir,
}
}
// SetSboxOutDirDirAsEmpty sets the out subdirectory to an empty string
// This is useful for sandboxing actions that change the execution root to a path in out/ (e.g mixed builds)
// For such actions, SetSboxOutDirDirAsEmpty ensures that the path does not become $SBOX_SANDBOX_DIR/out/out/bazel/output/execroot/__main__/...
func (rb *RuleBuilder) SetSboxOutDirDirAsEmpty() *RuleBuilder {
rb.sboxOutSubDir = ""
return rb
}
// RuleBuilderInstall is a tuple of install from and to locations.
type RuleBuilderInstall struct {
From Path
To string
}
type RuleBuilderInstalls []RuleBuilderInstall
// String returns the RuleBuilderInstalls in the form used by $(call copy-many-files) in Make, a space separated
// list of from:to tuples.
func (installs RuleBuilderInstalls) String() string {
sb := strings.Builder{}
for i, install := range installs {
if i != 0 {
sb.WriteRune(' ')
}
sb.WriteString(install.From.String())
sb.WriteRune(':')
sb.WriteString(install.To)
}
return sb.String()
}
// MissingDeps adds modules to the list of missing dependencies. If MissingDeps
// is called with a non-empty input, any call to Build will result in a rule
// that will print an error listing the missing dependencies and fail.
// MissingDeps should only be called if Config.AllowMissingDependencies() is
// true.
func (r *RuleBuilder) MissingDeps(missingDeps []string) {
r.missingDeps = append(r.missingDeps, missingDeps...)
}
// Restat marks the rule as a restat rule, which will be passed to ModuleContext.Rule in BuildParams.Restat.
func (r *RuleBuilder) Restat() *RuleBuilder {
r.restat = true
return r
}
// HighMem marks the rule as a high memory rule, which will limit how many run in parallel with other high memory
// rules.
func (r *RuleBuilder) HighMem() *RuleBuilder {
r.highmem = true
return r
}
// Remoteable marks the rule as supporting remote execution.
func (r *RuleBuilder) Remoteable(supports RemoteRuleSupports) *RuleBuilder {
r.remoteable = supports
return r
}
// Rewrapper marks the rule as running inside rewrapper using the given params in order to support
// running on RBE. During RuleBuilder.Build the params will be combined with the inputs, outputs
// and tools known to RuleBuilder to prepend an appropriate rewrapper command line to the rule's
// command line.
func (r *RuleBuilder) Rewrapper(params *remoteexec.REParams) *RuleBuilder {
if !r.sboxInputs {
panic(fmt.Errorf("RuleBuilder.Rewrapper must be called after RuleBuilder.SandboxInputs"))
}
r.rbeParams = params
return r
}
// Sbox marks the rule as needing to be wrapped by sbox. The outputDir should point to the output
// directory that sbox will wipe. It should not be written to by any other rule. manifestPath should
// point to a location where sbox's manifest will be written and must be outside outputDir. sbox
// will ensure that all outputs have been written, and will discard any output files that were not
// specified.
func (r *RuleBuilder) Sbox(outputDir WritablePath, manifestPath WritablePath) *RuleBuilder {
if r.sbox {
panic("Sbox() may not be called more than once")
}
if len(r.commands) > 0 {
panic("Sbox() may not be called after Command()")
}
r.sbox = true
r.outDir = outputDir
r.sboxManifestPath = manifestPath
return r
}
// SandboxTools enables tool sandboxing for the rule by copying any referenced tools into the
// sandbox.
func (r *RuleBuilder) SandboxTools() *RuleBuilder {
if !r.sbox {
panic("SandboxTools() must be called after Sbox()")
}
if len(r.commands) > 0 {
panic("SandboxTools() may not be called after Command()")
}
r.sboxTools = true
return r
}
// SandboxInputs enables input sandboxing for the rule by copying any referenced inputs into the
// sandbox. It also implies SandboxTools().
//
// Sandboxing inputs requires RuleBuilder to be aware of all references to input paths. Paths
// that are passed to RuleBuilder outside of the methods that expect inputs, for example
// FlagWithArg, must use RuleBuilderCommand.PathForInput to translate the path to one that matches
// the sandbox layout.
func (r *RuleBuilder) SandboxInputs() *RuleBuilder {
if !r.sbox {
panic("SandboxInputs() must be called after Sbox()")
}
if len(r.commands) > 0 {
panic("SandboxInputs() may not be called after Command()")
}
r.sboxTools = true
r.sboxInputs = true
return r
}
// Install associates an output of the rule with an install location, which can be retrieved later using
// RuleBuilder.Installs.
func (r *RuleBuilder) Install(from Path, to string) {
r.installs = append(r.installs, RuleBuilderInstall{from, to})
}
// Command returns a new RuleBuilderCommand for the rule. The commands will be ordered in the rule by when they were
// created by this method. That can be mutated through their methods in any order, as long as the mutations do not
// race with any call to Build.
func (r *RuleBuilder) Command() *RuleBuilderCommand {
command := &RuleBuilderCommand{
rule: r,
}
r.commands = append(r.commands, command)
return command
}
// Temporary marks an output of a command as an intermediate file that will be used as an input to another command
// in the same rule, and should not be listed in Outputs.
func (r *RuleBuilder) Temporary(path WritablePath) {
r.temporariesSet[path] = true
}
// DeleteTemporaryFiles adds a command to the rule that deletes any outputs that have been marked using Temporary
// when the rule runs. DeleteTemporaryFiles should be called after all calls to Temporary.
func (r *RuleBuilder) DeleteTemporaryFiles() {
var temporariesList WritablePaths
for intermediate := range r.temporariesSet {
temporariesList = append(temporariesList, intermediate)
}
sort.Slice(temporariesList, func(i, j int) bool {
return temporariesList[i].String() < temporariesList[j].String()
})
r.Command().Text("rm").Flag("-f").Outputs(temporariesList)
}
// Inputs returns the list of paths that were passed to the RuleBuilderCommand methods that take
// input paths, such as RuleBuilderCommand.Input, RuleBuilderCommand.Implicit, or
// RuleBuilderCommand.FlagWithInput. Inputs to a command that are also outputs of another command
// in the same RuleBuilder are filtered out. The list is sorted and duplicates removed.
func (r *RuleBuilder) Inputs() Paths {
outputs := r.outputSet()
depFiles := r.depFileSet()
inputs := make(map[string]Path)
for _, c := range r.commands {
for _, input := range append(c.inputs, c.implicits...) {
inputStr := input.String()
if _, isOutput := outputs[inputStr]; !isOutput {
if _, isDepFile := depFiles[inputStr]; !isDepFile {
inputs[input.String()] = input
}
}
}
}
var inputList Paths
for _, input := range inputs {
inputList = append(inputList, input)
}
sort.Slice(inputList, func(i, j int) bool {
return inputList[i].String() < inputList[j].String()
})
return inputList
}
// OrderOnlys returns the list of paths that were passed to the RuleBuilderCommand.OrderOnly or
// RuleBuilderCommand.OrderOnlys. The list is sorted and duplicates removed.
func (r *RuleBuilder) OrderOnlys() Paths {
orderOnlys := make(map[string]Path)
for _, c := range r.commands {
for _, orderOnly := range c.orderOnlys {
orderOnlys[orderOnly.String()] = orderOnly
}
}
var orderOnlyList Paths
for _, orderOnly := range orderOnlys {
orderOnlyList = append(orderOnlyList, orderOnly)
}
sort.Slice(orderOnlyList, func(i, j int) bool {
return orderOnlyList[i].String() < orderOnlyList[j].String()
})
return orderOnlyList
}
// Validations returns the list of paths that were passed to RuleBuilderCommand.Validation or
// RuleBuilderCommand.Validations. The list is sorted and duplicates removed.
func (r *RuleBuilder) Validations() Paths {
validations := make(map[string]Path)
for _, c := range r.commands {
for _, validation := range c.validations {
validations[validation.String()] = validation
}
}
var validationList Paths
for _, validation := range validations {
validationList = append(validationList, validation)
}
sort.Slice(validationList, func(i, j int) bool {
return validationList[i].String() < validationList[j].String()
})
return validationList
}
func (r *RuleBuilder) outputSet() map[string]WritablePath {
outputs := make(map[string]WritablePath)
for _, c := range r.commands {
for _, output := range c.outputs {
outputs[output.String()] = output
}
}
return outputs
}
// Outputs returns the list of paths that were passed to the RuleBuilderCommand methods that take
// output paths, such as RuleBuilderCommand.Output, RuleBuilderCommand.ImplicitOutput, or
// RuleBuilderCommand.FlagWithInput. The list is sorted and duplicates removed.
func (r *RuleBuilder) Outputs() WritablePaths {
outputs := r.outputSet()
var outputList WritablePaths
for _, output := range outputs {
if !r.temporariesSet[output] {
outputList = append(outputList, output)
}
}
sort.Slice(outputList, func(i, j int) bool {
return outputList[i].String() < outputList[j].String()
})
return outputList
}
func (r *RuleBuilder) symlinkOutputSet() map[string]WritablePath {
symlinkOutputs := make(map[string]WritablePath)
for _, c := range r.commands {
for _, symlinkOutput := range c.symlinkOutputs {
symlinkOutputs[symlinkOutput.String()] = symlinkOutput
}
}
return symlinkOutputs
}
// SymlinkOutputs returns the list of paths that the executor (Ninja) would
// verify, after build edge completion, that:
//
// 1) Created output symlinks match the list of paths in this list exactly (no more, no fewer)
// 2) Created output files are *not* declared in this list.
//
// These symlink outputs are expected to be a subset of outputs or implicit
// outputs, or they would fail validation at build param construction time
// later, to support other non-rule-builder approaches for constructing
// statements.
func (r *RuleBuilder) SymlinkOutputs() WritablePaths {
symlinkOutputs := r.symlinkOutputSet()
var symlinkOutputList WritablePaths
for _, symlinkOutput := range symlinkOutputs {
symlinkOutputList = append(symlinkOutputList, symlinkOutput)
}
sort.Slice(symlinkOutputList, func(i, j int) bool {
return symlinkOutputList[i].String() < symlinkOutputList[j].String()
})
return symlinkOutputList
}
func (r *RuleBuilder) depFileSet() map[string]WritablePath {
depFiles := make(map[string]WritablePath)
for _, c := range r.commands {
for _, depFile := range c.depFiles {
depFiles[depFile.String()] = depFile
}
}
return depFiles
}
// DepFiles returns the list of paths that were passed to the RuleBuilderCommand methods that take depfile paths, such
// as RuleBuilderCommand.DepFile or RuleBuilderCommand.FlagWithDepFile.
func (r *RuleBuilder) DepFiles() WritablePaths {
var depFiles WritablePaths
for _, c := range r.commands {
for _, depFile := range c.depFiles {
depFiles = append(depFiles, depFile)
}
}
return depFiles
}
// Installs returns the list of tuples passed to Install.
func (r *RuleBuilder) Installs() RuleBuilderInstalls {
return append(RuleBuilderInstalls(nil), r.installs...)
}
func (r *RuleBuilder) toolsSet() map[string]Path {
tools := make(map[string]Path)
for _, c := range r.commands {
for _, tool := range c.tools {
tools[tool.String()] = tool
}
}
return tools
}
// Tools returns the list of paths that were passed to the RuleBuilderCommand.Tool method. The
// list is sorted and duplicates removed.
func (r *RuleBuilder) Tools() Paths {
toolsSet := r.toolsSet()
var toolsList Paths
for _, tool := range toolsSet {
toolsList = append(toolsList, tool)
}
sort.Slice(toolsList, func(i, j int) bool {
return toolsList[i].String() < toolsList[j].String()
})
return toolsList
}
// RspFileInputs returns the list of paths that were passed to the RuleBuilderCommand.FlagWithRspFileInputList method.
func (r *RuleBuilder) RspFileInputs() Paths {
var rspFileInputs Paths
for _, c := range r.commands {
for _, rspFile := range c.rspFiles {
rspFileInputs = append(rspFileInputs, rspFile.paths...)
}
}
return rspFileInputs
}
func (r *RuleBuilder) rspFiles() []rspFileAndPaths {
var rspFiles []rspFileAndPaths
for _, c := range r.commands {
rspFiles = append(rspFiles, c.rspFiles...)
}
return rspFiles
}
// Commands returns a slice containing the built command line for each call to RuleBuilder.Command.
func (r *RuleBuilder) Commands() []string {
var commands []string
for _, c := range r.commands {
commands = append(commands, c.String())
}
return commands
}
// BuilderContext is a subset of ModuleContext and SingletonContext.
type BuilderContext interface {
PathContext
Rule(PackageContext, string, blueprint.RuleParams, ...string) blueprint.Rule
Build(PackageContext, BuildParams)
}
var _ BuilderContext = ModuleContext(nil)
var _ BuilderContext = SingletonContext(nil)
func (r *RuleBuilder) depFileMergerCmd(depFiles WritablePaths) *RuleBuilderCommand {
return r.Command().
builtToolWithoutDeps("dep_fixer").
Inputs(depFiles.Paths())
}
// BuildWithNinjaVars adds the built command line to the build graph, with dependencies on Inputs and Tools, and output files for
// Outputs. This function will not escape Ninja variables, so it may be used to write sandbox manifests using Ninja variables.
func (r *RuleBuilder) BuildWithUnescapedNinjaVars(name string, desc string) {
r.build(name, desc, false)
}
// Build adds the built command line to the build graph, with dependencies on Inputs and Tools, and output files for
// Outputs.
func (r *RuleBuilder) Build(name string, desc string) {
r.build(name, desc, true)
}
func (r *RuleBuilder) build(name string, desc string, ninjaEscapeCommandString bool) {
name = ninjaNameEscape(name)
if len(r.missingDeps) > 0 {
r.ctx.Build(r.pctx, BuildParams{
Rule: ErrorRule,
Outputs: r.Outputs(),
Description: desc,
Args: map[string]string{
"error": "missing dependencies: " + strings.Join(r.missingDeps, ", "),
},
})
return
}
var depFile WritablePath
var depFormat blueprint.Deps
if depFiles := r.DepFiles(); len(depFiles) > 0 {
depFile = depFiles[0]
depFormat = blueprint.DepsGCC
if len(depFiles) > 1 {
// Add a command locally that merges all depfiles together into the first depfile.
r.depFileMergerCmd(depFiles)
if r.sbox {
// Check for Rel() errors, as all depfiles should be in the output dir. Errors
// will be reported to the ctx.
for _, path := range depFiles[1:] {
Rel(r.ctx, r.outDir.String(), path.String())
}
}
}
}
tools := r.Tools()
commands := r.Commands()
outputs := r.Outputs()
inputs := r.Inputs()
rspFiles := r.rspFiles()
if len(commands) == 0 {
return
}
if len(outputs) == 0 {
panic("No outputs specified from any Commands")
}
commandString := strings.Join(commands, " && ")
if r.sbox {
// If running the command inside sbox, write the rule data out to an sbox
// manifest.textproto.
manifest := sbox_proto.Manifest{}
command := sbox_proto.Command{}
manifest.Commands = append(manifest.Commands, &command)
command.Command = proto.String(commandString)
if depFile != nil {
manifest.OutputDepfile = proto.String(depFile.String())
}
// If sandboxing tools is enabled, add copy rules to the manifest to copy each tool
// into the sbox directory.
if r.sboxTools {
for _, tool := range tools {
command.CopyBefore = append(command.CopyBefore, &sbox_proto.Copy{
From: proto.String(tool.String()),
To: proto.String(sboxPathForToolRel(r.ctx, tool)),
})
}
for _, c := range r.commands {
for _, tool := range c.packagedTools {
command.CopyBefore = append(command.CopyBefore, &sbox_proto.Copy{
From: proto.String(tool.srcPath.String()),
To: proto.String(sboxPathForPackagedToolRel(tool)),
Executable: proto.Bool(tool.executable),
})
tools = append(tools, tool.srcPath)
}
}
}
// If sandboxing inputs is enabled, add copy rules to the manifest to copy each input
// into the sbox directory.
if r.sboxInputs {
for _, input := range inputs {
command.CopyBefore = append(command.CopyBefore, &sbox_proto.Copy{
From: proto.String(input.String()),
To: proto.String(r.sboxPathForInputRel(input)),
})
}
// If using rsp files copy them and their contents into the sbox directory with
// the appropriate path mappings.
for _, rspFile := range rspFiles {
command.RspFiles = append(command.RspFiles, &sbox_proto.RspFile{
File: proto.String(rspFile.file.String()),
// These have to match the logic in sboxPathForInputRel
PathMappings: []*sbox_proto.PathMapping{
{
From: proto.String(r.outDir.String()),
To: proto.String(sboxOutSubDir),
},
{
From: proto.String(PathForOutput(r.ctx).String()),
To: proto.String(sboxOutSubDir),
},
},
})
}
command.Chdir = proto.Bool(true)
}
// Add copy rules to the manifest to copy each output file from the sbox directory.
// to the output directory after running the commands.
for _, output := range outputs {
rel := Rel(r.ctx, r.outDir.String(), output.String())
command.CopyAfter = append(command.CopyAfter, &sbox_proto.Copy{
From: proto.String(filepath.Join(r.sboxOutSubDir, rel)),
To: proto.String(output.String()),
})
}
// Outputs that were marked Temporary will not be checked that they are in the output
// directory by the loop above, check them here.
for path := range r.temporariesSet {
Rel(r.ctx, r.outDir.String(), path.String())
}
// Add a hash of the list of input files to the manifest so that the textproto file
// changes when the list of input files changes and causes the sbox rule that
// depends on it to rerun.
command.InputHash = proto.String(hashSrcFiles(inputs))
// Verify that the manifest textproto is not inside the sbox output directory, otherwise
// it will get deleted when the sbox rule clears its output directory.
_, manifestInOutDir := MaybeRel(r.ctx, r.outDir.String(), r.sboxManifestPath.String())
if manifestInOutDir {
ReportPathErrorf(r.ctx, "sbox rule %q manifestPath %q must not be in outputDir %q",
name, r.sboxManifestPath.String(), r.outDir.String())
}
// Create a rule to write the manifest as textproto.
pbText, err := prototext.Marshal(&manifest)
if err != nil {
ReportPathErrorf(r.ctx, "sbox manifest failed to marshal: %q", err)
}
if ninjaEscapeCommandString {
WriteFileRule(r.ctx, r.sboxManifestPath, string(pbText))
} else {
// We need to have a rule to write files that is
// defined on the RuleBuilder's pctx in order to
// write Ninja variables in the string.
// The WriteFileRule function above rule can only write
// raw strings because it is defined on the android
// package's pctx, and it can't access variables defined
// in another context.
r.ctx.Build(r.pctx, BuildParams{
Rule: r.ctx.Rule(r.pctx, "unescapedWriteFile", blueprint.RuleParams{
Command: `rm -rf ${out} && cat ${out}.rsp > ${out}`,
Rspfile: "${out}.rsp",
RspfileContent: "${content}",
Description: "write file",
}, "content"),
Output: r.sboxManifestPath,
Description: "write sbox manifest " + r.sboxManifestPath.Base(),
Args: map[string]string{
"content": string(pbText),
},
})
}
// Generate a new string to use as the command line of the sbox rule. This uses
// a RuleBuilderCommand as a convenience method of building the command line, then
// converts it to a string to replace commandString.
sboxCmd := &RuleBuilderCommand{
rule: &RuleBuilder{
ctx: r.ctx,
},
}
sboxCmd.builtToolWithoutDeps("sbox").
FlagWithArg("--sandbox-path ", shared.TempDirForOutDir(PathForOutput(r.ctx).String())).
FlagWithArg("--output-dir ", r.outDir.String()).
FlagWithInput("--manifest ", r.sboxManifestPath)
if r.restat {
sboxCmd.Flag("--write-if-changed")
}
// Replace the command string, and add the sbox tool and manifest textproto to the
// dependencies of the final sbox rule.
commandString = sboxCmd.buf.String()
tools = append(tools, sboxCmd.tools...)
inputs = append(inputs, sboxCmd.inputs...)
if r.rbeParams != nil {
// RBE needs a list of input files to copy to the remote builder. For inputs already
// listed in an rsp file, pass the rsp file directly to rewrapper. For the rest,
// create a new rsp file to pass to rewrapper.
var remoteRspFiles Paths
var remoteInputs Paths
remoteInputs = append(remoteInputs, inputs...)
remoteInputs = append(remoteInputs, tools...)
for _, rspFile := range rspFiles {
remoteInputs = append(remoteInputs, rspFile.file)
remoteRspFiles = append(remoteRspFiles, rspFile.file)
}
if len(remoteInputs) > 0 {
inputsListFile := r.sboxManifestPath.ReplaceExtension(r.ctx, "rbe_inputs.list")
writeRspFileRule(r.ctx, inputsListFile, remoteInputs)
remoteRspFiles = append(remoteRspFiles, inputsListFile)
// Add the new rsp file as an extra input to the rule.
inputs = append(inputs, inputsListFile)
}
r.rbeParams.OutputFiles = outputs.Strings()
r.rbeParams.RSPFiles = remoteRspFiles.Strings()
rewrapperCommand := r.rbeParams.NoVarTemplate(r.ctx.Config().RBEWrapper())
commandString = rewrapperCommand + " bash -c '" + strings.ReplaceAll(commandString, `'`, `'\''`) + "'"
}
} else {
// If not using sbox the rule will run the command directly, put the hash of the
// list of input files in a comment at the end of the command line to ensure ninja
// reruns the rule when the list of input files changes.
commandString += " # hash of input list: " + hashSrcFiles(inputs)
}
// Ninja doesn't like multiple outputs when depfiles are enabled, move all but the first output to
// ImplicitOutputs. RuleBuilder doesn't use "$out", so the distinction between Outputs and
// ImplicitOutputs doesn't matter.
output := outputs[0]
implicitOutputs := outputs[1:]
var rspFile, rspFileContent string
var rspFileInputs Paths
if len(rspFiles) > 0 {
// The first rsp files uses Ninja's rsp file support for the rule
rspFile = rspFiles[0].file.String()
// Use "$in" for rspFileContent to avoid duplicating the list of files in the dependency
// list and in the contents of the rsp file. Inputs to the rule that are not in the
// rsp file will be listed in Implicits instead of Inputs so they don't show up in "$in".
rspFileContent = "$in"
rspFileInputs = append(rspFileInputs, rspFiles[0].paths...)
for _, rspFile := range rspFiles[1:] {
// Any additional rsp files need an extra rule to write the file.
writeRspFileRule(r.ctx, rspFile.file, rspFile.paths)
// The main rule needs to depend on the inputs listed in the extra rsp file.
inputs = append(inputs, rspFile.paths...)
// The main rule needs to depend on the extra rsp file.
inputs = append(inputs, rspFile.file)
}
}
var pool blueprint.Pool
if r.ctx.Config().UseGoma() && r.remoteable.Goma {
// When USE_GOMA=true is set and the rule is supported by goma, allow jobs to run outside the local pool.
} else if r.ctx.Config().UseRBE() && r.remoteable.RBE {
// When USE_RBE=true is set and the rule is supported by RBE, use the remotePool.
pool = remotePool
} else if r.highmem {
pool = highmemPool
} else if r.ctx.Config().UseRemoteBuild() {
pool = localPool
}
if ninjaEscapeCommandString {
commandString = proptools.NinjaEscape(commandString)
}
r.ctx.Build(r.pctx, BuildParams{
Rule: r.ctx.Rule(r.pctx, name, blueprint.RuleParams{
Command: commandString,
CommandDeps: proptools.NinjaEscapeList(tools.Strings()),
Restat: r.restat,
Rspfile: proptools.NinjaEscape(rspFile),
RspfileContent: rspFileContent,
Pool: pool,
}),
Inputs: rspFileInputs,
Implicits: inputs,
OrderOnly: r.OrderOnlys(),
Validations: r.Validations(),
Output: output,
ImplicitOutputs: implicitOutputs,
SymlinkOutputs: r.SymlinkOutputs(),
Depfile: depFile,
Deps: depFormat,
Description: desc,
})
}
// RuleBuilderCommand is a builder for a command in a command line. It can be mutated by its methods to add to the
// command and track dependencies. The methods mutate the RuleBuilderCommand in place, as well as return the
// RuleBuilderCommand, so they can be used chained or unchained. All methods that add text implicitly add a single
// space as a separator from the previous method.
type RuleBuilderCommand struct {
rule *RuleBuilder
buf strings.Builder
inputs Paths
implicits Paths
orderOnlys Paths
validations Paths
outputs WritablePaths
symlinkOutputs WritablePaths
depFiles WritablePaths
tools Paths
packagedTools []PackagingSpec
rspFiles []rspFileAndPaths
}
type rspFileAndPaths struct {
file WritablePath
paths Paths
}
func checkPathNotNil(path Path) {
if path == nil {
panic("rule_builder paths cannot be nil")
}
}
func (c *RuleBuilderCommand) addInput(path Path) string {
checkPathNotNil(path)
c.inputs = append(c.inputs, path)
return c.PathForInput(path)
}
func (c *RuleBuilderCommand) addImplicit(path Path) {
checkPathNotNil(path)
c.implicits = append(c.implicits, path)
}
func (c *RuleBuilderCommand) addOrderOnly(path Path) {
checkPathNotNil(path)
c.orderOnlys = append(c.orderOnlys, path)
}
// PathForInput takes an input path and returns the appropriate path to use on the command line. If
// sbox was enabled via a call to RuleBuilder.Sbox() and the path was an output path it returns a
// path with the placeholder prefix used for outputs in sbox. If sbox is not enabled it returns the
// original path.
func (c *RuleBuilderCommand) PathForInput(path Path) string {
if c.rule.sbox {
rel, inSandbox := c.rule._sboxPathForInputRel(path)
if inSandbox {
rel = filepath.Join(sboxSandboxBaseDir, rel)
}
return rel
}
return path.String()
}
// PathsForInputs takes a list of input paths and returns the appropriate paths to use on the
// command line. If sbox was enabled via a call to RuleBuilder.Sbox() a path was an output path, it
// returns the path with the placeholder prefix used for outputs in sbox. If sbox is not enabled it
// returns the original paths.
func (c *RuleBuilderCommand) PathsForInputs(paths Paths) []string {
ret := make([]string, len(paths))
for i, path := range paths {
ret[i] = c.PathForInput(path)
}
return ret
}
// PathForOutput takes an output path and returns the appropriate path to use on the command
// line. If sbox was enabled via a call to RuleBuilder.Sbox(), it returns a path with the
// placeholder prefix used for outputs in sbox. If sbox is not enabled it returns the
// original path.
func (c *RuleBuilderCommand) PathForOutput(path WritablePath) string {
if c.rule.sbox {
// Errors will be handled in RuleBuilder.Build where we have a context to report them
rel, _, _ := maybeRelErr(c.rule.outDir.String(), path.String())
return filepath.Join(sboxOutDir, rel)
}
return path.String()
}
func sboxPathForToolRel(ctx BuilderContext, path Path) string {
// Errors will be handled in RuleBuilder.Build where we have a context to report them
toolDir := pathForInstall(ctx, ctx.Config().BuildOS, ctx.Config().BuildArch, "")
relOutSoong, isRelOutSoong, _ := maybeRelErr(toolDir.String(), path.String())
if isRelOutSoong {
// The tool is in the Soong output directory, it will be copied to __SBOX_OUT_DIR__/tools/out
return filepath.Join(sboxToolsSubDir, "out", relOutSoong)
}
// The tool is in the source directory, it will be copied to __SBOX_OUT_DIR__/tools/src
return filepath.Join(sboxToolsSubDir, "src", path.String())
}
func (r *RuleBuilder) _sboxPathForInputRel(path Path) (rel string, inSandbox bool) {
// Errors will be handled in RuleBuilder.Build where we have a context to report them
rel, isRelSboxOut, _ := maybeRelErr(r.outDir.String(), path.String())
if isRelSboxOut {
return filepath.Join(sboxOutSubDir, rel), true
}
if r.sboxInputs {
// When sandboxing inputs all inputs have to be copied into the sandbox. Input files that
// are outputs of other rules could be an arbitrary absolute path if OUT_DIR is set, so they
// will be copied to relative paths under __SBOX_OUT_DIR__/out.
rel, isRelOut, _ := maybeRelErr(PathForOutput(r.ctx).String(), path.String())
if isRelOut {
return filepath.Join(sboxOutSubDir, rel), true
}
}
return path.String(), false
}
func (r *RuleBuilder) sboxPathForInputRel(path Path) string {
rel, _ := r._sboxPathForInputRel(path)
return rel
}
func (r *RuleBuilder) sboxPathsForInputsRel(paths Paths) []string {
ret := make([]string, len(paths))
for i, path := range paths {
ret[i] = r.sboxPathForInputRel(path)
}
return ret
}
func sboxPathForPackagedToolRel(spec PackagingSpec) string {
return filepath.Join(sboxToolsSubDir, "out", spec.relPathInPackage)
}
// PathForPackagedTool takes a PackageSpec for a tool and returns the corresponding path for the
// tool after copying it into the sandbox. This can be used on the RuleBuilder command line to
// reference the tool.
func (c *RuleBuilderCommand) PathForPackagedTool(spec PackagingSpec) string {
if !c.rule.sboxTools {
panic("PathForPackagedTool() requires SandboxTools()")
}
return filepath.Join(sboxSandboxBaseDir, sboxPathForPackagedToolRel(spec))
}
// PathForTool takes a path to a tool, which may be an output file or a source file, and returns
// the corresponding path for the tool in the sbox sandbox if sbox is enabled, or the original path
// if it is not. This can be used on the RuleBuilder command line to reference the tool.
func (c *RuleBuilderCommand) PathForTool(path Path) string {
if c.rule.sbox && c.rule.sboxTools {
return filepath.Join(sboxSandboxBaseDir, sboxPathForToolRel(c.rule.ctx, path))
}
return path.String()
}
// PathsForTools takes a list of paths to tools, which may be output files or source files, and
// returns the corresponding paths for the tools in the sbox sandbox if sbox is enabled, or the
// original paths if it is not. This can be used on the RuleBuilder command line to reference the tool.
func (c *RuleBuilderCommand) PathsForTools(paths Paths) []string {
if c.rule.sbox && c.rule.sboxTools {
var ret []string
for _, path := range paths {
ret = append(ret, filepath.Join(sboxSandboxBaseDir, sboxPathForToolRel(c.rule.ctx, path)))
}
return ret
}
return paths.Strings()
}
// PackagedTool adds the specified tool path to the command line. It can only be used with tool
// sandboxing enabled by SandboxTools(), and will copy the tool into the sandbox.
func (c *RuleBuilderCommand) PackagedTool(spec PackagingSpec) *RuleBuilderCommand {
if !c.rule.sboxTools {
panic("PackagedTool() requires SandboxTools()")
}
c.packagedTools = append(c.packagedTools, spec)
c.Text(sboxPathForPackagedToolRel(spec))
return c
}
// ImplicitPackagedTool copies the specified tool into the sandbox without modifying the command
// line. It can only be used with tool sandboxing enabled by SandboxTools().
func (c *RuleBuilderCommand) ImplicitPackagedTool(spec PackagingSpec) *RuleBuilderCommand {
if !c.rule.sboxTools {
panic("ImplicitPackagedTool() requires SandboxTools()")
}
c.packagedTools = append(c.packagedTools, spec)
return c
}
// ImplicitPackagedTools copies the specified tools into the sandbox without modifying the command
// line. It can only be used with tool sandboxing enabled by SandboxTools().
func (c *RuleBuilderCommand) ImplicitPackagedTools(specs []PackagingSpec) *RuleBuilderCommand {
if !c.rule.sboxTools {
panic("ImplicitPackagedTools() requires SandboxTools()")
}
c.packagedTools = append(c.packagedTools, specs...)
return c
}
// Text adds the specified raw text to the command line. The text should not contain input or output paths or the
// rule will not have them listed in its dependencies or outputs.
func (c *RuleBuilderCommand) Text(text string) *RuleBuilderCommand {
if c.buf.Len() > 0 {
c.buf.WriteByte(' ')
}
c.buf.WriteString(text)
return c
}
// Textf adds the specified formatted text to the command line. The text should not contain input or output paths or
// the rule will not have them listed in its dependencies or outputs.
func (c *RuleBuilderCommand) Textf(format string, a ...interface{}) *RuleBuilderCommand {
return c.Text(fmt.Sprintf(format, a...))
}
// Flag adds the specified raw text to the command line. The text should not contain input or output paths or the
// rule will not have them listed in its dependencies or outputs.
func (c *RuleBuilderCommand) Flag(flag string) *RuleBuilderCommand {
return c.Text(flag)
}
// OptionalFlag adds the specified raw text to the command line if it is not nil. The text should not contain input or
// output paths or the rule will not have them listed in its dependencies or outputs.
func (c *RuleBuilderCommand) OptionalFlag(flag *string) *RuleBuilderCommand {
if flag != nil {
c.Text(*flag)
}
return c
}
// Flags adds the specified raw text to the command line. The text should not contain input or output paths or the
// rule will not have them listed in its dependencies or outputs.
func (c *RuleBuilderCommand) Flags(flags []string) *RuleBuilderCommand {
for _, flag := range flags {
c.Text(flag)
}
return c
}
// FlagWithArg adds the specified flag and argument text to the command line, with no separator between them. The flag
// and argument should not contain input or output paths or the rule will not have them listed in its dependencies or
// outputs.
func (c *RuleBuilderCommand) FlagWithArg(flag, arg string) *RuleBuilderCommand {
return c.Text(flag + arg)
}
// FlagForEachArg adds the specified flag joined with each argument to the command line. The result is identical to
// calling FlagWithArg for argument.
func (c *RuleBuilderCommand) FlagForEachArg(flag string, args []string) *RuleBuilderCommand {
for _, arg := range args {
c.FlagWithArg(flag, arg)
}
return c
}
// FlagWithList adds the specified flag and list of arguments to the command line, with the arguments joined by sep
// and no separator between the flag and arguments. The flag and arguments should not contain input or output paths or
// the rule will not have them listed in its dependencies or outputs.
func (c *RuleBuilderCommand) FlagWithList(flag string, list []string, sep string) *RuleBuilderCommand {
return c.Text(flag + strings.Join(list, sep))
}
// Tool adds the specified tool path to the command line. The path will be also added to the dependencies returned by
// RuleBuilder.Tools.
func (c *RuleBuilderCommand) Tool(path Path) *RuleBuilderCommand {
checkPathNotNil(path)
c.tools = append(c.tools, path)
return c.Text(c.PathForTool(path))
}
// Tool adds the specified tool path to the dependencies returned by RuleBuilder.Tools.
func (c *RuleBuilderCommand) ImplicitTool(path Path) *RuleBuilderCommand {
checkPathNotNil(path)
c.tools = append(c.tools, path)
return c
}
// Tool adds the specified tool path to the dependencies returned by RuleBuilder.Tools.
func (c *RuleBuilderCommand) ImplicitTools(paths Paths) *RuleBuilderCommand {
for _, path := range paths {
c.ImplicitTool(path)
}
return c
}
// BuiltTool adds the specified tool path that was built using a host Soong module to the command line. The path will
// be also added to the dependencies returned by RuleBuilder.Tools.
//
// It is equivalent to:
//
// cmd.Tool(ctx.Config().HostToolPath(ctx, tool))
func (c *RuleBuilderCommand) BuiltTool(tool string) *RuleBuilderCommand {
if c.rule.ctx.Config().UseHostMusl() {
// If the host is using musl, assume that the tool was built against musl libc and include
// libc_musl.so in the sandbox.
// TODO(ccross): if we supported adding new dependencies during GenerateAndroidBuildActions
// this could be a dependency + TransitivePackagingSpecs.
c.ImplicitTool(c.rule.ctx.Config().HostJNIToolPath(c.rule.ctx, "libc_musl"))
}
return c.builtToolWithoutDeps(tool)
}
// builtToolWithoutDeps is similar to BuiltTool, but doesn't add any dependencies. It is used
// internally by RuleBuilder for helper tools that are known to be compiled statically.
func (c *RuleBuilderCommand) builtToolWithoutDeps(tool string) *RuleBuilderCommand {
return c.Tool(c.rule.ctx.Config().HostToolPath(c.rule.ctx, tool))
}
// PrebuiltBuildTool adds the specified tool path from prebuils/build-tools. The path will be also added to the
// dependencies returned by RuleBuilder.Tools.
//
// It is equivalent to:
//
// cmd.Tool(ctx.Config().PrebuiltBuildTool(ctx, tool))
func (c *RuleBuilderCommand) PrebuiltBuildTool(ctx PathContext, tool string) *RuleBuilderCommand {
return c.Tool(ctx.Config().PrebuiltBuildTool(ctx, tool))
}
// Input adds the specified input path to the command line. The path will also be added to the dependencies returned by
// RuleBuilder.Inputs.
func (c *RuleBuilderCommand) Input(path Path) *RuleBuilderCommand {
return c.Text(c.addInput(path))
}
// Inputs adds the specified input paths to the command line, separated by spaces. The paths will also be added to the
// dependencies returned by RuleBuilder.Inputs.
func (c *RuleBuilderCommand) Inputs(paths Paths) *RuleBuilderCommand {
for _, path := range paths {
c.Input(path)
}
return c
}
// Implicit adds the specified input path to the dependencies returned by RuleBuilder.Inputs without modifying the
// command line.
func (c *RuleBuilderCommand) Implicit(path Path) *RuleBuilderCommand {
c.addImplicit(path)
return c
}
// Implicits adds the specified input paths to the dependencies returned by RuleBuilder.Inputs without modifying the
// command line.
func (c *RuleBuilderCommand) Implicits(paths Paths) *RuleBuilderCommand {
for _, path := range paths {
c.addImplicit(path)
}
return c
}
// GetImplicits returns the command's implicit inputs.
func (c *RuleBuilderCommand) GetImplicits() Paths {
return c.implicits
}
// OrderOnly adds the specified input path to the dependencies returned by RuleBuilder.OrderOnlys
// without modifying the command line.
func (c *RuleBuilderCommand) OrderOnly(path Path) *RuleBuilderCommand {
c.addOrderOnly(path)
return c
}
// OrderOnlys adds the specified input paths to the dependencies returned by RuleBuilder.OrderOnlys
// without modifying the command line.
func (c *RuleBuilderCommand) OrderOnlys(paths Paths) *RuleBuilderCommand {
for _, path := range paths {
c.addOrderOnly(path)
}
return c
}
// Validation adds the specified input path to the validation dependencies by
// RuleBuilder.Validations without modifying the command line.
func (c *RuleBuilderCommand) Validation(path Path) *RuleBuilderCommand {
checkPathNotNil(path)
c.validations = append(c.validations, path)
return c
}
// Validations adds the specified input paths to the validation dependencies by
// RuleBuilder.Validations without modifying the command line.
func (c *RuleBuilderCommand) Validations(paths Paths) *RuleBuilderCommand {
for _, path := range paths {
c.Validation(path)
}
return c
}
// Output adds the specified output path to the command line. The path will also be added to the outputs returned by
// RuleBuilder.Outputs.
func (c *RuleBuilderCommand) Output(path WritablePath) *RuleBuilderCommand {
checkPathNotNil(path)
c.outputs = append(c.outputs, path)
return c.Text(c.PathForOutput(path))
}
// Outputs adds the specified output paths to the command line, separated by spaces. The paths will also be added to
// the outputs returned by RuleBuilder.Outputs.
func (c *RuleBuilderCommand) Outputs(paths WritablePaths) *RuleBuilderCommand {
for _, path := range paths {
c.Output(path)
}
return c
}
// OutputDir adds the output directory to the command line. This is only available when used with RuleBuilder.Sbox,
// and will be the temporary output directory managed by sbox, not the final one.
func (c *RuleBuilderCommand) OutputDir() *RuleBuilderCommand {
if !c.rule.sbox {
panic("OutputDir only valid with Sbox")
}
return c.Text(sboxOutDir)
}
// DepFile adds the specified depfile path to the paths returned by RuleBuilder.DepFiles and adds it to the command
// line, and causes RuleBuilder.Build file to set the depfile flag for ninja. If multiple depfiles are added to
// commands in a single RuleBuilder then RuleBuilder.Build will add an extra command to merge the depfiles together.
func (c *RuleBuilderCommand) DepFile(path WritablePath) *RuleBuilderCommand {
checkPathNotNil(path)
c.depFiles = append(c.depFiles, path)
return c.Text(c.PathForOutput(path))
}
// ImplicitOutput adds the specified output path to the dependencies returned by RuleBuilder.Outputs without modifying
// the command line.
func (c *RuleBuilderCommand) ImplicitOutput(path WritablePath) *RuleBuilderCommand {
c.outputs = append(c.outputs, path)
return c
}
// ImplicitOutputs adds the specified output paths to the dependencies returned by RuleBuilder.Outputs without modifying
// the command line.
func (c *RuleBuilderCommand) ImplicitOutputs(paths WritablePaths) *RuleBuilderCommand {
c.outputs = append(c.outputs, paths...)
return c
}
// ImplicitSymlinkOutput declares the specified path as an implicit output that
// will be a symlink instead of a regular file. Does not modify the command
// line.
func (c *RuleBuilderCommand) ImplicitSymlinkOutput(path WritablePath) *RuleBuilderCommand {
checkPathNotNil(path)
c.symlinkOutputs = append(c.symlinkOutputs, path)
return c.ImplicitOutput(path)
}
// ImplicitSymlinkOutputs declares the specified paths as implicit outputs that
// will be a symlinks instead of regular files. Does not modify the command
// line.
func (c *RuleBuilderCommand) ImplicitSymlinkOutputs(paths WritablePaths) *RuleBuilderCommand {
for _, path := range paths {
c.ImplicitSymlinkOutput(path)
}
return c
}
// SymlinkOutput declares the specified path as an output that will be a symlink
// instead of a regular file. Modifies the command line.
func (c *RuleBuilderCommand) SymlinkOutput(path WritablePath) *RuleBuilderCommand {
checkPathNotNil(path)
c.symlinkOutputs = append(c.symlinkOutputs, path)
return c.Output(path)
}
// SymlinkOutputsl declares the specified paths as outputs that will be symlinks
// instead of regular files. Modifies the command line.
func (c *RuleBuilderCommand) SymlinkOutputs(paths WritablePaths) *RuleBuilderCommand {
for _, path := range paths {
c.SymlinkOutput(path)
}
return c
}
// ImplicitDepFile adds the specified depfile path to the paths returned by RuleBuilder.DepFiles without modifying
// the command line, and causes RuleBuilder.Build file to set the depfile flag for ninja. If multiple depfiles
// are added to commands in a single RuleBuilder then RuleBuilder.Build will add an extra command to merge the
// depfiles together.
func (c *RuleBuilderCommand) ImplicitDepFile(path WritablePath) *RuleBuilderCommand {
c.depFiles = append(c.depFiles, path)
return c
}
// FlagWithInput adds the specified flag and input path to the command line, with no separator between them. The path
// will also be added to the dependencies returned by RuleBuilder.Inputs.
func (c *RuleBuilderCommand) FlagWithInput(flag string, path Path) *RuleBuilderCommand {
return c.Text(flag + c.addInput(path))
}
// FlagWithInputList adds the specified flag and input paths to the command line, with the inputs joined by sep
// and no separator between the flag and inputs. The input paths will also be added to the dependencies returned by
// RuleBuilder.Inputs.
func (c *RuleBuilderCommand) FlagWithInputList(flag string, paths Paths, sep string) *RuleBuilderCommand {
strs := make([]string, len(paths))
for i, path := range paths {
strs[i] = c.addInput(path)
}
return c.FlagWithList(flag, strs, sep)
}
// FlagForEachInput adds the specified flag joined with each input path to the command line. The input paths will also
// be added to the dependencies returned by RuleBuilder.Inputs. The result is identical to calling FlagWithInput for
// each input path.
func (c *RuleBuilderCommand) FlagForEachInput(flag string, paths Paths) *RuleBuilderCommand {
for _, path := range paths {
c.FlagWithInput(flag, path)
}
return c
}
// FlagWithOutput adds the specified flag and output path to the command line, with no separator between them. The path
// will also be added to the outputs returned by RuleBuilder.Outputs.
func (c *RuleBuilderCommand) FlagWithOutput(flag string, path WritablePath) *RuleBuilderCommand {
c.outputs = append(c.outputs, path)
return c.Text(flag + c.PathForOutput(path))
}
// FlagWithDepFile adds the specified flag and depfile path to the command line, with no separator between them. The path
// will also be added to the outputs returned by RuleBuilder.Outputs.
func (c *RuleBuilderCommand) FlagWithDepFile(flag string, path WritablePath) *RuleBuilderCommand {
c.depFiles = append(c.depFiles, path)
return c.Text(flag + c.PathForOutput(path))
}
// FlagWithRspFileInputList adds the specified flag and path to an rspfile to the command line, with
// no separator between them. The paths will be written to the rspfile. If sbox is enabled, the
// rspfile must be outside the sbox directory. The first use of FlagWithRspFileInputList in any
// RuleBuilderCommand of a RuleBuilder will use Ninja's rsp file support for the rule, additional
// uses will result in an auxiliary rules to write the rspFile contents.
func (c *RuleBuilderCommand) FlagWithRspFileInputList(flag string, rspFile WritablePath, paths Paths) *RuleBuilderCommand {
// Use an empty slice if paths is nil, the non-nil slice is used as an indicator that the rsp file must be
// generated.
if paths == nil {
paths = Paths{}
}
c.rspFiles = append(c.rspFiles, rspFileAndPaths{rspFile, paths})
if c.rule.sbox {
if _, isRel, _ := maybeRelErr(c.rule.outDir.String(), rspFile.String()); isRel {
panic(fmt.Errorf("FlagWithRspFileInputList rspfile %q must not be inside out dir %q",
rspFile.String(), c.rule.outDir.String()))
}
}
c.FlagWithArg(flag, c.PathForInput(rspFile))
return c
}
// String returns the command line.
func (c *RuleBuilderCommand) String() string {
return c.buf.String()
}
// RuleBuilderSboxProtoForTests takes the BuildParams for the manifest passed to RuleBuilder.Sbox()
// and returns sbox testproto generated by the RuleBuilder.
func RuleBuilderSboxProtoForTests(t *testing.T, ctx *TestContext, params TestingBuildParams) *sbox_proto.Manifest {
t.Helper()
content := ContentFromFileRuleForTests(t, ctx, params)
manifest := sbox_proto.Manifest{}
err := prototext.Unmarshal([]byte(content), &manifest)
if err != nil {
t.Fatalf("failed to unmarshal manifest: %s", err.Error())
}
return &manifest
}
func ninjaNameEscape(s string) string {
b := []byte(s)
escaped := false
for i, c := range b {
valid := (c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9') ||
(c == '_') ||
(c == '-') ||
(c == '.')
if !valid {
b[i] = '_'
escaped = true
}
}
if escaped {
s = string(b)
}
return s
}
// hashSrcFiles returns a hash of the list of source files. It is used to ensure the command line
// or the sbox textproto manifest change even if the input files are not listed on the command line.
func hashSrcFiles(srcFiles Paths) string {
h := sha256.New()
srcFileList := strings.Join(srcFiles.Strings(), "\n")
h.Write([]byte(srcFileList))
return fmt.Sprintf("%x", h.Sum(nil))
}
// BuilderContextForTesting returns a BuilderContext for the given config that can be used for tests
// that need to call methods that take a BuilderContext.
func BuilderContextForTesting(config Config) BuilderContext {
pathCtx := PathContextForTesting(config)
return builderContextForTests{
PathContext: pathCtx,
}
}
type builderContextForTests struct {
PathContext
}
func (builderContextForTests) Rule(PackageContext, string, blueprint.RuleParams, ...string) blueprint.Rule {
return nil
}
func (builderContextForTests) Build(PackageContext, BuildParams) {}
func writeRspFileRule(ctx BuilderContext, rspFile WritablePath, paths Paths) {
buf := &strings.Builder{}
err := response.WriteRspFile(buf, paths.Strings())
if err != nil {
// There should never be I/O errors writing to a bytes.Buffer.
panic(err)
}
WriteFileRule(ctx, rspFile, buf.String())
}