Examples with MakeVariableExpander com.google.devtools.build.lib.analysis.MakeVariableExpander used on opensource projects

Example 1 with MakeVariableExpander

use of com.google.devtools.build.lib.analysis.MakeVariableExpander in project bazel by bazelbuild.

the class ExtraActionFactory method create.

@Override
public ConfiguredTarget create(RuleContext context) throws RuleErrorException {
    // This rule doesn't produce any output when listed as a build target.
    // Only when used via the --experimental_action_listener flag,
    // this rule instructs the build system to add additional outputs.
    List<Artifact> resolvedData = Lists.newArrayList();
    Iterable<? extends TransitiveInfoCollection> tools = context.getPrerequisites("tools", Mode.HOST);
    CommandHelper commandHelper = new CommandHelper(context, tools, ImmutableMap.<Label, Iterable<Artifact>>of());
    resolvedData.addAll(context.getPrerequisiteArtifacts("data", Mode.DATA).list());
    List<String> outputTemplates = context.attributes().get("out_templates", Type.STRING_LIST);
    String command = commandHelper.resolveCommandAndExpandLabels(false, true);
    // This is a bit of a hack. We want to run the MakeVariableExpander first, so we expand $ on
    // variables that are expanded below with $$, which gets reverted to $ by the
    // MakeVariableExpander. This allows us to expand package-specific make variables in the
    // package where the extra action is defined, and then later replace the owner-specific make
    // variables when the extra action is instantiated.
    command = command.replace("$(EXTRA_ACTION_FILE)", "$$(EXTRA_ACTION_FILE)");
    command = command.replace("$(ACTION_ID)", "$$(ACTION_ID)");
    command = command.replace("$(OWNER_LABEL_DIGEST)", "$$(OWNER_LABEL_DIGEST)");
    command = command.replace("$(output ", "$$(output ");
    try {
        command = MakeVariableExpander.expand(command, new ConfigurationMakeVariableContext(context.getTarget().getPackage(), context.getConfiguration()));
    } catch (MakeVariableExpander.ExpansionException e) {
        context.ruleError(String.format("Unable to expand make variables: %s", e.getMessage()));
    }
    boolean requiresActionOutput = context.attributes().get("requires_action_output", Type.BOOLEAN);
    ExtraActionSpec spec = new ExtraActionSpec(commandHelper.getResolvedTools(), new CompositeRunfilesSupplier(commandHelper.getToolsRunfilesSuppliers()), resolvedData, outputTemplates, command, context.getLabel(), TargetUtils.getExecutionInfo(context.getRule()), requiresActionOutput);
    return new RuleConfiguredTargetBuilder(context).addProvider(ExtraActionSpec.class, spec).add(RunfilesProvider.class, RunfilesProvider.simple(Runfiles.EMPTY)).build();
}