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// Copyright 2018 The Bazel Authors. 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 com.google.devtools.build.lib.runtime.commands;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.buildtool.BuildRequest;
import com.google.devtools.build.lib.buildtool.BuildTool;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.query2.CommonQueryOptions;
import com.google.devtools.build.lib.query2.ConfiguredTargetQueryEnvironment;
import com.google.devtools.build.lib.query2.engine.QueryEnvironment.QueryFunction;
import com.google.devtools.build.lib.query2.engine.QueryException;
import com.google.devtools.build.lib.query2.engine.QueryExpression;
import com.google.devtools.build.lib.query2.engine.QueryParser;
import com.google.devtools.build.lib.runtime.BlazeCommand;
import com.google.devtools.build.lib.runtime.BlazeCommandResult;
import com.google.devtools.build.lib.runtime.BlazeRuntime;
import com.google.devtools.build.lib.runtime.Command;
import com.google.devtools.build.lib.runtime.CommandEnvironment;
import com.google.devtools.build.lib.util.ExitCode;
import com.google.devtools.common.options.OptionPriority.PriorityCategory;
import com.google.devtools.common.options.OptionsParser;
import com.google.devtools.common.options.OptionsParsingException;
import com.google.devtools.common.options.OptionsProvider;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
/** Handles the 'cquery' command on the Blaze command line. */
@Command(
name = "cquery",
builds = true,
inherits = {BuildCommand.class},
options = {CommonQueryOptions.class},
usesConfigurationOptions = true,
shortDescription = "Loads, analyzes, and queries the specified targets w/ configurations.",
allowResidue = true,
completion = "label",
help = "resource:cquery.txt"
)
public final class CqueryCommand implements BlazeCommand {
@Override
public void editOptions(OptionsParser optionsParser) {
try {
optionsParser.parse(
PriorityCategory.COMPUTED_DEFAULT,
"Options required by cquery",
ImmutableList.of("--nobuild"));
} catch (OptionsParsingException e) {
throw new IllegalStateException("Cquery's known options failed to parse", e);
}
}
@Override
public BlazeCommandResult exec(CommandEnvironment env, OptionsProvider options) {
if (options.getResidue().isEmpty()) {
env.getReporter()
.handle(
Event.error(
"Missing query expression. Use the 'help cquery' command for syntax and help."));
return BlazeCommandResult.exitCode(ExitCode.COMMAND_LINE_ERROR);
}
String query = Joiner.on(' ').join(options.getResidue());
HashMap<String, QueryFunction> functions = new HashMap<>();
for (QueryFunction queryFunction : ConfiguredTargetQueryEnvironment.FUNCTIONS) {
functions.put(queryFunction.getName(), queryFunction);
}
for (QueryFunction queryFunction : env.getRuntime().getQueryFunctions()) {
functions.put(queryFunction.getName(), queryFunction);
}
QueryExpression expr;
try {
expr = QueryParser.parse(query, functions);
} catch (QueryException e) {
env.getReporter()
.handle(Event.error("Error while parsing '" + query + "': " + e.getMessage()));
return BlazeCommandResult.exitCode(ExitCode.COMMAND_LINE_ERROR);
}
List<String> topLevelTargets = options.getOptions(CommonQueryOptions.class).universeScope;
Set<String> targetPatternSet = new LinkedHashSet<>();
if (topLevelTargets.isEmpty()) {
expr.collectTargetPatterns(targetPatternSet);
topLevelTargets = new ArrayList<>(targetPatternSet);
}
BlazeRuntime runtime = env.getRuntime();
BuildRequest request =
BuildRequest.create(
getClass().getAnnotation(Command.class).name(),
options,
runtime.getStartupOptionsProvider(),
topLevelTargets,
env.getReporter().getOutErr(),
env.getCommandId(),
env.getCommandStartTime());
ExitCode exitCode = new BuildTool(env).processRequest(request, null, expr).getExitCondition();
return BlazeCommandResult.exitCode(exitCode);
}
}
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