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author | 2015-02-25 16:45:20 +0100 | |
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committer | 2015-02-25 16:45:20 +0100 | |
commit | d08b27fa9701fecfdb69e1b0d1ac2459efc2129b (patch) | |
tree | 5d50963026239ca5aebfb47ea5b8db7e814e57c8 /src/main/java/com/google/devtools/build/lib/query2/engine/KindFunction.java |
Update from Google.
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MOE_MIGRATED_REVID=85702957
Diffstat (limited to 'src/main/java/com/google/devtools/build/lib/query2/engine/KindFunction.java')
-rw-r--r-- | src/main/java/com/google/devtools/build/lib/query2/engine/KindFunction.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/query2/engine/KindFunction.java b/src/main/java/com/google/devtools/build/lib/query2/engine/KindFunction.java new file mode 100644 index 0000000000..7ae80b88db --- /dev/null +++ b/src/main/java/com/google/devtools/build/lib/query2/engine/KindFunction.java @@ -0,0 +1,70 @@ +// Copyright 2014 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 com.google.devtools.build.lib.query2.engine; + +import com.google.common.collect.ImmutableList; +import com.google.devtools.build.lib.query2.engine.QueryEnvironment.Argument; +import com.google.devtools.build.lib.query2.engine.QueryEnvironment.ArgumentType; + +import java.util.List; + +/** + * A kind(pattern, argument) filter expression, which computes the set of subset + * of nodes in 'argument' whose kind matches the unanchored regexp 'pattern'. + * + * <pre>expr ::= KIND '(' WORD ',' expr ')'</pre> + * + * Example patterns: + * <pre> + * ' file' Match all file targets. + * 'source file' Match all test source file targets. + * 'generated file' Match all test generated file targets. + * ' rule' Match all rule targets. + * 'foo_*' Match all rules starting with "foo_", + * 'test' Match all test (rule) targets. + * </pre> + * + * Note, the space before "file" is needed to prevent unwanted matches against + * (e.g.) "filegroup rule". + */ +class KindFunction extends RegexFilterExpression { + + KindFunction() { + } + + @Override + public String getName() { + return "kind"; + } + + @Override + protected String getPattern(List<Argument> args) { + return args.get(0).getWord(); + } + + @Override + public int getMandatoryArguments() { + return 2; + } + + @Override + public List<ArgumentType> getArgumentTypes() { + return ImmutableList.of(ArgumentType.WORD, ArgumentType.EXPRESSION); + } + + @Override + protected <T> String getFilterString(QueryEnvironment<T> env, List<Argument> args, T target) { + return env.getAccessor().getTargetKind(target); + } +} |