@Test
public void createLexYaccBuildRules() throws IOException {
BuildRuleResolver resolver = new BuildRuleResolver();
// Setup our C++ buck config with the paths to the lex/yacc binaries.
FakeProjectFilesystem filesystem = new FakeProjectFilesystem();
Path lexPath = Paths.get("lex");
filesystem.touch(lexPath);
Path yaccPath = Paths.get("yacc");
filesystem.touch(yaccPath);
BuckConfig buckConfig =
FakeBuckConfig.builder()
.setSections(
ImmutableMap.of(
"cxx",
ImmutableMap.of(
"lex", lexPath.toString(),
"yacc", yaccPath.toString())))
.setFilesystem(filesystem)
.build();
CxxPlatform cxxBuckConfig = DefaultCxxPlatforms.build(new CxxBuckConfig(buckConfig));
// Setup the target name and build params.
UnflavoredBuildTarget target =
BuildTargetFactory.newInstance("//:test").getUnflavoredBuildTarget();
BuildRuleParams params = new FakeBuildRuleParamsBuilder(BuildTarget.of(target)).build();
// Setup a genrule that generates our lex source.
String lexSourceName = "test.ll";
BuildTarget genruleTarget = BuildTargetFactory.newInstance("//:genrule_lex");
Genrule genrule =
(Genrule)
GenruleBuilder.newGenruleBuilder(genruleTarget).setOut(lexSourceName).build(resolver);
SourcePath lexSource = new BuildTargetSourcePath(genrule.getBuildTarget());
// Use a regular path for our yacc source.
String yaccSourceName = "test.yy";
SourcePath yaccSource = new TestSourcePath(yaccSourceName);
// Build the rules.
CxxHeaderSourceSpec actual =
CxxDescriptionEnhancer.createLexYaccBuildRules(
params,
resolver,
cxxBuckConfig,
ImmutableList.<String>of(),
ImmutableMap.of(lexSourceName, lexSource),
ImmutableList.<String>of(),
ImmutableMap.of(yaccSourceName, yaccSource));
// Grab the generated lex rule and verify it has the genrule as a dep.
Lex lex =
(Lex) resolver.getRule(CxxDescriptionEnhancer.createLexBuildTarget(target, lexSourceName));
assertNotNull(lex);
assertEquals(ImmutableSortedSet.<BuildRule>of(genrule), lex.getDeps());
// Grab the generated yacc rule and verify it has no deps.
Yacc yacc =
(Yacc)
resolver.getRule(CxxDescriptionEnhancer.createYaccBuildTarget(target, yaccSourceName));
assertNotNull(yacc);
assertEquals(ImmutableSortedSet.<BuildRule>of(), yacc.getDeps());
// Check the header/source spec is correct.
Path lexOutputSource = CxxDescriptionEnhancer.getLexSourceOutputPath(target, lexSourceName);
Path lexOutputHeader = CxxDescriptionEnhancer.getLexHeaderOutputPath(target, lexSourceName);
Path yaccOutputPrefix =
CxxDescriptionEnhancer.getYaccOutputPrefix(
target, Files.getNameWithoutExtension(yaccSourceName));
Path yaccOutputSource = Yacc.getSourceOutputPath(yaccOutputPrefix);
Path yaccOutputHeader = Yacc.getHeaderOutputPath(yaccOutputPrefix);
CxxHeaderSourceSpec expected =
CxxHeaderSourceSpec.of(
ImmutableMap.<Path, SourcePath>of(
target.getBasePath().resolve(lexSourceName + ".h"),
new BuildTargetSourcePath(lex.getBuildTarget(), lexOutputHeader),
target.getBasePath().resolve(yaccSourceName + ".h"),
new BuildTargetSourcePath(yacc.getBuildTarget(), yaccOutputHeader)),
ImmutableMap.of(
lexSourceName + ".cc",
CxxSource.of(
CxxSource.Type.CXX,
new BuildTargetSourcePath(lex.getBuildTarget(), lexOutputSource),
ImmutableList.<String>of()),
yaccSourceName + ".cc",
CxxSource.of(
CxxSource.Type.CXX,
new BuildTargetSourcePath(yacc.getBuildTarget(), yaccOutputSource),
ImmutableList.<String>of())));
assertEquals(expected, actual);
}
