@Override
protected boolean optimizeMethod(JProgram program, JMethod method) {
program.addEntryMethod(findMainMethod(program));
boolean didChange = false;
// TODO(jbrosenberg): remove loop when Pruner/CFA interaction is perfect.
while (TypeTightener.exec(program).didChange()) {
didChange = true;
}
return didChange;
}
public static JProgram construct(
TreeLogger logger, CompilationState state, Properties properties, String... entryPoints)
throws UnableToCompleteException {
PrecompileTaskOptions options = new PrecompileTaskOptionsImpl();
options.setEnableAssertions(true);
JProgram jprogram = AstConstructor.construct(logger, state, options, properties);
// Add entry methods for entry points.
for (String entryPoint : entryPoints) {
JDeclaredType entryType = jprogram.getFromTypeMap(entryPoint);
for (JMethod method : entryType.getMethods()) {
if (method.isStatic() && JProgram.isClinit(method)) {
jprogram.addEntryMethod(method);
}
}
}
// Tree is now ready to optimize.
return jprogram;
}
/**
* Given the source code to a Java class named <code>test.EntryPoint</code>, compiles it with
* emulated stack traces turned on and returns the JavaScript.
*/
private JsProgram compileClass(String... lines) throws UnableToCompleteException {
// Gather the Java source code to compile.
final String code = Joiner.on("\n").join(lines);
MockResourceOracle sourceOracle = new MockResourceOracle();
sourceOracle.addOrReplace(
new MockJavaResource("test.EntryPoint") {
@Override
public CharSequence getContent() {
return code;
}
});
sourceOracle.add(JavaAstConstructor.getCompilerTypes());
PrecompileTaskOptions options = new PrecompileTaskOptionsImpl();
options.setOutput(JsOutputOption.PRETTY);
options.setRunAsyncEnabled(false);
CompilerContext context =
new CompilerContext.Builder()
.options(options)
.minimalRebuildCache(new MinimalRebuildCache())
.build();
ConfigurationProperties config =
new ConfigurationProperties(Arrays.asList(recordFileNamesProp, recordLineNumbersProp));
CompilationState state =
CompilationStateBuilder.buildFrom(logger, context, sourceOracle.getResources(), null);
JProgram jProgram = AstConstructor.construct(logger, state, options, config);
jProgram.addEntryMethod(findMethod(jProgram, "onModuleLoad"));
if (inline) {
MethodInliner.exec(jProgram);
}
CatchBlockNormalizer.exec(jProgram);
// Construct the JavaScript AST.
// These passes are needed by GenerateJavaScriptAST.
ComputeCastabilityInformation.exec(jProgram, false);
ImplementCastsAndTypeChecks.exec(jProgram, false);
ArrayNormalizer.exec(jProgram);
StringTypeMapper typeMapper = new StringTypeMapper(jProgram);
ResolveRuntimeTypeReferences.exec(jProgram, typeMapper, TypeOrder.FREQUENCY);
Map<StandardSymbolData, JsName> symbolTable =
new TreeMap<StandardSymbolData, JsName>(new SymbolData.ClassIdentComparator());
BindingProperty stackMode = new BindingProperty("compiler.stackMode");
stackMode.addDefinedValue(new ConditionNone(), "EMULATED");
PermutationProperties properties =
new PermutationProperties(
Arrays.asList(
new BindingProperties(
new BindingProperty[] {stackMode}, new String[] {"EMULATED"}, config)));
JsProgram jsProgram = new JsProgram();
JavaToJavaScriptMap jjsmap =
GenerateJavaScriptAST.exec(
logger, jProgram, jsProgram, context, typeMapper, symbolTable, properties)
.getLeft();
// Finally, run the pass we care about.
JsStackEmulator.exec(jProgram, jsProgram, properties, jjsmap);
return jsProgram;
}