@Override
public final void init(ProcessingEnvironment env) {
super.init(env);
JavacTask.instance(env).addTaskListener(listener);
Context ctx = ((JavacProcessingEnvironment) processingEnv).getContext();
JavaCompiler compiler = JavaCompiler.instance(ctx);
compiler.shouldStopPolicyIfNoError =
CompileState.max(compiler.shouldStopPolicyIfNoError, CompileState.FLOW);
}
private static void openAnnotatedJava() {
// Create list with source code names
@SuppressWarnings("unchecked")
Vector<String> myfilelist = new Vector<String>(cmd.getArgList());
// Table that stores parsed compilation units
Hashtable<String, CompilationUnit> myjpunitlist = new Hashtable<String, CompilationUnit>();
// Declare outside, so filename can be used in case of exception.
// Generate AST with JavaParser
for (Enumeration<String> e = myfilelist.elements(); e.hasMoreElements(); ) {
String mysource = "";
CompilationUnit mycunit = null;
try {
// read filename
mysource = e.nextElement();
// Compile it with java parser.
mycunit = JavaParser.parse(new FileInputStream(mysource));
// Then fix the AST following the JC requirements
ComplyToJCVisitor myfixervisitor = new ComplyToJCVisitor();
mycunit = (CompilationUnit) myfixervisitor.visit(mycunit, new Integer(0));
// creates an input stream and parse it using Java Parser
myjpunitlist.put(mysource, mycunit);
if (cmd.hasOption("d")) {
// ASTDumpVisitor myjpvisitor = new ASTDumpVisitor();
DumpVisitor myjpvisitor = new DumpVisitor();
myjpvisitor.visit(myjpunitlist.get(mysource), null);
System.out.print(myjpvisitor.getSource());
}
} catch (com.github.javaparser.ParseException ex) {
System.out.println("Error: Parsing of Java file failed: " + mysource + ". Exiting...");
System.exit(1);
} catch (FileNotFoundException ex) {
System.out.println("Error: File not found: " + mysource + ". Exiting...");
System.exit(1);
}
}
// Building internals from Java Compiler
Context mycontext = new Context();
JavaCompiler myjcompiler = new JavaCompiler(mycontext);
JavaFileManager myfilemanager = mycontext.get(JavaFileManager.class);
// Phase that Javac may go to: Setting code generation
myjcompiler.shouldStopPolicyIfNoError = CompileState.GENERATE;
// Table that stores the Java Compiler's ASTs
List<JCCompilationUnit> ljctreelist = List.<JCCompilationUnit>nil();
// Convert to Java Parser AST to JCTree AST's
for (Enumeration<String> e = myjpunitlist.keys(); e.hasMoreElements(); ) {
// read filename
String mysource = e.nextElement();
CompilationUnit myjpunit = myjpunitlist.get(mysource);
JavaParser2JCTree translator = new JavaParser2JCTree(mycontext);
AJCCompilationUnit myjctreeunit = (AJCCompilationUnit) translator.visit(myjpunit, myjpunit);
// Setting additional information for Javac:
// - Source file. Otherwise it throws a NullPointerException
myjctreeunit.sourcefile = ((JavacFileManager) myfilemanager).getFileForInput(mysource);
// Storing in the list
ljctreelist = ljctreelist.append(myjctreeunit);
// Debug: Shows how the JCTree AST was generated. Output node types.
if (cmd.hasOption("d")) {
try {
Writer mystdout = new OutputStreamWriter(System.out);
(new PrintAstVisitor(mystdout, true)).visitTopLevel(myjctreeunit);
mystdout.flush();
} catch (Exception z) {
}
}
}
// Enter (phase I): starting to build symtable
Enter myenter = Enter.instance(mycontext);
myenter.main(ljctreelist);
// Enter (phase II): Finishing to build symtable
/* MemberEnter mymemberenter = MemberEnter.instance(mycontext);
mymemberenter.visitTopLevel(myjctreeunit); */
// Get the todo list generated by Enter phase
// From now on, the output of a phase is the input of the other.
Todo mytodo = Todo.instance(mycontext);
// atrribute: type-checking, name resolution, constant folding
// flow: deadcode elimination
// desugar: removes synctactic sugar: inner classes, class literals, assertions, foreachs
myjcompiler.desugar(myjcompiler.flow(myjcompiler.attribute(mytodo)));
// generate: produce bytecode or source code. Erases the whole AST
// myjcompiler.generate(myjcompiler.desugar(myjcompiler.flow(myjcompiler.attribute( mytodo))));
// Prints the Java program to output files and leave
for (ListIterator<JCCompilationUnit> i = ljctreelist.listIterator(); i.hasNext(); ) {
JCCompilationUnit myjctreeunit = i.next();
try {
Writer myoutputfile;
if (cmd.getOptionValue("o") == null) {
myoutputfile = new FileWriter(FileDescriptor.out);
} else {
myoutputfile = new FileWriter(myjctreeunit.sourcefile + ".new");
}
(new APretty(myoutputfile, true)).visitTopLevel(myjctreeunit);
myoutputfile.flush();
} catch (Exception e) {
// TODO - Check what to report in case of error.
}
}
}