Java Code Examples for com.sun.tools.javac.code.Flags#GENERATEDCONSTR

public void visitClassDef(JCClassDecl node) {
    super.visitClassDef(node);
    // remove generated constructor that may have been added during attribution:
    List<JCTree> beforeConstructor = List.nil();
    List<JCTree> defs = node.defs;
    while (defs.nonEmpty() && !defs.head.hasTag(Tag.METHODDEF)) {
        beforeConstructor = beforeConstructor.prepend(defs.head);
        defs = defs.tail;
    }
    if (defs.nonEmpty() &&
        (((JCMethodDecl) defs.head).mods.flags & Flags.GENERATEDCONSTR) != 0) {
        defs = defs.tail;
        while (beforeConstructor.nonEmpty()) {
            defs = defs.prepend(beforeConstructor.head);
            beforeConstructor = beforeConstructor.tail;
        }
        node.defs = defs;
    }
    if (node.sym != null) {
        node.sym.completer = new ImplicitCompleter(topLevel);
    }
    node.sym = null;
}
 

protected final MethodTree rewriteChildren(MethodTree tree) {
       ModifiersTree mods = (ModifiersTree)translate(tree.getModifiers());
ExpressionTree restype = (ExpressionTree)translateClassRef(tree.getReturnType());
List<? extends TypeParameterTree> typarams = translateStable(tree.getTypeParameters());
List<? extends VariableTree> params = translateStable(tree.getParameters());
List<? extends ExpressionTree> thrown = translate(tree.getThrows());
       ExpressionTree defaultValue = (ExpressionTree)translate(tree.getDefaultValue());
BlockTree body = (BlockTree)translate(tree.getBody());
       
if (restype!=tree.getReturnType() || !typarams.equals(tree.getTypeParameters()) || 
           !params.equals(tree.getParameters()) || !thrown.equals(tree.getThrows()) || 
           mods!=tree.getModifiers() || defaultValue!=tree.getDefaultValue() || 
           body!=tree.getBody()) {
           if ((((JCModifiers) mods).flags & Flags.GENERATEDCONSTR) != 0) {
               mods = make.Modifiers(((JCModifiers) mods).flags & ~Flags.GENERATEDCONSTR, mods.getAnnotations());
           }
           MethodTree n  = make.Method(mods, tree.getName().toString(), restype, typarams,
                                       params, thrown, body, defaultValue);
           
    copyCommentTo(tree,n);
           copyPosTo(tree,n);
    tree = n;
}
return tree;
   }
 

public ModifiersTree removeModifiersModifier(ModifiersTree modifiers, Modifier modifier) {
    long c = ((JCModifiers) modifiers).flags & ~Flags.GENERATEDCONSTR;
    switch (modifier) {
        case ABSTRACT: c = c & ~Flags.ABSTRACT; break;
        case FINAL: c = c & ~Flags.FINAL; break;
        case NATIVE: c = c & ~Flags.NATIVE; break;
        case PRIVATE: c = c & ~Flags.PRIVATE; break;
        case PROTECTED: c = c & ~Flags.PROTECTED; break;
        case PUBLIC: c = c & ~Flags.PUBLIC; break;
        case STATIC: c = c & ~Flags.STATIC; break;
        case STRICTFP: c = c & ~Flags.STRICTFP; break;
        case SYNCHRONIZED: c = c & ~Flags.SYNCHRONIZED; break;
        case TRANSIENT: c = c & ~Flags.TRANSIENT; break;
        case VOLATILE: c = c & ~Flags.VOLATILE; break;
        case DEFAULT: c = c & ~Flags.DEFAULT; break;
        default:
            break;
    }
    return Modifiers(c, modifiers.getAnnotations());
}
 

@Override
void process(Diagnostic<? extends JavaFileObject> diagnostic) {
    Symbol methodSym = (Symbol)methodSym(diagnostic);
    if ((methodSym.flags() & Flags.GENERATEDCONSTR) != 0) {
        //skip resolution of default constructor (put there by javac)
        return;
    }
    Candidate c = getCandidateAtPos(methodSym,
            asJCDiagnostic(diagnostic).getLineNumber(),
            asJCDiagnostic(diagnostic).getColumnNumber());
    if (c == null) {
        return; //nothing to check
    }

    if (c.applicable().length == 0 && c.mostSpecific()) {
        error("Inapplicable method cannot be most specific " + methodSym);
    }

    if (isApplicable(diagnostic) != Arrays.asList(c.applicable()).contains(phase)) {
        error("Invalid candidate's applicability " + methodSym);
    }

    if (success) {
        for (Phase p : c.applicable()) {
            if (phase.ordinal() < p.ordinal()) {
                error("Invalid phase " + p + " on method " + methodSym);
            }
        }
    }

    if (Arrays.asList(c.applicable()).contains(phase)) { //applicable
        if (c.mostSpecific() != mostSpecific) {
            error("Invalid most specific value for method " + methodSym + " " + new ElementKey(methodSym).key);
        }
        MethodType mtype = getSig(diagnostic);
        if (mtype != null) {
            checkSig(c, methodSym, mtype);
        }
    }
}
 

@Override
void process(Diagnostic<? extends JavaFileObject> diagnostic) {
    Symbol methodSym = (Symbol)methodSym(diagnostic);
    if ((methodSym.flags() & Flags.GENERATEDCONSTR) != 0) {
        //skip resolution of default constructor (put there by javac)
        return;
    }
    Candidate c = getCandidateAtPos(methodSym,
            asJCDiagnostic(diagnostic).getLineNumber(),
            asJCDiagnostic(diagnostic).getColumnNumber());
    if (c == null) {
        return; //nothing to check
    }

    if (c.applicable().length == 0 && c.mostSpecific()) {
        error("Inapplicable method cannot be most specific " + methodSym);
    }

    if (isApplicable(diagnostic) != Arrays.asList(c.applicable()).contains(phase)) {
        error("Invalid candidate's applicability " + methodSym);
    }

    if (success) {
        for (Phase p : c.applicable()) {
            if (phase.ordinal() < p.ordinal()) {
                error("Invalid phase " + p + " on method " + methodSym);
            }
        }
    }

    if (Arrays.asList(c.applicable()).contains(phase)) { //applicable
        if (c.mostSpecific() != mostSpecific) {
            error("Invalid most specific value for method " + methodSym + " " + new ElementKey(methodSym).key);
        }
        MethodType mtype = getSig(diagnostic);
        if (mtype != null) {
            checkSig(c, methodSym, mtype);
        }
    }
}
 

@Override
void process(Diagnostic<? extends JavaFileObject> diagnostic) {
    Symbol methodSym = (Symbol)methodSym(diagnostic);
    if ((methodSym.flags() & Flags.GENERATEDCONSTR) != 0) {
        //skip resolution of default constructor (put there by javac)
        return;
    }
    Candidate c = getCandidateAtPos(methodSym,
            asJCDiagnostic(diagnostic).getLineNumber(),
            asJCDiagnostic(diagnostic).getColumnNumber());
    if (c == null) {
        return; //nothing to check
    }

    if (c.applicable().length == 0 && c.mostSpecific()) {
        error("Inapplicable method cannot be most specific " + methodSym);
    }

    if (isApplicable(diagnostic) != Arrays.asList(c.applicable()).contains(phase)) {
        error("Invalid candidate's applicability " + methodSym);
    }

    if (success) {
        for (Phase p : c.applicable()) {
            if (phase.ordinal() < p.ordinal()) {
                error("Invalid phase " + p + " on method " + methodSym);
            }
        }
    }

    if (Arrays.asList(c.applicable()).contains(phase)) { //applicable
        if (c.mostSpecific() != mostSpecific) {
            error("Invalid most specific value for method " + methodSym + " " + new ElementKey(methodSym).key);
        }
        MethodType mtype = getSig(diagnostic);
        if (mtype != null) {
            checkSig(c, methodSym, mtype);
        }
    }
}
 

@Override
void process(Diagnostic<? extends JavaFileObject> diagnostic) {
    Symbol methodSym = (Symbol)methodSym(diagnostic);
    if ((methodSym.flags() & Flags.GENERATEDCONSTR) != 0) {
        //skip resolution of default constructor (put there by javac)
        return;
    }
    Candidate c = getCandidateAtPos(methodSym,
            asJCDiagnostic(diagnostic).getLineNumber(),
            asJCDiagnostic(diagnostic).getColumnNumber());
    if (c == null) {
        return; //nothing to check
    }

    if (c.applicable().length == 0 && c.mostSpecific()) {
        error("Inapplicable method cannot be most specific " + methodSym);
    }

    if (isApplicable(diagnostic) != Arrays.asList(c.applicable()).contains(phase)) {
        error("Invalid candidate's applicability " + methodSym);
    }

    if (success) {
        for (Phase p : c.applicable()) {
            if (phase.ordinal() < p.ordinal()) {
                error("Invalid phase " + p + " on method " + methodSym);
            }
        }
    }

    if (Arrays.asList(c.applicable()).contains(phase)) { //applicable
        if (c.mostSpecific() != mostSpecific) {
            error("Invalid most specific value for method " + methodSym + " " + new ElementKey(methodSym).key);
        }
        MethodType mtype = getSig(diagnostic);
        if (mtype != null) {
            checkSig(c, methodSym, mtype);
        }
    }
}
 

@Override
void process(Diagnostic<? extends JavaFileObject> diagnostic) {
    Symbol methodSym = (Symbol)methodSym(diagnostic);
    if ((methodSym.flags() & Flags.GENERATEDCONSTR) != 0) {
        //skip resolution of default constructor (put there by javac)
        return;
    }
    Candidate c = getCandidateAtPos(methodSym,
            asJCDiagnostic(diagnostic).getLineNumber(),
            asJCDiagnostic(diagnostic).getColumnNumber());
    if (c == null) {
        return; //nothing to check
    }

    if (c.applicable().length == 0 && c.mostSpecific()) {
        error("Inapplicable method cannot be most specific " + methodSym);
    }

    if (isApplicable(diagnostic) != Arrays.asList(c.applicable()).contains(phase)) {
        error("Invalid candidate's applicability " + methodSym);
    }

    if (success) {
        for (Phase p : c.applicable()) {
            if (phase.ordinal() < p.ordinal()) {
                error("Invalid phase " + p + " on method " + methodSym);
            }
        }
    }

    if (Arrays.asList(c.applicable()).contains(phase)) { //applicable
        if (c.mostSpecific() != mostSpecific) {
            error("Invalid most specific value for method " + methodSym + " " + new ElementKey(methodSym).key);
        }
        MethodType mtype = getSig(diagnostic);
        if (mtype != null) {
            checkSig(c, methodSym, mtype);
        }
    }
}
 

private void changeModifiersAndGenerateConstructor(JavacNode typeNode, JavacNode errorNode) {
	JCClassDecl classDecl = (JCClassDecl) typeNode.get();
	
	boolean makeConstructor = true;
	
	classDecl.mods.flags |= Flags.FINAL;
	
	boolean markStatic = true;
	
	if (typeNode.up().getKind() == Kind.COMPILATION_UNIT) markStatic = false;
	if (markStatic && typeNode.up().getKind() == Kind.TYPE) {
		JCClassDecl typeDecl = (JCClassDecl) typeNode.up().get();
		if ((typeDecl.mods.flags & Flags.INTERFACE) != 0) markStatic = false;
	}
	
	if (markStatic) classDecl.mods.flags |= Flags.STATIC;
	
	for (JavacNode element : typeNode.down()) {
		if (element.getKind() == Kind.FIELD) {
			JCVariableDecl fieldDecl = (JCVariableDecl) element.get();
			fieldDecl.mods.flags |= Flags.STATIC;
		} else if (element.getKind() == Kind.METHOD) {
			JCMethodDecl methodDecl = (JCMethodDecl) element.get();
			if (methodDecl.name.contentEquals("<init>")) {
				if (getGeneratedBy(methodDecl) == null && (methodDecl.mods.flags & Flags.GENERATEDCONSTR) == 0) {
					element.addError("@UtilityClasses cannot have declared constructors.");
					makeConstructor = false;
					continue;
				}
			}
			
			methodDecl.mods.flags |= Flags.STATIC;
		} else if (element.getKind() == Kind.TYPE) {
			JCClassDecl innerClassDecl = (JCClassDecl) element.get();
			innerClassDecl.mods.flags |= Flags.STATIC;
		}
	}
	
	if (makeConstructor) createPrivateDefaultConstructor(typeNode);
}
 

@Override
public void visitMethodDef(JCTree.JCMethodDecl method) {
  if ((method.mods.flags & Flags.GENERATEDCONSTR) != 0) {
    // If this is the constructor for an anonymous inner class, refrain from checking the
    // compiler-generated method signature. Don't skip scanning the method body though, there
    // might have been an anonymous initializer which still needs to be checked.
    scan(method.body);
  } else {
    super.visitMethodDef(method);
  }
}
 

static boolean isSynthetic(CompilationInfo info, CompilationUnitTree cut, Tree leaf) throws NullPointerException {
    JCTree tree = (JCTree) leaf;
    
    if (tree.pos == (-1))
        return true;
    
    if (leaf.getKind() == Kind.METHOD) {
        //check for synthetic constructor:
        return (((JCTree.JCMethodDecl)leaf).mods.flags & Flags.GENERATEDCONSTR) != 0L;
    }
    
    //check for synthetic superconstructor call:
    if (leaf.getKind() == Kind.EXPRESSION_STATEMENT) {
        ExpressionStatementTree est = (ExpressionStatementTree) leaf;
        
        if (est.getExpression().getKind() == Kind.METHOD_INVOCATION) {
            MethodInvocationTree mit = (MethodInvocationTree) est.getExpression();
            
            if (mit.getMethodSelect().getKind() == Kind.IDENTIFIER) {
                IdentifierTree it = (IdentifierTree) mit.getMethodSelect();
                
                if ("super".equals(it.getName().toString())) {
                    SourcePositions sp = info.getTrees().getSourcePositions();
                    
                    return sp.getEndPosition(cut, leaf) == (-1);
                }
            }
        }
    }
    
    return false;
}
 

private static boolean isSynthetic(CompilationUnitTree cut, Tree leaf) throws NullPointerException {
    JCTree tree = (JCTree) leaf;

    if (tree.pos == (-1))
        return true;

    if (leaf.getKind() == Kind.METHOD) {
        //check for synthetic constructor:
        return (((JCMethodDecl)leaf).mods.flags & Flags.GENERATEDCONSTR) != 0L;
    }

    //check for synthetic superconstructor call:
    if (cut != null && leaf.getKind() == Kind.EXPRESSION_STATEMENT) {
        ExpressionStatementTree est = (ExpressionStatementTree) leaf;

        if (est.getExpression().getKind() == Kind.METHOD_INVOCATION) {
            MethodInvocationTree mit = (MethodInvocationTree) est.getExpression();

            if (mit.getMethodSelect().getKind() == Kind.IDENTIFIER) {
                IdentifierTree it = (IdentifierTree) mit.getMethodSelect();

                if ("super".equals(it.getName().toString())) {
                    return ((JCCompilationUnit) cut).endPositions.getEndPos(tree) == (-1);
                }
            }
        }
    }

    return false;
}
 

boolean isSynthetic(CompilationUnitTree cut, Tree leaf) throws NullPointerException {
    JCTree tree = (JCTree) leaf;
    
    if (tree.pos == (-1))
        return true;
    
    if (leaf.getKind() == Kind.METHOD) {
        //check for synthetic constructor:
        return (((JCMethodDecl)leaf).mods.flags & Flags.GENERATEDCONSTR) != 0L;
    }
    
    //check for synthetic superconstructor call:
    if (leaf.getKind() == Kind.EXPRESSION_STATEMENT) {
        ExpressionStatementTree est = (ExpressionStatementTree) leaf;
        
        if (est.getExpression().getKind() == Kind.METHOD_INVOCATION) {
            MethodInvocationTree mit = (MethodInvocationTree) est.getExpression();
            
            if (mit.getMethodSelect().getKind() == Kind.IDENTIFIER) {
                IdentifierTree it = (IdentifierTree) mit.getMethodSelect();
                
                if ("super".equals(it.getName().toString())) {
                    SourcePositions sp = info.getTrees().getSourcePositions();
                    
                    return sp.getEndPosition(cut, leaf) == (-1);
                }
            }
        }
    }
    
    return false;
}
 

@Override public void visitMethod(JavacNode node, JCMethodDecl method) {
	final String type;
	if (method.name.contentEquals("<init>")) {
		if ((method.mods.flags & Flags.GENERATEDCONSTR) != 0) {
			type = "DEFAULTCONSTRUCTOR";
		} else type = "CONSTRUCTOR";
	} else type = "METHOD";
	print("<%s %s> returns: %s", type, method.name, method.restype);
	indent++;
	if (printContent) {
		if (method.body == null) print("(ABSTRACT)");
		else print("%s", method.body);
		disablePrinting++;
	}
}
 

/**
 * Returns the start position of the method's name.  In particular,
 * works properly for constructors, for which the name field in the
 * AST is always "<init>" instead of the name from the source.
 *
 * @param node AST node of method declaration
 * @return position of method name (from {@link JCMethodDecl#sym}) in source
 */
private int findMethodName(JCMethodDecl node) {
  String sym = node.sym.toString();
  String name = sym.substring(0, sym.indexOf('('));
  JCModifiers mods = node.getModifiers();
  JCBlock body = node.body;
  if ((mods.flags & Flags.GENERATEDCONSTR) != 0) { return Position.NOPOS; }
  int nodeStart = node.getStartPosition();
  int nodeEnd = node.getEndPosition(tree.endPositions);
  int nodeLength = nodeEnd - nodeStart;
  int modsLength = mods.getEndPosition(tree.endPositions)
      - mods.getStartPosition();  // can't trust string length!
  int bodyLength = body == null ? 1
      : body.getEndPosition(tree.endPositions) - body.getStartPosition();
  int start = nodeStart + modsLength;
  int end = nodeStart + nodeLength - bodyLength;
  int angle = name.lastIndexOf('>');  // check for type params
  if (angle >= 0) { name = name.substring(angle + 1); }

  try {
    CharSequence s = tree.getSourceFile().getCharContent(true);
    String regex = "\\b" + Pattern.quote(name) + "\\b";  // sufficient?
    Pattern pat = Pattern.compile(regex, Pattern.MULTILINE);
    Matcher mat = pat.matcher(s).region(start, end);
    return mat.find() ? mat.start() : Position.NOPOS;
  } catch (IOException e) {
    throw new RuntimeException(e);
  }
}
 

public BlockTree reattrMethodBody(Context context, Scope scope, MethodTree methodToReparse, BlockTree block) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        Attr attr = Attr.instance(context);
//        assert ((JCTree.JCMethodDecl)methodToReparse).localEnv != null;
        JCTree.JCMethodDecl tree = (JCTree.JCMethodDecl) methodToReparse;
        final Names names = Names.instance(context);
        final Symtab syms = Symtab.instance(context);
        final TypeEnter typeEnter = TypeEnter.instance(context);
        final Log log = Log.instance(context);
        final TreeMaker make = TreeMaker.instance(context);
        final Env<AttrContext> env = ((JavacScope) scope).getEnv();//this is a copy anyway...
        final Symbol.ClassSymbol owner = env.enclClass.sym;
        if (tree.name == names.init && !owner.type.isErroneous() && owner.type != syms.objectType) {
            JCTree.JCBlock body = tree.body;
            if (body.stats.isEmpty() || !TreeInfo.isSelfCall(body.stats.head)) {
                body.stats = body.stats.
                prepend(make.at(body.pos).Exec(make.Apply(com.sun.tools.javac.util.List.nil(), make.Ident(names._super), com.sun.tools.javac.util.List.nil())));
            } else if ((env.enclClass.sym.flags() & Flags.ENUM) != 0 &&
                (tree.mods.flags & Flags.GENERATEDCONSTR) == 0 &&
                TreeInfo.isSuperCall(body.stats.head)) {
                // enum constructors are not allowed to call super
                // directly, so make sure there aren't any super calls
                // in enum constructors, except in the compiler
                // generated one.
                log.error(tree.body.stats.head.pos(),
                          new JCDiagnostic.Error("compiler",
                                    "call.to.super.not.allowed.in.enum.ctor",
                                    env.enclClass.sym));
                    }
        }
        attr.attribStat((JCTree.JCBlock)block, env);
        return block;
    }
 

@Override @DefinedBy(Api.LANGUAGE_MODEL)
public Origin getOrigin(Element e) {
    Symbol sym = cast(Symbol.class, e);
    if ((sym.flags() & Flags.GENERATEDCONSTR) != 0)
        return Origin.MANDATED;
    //TypeElement.getEnclosedElements does not return synthetic elements,
    //and most synthetic elements are not read from the classfile anyway:
    return Origin.EXPLICIT;
}
 

@Override
void process(Diagnostic<? extends JavaFileObject> diagnostic) {
    Symbol methodSym = (Symbol)methodSym(diagnostic);
    if ((methodSym.flags() & Flags.GENERATEDCONSTR) != 0) {
        //skip resolution of default constructor (put there by javac)
        return;
    }
    Candidate c = getCandidateAtPos(methodSym,
            asJCDiagnostic(diagnostic).getLineNumber(),
            asJCDiagnostic(diagnostic).getColumnNumber());
    if (c == null) {
        return; //nothing to check
    }

    if (c.applicable().length == 0 && c.mostSpecific()) {
        error("Inapplicable method cannot be most specific " + methodSym);
    }

    if (isApplicable(diagnostic) != Arrays.asList(c.applicable()).contains(phase)) {
        error("Invalid candidate's applicability " + methodSym);
    }

    if (success) {
        for (Phase p : c.applicable()) {
            if (phase.ordinal() < p.ordinal()) {
                error("Invalid phase " + p + " on method " + methodSym);
            }
        }
    }

    if (Arrays.asList(c.applicable()).contains(phase)) { //applicable
        if (c.mostSpecific() != mostSpecific) {
            error("Invalid most specific value for method " + methodSym + " " + new ElementKey(methodSym).key);
        }
        MethodType mtype = getSig(diagnostic);
        if (mtype != null) {
            checkSig(c, methodSym, mtype);
        }
    }
}
 

@Override
void process(Diagnostic<? extends JavaFileObject> diagnostic) {
    Symbol methodSym = (Symbol)methodSym(diagnostic);
    if ((methodSym.flags() & Flags.GENERATEDCONSTR) != 0) {
        //skip resolution of default constructor (put there by javac)
        return;
    }
    Candidate c = getCandidateAtPos(methodSym,
            asJCDiagnostic(diagnostic).getLineNumber(),
            asJCDiagnostic(diagnostic).getColumnNumber());
    if (c == null) {
        return; //nothing to check
    }

    if (c.applicable().length == 0 && c.mostSpecific()) {
        error("Inapplicable method cannot be most specific " + methodSym);
    }

    if (isApplicable(diagnostic) != Arrays.asList(c.applicable()).contains(phase)) {
        error("Invalid candidate's applicability " + methodSym);
    }

    if (success) {
        for (Phase p : c.applicable()) {
            if (phase.ordinal() < p.ordinal()) {
                error("Invalid phase " + p + " on method " + methodSym);
            }
        }
    }

    if (Arrays.asList(c.applicable()).contains(phase)) { //applicable
        if (c.mostSpecific() != mostSpecific) {
            error("Invalid most specific value for method " + methodSym + " " + new ElementKey(methodSym).key);
        }
        MethodType mtype = getSig(diagnostic);
        if (mtype != null) {
            checkSig(c, methodSym, mtype);
        }
    }
}
 

public boolean isSynthetic(Element e) {
    return (((Symbol) e).flags() & Flags.SYNTHETIC) != 0 || (((Symbol) e).flags() & Flags.GENERATEDCONSTR) != 0;
}