Examples with JCClassDecl com.sun.tools.javac.tree.JCTree.JCClassDecl used on opensource projects

Example 26 with JCClassDecl

use of com.sun.tools.javac.tree.JCTree.JCClassDecl in project error-prone by google.

the class NonOverridingEquals method matchMethod.

@Override
public Description matchMethod(MethodTree methodTree, VisitorState state) {
    if (!MATCHER.matches(methodTree, state)) {
        return Description.NO_MATCH;
    }
    // this is a type-specific helper method and give advice to either inline it or rename it.
    if (enclosingClassOverridesEquals.matches(methodTree, state)) {
        return buildDescription(methodTree).setMessage(MESSAGE_BASE + "; if this is a type-specific helper for a method that does" + " override Object.equals, either inline it into the callers or rename it to" + " avoid ambiguity").build();
    }
    // Don't provide a fix if the method is static, non-public, or returns a boxed Boolean
    if (noFixMatcher.matches(methodTree, state)) {
        return describeMatch(methodTree);
    }
    JCClassDecl cls = (JCClassDecl) state.findEnclosing(ClassTree.class);
    if ((cls.getModifiers().flags & ENUM) != 0) {
        /* If the enclosing class is an enum, then just delete the equals method since enums
       * should always be compared for reference equality. Enum defines a final equals method for
       * just this reason. */
        return buildDescription(methodTree).setMessage(MESSAGE_BASE + "; enum instances can safely be compared by reference " + "equality, so please delete this").addFix(SuggestedFix.delete(methodTree)).build();
    } else {
        /* Otherwise, change the covariant equals method to override Object.equals. */
        SuggestedFix.Builder fix = SuggestedFix.builder();
        // Add @Override annotation if not present.
        if (ASTHelpers.getAnnotation(methodTree, Override.class) == null) {
            fix.prefixWith(methodTree, "@Override\n");
        }
        // Change method signature, substituting Object for parameter type.
        JCTree parameterType = (JCTree) methodTree.getParameters().get(0).getType();
        Name parameterName = ((JCVariableDecl) methodTree.getParameters().get(0)).getName();
        fix.replace(parameterType, "Object");
        // If there is a method body...
        if (methodTree.getBody() != null) {
            // Add type check at start
            String typeCheckStmt = "if (!(" + parameterName + " instanceof " + parameterType + ")) {\n" + "  return false;\n" + "}\n";
            fix.prefixWith(methodTree.getBody().getStatements().get(0), typeCheckStmt);
            // Cast all uses of the parameter name using a recursive TreeScanner.
            new CastScanner().scan(methodTree.getBody(), new CastState(parameterName, parameterType.toString(), fix));
        }
        return describeMatch(methodTree, fix.build());
    }
}

Example 27 with JCClassDecl

use of com.sun.tools.javac.tree.JCTree.JCClassDecl in project lombok by rzwitserloot.

the class JavacHandlerUtil method cloneSelfType.

public static JCExpression cloneSelfType(JavacNode childOfType) {
    JavacNode typeNode = childOfType;
    JavacTreeMaker maker = childOfType.getTreeMaker();
    while (typeNode != null && typeNode.getKind() != Kind.TYPE) typeNode = typeNode.up();
    if (typeNode != null && typeNode.get() instanceof JCClassDecl) {
        JCClassDecl type = (JCClassDecl) typeNode.get();
        ListBuffer<JCExpression> typeArgs = new ListBuffer<JCExpression>();
        if (!type.typarams.isEmpty()) {
            for (JCTypeParameter tp : type.typarams) {
                typeArgs.append(maker.Ident(tp.name));
            }
            return maker.TypeApply(maker.Ident(type.name), typeArgs.toList());
        } else {
            return maker.Ident(type.name);
        }
    } else {
        return null;
    }
}

Example 28 with JCClassDecl

use of com.sun.tools.javac.tree.JCTree.JCClassDecl in project lombok by rzwitserloot.

the class JavacHandlerUtil method isClassAndDoesNotHaveFlags.

public static boolean isClassAndDoesNotHaveFlags(JavacNode typeNode, int flags) {
    JCClassDecl typeDecl = null;
    if (typeNode.get() instanceof JCClassDecl)
        typeDecl = (JCClassDecl) typeNode.get();
    else
        return false;
    long typeDeclflags = typeDecl == null ? 0 : typeDecl.mods.flags;
    return (typeDeclflags & flags) == 0;
}

Example 29 with JCClassDecl

use of com.sun.tools.javac.tree.JCTree.JCClassDecl in project lombok by rzwitserloot.

the class HandleUtilityClass method changeModifiersAndGenerateConstructor.

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);
}

Example 30 with JCClassDecl

use of com.sun.tools.javac.tree.JCTree.JCClassDecl in project lombok by rzwitserloot.

the class JavacHandlerUtil method createFieldAccessor.

static JCExpression createFieldAccessor(JavacTreeMaker maker, JavacNode field, FieldAccess fieldAccess, JCExpression receiver) {
    boolean lookForGetter = lookForGetter(field, fieldAccess);
    GetterMethod getter = lookForGetter ? findGetter(field) : null;
    JCVariableDecl fieldDecl = (JCVariableDecl) field.get();
    if (getter == null) {
        if (receiver == null) {
            if ((fieldDecl.mods.flags & Flags.STATIC) == 0) {
                receiver = maker.Ident(field.toName("this"));
            } else {
                JavacNode containerNode = field.up();
                if (containerNode != null && containerNode.get() instanceof JCClassDecl) {
                    JCClassDecl container = (JCClassDecl) field.up().get();
                    receiver = maker.Ident(container.name);
                }
            }
        }
        return receiver == null ? maker.Ident(fieldDecl.name) : maker.Select(receiver, fieldDecl.name);
    }
    if (receiver == null)
        receiver = maker.Ident(field.toName("this"));
    JCMethodInvocation call = maker.Apply(List.<JCExpression>nil(), maker.Select(receiver, getter.name), List.<JCExpression>nil());
    return call;
}