Example usage for org.objectweb.asm ClassVisitor ClassVisitor

Introduction

In this page you can find the example usage for org.objectweb.asm ClassVisitor ClassVisitor.

Prototype

public ClassVisitor(final int api) 

Source Link

Document

Constructs a new ClassVisitor .

Usage

From source file:com.github.rkaippully.jasm.test.ClassAnnotationsTest.java

License:Apache License

@Test
public void testAnnotations() {

    reader.accept(new ClassVisitor(ASM4) {
        private boolean visibleVisited;
        private boolean invisibleVisited;

        class VisibleAnnotationVisitor extends AnnotationVisitor {

            public VisibleAnnotationVisitor(String desc) {
                super(ASM4);
                assertEquals("javax/annotation/Generated", desc);
            }//from w  ww  .  jav  a2  s  .  c  om

            @Override
            public void visit(String name, Object value) {
                assertEquals("date", name);
                assertEquals("2001-07-04T12:08:56.235-0700", value);
            }

            @Override
            public void visitEnum(String name, String desc, String value) {
                fail("visitEnum called with name=" + name + ", value=" + value + ", desc = " + desc);
            }

            @Override
            public AnnotationVisitor visitAnnotation(String name, String desc) {
                fail("visitAnnotation called with name=" + name + ", desc = " + desc);
                return null;
            }

            @Override
            public AnnotationVisitor visitArray(String name) {
                assertEquals("value", name);
                return new AnnotationVisitor(ASM4) {
                    private List<Object> arrayEntries = new ArrayList<>(2);

                    @Override
                    public void visit(String name, Object value) {
                        arrayEntries.add(value);
                    }

                    @Override
                    public void visitEnd() {
                        assertEquals(2, arrayEntries.size());
                        assertEquals("codegen1", arrayEntries.get(0));
                        assertEquals("codegen2", arrayEntries.get(1));
                    }
                };
            }

            @Override
            public void visitEnd() {
                visibleVisited = true;
            }
        }

        class InvisibleAnnotationVisitor extends AnnotationVisitor {
            public InvisibleAnnotationVisitor(String desc) {
                super(ASM4);
                assertEquals("java/lang/Deprecated", desc);
            }

            @Override
            public void visit(String name, Object value) {
                fail("visit called with name=" + name + ", value=" + value);
            }

            @Override
            public void visitEnum(String name, String desc, String value) {
                fail("visitEnum called with name=" + name + ", value=" + value + ", desc = " + desc);
            }

            @Override
            public AnnotationVisitor visitAnnotation(String name, String desc) {
                fail("visitAnnotation called with name=" + name + ", desc = " + desc);
                return null;
            }

            @Override
            public AnnotationVisitor visitArray(String name) {
                fail("visitArray called with name=" + name);
                return null;
            }

            @Override
            public void visitEnd() {
                invisibleVisited = true;
            }
        }

        @Override
        public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
            if (visible)
                return new VisibleAnnotationVisitor(desc);
            else
                return new InvisibleAnnotationVisitor(desc);
        }

        @Override
        public void visitEnd() {
            assertTrue(visibleVisited);
            assertTrue(invisibleVisited);
        }
    }, 0);
}

---

From source file:com.github.rkaippully.jasm.test.ClassAttributesTest.java

License:Apache License

@Test
public void testSourceFileAndDebug() {
    reader.accept(new ClassVisitor(ASM4) {
        private String source;
        private String debug;

        @Override/*w w  w.j  a v a 2 s .  c  o  m*/
        public void visitSource(String source, String debug) {
            this.source = source;
            this.debug = debug;
        }

        @Override
        public void visitEnd() {
            // We need this outside visitSource() because visitSource() may
            // not get called if source and debug are null
            assertEquals("ClassAttributesTest.jasm", source);
            assertEquals("SMAP\n*E\n", debug);
        }
    }, 0);
}

---

From source file:com.github.rkaippully.jasm.test.ClassAttributesTest.java

License:Apache License

@Test
public void testInnerClass() {
    class InnerClassInfo implements Comparable<InnerClassInfo> {
        public String name;
        public String outerName;
        public String innerName;
        public int access;

        @Override/*from  w  ww  .j  a  v  a 2 s . c o  m*/
        public int compareTo(InnerClassInfo that) {
            return this.name.compareTo(that.name);
        }
    }

    reader.accept(new ClassVisitor(ASM4) {
        private Set<InnerClassInfo> innerClasses = new TreeSet<>();

        @Override
        public void visitInnerClass(String name, String outerName, String innerName, int access) {
            InnerClassInfo innerClass = new InnerClassInfo();
            innerClass.name = name;
            innerClass.outerName = outerName;
            innerClass.innerName = innerName;
            innerClass.access = access;
            innerClasses.add(innerClass);
        }

        @Override
        public void visitEnd() {
            assertEquals(3, innerClasses.size());

            Iterator<InnerClassInfo> itr = innerClasses.iterator();

            InnerClassInfo innerClass = itr.next();
            assertEquals("com/github/rkaippully/jasm/test/gen/ClassAttributesTest$InnerClass1",
                    innerClass.name);
            assertEquals("com/github/rkaippully/jasm/test/gen/ClassAttributesTest", innerClass.outerName);
            assertEquals("InnerClass1", innerClass.innerName);
            assertEquals(ACC_PROTECTED | ACC_STATIC, innerClass.access);

            innerClass = itr.next();
            assertEquals("com/github/rkaippully/jasm/test/gen/ClassAttributesTest$InnerClass2",
                    innerClass.name);
            assertNull(innerClass.outerName);
            assertEquals("InnerClass2", innerClass.innerName);
            assertEquals(ACC_FINAL, innerClass.access);

            innerClass = itr.next();
            assertEquals("com/github/rkaippully/jasm/test/gen/ClassAttributesTest$InnerClass3",
                    innerClass.name);
            assertNull(innerClass.outerName);
            assertNull(innerClass.innerName);
            assertEquals(ACC_FINAL, innerClass.access);
        }
    }, 0);
}

---

From source file:com.github.rkaippully.jasm.test.ClassAttributesTest.java

License:Apache License

@Test
public void testEnclosingMethod() {
    reader.accept(new ClassVisitor(ASM4) {
        private String outerClass;
        private String methodName;
        private String methodDesc;

        @Override//from  w w  w. j  a v a  2 s .com
        public void visitOuterClass(String outerClass, String methodName, String methodDesc) {
            this.outerClass = outerClass;
            this.methodName = methodName;
            this.methodDesc = methodDesc;
        }

        @Override
        public void visitEnd() {
            assertEquals("com/github/rkaippully/jasm/test/gen/ClassAttributesTestOuter", outerClass);
            assertEquals("enclosingMethod", methodName);
            assertEquals("V", methodDesc);
        }
    }, 0);
}

---

From source file:com.github.rkaippully.jasm.test.ClassAttributesTest.java

License:Apache License

@Test
public void testSynthetic() {
    reader.accept(new ClassVisitor(ASM4) {
        static final int ACC_SYNTHETIC_ATTRIBUTE = 0x40000;
        private boolean synthetic;

        @Override//from w  w  w  . ja v a  2s .  c o m
        public void visit(int version, int access, String name, String signature, String superName,
                String[] interfaces) {
            // This is how ASM reports synthetic attribute
            if ((access & ACC_SYNTHETIC_ATTRIBUTE) != 0)
                this.synthetic = true;
        }

        @Override
        public void visitEnd() {
            assertTrue(synthetic);
        }
    }, 0);
}

---

From source file:com.github.rkaippully.jasm.test.ClassAttributesTest.java

License:Apache License

@Test
public void testSignature() {
    reader.accept(new ClassVisitor(ASM4) {
        private String signature;

        @Override/* w  w w  . j  a  v  a  2  s .c  o  m*/
        public void visit(int version, int access, String name, String signature, String superName,
                String[] interfaces) {
            this.signature = signature;
        }

        @Override
        public void visitEnd() {
            assertEquals("<E:Ljava/lang/Object;>Ljava/lang/Object;", signature);
        }
    }, 0);
}

---

From source file:com.github.rkaippully.jasm.test.ClassAttributesTest.java

License:Apache License

@Test
public void testDeprecated() {
    reader.accept(new ClassVisitor(ASM4) {
        private boolean deprecated;

        @Override//w  w  w . j  a v  a 2  s  .  co m
        public void visit(int version, int access, String name, String signature, String superName,
                String[] interfaces) {
            if ((access & ACC_DEPRECATED) != 0)
                this.deprecated = true;
        }

        @Override
        public void visitEnd() {
            assertTrue(deprecated);
        }
    }, 0);
}

---

From source file:com.github.rkaippully.jasm.test.FieldsTest.java

License:Apache License

@Test
public void testAccessFlags() {
    ClassVisitor v = new ClassVisitor(ASM4) {
        private int access;

        @Override//from w w  w  .j a v a  2  s  .  co m
        public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
            this.access = access;
            return null;
        }

        @Override
        public void visitEnd() {
            assertEquals(ACC_PRIVATE, this.access);
        }
    };

    reader.accept(v, 0);
}

---

From source file:com.github.rkaippully.jasm.test.FieldsTest.java

License:Apache License

@Test
public void testFieldName() {
    ClassVisitor v = new ClassVisitor(ASM4) {
        private String name;

        @Override//from   w ww .jav a 2s .  co  m
        public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
            this.name = name;
            return null;
        }

        @Override
        public void visitEnd() {
            assertEquals("field1", this.name);
        }
    };

    reader.accept(v, 0);
}

---

From source file:com.github.rkaippully.jasm.test.FieldsTest.java

License:Apache License

@Test
public void testFieldDescriptor() {
    ClassVisitor v = new ClassVisitor(ASM4) {
        private String descriptor;

        @Override/*from www.  j a va 2s . co m*/
        public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
            this.descriptor = desc;
            return null;
        }

        @Override
        public void visitEnd() {
            assertEquals("[I", this.descriptor);
        }
    };

    reader.accept(v, 0);
}

---

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