Examples of org.ow2.asm.MethodVisitor

org.ow2.asm.MethodVisitor
A visitor to visit a Java method. The methods of this interface must be called in the following order: [ visitAnnotationDefault ] ( visitAnnotation | visitParameterAnnotation | visitAttribute )* [ visitCode ( visitFrame | visitXInsn | visitLabel | visitTryCatchBlock | visitLocalVariable | visitLineNumber)* visitMaxs ] visitEnd. In addition, the visitXInsn and visitLabel methods must be called in the sequential order of the bytecode instructions of the visited code, visitTryCatchBlock must be called before the labels passed as arguments have been visited, and the visitLocalVariable and visitLineNumber methods must be called after the labels passed as arguments have been visited. @author Eric Bruneton

        } catch (Exception e) {
        }
    }


    public void testIllegalByteInsnOperand() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitIntInsn(BIPUSH, Integer.MAX_VALUE);
            fail();
        } catch (Exception e) {
        }
    }

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        } catch (Exception e) {
        }
    }


    public void testIllegalShortInsnOperand() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitIntInsn(SIPUSH, Integer.MAX_VALUE);
            fail();
        } catch (Exception e) {
        }
    }

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        } catch (Exception e) {
        }
    }


    public void testIllegalVarInsnOperand() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitVarInsn(ALOAD, -1);
            fail();
        } catch (Exception e) {
        }
    }

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        } catch (Exception e) {
        }
    }


    public void testIllegalIntInsnOperand() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitIntInsn(NEWARRAY, 0);
            fail();
        } catch (Exception e) {
        }
    }

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        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }


    private void methodInsns(final ClassWriter cw) {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC,
                "methodInsns",
                "()V",
                null,
                null);
        // invokstatic
        mv.visitMethodInsn(INVOKESTATIC, "pkg/Insns", "ireturn", "()I");
        // invokespecial
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "pkg/Insns", "lreturn", "()J");
        // invokevirtual
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "pkg/Insns", "freturn", "()F");
        // invokeinterface
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEINTERFACE, "java/util/List", "size", "()I");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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        } catch (Exception e) {
        }
    }


    public void testIllegalTypeInsnOperand() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitTypeInsn(NEW, "[I");
            fail();
        } catch (Exception e) {
        }
    }

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        } catch (Exception e) {
        }
    }


    public void testIllegalLabelInsnOperand() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        Label l = new Label();
        mv.visitLabel(l);
        try {
            mv.visitLabel(l);
            fail();
        } catch (Exception e) {
        }
    }

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                String name,
                String desc,
                String signature,
                String[] exceptions)
            {
                final MethodVisitor next = cv.visitMethod(access,
                        name,
                        desc,
                        signature,
                        exceptions);
                if (next == null) {

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        } catch (Exception e) {
        }
    }


    public void testIllegalTableSwitchParameters1() {
        MethodVisitor mv = new CheckMethodAdapter(new EmptyVisitor());
        mv.visitCode();
        try {
            mv.visitTableSwitchInsn(1, 0, new Label(), new Label[0]);
            fail();
        } catch (Exception e) {
        }
    }

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        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }


    private void monitorInsns(final ClassWriter cw) {
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC,
                "monitorInsns",
                "()V",
                null,
                null);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitInsn(MONITORENTER);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitInsn(MONITOREXIT);
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

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