src/org/nutz/repo/org/objectweb/asm/MethodWriter.java
private void visitImplicitFirstFrame() {
        // There can be at most descriptor.length() + 1 locals
        int frameIndex = startFrame(0, descriptor.length() + 1, 0);
        if ((access & Opcodes.ACC_STATIC) == 0) {
            if ((access & ACC_CONSTRUCTOR) == 0) {
                frame[frameIndex++] = Frame.OBJECT | cw.addType(cw.thisName);
            } else {
                frame[frameIndex++] = 6; // Opcodes.UNINITIALIZED_THIS;
            }
        }
        int i = 1;
        loop: while (true) {
            int j = i;
            switch (descriptor.charAt(i++)) {
            case 'Z':
            case 'C':
            case 'B':
            case 'S':
            case 'I':
                frame[frameIndex++] = 1; // Opcodes.INTEGER;
                break;
            case 'F':
                frame[frameIndex++] = 2; // Opcodes.FLOAT;
                break;
            case 'J':
                frame[frameIndex++] = 4; // Opcodes.LONG;
                break;
            case 'D':
                frame[frameIndex++] = 3; // Opcodes.DOUBLE;
                break;
            case '[':
                while (descriptor.charAt(i) == '[') {
                    ++i;
                }
                if (descriptor.charAt(i) == 'L') {
                    ++i;
                    while (descriptor.charAt(i) != ';') {
                        ++i;
                    }
                }
                frame[frameIndex++] = Frame.OBJECT
                        | cw.addType(descriptor.substring(j, ++i));
                break;
            case 'L':
                while (descriptor.charAt(i) != ';') {
                    ++i;
                }
                frame[frameIndex++] = Frame.OBJECT
                        | cw.addType(descriptor.substring(j + 1, i++));
                break;
            default:
                break loop;
            }
        }
        frame[1] = frameIndex - 3;
        endFrame();
    }
private void visitImplicitFirstFrame() {
        // There can be at most descriptor.length() + 1 locals
        int frameIndex = startFrame(0, descriptor.length() + 1, 0);
        if ((access & Opcodes.ACC_STATIC) == 0) {
            if ((access & ACC_CONSTRUCTOR) == 0) {
                frame[frameIndex++] = Frame.OBJECT | cw.addType(cw.thisName);
            } else {
                frame[frameIndex++] = 6; // Opcodes.UNINITIALIZED_THIS;
            }
        }
        int i = 1;
        loop: while (true) {
            int j = i;
            switch (descriptor.charAt(i++)) {
            case 'Z':
            case 'C':
            case 'B':
            case 'S':
            case 'I':
                frame[frameIndex++] = 1; // Opcodes.INTEGER;
                break;
            case 'F':
                frame[frameIndex++] = 2; // Opcodes.FLOAT;
                break;
            case 'J':
                frame[frameIndex++] = 4; // Opcodes.LONG;
                break;
            case 'D':
                frame[frameIndex++] = 3; // Opcodes.DOUBLE;
                break;
            case '[':
                while (descriptor.charAt(i) == '[') {
                    ++i;
                }
                if (descriptor.charAt(i) == 'L') {
                    ++i;
                    while (descriptor.charAt(i) != ';') {
                        ++i;
                    }
                }
                frame[frameIndex++] = Frame.OBJECT
                        | cw.addType(descriptor.substring(j, ++i));
                break;
            case 'L':
                while (descriptor.charAt(i) != ';') {
                    ++i;
                }
                frame[frameIndex++] = Frame.OBJECT
                        | cw.addType(descriptor.substring(j + 1, i++));
                break;
            default:
                break loop;
            }
        }
        frame[1] = frameIndex - 3;
        endFrame();
    }
Visit the implicit first frame of this method.