src/org/nutz/repo/org/objectweb/asm/commons/GeneratorAdapter.java
public void swap(final Type prev, final Type type) {
        if (type.getSize() == 1) {
            if (prev.getSize() == 1) {
                swap(); // same as dupX1(), pop();
            } else {
                dupX2();
                pop();
            }
        } else {
            if (prev.getSize() == 1) {
                dup2X1();
                pop2();
            } else {
                dup2X2();
                pop2();
            }
        }
    }
public void swap(final Type prev, final Type type) {
        if (type.getSize() == 1) {
            if (prev.getSize() == 1) {
                swap(); // same as dupX1(), pop();
            } else {
                dupX2();
                pop();
            }
        } else {
            if (prev.getSize() == 1) {
                dup2X1();
                pop2();
            } else {
                dup2X2();
                pop2();
            }
        }
    }
public void swap ( final Type prev , final Type type ) { if ( type . getSize ( ) == 1 ) { if ( prev . getSize ( ) == 1 ) { swap ( ) ; // same as dupX1(), pop(); } else { dupX2 ( ) ; pop ( ) ; } } else { if ( prev . getSize ( ) == 1 ) { dup2X1 ( ) ; pop2 ( ) ; } else { dup2X2 ( ) ; pop2 ( ) ; } } }
Generates the instructions to swap the top two stack values.

@param prev
type of the top - 1 stack value.
@param type
type of the top stack value.
Generates the instructions to swap the top two stack values .