javassist.bytecode

Class StackMapTable.Writer

public static class StackMapTable.Writer extends Object

A writer of stack map tables.

Constructor Summary
	Writer(int size) Constructs a writer.

Method Summary
void	appendFrame(int offsetDelta, int[] tags, int[] data) Writes a `append_frame`.
void	chopFrame(int offsetDelta, int k) Writes a `chop_frame`.
void	fullFrame(int offsetDelta, int[] localTags, int[] localData, int[] stackTags, int[] stackData) Writes a `full_frame`.
void	sameFrame(int offsetDelta) Writes a `same_frame` or a `same_frame_extended`.
void	sameLocals(int offsetDelta, int tag, int data) Writes a `same_locals_1_stack_item` or a `same_locals_1_stack_item_extended`.
byte[]	toByteArray() Returns the stack map table written out.

Constructor Detail

Writer

public Writer(int size)

Constructs a writer.

Parameters: size the initial buffer size.

Method Detail

appendFrame

public void appendFrame(int offsetDelta, int[] tags, int[] data)

Writes a append_frame.

Parameters: tag locals[].tag. The length of this array must be either 1, 2, or 3. data locals[].cpool_index if the tag is OBJECT, or locals[].offset if the tag is UNINIT. Otherwise, this parameter is not used.

chopFrame

public void chopFrame(int offsetDelta, int k)

Writes a chop_frame.

Parameters: k the number of absent locals. 1, 2, or 3.

fullFrame

public void fullFrame(int offsetDelta, int[] localTags, int[] localData, int[] stackTags, int[] stackData)

Writes a full_frame.

Parameters: localTags locals[].tag. localData locals[].cpool_index if the tag is OBJECT, or locals[].offset if the tag is UNINIT. Otherwise, this parameter is not used. stackTags stack[].tag. stackData stack[].cpool_index if the tag is OBJECT, or stack[].offset if the tag is UNINIT. Otherwise, this parameter is not used.

sameFrame

public void sameFrame(int offsetDelta)

Writes a same_frame or a same_frame_extended.

sameLocals

public void sameLocals(int offsetDelta, int tag, int data)

Writes a same_locals_1_stack_item or a same_locals_1_stack_item_extended.

Parameters: tag stack[0].tag. data stack[0].cpool_index if the tag is OBJECT, or stack[0].offset if the tag is UNINIT. Otherwise, this parameter is not used.

toByteArray

public byte[] toByteArray()

Returns the stack map table written out.