FrameGenerator (YABR)

tonic@yabr:~$ Source Portfolio tonicbox.dev

java.lang.Object
- com.tonic.analysis.frame.FrameGenerator

public class FrameGenerator
extends Object

Generates StackMapTable frames for a method.

Constructor Summary

Constructors
Constructor Description

FrameGenerator(ConstPool constPool)
Constructs a FrameGenerator for the given constant pool.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<StackMapFrame>`	`computeFrames(MethodEntry method)`	Computes the StackMapTable frames for a method.
`int`	`computeMaxStack(MethodEntry method)`	Computes the true `max_stack` over the method's control-flow graph.
`int`	`getMaxStack()`	The max operand-stack depth (slots) observed by the most recent `computeFrames(com.tonic.parser.MethodEntry)` / `computeMaxStack(com.tonic.parser.MethodEntry)` run.
`void`	`updateStackMapTable(MethodEntry method)`	Convenience method to compute and update the StackMapTable for a method.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FrameGenerator
```
public FrameGenerator(ConstPool constPool)
```
    Constructs a FrameGenerator for the given constant pool.
    
    Parameters:
    
    constPool - the constant pool
- Method Detail
  - computeFrames
```
public List<StackMapFrame> computeFrames(MethodEntry method)
```
    Computes the StackMapTable frames for a method.
    
    Parameters:
    
    method - The method to compute frames for
    
    Returns:
    
    List of StackMapFrame entries (all FullFrame type)
  - computeMaxStack
```
public int computeMaxStack(MethodEntry method)
```
    Computes the true max_stack over the method's control-flow graph.
    
    Parameters:
    
    method - the method to analyze
    
    Returns:
    
    the CFG-correct max_stack in slots (0 if the method has no code)
  - getMaxStack
```
public int getMaxStack()
```
    The max operand-stack depth (slots) observed by the most recent computeFrames(com.tonic.parser.MethodEntry) / computeMaxStack(com.tonic.parser.MethodEntry) run.
    
    Returns:
    
    the observed peak stack depth in slots
  - updateStackMapTable
```
public void updateStackMapTable(MethodEntry method)
```
    Convenience method to compute and update the StackMapTable for a method.
    
    Parameters:
    
    method - The method to update