Package org.codehaus.groovy.classgen.asm

Class OperandStack

java.lang.Object

org.codehaus.groovy.classgen.asm.OperandStack

public class OperandStack
extends Object

Constructor Summary

Constructors

Constructor	Description
OperandStack(WriterController wc)

Method Summary

Modifier and Type	Method	Description
ClassNode	box()
void	castToBool(int mark, boolean emptyDefault)	ensure last marked parameter on the stack is a primitive boolean if mark==stack size, we assume an empty expression or statement.
void	doAsType(ClassNode targetType)
void	doGroovyCast(ClassNode targetType)	do Groovy cast for top level element
void	doGroovyCast(Variable v)
void	dup()	duplicate top element
int	getStackLength()
ClassNode	getTopOperand()
org.objectweb.asm.Label	jump(int ifIns)
void	jump(int ifIns, org.objectweb.asm.Label label)
void	load(ClassNode type, int idx)
void	loadOrStoreVariable(BytecodeVariable variable, boolean useReferenceDirectly)
void	pop()	remove operand stack top element using bytecode pop
void	popDownTo(int elements)
void	push(ClassNode type)	push operand on stack
void	pushBool(boolean inclusive)
void	pushConstant(ConstantExpression expression)	load the constant on the operand stack.
void	pushDynamicName(Expression name)
void	remove(int amount)	Remove amount elements from the operand stack, without using pop.
void	replace(ClassNode type)	replace top level element with new element of given type
void	replace(ClassNode type, int n)	replace n top level elements with new element of given type
void	storeVar(BytecodeVariable variable)
void	swap()	swap two top level operands
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

OperandStack

public OperandStack(WriterController wc)

Method Detail

getStackLength

public int getStackLength()

popDownTo

public void popDownTo(int elements)

castToBool

public void castToBool(int mark,
                       boolean emptyDefault)

ensure last marked parameter on the stack is a primitive boolean if mark==stack size, we assume an empty expression or statement. was used and we will use the value given in emptyDefault as boolean if mark==stack.size()-1 the top element will be cast to boolean using Groovy truth. In other cases we throw a GroovyBugError

pop

public void pop()

remove operand stack top element using bytecode pop

jump

public org.objectweb.asm.Label jump(int ifIns)

jump

public void jump(int ifIns,
                 org.objectweb.asm.Label label)

dup

public void dup()

duplicate top element

box

public ClassNode box()

remove

public void remove(int amount)

Remove amount elements from the operand stack, without using pop. For example after a method invocation

push

public void push(ClassNode type)

push operand on stack

swap

public void swap()

swap two top level operands

replace

public void replace(ClassNode type)

replace top level element with new element of given type

replace

public void replace(ClassNode type,
                    int n)

replace n top level elements with new element of given type

doGroovyCast

public void doGroovyCast(ClassNode targetType)

do Groovy cast for top level element

doGroovyCast

public void doGroovyCast(Variable v)

doAsType

public void doAsType(ClassNode targetType)

pushConstant

public void pushConstant(ConstantExpression expression)

load the constant on the operand stack.

pushDynamicName

public void pushDynamicName(Expression name)

loadOrStoreVariable

public void loadOrStoreVariable(BytecodeVariable variable,
                                boolean useReferenceDirectly)

storeVar

public void storeVar(BytecodeVariable variable)

load

public void load(ClassNode type,
                 int idx)

pushBool

public void pushBool(boolean inclusive)

toString

public String toString()

Overrides:

toString in class Object

getTopOperand

public ClassNode getTopOperand()