edu.umd.cs.findbugs.ba

Class SignatureParser

java.lang.Object

edu.umd.cs.findbugs.ba.SignatureParser

public class SignatureParser
extends java.lang.Object

A simple class to parse method signatures.

Author:

David Hovemeyer

Constructor Summary

Constructors

Constructor and Description
SignatureParser(java.lang.String signature) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String[]	getArguments()
int	getNumParameters() Get the number of parameters in the signature.
static int	getNumParametersForInvocation(org.apache.bcel.generic.InvokeInstruction inv, org.apache.bcel.generic.ConstantPoolGen cpg) Get the number of parameters passed to method invocation.
static int	getNumSlotsForType(java.lang.String sig) Return how many stack frame slots a type whose signature is given will occupy.
java.lang.String	getParameter(int pos)
java.lang.String	getReturnTypeSignature() Get the method return type signature.
int	getSlotsFromTopOfStackForParameter(int paramNum)
int	getTotalArgumentSize()
boolean	hasReferenceParameters()
static boolean	isReferenceType(java.lang.String signature) Determine whether or not given signature denotes a reference type.
static void	main(java.lang.String[] args)
java.util.Iterator<java.lang.String>	parameterSignatureIterator() Get an Iterator over signatures of the method parameters.
java.lang.Iterable<java.lang.String>	parameterSignatures()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SignatureParser

public SignatureParser(java.lang.String signature)

Constructor.

Parameters:

signature - the method signature to be parsed

Method Detail

getTotalArgumentSize

public int getTotalArgumentSize()

getSlotsFromTopOfStackForParameter

public int getSlotsFromTopOfStackForParameter(int paramNum)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getArguments

public java.lang.String[] getArguments()

parameterSignatureIterator

public java.util.Iterator<java.lang.String> parameterSignatureIterator()

Get an Iterator over signatures of the method parameters.

Returns:

Iterator which returns the parameter type signatures in order

parameterSignatures

public java.lang.Iterable<java.lang.String> parameterSignatures()

getReturnTypeSignature

public java.lang.String getReturnTypeSignature()

Get the method return type signature.

Returns:

the method return type signature

getNumParameters

public int getNumParameters()

Get the number of parameters in the signature.

Returns:

the number of parameters

hasReferenceParameters

public boolean hasReferenceParameters()

getParameter

public java.lang.String getParameter(int pos)

isReferenceType

public static boolean isReferenceType(java.lang.String signature)

Determine whether or not given signature denotes a reference type.

Parameters:

signature - a signature

Returns:

true if signature denotes a reference type, false otherwise

getNumParametersForInvocation

public static int getNumParametersForInvocation(org.apache.bcel.generic.InvokeInstruction inv,
                                org.apache.bcel.generic.ConstantPoolGen cpg)

Get the number of parameters passed to method invocation.

Parameters:

inv -

cpg -

Returns:

int number of parameters

getNumSlotsForType

public static int getNumSlotsForType(java.lang.String sig)

Return how many stack frame slots a type whose signature is given will occupy. long and double values take 2 slots, while all other kinds of values take 1 slot.

Parameters:

sig - a type signature

Returns:

number of stack frame slots a value of the given type will occupy

main

public static void main(java.lang.String[] args)