edu.umd.cs.findbugs.ba

Class SignatureParser

java.lang.Object

edu.umd.cs.findbugs.ba.SignatureParser

public class SignatureParser
extends Object

A simple class to parse method signatures.

Author:

David Hovemeyer

Constructor Summary

Constructors

Constructor and Description
SignatureParser(String signature) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
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(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.
String	getParameter(int pos)
String	getReturnTypeSignature() Get the method return type signature.
int	getSlotsFromTopOfStackForParameter(int paramNum)
int	getTotalArgumentSize()
boolean	hasReferenceParameters()
static boolean	isReferenceType(String signature) Determine whether or not given signature denotes a reference type.
static void	main(String[] args)
Iterator<String>	parameterSignatureIterator() Get an Iterator over signatures of the method parameters.
Iterable<String>	parameterSignatures()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SignatureParser

public SignatureParser(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 String toString()

Overrides:

toString in class Object

getArguments

public String[] getArguments()

parameterSignatureIterator

public Iterator<String> parameterSignatureIterator()

Get an Iterator over signatures of the method parameters.

Returns:

Iterator which returns the parameter type signatures in order

parameterSignatures

public Iterable<String> parameterSignatures()

getReturnTypeSignature

public 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 String getParameter(int pos)

isReferenceType

public static boolean isReferenceType(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(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(String[] args)