com.ibm.wala.util.strings

Class StringStuff

java.lang.Object

com.ibm.wala.util.strings.StringStuff

public class StringStuff
extends Object

Some simple utilities used to manipulate Strings

Constructor Summary

Constructors

Constructor and Description
StringStuff()

Method Summary

Modifier and Type	Method and Description
static boolean	classIsPrimitive(ImmutableByteArray name, int start, int length)
static String	deployment2CanonicalDescriptorTypeString(String dString) Translate a type from a deployment descriptor string into the type expected for use in a method descriptor eg.
static String	deployment2CanonicalTypeString(String dString) Translate a type from a deployment descriptor string into the internal JVM format eg.
static String	dollarToDot(String path) Convert '$' to '.' in names.
static String	dotToDollar(String path) Convert '.' to '$' in names.
static boolean	isTypeCodeChar(ImmutableByteArray name, int i)
static String	jvmToBinaryName(String jvmType) Convert a JVM encoded type name to a binary type name.
static String	jvmToReadableType(String jvmType) Convert a JVM encoded type name to a readable type name.
static MethodReference	makeMethodReference(Language l, String methodSig)
static MethodReference	makeMethodReference(String methodSig)
static void	padWithSpaces(StringBuilder b, int length)
static int	parseForArrayDimensionality(ImmutableByteArray b, int start, int length) Parse an array descriptor to obtain number of dimensions in corresponding array type.
static ImmutableByteArray	parseForClass(ImmutableByteArray name) Given that name[start:start+length] is a Type name in JVM format, strip the package and return the "package-free" class name
static ImmutableByteArray	parseForClass(ImmutableByteArray name, int start, int length) Given that name[start:start+length] is a Type name in JVM format, strip the package and return the "package-free" class name TODO: inefficient; needs tuning.
static ImmutableByteArray	parseForInnermostArrayElementDescriptor(Atom a) Parse an array descriptor to obtain number of dimensions in corresponding array type.
static ImmutableByteArray	parseForInnermostArrayElementDescriptor(ImmutableByteArray b, int start, int length) Parse an array descriptor to obtain number of dimensions in corresponding array type.
static ImmutableByteArray	parseForPackage(ImmutableByteArray name) Given that name[start:start+length] is a Type name in JVM format, parse it for the package
static ImmutableByteArray	parseForPackage(ImmutableByteArray name, int start, int length) Given that name[start:start+length] is a Type name in JVM format, parse it for the package
static TypeName[]	parseForParameterNames(Language l, ImmutableByteArray b) Parse method descriptor to obtain descriptions of method's parameters.
static TypeName[]	parseForParameterNames(Language l, String descriptor)
static TypeName[]	parseForParameterNames(String descriptor)
static TypeName	parseForReturnTypeName(Language l, ImmutableByteArray b) Parse method descriptor to obtain description of method's return type.
static TypeName	parseForReturnTypeName(Language l, String desc)
static TypeName	parseForReturnTypeName(String desc)
static String	slashToDot(String path) Convert '/' to '.' in names.
static String	toBasename(String typeName) Return the right position of the string up to '.' or '/' stripping ';'

Methods inherited from class java.lang.Object

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

Constructor Detail

StringStuff

public StringStuff()

Method Detail

padWithSpaces

public static void padWithSpaces(StringBuilder b,
                                 int length)

deployment2CanonicalTypeString

public static String deployment2CanonicalTypeString(String dString)

Translate a type from a deployment descriptor string into the internal JVM format eg. [[java/lang/String

Throws:

IllegalArgumentException - if dString is null

deployment2CanonicalDescriptorTypeString

public static String deployment2CanonicalDescriptorTypeString(String dString)

Translate a type from a deployment descriptor string into the type expected for use in a method descriptor eg. [[Ljava.lang.String;

Throws:

IllegalArgumentException - if dString is null

parseForReturnTypeName

public static final TypeName parseForReturnTypeName(String desc)
                                             throws IllegalArgumentException

Throws:

IllegalArgumentException

parseForReturnTypeName

public static final TypeName parseForReturnTypeName(Language l,
                                                    String desc)
                                             throws IllegalArgumentException

Throws:

IllegalArgumentException

parseForReturnTypeName

public static final TypeName parseForReturnTypeName(Language l,
                                                    ImmutableByteArray b)
                                             throws IllegalArgumentException

Parse method descriptor to obtain description of method's return type. TODO: tune this .. probably combine with parseForParameters.

Parameters:

b - method descriptor - something like "(III)V"

Returns:

type description

Throws:

IllegalArgumentException - if b is null

parseForParameterNames

public static final TypeName[] parseForParameterNames(String descriptor)
                                               throws IllegalArgumentException

Throws:

IllegalArgumentException

parseForParameterNames

public static final TypeName[] parseForParameterNames(Language l,
                                                      String descriptor)
                                               throws IllegalArgumentException

Throws:

IllegalArgumentException

parseForParameterNames

public static final TypeName[] parseForParameterNames(Language l,
                                                      ImmutableByteArray b)
                                               throws IllegalArgumentException

Parse method descriptor to obtain descriptions of method's parameters.

Returns:

parameter descriptions, or null if there are no parameters

Throws:

IllegalArgumentException - if b is null

isTypeCodeChar

public static boolean isTypeCodeChar(ImmutableByteArray name,
                                     int i)

parseForPackage

public static ImmutableByteArray parseForPackage(ImmutableByteArray name,
                                                 int start,
                                                 int length)
                                          throws IllegalArgumentException

Given that name[start:start+length] is a Type name in JVM format, parse it for the package

Returns:

an ImmutableByteArray that represents the package, or null if it's the unnamed package

Throws:

IllegalArgumentException - if name == null

parseForPackage

public static ImmutableByteArray parseForPackage(ImmutableByteArray name)

Given that name[start:start+length] is a Type name in JVM format, parse it for the package

Returns:

an ImmutableByteArray that represents the package, or null if it's the unnamed package

Throws:

IllegalArgumentException - if name is null

parseForClass

public static ImmutableByteArray parseForClass(ImmutableByteArray name,
                                               int start,
                                               int length)
                                        throws IllegalArgumentException

Given that name[start:start+length] is a Type name in JVM format, strip the package and return the "package-free" class name TODO: inefficient; needs tuning.

Returns:

an ImmutableByteArray that represents the package, or null if it's the unnamed package

Throws:

IllegalArgumentException - if name is null or malformed

parseForClass

public static ImmutableByteArray parseForClass(ImmutableByteArray name)
                                        throws IllegalArgumentException

Given that name[start:start+length] is a Type name in JVM format, strip the package and return the "package-free" class name

Returns:

an ImmutableByteArray that represents the package, or null if it's the unnamed package

Throws:

IllegalArgumentException - if name is null

parseForArrayDimensionality

public static int parseForArrayDimensionality(ImmutableByteArray b,
                                              int start,
                                              int length)
                                       throws IllegalArgumentException,
                                              IllegalArgumentException

Parse an array descriptor to obtain number of dimensions in corresponding array type. b: descriptor - something like "[Ljava/lang/String;" or "[[I"

Returns:

dimensionality - something like "1" or "2"

Throws:

IllegalArgumentException - if b == null

parseForInnermostArrayElementDescriptor

public static ImmutableByteArray parseForInnermostArrayElementDescriptor(ImmutableByteArray b,
                                                                         int start,
                                                                         int length)

Parse an array descriptor to obtain number of dimensions in corresponding array type. b: descriptor - something like "[Ljava/lang/String;" or "[[I"

Returns:

dimensionality - something like "Ljava/lang/String;" or "I"

Throws:

IllegalArgumentException - if b is null

parseForInnermostArrayElementDescriptor

public static ImmutableByteArray parseForInnermostArrayElementDescriptor(Atom a)

Parse an array descriptor to obtain number of dimensions in corresponding array type. b: descriptor - something like "[Ljava/lang/String;" or "[[I"

Returns:

dimensionality - something like "Ljava/lang/String;" or "I"

Throws:

IllegalArgumentException - if a is null

classIsPrimitive

public static boolean classIsPrimitive(ImmutableByteArray name,
                                       int start,
                                       int length)
                                throws IllegalArgumentException

Returns:

true iff the class returned by parseForClass is primitive

Throws:

IllegalArgumentException - if name is null

makeMethodReference

public static MethodReference makeMethodReference(String methodSig)
                                           throws IllegalArgumentException

Parameters:

methodSig - something like "java_cup.lexer.advance()V"

Throws:

IllegalArgumentException - if methodSig is null

makeMethodReference

public static MethodReference makeMethodReference(Language l,
                                                  String methodSig)
                                           throws IllegalArgumentException

Throws:

IllegalArgumentException

jvmToReadableType

public static String jvmToReadableType(String jvmType)
                                throws IllegalArgumentException

Convert a JVM encoded type name to a readable type name.

Parameters:

jvmType - a String containing a type name in JVM internal format.

Returns:

the same type name in readable (source code) format.

Throws:

IllegalArgumentException - if jvmType is null

jvmToBinaryName

public static String jvmToBinaryName(String jvmType)
                              throws IllegalArgumentException

Convert a JVM encoded type name to a binary type name. This version does not call dollarToDot.

Parameters:

jvmType - a String containing a type name in JVM internal format.

Returns:

the same type name in readable (source code) format.

Throws:

IllegalArgumentException - if jvmType is null

slashToDot

public static String slashToDot(String path)

Convert '/' to '.' in names.

Returns:

a String object obtained by replacing the forward slashes ('/') in the String passed as argument with ('.').

Throws:

IllegalArgumentException - if path is null

dollarToDot

public static String dollarToDot(String path)

Convert '$' to '.' in names.

Parameters:

path - a string object in which dollar signs('$') must be converted to dots ('.').

Returns:

a String object obtained by replacing the dollar signs ('S') in the String passed as argument with ('.').

Throws:

IllegalArgumentException - if path is null

dotToDollar

public static String dotToDollar(String path)

Convert '.' to '$' in names.

Parameters:

path - String object in which dollar signs('$') must be converted to dots ('.').

Returns:

a String object obtained by replacing the dollar signs ('S') in the String passed as argument with ('.').

Throws:

IllegalArgumentException - if path is null

toBasename

public static String toBasename(String typeName)

Return the right position of the string up to '.' or '/' stripping ';'