Package randoop.reflection

Class SignatureParser

java.lang.Object

randoop.reflection.SignatureParser

public class SignatureParser
extends Object

Parses type signature strings used to identify methods and constructors in input.

Field Summary

Fields

Modifier and Type	Field	Description
static String	DOT_DELIMITED_IDS	Regex to match a sequence of identifiers (or <init>) separated by periods.
static String	ID_STRING	Regex for Java identifiers.
private static Pattern	SIGNATURE_PATTERN	Naive regex to match a method signature consisting of a fully-qualified method name followed by anything in parentheses.

Constructor Summary

Constructors

Constructor	Description
SignatureParser()

Method Summary

Modifier and Type	Method	Description
static AccessibleObject	parse(String signature, AccessibilityPredicate accessibility, ReflectionPredicate reflectionPredicate)	Parses a fully-qualified signature and returns the corresponding java.lang.reflect.AccessibleObject.

Methods inherited from class java.lang.Object

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

Field Detail

ID_STRING

public static final String ID_STRING

Regex for Java identifiers.

See Also:

Constant Field Values

DOT_DELIMITED_IDS

public static final String DOT_DELIMITED_IDS

Regex to match a sequence of identifiers (or <init>) separated by periods. Corresponds to package names, fully-qualified classnames, or method names with fully-qualified classname.

See Also:

Constant Field Values

SIGNATURE_PATTERN

private static final Pattern SIGNATURE_PATTERN

Naive regex to match a method signature consisting of a fully-qualified method name followed by anything in parentheses. The parentheses are expected to contain argument types, but the pattern permits anything.

Capturing group 1 matches the fully-qualified method name, and capturing group 2 matches the contents of the parentheses.

Constructor Detail

SignatureParser

public SignatureParser()

Method Detail

parse

public static AccessibleObject parse(String signature,
                                     AccessibilityPredicate accessibility,
                                     ReflectionPredicate reflectionPredicate)
                              throws SignatureParseException,
                                     FailedPredicateException

Parses a fully-qualified signature and returns the corresponding java.lang.reflect.AccessibleObject.

A signature is expected to have the form

• package-name.classname.method-name(argument-list) for a method,
• package-name.classname.<init>(argument-list) or package-name.classname(argument-list) for a constructor.

where package-name is a period-separated list of identifiers, and argument-list is a comma-separated (spaces-allowed) list of fully-qualified Java raw types. Array types have the format element-type[].

Parameters:

signature - the string to parse: a signature string for a method or constructor, in the above format

accessibility - the predicate for determining whether the method or constructor is accessible

reflectionPredicate - the predicate for checking reflection policy

Returns:

the AccessibleObject for the method or constructor represented by the string

Throws:

IllegalArgumentException - if the string does not have the format of a signature

SignatureParseException - if the signature is not fully-qualified, or the class, an argument type, or the method or constructor is not found using reflection

FailedPredicateException - if the accessibility or reflection predicate returns false on the class or the method or constructor