com.puppycrawl.tools.checkstyle.checks

Class CheckUtils

java.lang.Object

com.puppycrawl.tools.checkstyle.checks.CheckUtils

public final class CheckUtils
extends Object

Contains utility methods for the checks.

Author:

Oliver Burn, Simon Harris, o_sukhodolsky

Method Summary

Methods

Modifier and Type	Method and Description
static FullIdent	createFullType(DetailAST typeAST) Creates FullIdent for given type node.
static DetailAST	getFirstNode(DetailAST node) Finds sub-node for given node minimal (line, column) pair.
static List<String>	getTypeParameterNames(DetailAST node) Retrieves the names of the type parameters to the node.
static List<DetailAST>	getTypeParameters(DetailAST node) Retrieves the type parameters to the node.
static boolean	isElseIf(DetailAST ast) Returns whether a token represents an ELSE as part of an ELSE / IF set.
static boolean	isEqualsMethod(DetailAST ast) Tests whether a method definition AST defines an equals covariant.
static double	parseDouble(String text, int type) Returns the value represented by the specified string of the specified type.
static double	parseFloat(String text, int type) Returns the value represented by the specified string of the specified type.
static int	parseInt(String text, int radix) Parses the string argument as a signed integer in the radix specified by the second argument.
static long	parseLong(String text, int radix) Parses the string argument as a signed long in the radix specified by the second argument.

Methods inherited from class java.lang.Object

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

Method Detail

isEqualsMethod

public static boolean isEqualsMethod(DetailAST ast)

Tests whether a method definition AST defines an equals covariant.

Parameters:

ast - the method definition AST to test. Precondition: ast is a TokenTypes.METHOD_DEF node.

Returns:

true if ast defines an equals covariant.

isElseIf

public static boolean isElseIf(DetailAST ast)

Returns whether a token represents an ELSE as part of an ELSE / IF set.

Parameters:

ast - the token to check

Returns:

whether it is

createFullType

public static FullIdent createFullType(DetailAST typeAST)

Creates FullIdent for given type node.

Parameters:

typeAST - a type node.

Returns:

FullIdent for given type.

parseDouble

public static double parseDouble(String text,
                 int type)

Returns the value represented by the specified string of the specified type. Returns 0 for types other than float, double, int, and long.

Parameters:

text - the string to be parsed.

type - the token type of the text. Should be a constant of TokenTypes.

Returns:

the double value represented by the string argument.

parseInt

public static int parseInt(String text,
           int radix)

Parses the string argument as a signed integer in the radix specified by the second argument. The characters in the string must all be digits of the specified radix. Handles negative values, which method java.lang.Integer.parseInt(String, int) does not.

Parameters:

text - the String containing the integer representation to be parsed. Precondition: text contains a parsable int.

radix - the radix to be used while parsing text.

Returns:

the integer represented by the string argument in the specified radix.

parseLong

public static long parseLong(String text,
             int radix)

Parses the string argument as a signed long in the radix specified by the second argument. The characters in the string must all be digits of the specified radix. Handles negative values, which method java.lang.Integer.parseInt(String, int) does not.

Parameters:

text - the String containing the integer representation to be parsed. Precondition: text contains a parsable int.

radix - the radix to be used while parsing text.

Returns:

the long represented by the string argument in the specified radix.

parseFloat

public static double parseFloat(String text,
                int type)

Returns the value represented by the specified string of the specified type. Returns 0 for types other than float, double, int, and long.

Parameters:

text - the string to be parsed.

type - the token type of the text. Should be a constant of TokenTypes.

Returns:

the float value represented by the string argument.

getFirstNode

public static DetailAST getFirstNode(DetailAST node)

Finds sub-node for given node minimal (line, column) pair.

Parameters:

node - the root of tree for search.

Returns:

sub-node with minimal (line, column) pair.

getTypeParameterNames

public static List<String> getTypeParameterNames(DetailAST node)

Retrieves the names of the type parameters to the node.

Parameters:

node - the parameterised AST node

Returns:

a list of type parameter names

getTypeParameters

public static List<DetailAST> getTypeParameters(DetailAST node)

Retrieves the type parameters to the node.

Parameters:

node - the parameterised AST node

Returns:

a list of type parameter names