com.massa.dsl

Class DslUtils

java.lang.Object

com.massa.dsl.DslUtils

public final class DslUtils
extends Object

Utility methods for DSL library

Method Summary

Modifier and Type	Method and Description
static LexerParser	identify(LexerParser parentParser, Collection<Lexer> candidates, boolean safeMode) Identifies the lexer to use between provided candidates to handle the following source part.
static boolean	isTypeExcluded(Set<Class<?>> excludedTypes, Class<?> resolvedType) Tells if type or its hierarchy is excluded.
static void	matchEnd(LexerParser parser) Calls matchEnd(LexerParser) without safe mode.
static boolean	matchEnd(LexerParser parser, boolean safeMode) Identifies the lexer to use between provided candidates to handle the following source part.
static int	skipSpaces(AdvancedReader source, boolean clearThem) Skips all space chars (\s, \t, \n, \r, \f) util a non-space is found.
static String	skipUnusefulSpaces(String s) Trims input string and replaces multiple space chars (\s, \t, \n, \r, \f) with only one.

Methods inherited from class java.lang.Object

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

Method Detail

skipUnusefulSpaces

public static final String skipUnusefulSpaces(String s)

Trims input string and replaces multiple space chars (\s, \t, \n, \r, \f) with only one.

skipSpaces

public static int skipSpaces(AdvancedReader source,
                             boolean clearThem)
                      throws IOException

Skips all space chars (\s, \t, \n, \r, \f) util a non-space is found.

Parameters:

clearThem - if true read spaces will not be "unreadable"

Returns:

number of read space chars

Throws:

IOException

isTypeExcluded

public static boolean isTypeExcluded(Set<Class<?>> excludedTypes,
                                     Class<?> resolvedType)

Tells if type or its hierarchy is excluded.

identify

public static LexerParser identify(LexerParser parentParser,
                                   Collection<Lexer> candidates,
                                   boolean safeMode)
                            throws IOException,
                                   DslException

Identifies the lexer to use between provided candidates to handle the following source part.
The chosen one will be the lexer with the longuest start matching the source.
This utility method intends to be used by Block Resolvers and should not be used directly by non-block objects. Use LexerBlockResolver.identify(LexerParser, boolean) instead.

Parameters:

parentParser - Parent parser

candidates - All candidate lexers

safeMode - If false, an exception will be thrown if no lexer is identified

Returns:

Identified Lexer

Throws:

IOException

DslException

matchEnd

public static void matchEnd(LexerParser parser)
                     throws IOException,
                            DslException

Calls matchEnd(LexerParser) without safe mode.

Throws:

IOException

DslException

matchEnd

public static boolean matchEnd(LexerParser parser,
                               boolean safeMode)
                        throws IOException,
                               DslException

Identifies the lexer to use between provided candidates to handle the following source part.
The chosen one will be the lexer with the longuest start matching the source.

Parameters:

parser - Parent parser

safeMode - If false, an exception will be thrown if end does not match

Returns:

true if matched

Throws:

IOException

DslException