com.oracle.truffle.regex.literal

Class LiteralRegexEngine

java.lang.Object

com.oracle.truffle.regex.literal.LiteralRegexEngine

public final class LiteralRegexEngine
extends Object

This regex engine is designed for very simple cases, where the regular expression can be directly translated to common string operations. It will map expressions to simple index checks ( LiteralRegexExecRootNode.EmptyStartsWith, LiteralRegexExecRootNode.EmptyEndsWith, LiteralRegexExecRootNode.EmptyIndexOf) or to the following methods of String (or equivalent nodes in com.oracle.truffle.regex.tregex.nodes.input) whenever possible:

• String.isEmpty(): LiteralRegexExecRootNode.EmptyEquals
• String.indexOf(String): LiteralRegexExecRootNode.IndexOfString
• String.startsWith(String): LiteralRegexExecRootNode.StartsWith
• String.endsWith(String): LiteralRegexExecRootNode.EndsWith
• String.equals(Object): LiteralRegexExecRootNode.Equals
• String.regionMatches(int, String, int, int): LiteralRegexExecRootNode.RegionMatches

Constructor Summary

Constructors

Constructor and Description
LiteralRegexEngine()

Method Summary

Modifier and Type	Method and Description
static LiteralRegexExecRootNode	createNode(RegexLanguage language, RegexAST ast)

Methods inherited from class java.lang.Object

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

Constructor Detail

LiteralRegexEngine

public LiteralRegexEngine()

Method Detail

createNode

public static LiteralRegexExecRootNode createNode(RegexLanguage language,
                                                  RegexAST ast)