Package org.apache.tinkerpop.gremlin.language.grammar

Class TraversalEnumParser

java.lang.Object

org.apache.tinkerpop.gremlin.language.grammar.TraversalEnumParser

public class TraversalEnumParser
extends Object

Traversal enum parser parses all the enums like (e.g. Scope in graph traversal.

Constructor Summary

Constructors

Constructor	Description
TraversalEnumParser()

Method Summary

Modifier and Type	Method	Description
static Direction	parseTraversalDirectionFromContext(GremlinParser.TraversalDirectionContext context)	Parsing of Direction requires some special handling because of aliases (from/to).
static Direction	parseTraversalDirectionFromContext(GremlinParser.TraversalDirectionLongContext context)	Parsing of Direction requires some special handling because of aliases (from/to).
static <E extends Enum<E>, C extends org.antlr.v4.runtime.tree.ParseTree> E	parseTraversalEnumFromContext(Class<E> enumType, C context)	Parse enum text from a parse tree context into a enum object
static Function	parseTraversalFunctionFromContext(GremlinParser.TraversalFunctionContext context)
static GType	parseTraversalGTypeFromContext(GremlinParser.TraversalGTypeContext context)	Parsing of GType requires some special handling as grammar allows lowercase for tokens.

Methods inherited from class java.lang.Object

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

Constructor Details

TraversalEnumParser

public TraversalEnumParser()

Method Details

parseTraversalEnumFromContext

public static <E extends Enum<E>,
C extends org.antlr.v4.runtime.tree.ParseTree>
E parseTraversalEnumFromContext(Class<E> enumType,
 C context)

Parse enum text from a parse tree context into a enum object

Parameters:

enumType - : class of enum

context - : parse tree context

Returns:

enum object

parseTraversalDirectionFromContext

public static Direction parseTraversalDirectionFromContext(GremlinParser.TraversalDirectionContext context)

Parsing of Direction requires some special handling because of aliases (from/to).

parseTraversalDirectionFromContext

public static Direction parseTraversalDirectionFromContext(GremlinParser.TraversalDirectionLongContext context)

Parsing of Direction requires some special handling because of aliases (from/to).

parseTraversalFunctionFromContext

public static Function parseTraversalFunctionFromContext(GremlinParser.TraversalFunctionContext context)

parseTraversalGTypeFromContext

public static GType parseTraversalGTypeFromContext(GremlinParser.TraversalGTypeContext context)

Parsing of GType requires some special handling as grammar allows lowercase for tokens.