org.antlr.v4.runtime.tree

类 ParseTreeWalker

java.lang.Object

org.antlr.v4.runtime.tree.ParseTreeWalker

public class ParseTreeWalker
extends Object

字段概要

字段

限定符和类型	字段和说明
static ParseTreeWalker	DEFAULT

构造器概要

构造器

构造器和说明
ParseTreeWalker()

方法概要

限定符和类型	方法和说明
protected void	enterRule(ParseTreeListener listener, RuleNode r) Enters a grammar rule by first triggering the generic event ParseTreeListener.enterEveryRule(org.antlr.v4.runtime.ParserRuleContext) then by triggering the event specific to the given parse tree node
protected void	exitRule(ParseTreeListener listener, RuleNode r) Exits a grammar rule by first triggering the event specific to the given parse tree node then by triggering the generic event ParseTreeListener.exitEveryRule(org.antlr.v4.runtime.ParserRuleContext)
void	walk(ParseTreeListener listener, ParseTree t) Performs a walk on the given parse tree starting at the root and going down recursively with depth-first search.

从类继承的方法 java.lang.Object

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

字段详细资料

DEFAULT

public static final ParseTreeWalker DEFAULT

构造器详细资料

ParseTreeWalker

public ParseTreeWalker()

方法详细资料

walk

public void walk(ParseTreeListener listener,
                 ParseTree t)

Performs a walk on the given parse tree starting at the root and going down recursively with depth-first search. On each node, enterRule(org.antlr.v4.runtime.tree.ParseTreeListener, org.antlr.v4.runtime.tree.RuleNode) is called before recursively walking down into child nodes, then exitRule(org.antlr.v4.runtime.tree.ParseTreeListener, org.antlr.v4.runtime.tree.RuleNode) is called after the recursive call to wind up.

参数:

listener - The listener used by the walker to process grammar rules

t - The parse tree to be walked on

enterRule

protected void enterRule(ParseTreeListener listener,
                         RuleNode r)

Enters a grammar rule by first triggering the generic event ParseTreeListener.enterEveryRule(org.antlr.v4.runtime.ParserRuleContext) then by triggering the event specific to the given parse tree node

参数:

listener - The listener responding to the trigger events

r - The grammar rule containing the rule context

exitRule

protected void exitRule(ParseTreeListener listener,
                        RuleNode r)

Exits a grammar rule by first triggering the event specific to the given parse tree node then by triggering the generic event ParseTreeListener.exitEveryRule(org.antlr.v4.runtime.ParserRuleContext)

参数:

listener - The listener responding to the trigger events

r - The grammar rule containing the rule context