org.antlr.v4.runtime.tree.xpath.XPath类的使用及代码示例

x33g5p2x  于2022-02-03 转载在 其他  
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本文整理了Java中org.antlr.v4.runtime.tree.xpath.XPath类的一些代码示例，展示了XPath类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。XPath类的具体详情如下：
包路径：org.antlr.v4.runtime.tree.xpath.XPath
类名称：XPath

XPath介绍

[英]Represent a subset of XPath XML path syntax for use in identifying nodes in parse trees.

Split path into words and separators / and // via ANTLR itself then walk path elements from left to right. At each separator-word pair, find set of nodes. Next stage uses those as work list.

The basic interface is XPath#findAll (tree, pathString, parser). But that is just shorthand for:

XPath p = new  
XPath#XPath(parser, pathString); 
return p. 
#evaluate(tree);

See org.antlr.v4.test.TestXPath for descriptions. In short, this allows operators:

/ root // anywhere ! invert; this must appear directly after root or anywhere operator

and path elements:

ID token name 'string' any string literal token from the grammar expr rule name * wildcard matching any node

Whitespace is not allowed.
[中]表示用于在解析树中标识节点的XPath XML路径语法的子集。
通过ANTLR本身将路径拆分为单词和分隔符/和//然后从左向右遍历路径元素。在每个分隔词对中，找到一组节点。下一阶段使用这些作为工作列表。
基本接口是XPath#findAll（树、路径字符串、解析器）。但这只是以下的简写：

XPath p = new  
XPath#XPath(parser, pathString); 
return p. 
#evaluate(tree);

见org。安特尔。v4。测验TestXPath用于描述。简而言之，这允许操作员：
/根//任何地方！倒转这必须直接出现在root或anywhere运算符之后
和路径元素：
ID标记名称“string”语法表达式规则名称*匹配任何节点的通配符中的任何字符串文字标记
空格是不允许的。

代码示例

代码示例来源：origin: org.antlr/antlr4-runtime

/**
 * Find all nodes using XPath and then try to match those subtrees against
 * this tree pattern.
 *
 * @param tree The {@link ParseTree} to match against this pattern.
 * @param xpath An expression matching the nodes
 *
 * @return A collection of {@link ParseTreeMatch} objects describing the
 * successful matches. Unsuccessful matches are omitted from the result,
 * regardless of the reason for the failure.
 */
public List<ParseTreeMatch> findAll(ParseTree tree, String xpath) {
  Collection<ParseTree> subtrees = XPath.findAll(tree, xpath, matcher.getParser());
  List<ParseTreeMatch> matches = new ArrayList<ParseTreeMatch>();
  for (ParseTree t : subtrees) {
    ParseTreeMatch match = match(t);
    if ( match.succeeded() ) {
      matches.add(match);
    }
  }
  return matches;
}

代码示例来源：origin: org.antlr/antlr4-runtime

public static Collection<ParseTree> findAll(ParseTree tree, String xpath, Parser parser) {
  XPath p = new XPath(parser, xpath);
  return p.evaluate(tree);
}

代码示例来源：origin: org.antlr/antlr4-runtime

next = tokens.get(i);
  XPathElement pathElement = getXPathElement(next, anywhere);
  pathElement.invert = invert;
  elements.add(pathElement);
case XPathLexer.RULE_REF :
case XPathLexer.WILDCARD :
  elements.add( getXPathElement(el, false) );
  i++;
  break;

代码示例来源：origin: org.antlr/antlr4-runtime

public XPath(Parser parser, String path) {
    this.parser = parser;
    this.path = path;
    elements = split(path);
//        System.out.println(Arrays.toString(elements));
  }

代码示例来源：origin: com.tunnelvisionlabs/antlr4-runtime

public XPath(Parser parser, String path) {
    this.parser = parser;
    this.path = path;
    elements = split(path);
//        System.out.println(Arrays.toString(elements));
  }

代码示例来源：origin: com.tunnelvisionlabs/antlr4-runtime

public static Collection<ParseTree> findAll(ParseTree tree, String xpath, Parser parser) {
  XPath p = new XPath(parser, xpath);
  return p.evaluate(tree);
}

代码示例来源：origin: antlr/intellij-plugin-v4

public static boolean ruleHasMultipleOutermostAlts(Parser parser, ParseTree ruleTree) {
  Collection<ParseTree> ors = XPath.findAll(ruleTree, "/parserRuleSpec/ruleBlock/ruleAltList/OR", parser);
  if ( ors.size()>=1 ) return true;
  ors = XPath.findAll(ruleTree, "/lexerRule/lexerRuleBlock/lexerAltList/OR", parser);
  return ors.size()>=1;
}

代码示例来源：origin: com.impetus.fabric/fabric-jdbc-driver-shaded

public XPath(Parser parser, String path) {
    this.parser = parser;
    this.path = path;
    elements = split(path);
//        System.out.println(Arrays.toString(elements));
  }

代码示例来源：origin: uk.co.nichesolutions/antlr4-runtime

next = tokens.get(i);
  XPathElement pathElement = getXPathElement(next, anywhere);
  pathElement.invert = invert;
  elements.add(pathElement);
case XPathLexer.RULE_REF :
case XPathLexer.WILDCARD :
  elements.add( getXPathElement(el, false) );
  i++;
  break;

代码示例来源：origin: com.impetus.fabric/fabric-jdbc-driver-shaded

public static Collection<ParseTree> findAll(ParseTree tree, String xpath, Parser parser) {
  XPath p = new XPath(parser, xpath);
  return p.evaluate(tree);
}

代码示例来源：origin: antlr/intellij-plugin-v4

public static TerminalNode getRuleDefNameNode(Parser parser, ParseTree tree, String ruleName) {
  Collection<ParseTree> ruleDefRuleNodes;
  if ( Grammar.isTokenName(ruleName) ) {
    ruleDefRuleNodes = XPath.findAll(tree, "//lexerRule/TOKEN_REF", parser);
  }
  else {
    ruleDefRuleNodes = XPath.findAll(tree, "//parserRuleSpec/RULE_REF", parser);
  }
  for (ParseTree node : ruleDefRuleNodes) {
    String r = node.getText(); // always a TerminalNode; just get rule name of this def
    if ( r.equals(ruleName) ) {
      return (TerminalNode)node;
    }
  }
  return null;
}

代码示例来源：origin: uk.co.nichesolutions/antlr4-runtime

public XPath(Parser parser, String path) {
    this.parser = parser;
    this.path = path;
    elements = split(path);
//        System.out.println(Arrays.toString(elements));
  }

代码示例来源：origin: com.impetus.fabric/fabric-jdbc-driver-shaded

next = tokens.get(i);
  XPathElement pathElement = getXPathElement(next, anywhere);
  pathElement.invert = invert;
  elements.add(pathElement);
case XPathLexer.RULE_REF :
case XPathLexer.WILDCARD :
  elements.add( getXPathElement(el, false) );
  i++;
  break;

代码示例来源：origin: uk.co.nichesolutions/antlr4-runtime

public static Collection<ParseTree> findAll(ParseTree tree, String xpath, Parser parser) {
  XPath p = new XPath(parser, xpath);
  return p.evaluate(tree);
}

代码示例来源：origin: antlr/intellij-plugin-v4

public static List<TerminalNode> getAllRuleRefNodes(Parser parser, ParseTree tree, String ruleName) {
  List<TerminalNode> nodes = new ArrayList<TerminalNode>();
  Collection<ParseTree> ruleRefs;
  if ( Grammar.isTokenName(ruleName) ) {
    ruleRefs = XPath.findAll(tree, "//lexerRuleBlock//TOKEN_REF", parser);
  }
  else {
    ruleRefs = XPath.findAll(tree, "//ruleBlock//RULE_REF", parser);
  }
  for (ParseTree node : ruleRefs) {
    TerminalNode terminal = (TerminalNode)node;
    Token rrefToken = terminal.getSymbol();
    String r = rrefToken.getText();
    if ( r.equals(ruleName) ) {
      nodes.add(terminal);
    }
  }
  if ( nodes.size()==0 ) return null;
  return nodes;
}

代码示例来源：origin: io.virtdata/virtdata-lib-realer

public XPath(Parser parser, String path) {
    this.parser = parser;
    this.path = path;
    elements = split(path);
//        System.out.println(Arrays.toString(elements));
  }

代码示例来源：origin: io.virtdata/virtdata-lib-realer

next = tokens.get(i);
  XPathElement pathElement = getXPathElement(next, anywhere);
  pathElement.invert = invert;
  elements.add(pathElement);
case XPathLexer.RULE_REF :
case XPathLexer.WILDCARD :
  elements.add( getXPathElement(el, false) );
  i++;
  break;

代码示例来源：origin: io.virtdata/virtdata-lib-realer

public static Collection<ParseTree> findAll(ParseTree tree, String xpath, Parser parser) {
  XPath p = new XPath(parser, xpath);
  return p.evaluate(tree);
}

代码示例来源：origin: io.virtdata/virtdata-lib-realer

/**
 * Find all nodes using XPath and then try to match those subtrees against
 * this tree pattern.
 *
 * @param tree The {@link ParseTree} to match against this pattern.
 * @param xpath An expression matching the nodes
 *
 * @return A collection of {@link ParseTreeMatch} objects describing the
 * successful matches. Unsuccessful matches are omitted from the result,
 * regardless of the reason for the failure.
 */
public List<ParseTreeMatch> findAll(ParseTree tree, String xpath) {
  Collection<ParseTree> subtrees = XPath.findAll(tree, xpath, matcher.getParser());
  List<ParseTreeMatch> matches = new ArrayList<ParseTreeMatch>();
  for (ParseTree t : subtrees) {
    ParseTreeMatch match = match(t);
    if ( match.succeeded() ) {
      matches.add(match);
    }
  }
  return matches;
}

代码示例来源：origin: com.tunnelvisionlabs/antlr4-runtime

next = tokens.get(i);
  XPathElement pathElement = getXPathElement(next, anywhere);
  pathElement.invert = invert;
  elements.add(pathElement);
case XPathLexer.RULE_REF :
case XPathLexer.WILDCARD :
  elements.add( getXPathElement(el, false) );
  i++;
  break;

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