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antlr
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use const/let for better scoping 

use object destructuring on import
This commit is contained in:
Camilo Roca 2020-02-16 17:37:46 +01:00
parent 4a7820aa4b
commit 79d2c1c163
1 changed files with 20 additions and 22 deletions
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40
runtime/JavaScript/src/antlr4/tree/Trees.js
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@ -3,14 +3,12 @@
* can be found in the LICENSE.txt file in the project root.
*/
var Utils = require('./../Utils');
var Token = require('./../Token').Token;
var RuleNode = require('./Tree').RuleNode;
var ErrorNode = require('./Tree').ErrorNode;
var TerminalNode = require('./Tree').TerminalNode;
var ParserRuleContext = require('./../ParserRuleContext').ParserRuleContext;
var RuleContext = require('./../RuleContext').RuleContext;
var INVALID_ALT_NUMBER = require('./../atn/ATN').INVALID_ALT_NUMBER;
const Utils = require('./../Utils');
const {Token} = require('./../Token');
const {RuleNode, ErrorNode, TerminalNode} = require('./Tree');
const {ParserRuleContext} = require('./../ParserRuleContext');
const {RuleContext} = require('./../RuleContext');
const INVALID_ALT_NUMBER = require('./../atn/ATN').INVALID_ALT_NUMBER;
/** A set of utility routines useful for all kinds of ANTLR trees. */
@ -26,18 +24,18 @@ Trees.toStringTree = function(tree, ruleNames, recog) {
if(recog!==null) {
ruleNames = recog.ruleNames;
}
var s = Trees.getNodeText(tree, ruleNames);
let s = Trees.getNodeText(tree, ruleNames);
s = Utils.escapeWhitespace(s, false);
var c = tree.getChildCount();
const c = tree.getChildCount();
if(c===0) {
return s;
}
var res = "(" + s + ' ';
let res = "(" + s + ' ';
if(c>0) {
s = Trees.toStringTree(tree.getChild(0), ruleNames);
res = res.concat(s);
}
for(var i=1;i<c;i++) {
for(let i=1;i<c;i++) {
s = Trees.toStringTree(tree.getChild(i), ruleNames);
res = res.concat(' ' + s);
}
@ -53,7 +51,7 @@ Trees.getNodeText = function(t, ruleNames, recog) {
}
if(ruleNames!==null) {
if (t instanceof RuleContext) {
var altNumber = t.getAltNumber();
const altNumber = t.getAltNumber();
if ( altNumber!=INVALID_ALT_NUMBER ) {
return ruleNames[t.ruleIndex]+":"+altNumber;
}
@ -67,7 +65,7 @@ Trees.getNodeText = function(t, ruleNames, recog) {
}
}
// no recog for rule names
var payload = t.getPayload();
const payload = t.getPayload();
if (payload instanceof Token ) {
return payload.text;
}
@ -77,8 +75,8 @@ Trees.getNodeText = function(t, ruleNames, recog) {
// Return ordered list of all children of this node
Trees.getChildren = function(t) {
var list = [];
for(var i=0;i<t.getChildCount();i++) {
const list = [];
for(let i=0;i<t.getChildCount();i++) {
list.push(t.getChild(i));
}
return list;
@ -88,7 +86,7 @@ Trees.getChildren = function(t) {
// list is the root and the last is the parent of this node.
//
Trees.getAncestors = function(t) {
var ancestors = [];
let ancestors = [];
t = t.getParent();
while(t!==null) {
ancestors = [t].concat(ancestors);
@ -106,7 +104,7 @@ Trees.findAllRuleNodes = function(t, ruleIndex) {
};
Trees.findAllNodes = function(t, index, findTokens) {
var nodes = [];
const nodes = [];
Trees._findAllNodes(t, index, findTokens, nodes);
return nodes;
};
@ -123,14 +121,14 @@ Trees._findAllNodes = function(t, index, findTokens, nodes) {
}
}
// check children
for(var i=0;i<t.getChildCount();i++) {
for(let i=0;i<t.getChildCount();i++) {
Trees._findAllNodes(t.getChild(i), index, findTokens, nodes);
}
};
Trees.descendants = function(t) {
var nodes = [t];
for(var i=0;i<t.getChildCount();i++) {
let nodes = [t];
for(let i=0;i<t.getChildCount();i++) {
nodes = nodes.concat(Trees.descendants(t.getChild(i)));
}
return nodes;