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antlr
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use jsdoc and const/let

This commit is contained in:
Camilo Roca 2020-03-06 18:18:49 +01:00
parent e7b935e7e2
commit 15720d1e33
1 changed files with 58 additions and 45 deletions
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103
runtime/JavaScript/src/antlr4/atn/ATN.js
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@ -3,51 +3,62 @@
* can be found in the LICENSE.txt file in the project root.
*/
var LL1Analyzer = require('./../LL1Analyzer').LL1Analyzer;
var IntervalSet = require('./../IntervalSet').IntervalSet;
const LL1Analyzer = require('./../LL1Analyzer').LL1Analyzer;
const IntervalSet = require('./../IntervalSet').IntervalSet;
class ATN {
constructor(grammarType , maxTokenType) {
// Used for runtime deserialization of ATNs from strings///
// The type of the ATN.
/**
* Used for runtime deserialization of ATNs from strings
* The type of the ATN.
*/
this.grammarType = grammarType;
// The maximum value for any symbol recognized by a transition in the ATN.
this.maxTokenType = maxTokenType;
this.states = [];
// Each subrule/rule is a decision point and we must track them so we
// can go back later and build DFA predictors for them. This includes
// all the rules, subrules, optional blocks, ()+, ()* etc...
/**
* Each subrule/rule is a decision point and we must track them so we
* can go back later and build DFA predictors for them. This includes
* all the rules, subrules, optional blocks, ()+, ()* etc...
*/
this.decisionToState = [];
// Maps from rule index to starting state number.
this.ruleToStartState = [];
// Maps from rule index to stop state number.
this.ruleToStopState = null;
this.modeNameToStartState = {};
// For lexer ATNs, this maps the rule index to the resulting token type.
// For parser ATNs, this maps the rule index to the generated bypass token
// type if the
// {@link ATNDeserializationOptions//isGenerateRuleBypassTransitions}
// deserialization option was specified; otherwise, this is {@code null}.
/**
* For lexer ATNs, this maps the rule index to the resulting token type.
* For parser ATNs, this maps the rule index to the generated bypass token
* type if the {@link ATNDeserializationOptions//isGenerateRuleBypassTransitions}
* deserialization option was specified; otherwise, this is {@code null}
*/
this.ruleToTokenType = null;
// For lexer ATNs, this is an array of {@link LexerAction} objects which may
// be referenced by action transitions in the ATN.
/**
* For lexer ATNs, this is an array of {@link LexerAction} objects which may
* be referenced by action transitions in the ATN
*/
this.lexerActions = null;
this.modeToStartState = [];
}
// Compute the set of valid tokens that can occur starting in state {@code s}.
// If {@code ctx} is null, the set of tokens will not include what can follow
// the rule surrounding {@code s}. In other words, the set will be
// restricted to tokens reachable staying within {@code s}'s rule.
/**
* Compute the set of valid tokens that can occur starting in state {@code s}.
* If {@code ctx} is null, the set of tokens will not include what can follow
* the rule surrounding {@code s}. In other words, the set will be
* restricted to tokens reachable staying within {@code s}'s rule
*/
nextTokensInContext(s, ctx) {
var anal = new LL1Analyzer(this);
const anal = new LL1Analyzer(this);
return anal.LOOK(s, null, ctx);
}
// Compute the set of valid tokens that can occur starting in {@code s} and
// staying in same rule. {@link Token//EPSILON} is in set if we reach end of
// rule.
/**
* Compute the set of valid tokens that can occur starting in {@code s} and
* staying in same rule. {@link Token//EPSILON} is in set if we reach end of
* rule
*/
nextTokensNoContext(s) {
if (s.nextTokenWithinRule !== null ) {
return s.nextTokenWithinRule;
@ -95,17 +106,17 @@ class ATN {
if ( stateNumber < 0 || stateNumber >= this.states.length ) {
throw("Invalid state number.");
}
var s = this.states[stateNumber];
var following = this.nextTokens(s);
const s = this.states[stateNumber];
let following = this.nextTokens(s);
if (!following.contains(Token.EPSILON)) {
return following;
}
var expected = new IntervalSet();
const expected = new IntervalSet();
expected.addSet(following);
expected.removeOne(Token.EPSILON);
while (ctx !== null && ctx.invokingState >= 0 && following.contains(Token.EPSILON)) {
var invokingState = this.states[ctx.invokingState];
var rt = invokingState.transitions[0];
const invokingState = this.states[ctx.invokingState];
const rt = invokingState.transitions[0];
following = this.nextTokens(rt.followState);
expected.addSet(following);
expected.removeOne(Token.EPSILON);
@ -118,24 +129,26 @@ class ATN {
}
}
// Computes the set of input symbols which could follow ATN state number
// {@code stateNumber} in the specified full {@code context}. This method
// considers the complete parser context, but does not evaluate semantic
// predicates (i.e. all predicates encountered during the calculation are
// assumed true). If a path in the ATN exists from the starting state to the
// {@link RuleStopState} of the outermost context without matching any
// symbols, {@link Token//EOF} is added to the returned set.
//
// <p>If {@code context} is {@code null}, it is treated as
// {@link ParserRuleContext//EMPTY}.</p>
//
// @param stateNumber the ATN state number
// @param context the full parse context
// @return The set of potentially valid input symbols which could follow the
// specified state in the specified context.
// @throws IllegalArgumentException if the ATN does not contain a state with
// number {@code stateNumber}
var Token = require('./../Token').Token;
/**
* Computes the set of input symbols which could follow ATN state number
* {@code stateNumber} in the specified full {@code context}. This method
* considers the complete parser context, but does not evaluate semantic
* predicates (i.e. all predicates encountered during the calculation are
* assumed true). If a path in the ATN exists from the starting state to the
* {@link RuleStopState} of the outermost context without matching any
* symbols, {@link Token//EOF} is added to the returned set.
*
* <p>If {@code context} is {@code null}, it is treated as
* {@link ParserRuleContext//EMPTY}.</p>
*
* @param stateNumber the ATN state number
* @param context the full parse context
* @return The set of potentially valid input symbols which could follow the
* specified state in the specified context.
* @throws IllegalArgumentException if the ATN does not contain a state with
* number {@code stateNumber}
*/
const Token = require('./../Token').Token;
ATN.INVALID_ALT_NUMBER = 0;