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java-parser

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java-parser - npm Package Compare versions

Comparing version 2.2.0 to 2.3.0

10

package.json
{
"name": "java-parser",
"version": "2.2.0",
"version": "2.3.0",
"description": "Java Parser in JavaScript",
"main": "src/index.js",
"type": "module",
"exports": "./src/index.js",
"repository": "https://github.com/jhipster/prettier-java/tree/main/packages/java-parser",

@@ -10,3 +11,4 @@ "license": "Apache-2.0",

"dependencies": {
"chevrotain": "6.5.0",
"chevrotain": "11.0.3",
"chevrotain-allstar": "0.3.1",
"lodash": "4.17.21"

@@ -19,3 +21,3 @@ },

},
"gitHead": "00a8585d20c56d933ce4c89dcb532d9e98d1a4cf"
"gitHead": "30e1cad12e8936df43c25eeb9dad5aef20d9af6c"
}

16

src/comments.js

@@ -1,5 +0,3 @@

"use strict";
import findLast from "lodash/findLast.js";
const findLast = require("lodash/findLast");
/**

@@ -168,3 +166,3 @@ * Search where is the position of the comment in the token array by

*/
function attachComments(
export function attachComments(
tokens,

@@ -260,3 +258,3 @@ comments,

*/
function matchFormatterOffOnPairs(comments) {
export function matchFormatterOffOnPairs(comments) {
const onOffComments = comments.filter(comment =>

@@ -300,3 +298,3 @@ isFormatterOffOnComment(comment)

*/
function shouldNotFormat(node, commentPairs) {
export function shouldNotFormat(node, commentPairs) {
const matchingPair = findLast(

@@ -314,7 +312,1 @@ commentPairs,

}
module.exports = {
matchFormatterOffOnPairs,
shouldNotFormat,
attachComments
};

17

src/index.js

@@ -1,13 +0,12 @@

"use strict";
const JavaLexer = require("./lexer");
const JavaParser = require("./parser");
const { attachComments, matchFormatterOffOnPairs } = require("./comments");
import JavaLexer from "./lexer.js";
import JavaParser from "./parser.js";
import { attachComments, matchFormatterOffOnPairs } from "./comments.js";
const parser = new JavaParser();
const BaseJavaCstVisitor = parser.getBaseCstVisitorConstructor();
const BaseJavaCstVisitorWithDefaults =
export const BaseJavaCstVisitor = parser.getBaseCstVisitorConstructor();
export const BaseJavaCstVisitorWithDefaults =
parser.getBaseCstVisitorConstructorWithDefaults();
function lexAndParse(inputText, entryPoint = "compilationUnit") {
export function lexAndParse(inputText, entryPoint = "compilationUnit") {
// Lex

@@ -64,7 +63,7 @@ const lexResult = JavaLexer.tokenize(inputText);

function parse(inputText, entryPoint = "compilationUnit") {
export function parse(inputText, entryPoint = "compilationUnit") {
return lexAndParse(inputText, entryPoint).cst;
}
module.exports = {
export default {
lexAndParse,

@@ -71,0 +70,0 @@ parse,

12

src/lexer.js

@@ -1,12 +0,8 @@

"use strict";
const chevrotain = require("chevrotain");
const { allTokens } = require("./tokens");
const { getSkipValidations } = require("./utils");
import { Lexer } from "chevrotain";
import { allTokens } from "./tokens.js";
import { getSkipValidations } from "./utils.js";
const Lexer = chevrotain.Lexer;
const JavaLexer = new Lexer(allTokens, {
export default new Lexer(allTokens, {
ensureOptimizations: true,
skipValidations: getSkipValidations()
});
module.exports = JavaLexer;

70

src/parser.js

@@ -1,15 +0,15 @@

"use strict";
const { Parser, isRecognitionException } = require("chevrotain");
const { allTokens, tokens: t } = require("./tokens");
const lexicalStructure = require("./productions/lexical-structure");
const typesValuesVariables = require("./productions/types-values-and-variables");
const names = require("./productions/names");
const packagesModules = require("./productions/packages-and-modules");
const classes = require("./productions/classes");
const interfaces = require("./productions/interfaces");
const arrays = require("./productions/arrays");
const blocksStatements = require("./productions/blocks-and-statements");
const expressions = require("./productions/expressions");
const { getSkipValidations } = require("./utils");
const { shouldNotFormat } = require("./comments");
import { CstParser, isRecognitionException } from "chevrotain";
import { LLStarLookaheadStrategy } from "chevrotain-allstar";
import { allTokens, tokens as t } from "./tokens.js";
import * as lexicalStructure from "./productions/lexical-structure.js";
import * as typesValuesVariables from "./productions/types-values-and-variables.js";
import * as names from "./productions/names.js";
import * as packagesModules from "./productions/packages-and-modules.js";
import * as classes from "./productions/classes.js";
import * as interfaces from "./productions/interfaces.js";
import * as arrays from "./productions/arrays.js";
import * as blocksStatements from "./productions/blocks-and-statements.js";
import * as expressions from "./productions/expressions.js";
import { getSkipValidations } from "./utils.js";
import { shouldNotFormat } from "./comments.js";

@@ -39,6 +39,8 @@ /**

*/
class JavaParser extends Parser {
export default class JavaParser extends CstParser {
constructor() {
super(allTokens, {
maxLookahead: 1,
lookaheadStrategy: new LLStarLookaheadStrategy({
logging: getSkipValidations() ? () => {} : undefined
}),
nodeLocationTracking: "full",

@@ -81,12 +83,12 @@ // traceInitPerf: 2,

cstPostNonTerminal(ruleCstResult, ruleName) {
if (this.isBackTracking()) {
return;
}
super.cstPostNonTerminal(ruleCstResult, ruleName);
if (this.isBackTracking() === false) {
this.mostEnclosiveCstNodeByStartOffset[
ruleCstResult.location.startOffset
] = ruleCstResult;
this.mostEnclosiveCstNodeByEndOffset[ruleCstResult.location.endOffset] =
ruleCstResult;
this.mostEnclosiveCstNodeByStartOffset[ruleCstResult.location.startOffset] =
ruleCstResult;
this.mostEnclosiveCstNodeByEndOffset[ruleCstResult.location.endOffset] =
ruleCstResult;
shouldNotFormat(ruleCstResult, this.onOffCommentPairs);
}
shouldNotFormat(ruleCstResult, this.onOffCommentPairs);
}

@@ -100,5 +102,16 @@

try {
// hack to enable outputting none CST values from grammar rules.
this.outputCst = false;
return production.call(this);
// hack to enable outputting non-CST values from grammar rules.
const { ruleName, originalGrammarAction } = production;
try {
this.ruleInvocationStateUpdate(
this.fullRuleNameToShort[ruleName],
ruleName,
this.subruleIdx
);
return originalGrammarAction.call(this);
} catch (e) {
return this.invokeRuleCatch(e, true, () => undefined);
} finally {
this.ruleFinallyStateUpdate();
}
} catch (e) {

@@ -110,3 +123,2 @@ if (isRecognitionException(e)) {

} finally {
this.outputCst = true;
this.reloadRecogState(orgState);

@@ -122,3 +134,1 @@ this.isBackTrackingStack.pop();

}
module.exports = JavaParser;

10

src/productions/arrays.js

@@ -1,6 +0,4 @@

"use strict";
import { tokenMatcher } from "chevrotain";
const { tokenMatcher } = require("chevrotain");
function defineRules($, t) {
export function defineRules($, t) {
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-10.html#jls-ArrayInitializer

@@ -31,5 +29,1 @@ $.RULE("arrayInitializer", () => {

}
module.exports = {
defineRules
};

165

src/productions/blocks-and-statements.js

@@ -1,9 +0,7 @@

"use strict";
import { tokenMatcher } from "chevrotain";
const { tokenMatcher } = require("chevrotain");
// Spec Deviation: The "*NoShortIf" variations were removed as the ambiguity of
// the dangling else is resolved by attaching an "else" block
// to the nearest "if"
function defineRules($, t) {
export function defineRules($, t) {
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-14.html#jls-Block

@@ -28,21 +26,7 @@ $.RULE("block", () => {

$.RULE("blockStatement", () => {
const isLocalVariableDeclaration = this.BACKTRACK_LOOKAHEAD(
$.isLocalVariableDeclaration
);
const isClassDeclaration = this.BACKTRACK_LOOKAHEAD($.isClassDeclaration);
$.OR({
DEF: [
{
GATE: () => isLocalVariableDeclaration,
ALT: () => $.SUBRULE($.localVariableDeclarationStatement)
},
{
GATE: () => isClassDeclaration,
ALT: () => $.SUBRULE($.classDeclaration)
},
{
ALT: () => $.SUBRULE($.interfaceDeclaration)
},
{ ALT: () => $.SUBRULE($.localVariableDeclarationStatement) },
{ ALT: () => $.SUBRULE($.classDeclaration) },
{ ALT: () => $.SUBRULE($.interfaceDeclaration) },
{ ALT: () => $.SUBRULE($.statement) }

@@ -82,15 +66,10 @@ ],

$.RULE("statement", () => {
$.OR({
DEF: [
{
ALT: () => $.SUBRULE($.statementWithoutTrailingSubstatement)
},
{ ALT: () => $.SUBRULE($.labeledStatement) },
// Spec deviation: combined "IfThenStatement" and "IfThenElseStatement"
{ ALT: () => $.SUBRULE($.ifStatement) },
{ ALT: () => $.SUBRULE($.whileStatement) },
{ ALT: () => $.SUBRULE($.forStatement) }
],
MAX_LOOKAHEAD: 2
});
$.OR([
{ ALT: () => $.SUBRULE($.statementWithoutTrailingSubstatement) },
{ ALT: () => $.SUBRULE($.labeledStatement) },
// Spec deviation: combined "IfThenStatement" and "IfThenElseStatement"
{ ALT: () => $.SUBRULE($.ifStatement) },
{ ALT: () => $.SUBRULE($.whileStatement) },
{ ALT: () => $.SUBRULE($.forStatement) }
]);
});

@@ -103,6 +82,3 @@

{ ALT: () => $.SUBRULE($.block) },
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.yieldStatement),
ALT: () => $.SUBRULE($.yieldStatement)
},
{ ALT: () => $.SUBRULE($.yieldStatement) },
{ ALT: () => $.SUBRULE($.emptyStatement) },

@@ -194,9 +170,4 @@ {

$.OR([
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.isClassicSwitchLabel),
ALT: () => $.MANY(() => $.SUBRULE($.switchBlockStatementGroup))
},
{
ALT: () => $.MANY2(() => $.SUBRULE($.switchRule))
}
{ ALT: () => $.MANY(() => $.SUBRULE($.switchBlockStatementGroup)) },
{ ALT: () => $.MANY2(() => $.SUBRULE($.switchRule)) }
]);

@@ -231,3 +202,2 @@ $.CONSUME(t.RCurly);

{
GATE: () => this.BACKTRACK_LOOKAHEAD($.pattern),
ALT: () => {

@@ -304,6 +274,3 @@ $.SUBRULE($.pattern);

$.OR([
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.isBasicForStatement),
ALT: () => $.SUBRULE($.basicForStatement)
},
{ ALT: () => $.SUBRULE($.basicForStatement) },
{ ALT: () => $.SUBRULE($.enhancedForStatement) }

@@ -335,6 +302,3 @@ ]);

$.OR([
{
GATE: () => $.BACKTRACK_LOOKAHEAD($.isLocalVariableDeclaration),
ALT: () => $.SUBRULE($.localVariableDeclaration)
},
{ ALT: () => $.SUBRULE($.localVariableDeclaration) },
{ ALT: () => $.SUBRULE($.statementExpressionList) }

@@ -418,25 +382,22 @@ ]);

$.RULE("tryStatement", () => {
$.OR({
DEF: [
{
ALT: () => {
$.CONSUME(t.Try);
$.SUBRULE($.block);
$.OR2([
{
ALT: () => {
$.SUBRULE($.catches);
$.OPTION(() => {
$.SUBRULE($.finally);
});
}
},
{ ALT: () => $.SUBRULE2($.finally) }
]);
}
},
{ ALT: () => $.SUBRULE($.tryWithResourcesStatement) }
],
MAX_LOOKAHEAD: 2
});
$.OR([
{
ALT: () => {
$.CONSUME(t.Try);
$.SUBRULE($.block);
$.OR2([
{
ALT: () => {
$.SUBRULE($.catches);
$.OPTION(() => {
$.SUBRULE($.finally);
});
}
},
{ ALT: () => $.SUBRULE2($.finally) }
]);
}
},
{ ALT: () => $.SUBRULE($.tryWithResourcesStatement) }
]);
});

@@ -523,6 +484,3 @@

$.OR([
{
GATE: () => $.BACKTRACK_LOOKAHEAD($.isLocalVariableDeclaration),
ALT: () => $.SUBRULE($.localVariableDeclaration)
},
{ ALT: () => $.SUBRULE($.localVariableDeclaration) },
{ ALT: () => $.SUBRULE($.variableAccess) }

@@ -546,47 +504,2 @@ ]);

});
// ------------------------------------
// Special optimized backtracking rules.
// ------------------------------------
$.RULE("isBasicForStatement", () => {
$.CONSUME(t.For);
$.CONSUME(t.LBrace);
$.OPTION(() => {
$.SUBRULE($.forInit);
});
$.CONSUME(t.Semicolon);
// consuming the first semiColon distinguishes between
// "basic" and "enhanced" for statements
return true;
});
$.RULE("isLocalVariableDeclaration", () => {
$.MANY(() => {
$.SUBRULE($.variableModifier);
});
$.SUBRULE($.localVariableType);
$.SUBRULE($.variableDeclaratorId);
const nextTokenType = this.LA(1).tokenType;
switch (nextTokenType) {
// Int x;
case t.Semicolon:
// Int x, y, z;
case t.Comma:
// Int x = 5;
case t.Equals:
return true;
default:
return false;
}
});
$.RULE("isClassicSwitchLabel", () => {
$.SUBRULE($.switchLabel);
$.CONSUME(t.Colon);
});
}
module.exports = {
defineRules
};

295

src/productions/classes.js

@@ -1,7 +0,4 @@

"use strict";
import { tokenMatcher } from "chevrotain";
const { isRecognitionException, tokenMatcher } = require("chevrotain");
const { classBodyTypes } = require("./utils/class-body-types");
function defineRules($, t) {
export function defineRules($, t) {
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-8.html#jls-ClassDeclaration

@@ -116,24 +113,7 @@ $.RULE("classDeclaration", () => {

$.RULE("classBodyDeclaration", () => {
const nextRuleType = $.BACKTRACK_LOOKAHEAD(
$.identifyClassBodyDeclarationType
);
$.OR([
{
GATE: () =>
nextRuleType >= classBodyTypes.fieldDeclaration &&
nextRuleType <= classBodyTypes.semiColon,
ALT: () =>
$.SUBRULE($.classMemberDeclaration, {
ARGS: [nextRuleType]
})
},
// no gate needed for the initializers because these are LL(1) rules.
{ ALT: () => $.SUBRULE($.classMemberDeclaration) },
{ ALT: () => $.SUBRULE($.instanceInitializer) },
{ ALT: () => $.SUBRULE($.staticInitializer) },
{
GATE: () =>
tokenMatcher(nextRuleType, classBodyTypes.constructorDeclaration),
ALT: () => $.SUBRULE($.constructorDeclaration)
}
{ ALT: () => $.SUBRULE($.constructorDeclaration) }
]);

@@ -143,24 +123,9 @@ });

// https://docs.oracle.com/javase/specs/jls/se16/html/jls-8.html#jls-ClassMemberDeclaration
$.RULE("classMemberDeclaration", nextRuleType => {
$.RULE("classMemberDeclaration", () => {
$.OR([
{
GATE: () => nextRuleType === classBodyTypes.fieldDeclaration,
ALT: () => $.SUBRULE($.fieldDeclaration)
},
{
GATE: () => nextRuleType === classBodyTypes.methodDeclaration,
ALT: () => $.SUBRULE($.methodDeclaration)
},
{
GATE: () => nextRuleType === classBodyTypes.classDeclaration,
ALT: () => $.SUBRULE($.classDeclaration)
},
{
GATE: () => nextRuleType === classBodyTypes.interfaceDeclaration,
ALT: () => $.SUBRULE($.interfaceDeclaration)
},
{
// No GATE is needed as this is LL(1)
ALT: () => $.CONSUME(t.Semicolon)
}
{ ALT: () => $.SUBRULE($.fieldDeclaration) },
{ ALT: () => $.SUBRULE($.methodDeclaration) },
{ ALT: () => $.SUBRULE($.classDeclaration) },
{ ALT: () => $.SUBRULE($.interfaceDeclaration) },
{ ALT: () => $.CONSUME(t.Semicolon) }
]);

@@ -360,9 +325,18 @@ });

// https://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-MethodDeclarator
// https://docs.oracle.com/javase/specs/jls/se21/html/jls-8.html#jls-MethodDeclarator
$.RULE("methodDeclarator", () => {
$.CONSUME(t.Identifier);
$.CONSUME(t.LBrace);
$.OPTION(() => {
$.SUBRULE($.formalParameterList);
});
$.OR([
{
ALT: () => {
$.SUBRULE($.receiverParameter);
$.OPTION(() => {
$.CONSUME(t.Comma);
$.SUBRULE($.formalParameterList);
});
}
},
{ ALT: () => $.OPTION1(() => $.SUBRULE1($.formalParameterList)) }
]);
$.CONSUME(t.RBrace);

@@ -400,6 +374,3 @@ $.OPTION2(() => {

// Spec Deviation: extracted to "variableParaRegularParameter"
{
GATE: $.BACKTRACK($.variableParaRegularParameter),
ALT: () => $.SUBRULE($.variableParaRegularParameter)
},
{ ALT: () => $.SUBRULE($.variableParaRegularParameter) },
{ ALT: () => $.SUBRULE($.variableArityParameter) }

@@ -509,14 +480,14 @@ ]);

$.CONSUME(t.LBrace);
$.OPTION2({
// a "formalParameterList" and a "receiverParameter"
// cannot be distinguished using fixed lookahead.
GATE: $.BACKTRACK($.receiverParameter),
DEF: () => {
$.SUBRULE($.receiverParameter);
$.CONSUME(t.Comma);
}
});
$.OPTION3(() => {
$.SUBRULE($.formalParameterList);
});
$.OR([
{
ALT: () => {
$.SUBRULE($.receiverParameter);
$.OPTION1(() => {
$.CONSUME(t.Comma);
$.SUBRULE($.formalParameterList);
});
}
},
{ ALT: () => $.OPTION2(() => $.SUBRULE1($.formalParameterList)) }
]);
$.CONSUME(t.RBrace);

@@ -534,7 +505,4 @@ });

$.CONSUME(t.LCurly);
$.OPTION({
GATE: $.BACKTRACK($.explicitConstructorInvocation),
DEF: () => {
$.SUBRULE($.explicitConstructorInvocation);
}
$.OPTION(() => {
$.SUBRULE($.explicitConstructorInvocation);
});

@@ -750,6 +718,3 @@ $.OPTION2(() => {

$.OR([
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.isCompactConstructorDeclaration),
ALT: () => $.SUBRULE($.compactConstructorDeclaration)
},
{ ALT: () => $.SUBRULE($.compactConstructorDeclaration) },
{ ALT: () => $.SUBRULE($.classBodyDeclaration) }

@@ -768,174 +733,2 @@ ]);

$.RULE("isClassDeclaration", () => {
let isEmptyTypeDeclaration = false;
if (
$.OPTION(() => {
$.CONSUME(t.Semicolon);
})
) {
// an empty "TypeDeclaration"
isEmptyTypeDeclaration = true;
}
try {
// The {classModifier} is a super grammar of the "interfaceModifier"
// So we must parse all the "{classModifier}" before we can distinguish
// between the alternatives.
$.MANY({
GATE: () =>
(tokenMatcher($.LA(1).tokenType, t.At) &&
tokenMatcher($.LA(2).tokenType, t.Interface)) === false,
DEF: () => {
$.SUBRULE($.classModifier);
}
});
} catch (e) {
if (isRecognitionException(e)) {
// TODO: add original syntax error?
throw "Cannot Identify if the <TypeDeclaration> is a <ClassDeclaration> or an <InterfaceDeclaration>";
} else {
throw e;
}
}
if (isEmptyTypeDeclaration) {
return false;
}
const nextTokenType = this.LA(1).tokenType;
return (
tokenMatcher(nextTokenType, t.Class) ||
tokenMatcher(nextTokenType, t.Enum) ||
(tokenMatcher(nextTokenType, t.Record) &&
tokenMatcher(this.LA(2).tokenType, t.Identifier))
);
});
$.RULE("identifyClassBodyDeclarationType", () => {
try {
let nextTokenType = this.LA(1).tokenType;
let nextNextTokenType = this.LA(2).tokenType;
switch (nextTokenType) {
case t.Semicolon:
return classBodyTypes.semiColon;
case t.LCurly:
return classBodyTypes.instanceInitializer;
case t.Static:
switch (nextNextTokenType) {
case t.LCurly:
return classBodyTypes.staticInitializer;
}
}
// We have to look beyond the modifiers to distinguish between the declaration types.
$.MANY({
GATE: () =>
(tokenMatcher($.LA(1).tokenType, t.At) &&
tokenMatcher($.LA(2).tokenType, t.Interface)) === false,
DEF: () => {
// This alternation includes all possible modifiers for all types of "ClassBodyDeclaration"
// Certain combinations are syntactically invalid, this is **not** checked here,
// Invalid combinations will cause a descriptive parsing error message to be
// Created inside the relevant parsing rules **after** this lookahead
// analysis.
$.OR([
{
GATE: () =>
(tokenMatcher($.LA(1).tokenType, t.At) &&
tokenMatcher($.LA(2).tokenType, t.Interface)) === false,
ALT: () => $.SUBRULE($.annotation)
},
{ ALT: () => $.CONSUME(t.Public) },
{ ALT: () => $.CONSUME(t.Protected) },
{ ALT: () => $.CONSUME(t.Private) },
{ ALT: () => $.CONSUME(t.Abstract) },
{ ALT: () => $.CONSUME(t.Static) },
{ ALT: () => $.CONSUME(t.Final) },
{ ALT: () => $.CONSUME(t.Transient) },
{ ALT: () => $.CONSUME(t.Volatile) },
{ ALT: () => $.CONSUME(t.Synchronized) },
{ ALT: () => $.CONSUME(t.Native) },
{ ALT: () => $.CONSUME(t.Sealed) },
{ ALT: () => $.CONSUME(t.NonSealed) },
{ ALT: () => $.CONSUME(t.Strictfp) }
]);
}
});
nextTokenType = this.LA(1).tokenType;
nextNextTokenType = this.LA(2).tokenType;
if (
tokenMatcher(nextTokenType, t.Identifier) &&
tokenMatcher(nextNextTokenType, t.LBrace)
) {
return classBodyTypes.constructorDeclaration;
}
if (
tokenMatcher(nextTokenType, t.Class) ||
tokenMatcher(nextTokenType, t.Enum) ||
tokenMatcher(nextTokenType, t.Record)
) {
return classBodyTypes.classDeclaration;
}
if (
tokenMatcher(nextTokenType, t.Interface) ||
tokenMatcher(nextTokenType, t.At)
) {
return classBodyTypes.interfaceDeclaration;
}
if (tokenMatcher(nextTokenType, t.Void)) {
// method with result type "void"
return classBodyTypes.methodDeclaration;
}
// Type Arguments common prefix
if (tokenMatcher(nextTokenType, t.Less)) {
this.SUBRULE($.typeParameters);
const nextTokenType = this.LA(1).tokenType;
const nextNextTokenType = this.LA(2).tokenType;
// "<T> foo(" -> constructor
if (
tokenMatcher(nextTokenType, t.Identifier) &&
tokenMatcher(nextNextTokenType, t.LBrace)
) {
return classBodyTypes.constructorDeclaration;
}
// typeParameters can only appear in method or constructor
// declarations, so if it is not a constructor it must be a method
return classBodyTypes.methodDeclaration;
}
// Only field or method declarations may be valid at this point.
// All other alternatives should have been attempted.
// **both** start with "unannType"
this.SUBRULE($.unannType);
const nextToken = this.LA(1);
nextNextTokenType = this.LA(2).tokenType;
// "foo(..." --> look like method start
if (
tokenMatcher(nextToken, t.Identifier) &&
tokenMatcher(nextNextTokenType, t.LBrace)
) {
return classBodyTypes.methodDeclaration;
}
// a valid field
// TODO: because we use token categories we should use tokenMatcher everywhere.
if (tokenMatcher(nextToken, t.Identifier)) {
return classBodyTypes.fieldDeclaration;
}
return classBodyTypes.unknown;
} catch (e) {
// TODO: add info from the original error
throw Error("Cannot Identify the type of a <classBodyDeclaration>");
}
});
$.RULE("isDims", () => {

@@ -948,12 +741,2 @@ $.MANY($.annotation);

});
$.RULE("isCompactConstructorDeclaration", () => {
$.MANY($.constructorModifier);
$.SUBRULE($.simpleTypeName);
$.CONSUME(t.LCurly);
});
}
module.exports = {
defineRules
};

303

src/productions/expressions.js

@@ -1,10 +0,6 @@

"use strict";
const { tokenMatcher } = require("chevrotain");
function defineRules($, t) {
import { tokenMatcher } from "chevrotain";
export function defineRules($, t) {
$.RULE("expression", () => {
$.OR([
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.isLambdaExpression),
ALT: () => $.SUBRULE($.lambdaExpression)
},
{ ALT: () => $.SUBRULE($.lambdaExpression) },
{ ALT: () => $.SUBRULE($.ternaryExpression) }

@@ -72,9 +68,4 @@ ]);

$.RULE("lambdaParameter", () => {
// TODO: performance, investigate the performance boost that could
// be gained by refactoring out the backtracking.
$.OR([
{
GATE: $.BACKTRACK($.regularLambdaParameter),
ALT: () => $.SUBRULE($.regularLambdaParameter)
},
{ ALT: () => $.SUBRULE($.regularLambdaParameter) },
{ ALT: () => $.SUBRULE($.variableArityParameter) }

@@ -129,9 +120,4 @@ ]);

$.OR1([
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.pattern),
ALT: () => $.SUBRULE($.pattern)
},
{
ALT: () => $.SUBRULE($.referenceType)
}
{ ALT: () => $.SUBRULE($.pattern) },
{ ALT: () => $.SUBRULE($.referenceType) }
]);

@@ -220,7 +206,2 @@ }

$.RULE("primaryPrefix", () => {
let isCastExpression = false;
if (tokenMatcher($.LA(1).tokenType, t.LBrace)) {
isCastExpression = this.BACKTRACK_LOOKAHEAD($.isCastExpression);
}
$.OR([

@@ -232,6 +213,3 @@ { ALT: () => $.SUBRULE($.literal) },

{ ALT: () => $.SUBRULE($.fqnOrRefType) },
{
GATE: () => isCastExpression,
ALT: () => $.SUBRULE($.castExpression)
},
{ ALT: () => $.SUBRULE($.castExpression) },
{ ALT: () => $.SUBRULE($.parenthesisExpression) },

@@ -244,31 +222,28 @@ { ALT: () => $.SUBRULE($.newExpression) },

$.RULE("primarySuffix", () => {
$.OR({
DEF: [
{
ALT: () => {
$.CONSUME(t.Dot);
$.OR2([
{ ALT: () => $.CONSUME(t.This) },
{
ALT: () =>
$.SUBRULE($.unqualifiedClassInstanceCreationExpression)
},
{
ALT: () => {
$.OPTION(() => {
$.SUBRULE($.typeArguments);
});
$.CONSUME(t.Identifier);
}
$.OR([
{
ALT: () => {
$.CONSUME(t.Dot);
$.OR2([
{ ALT: () => $.CONSUME(t.This) },
{
ALT: () => $.SUBRULE($.unqualifiedClassInstanceCreationExpression)
},
{
ALT: () => {
$.OPTION(() => {
$.SUBRULE($.typeArguments);
});
$.CONSUME(t.Identifier);
}
]);
}
},
{ ALT: () => $.SUBRULE($.methodInvocationSuffix) },
{ ALT: () => $.SUBRULE($.classLiteralSuffix) },
{ ALT: () => $.SUBRULE($.arrayAccessSuffix) },
{ ALT: () => $.SUBRULE($.methodReferenceSuffix) }
],
MAX_LOOKAHEAD: 2
});
},
{ ALT: () => $.SUBRULE($.templateArgument) }
]);
}
},
{ ALT: () => $.SUBRULE($.methodInvocationSuffix) },
{ ALT: () => $.SUBRULE($.classLiteralSuffix) },
{ ALT: () => $.SUBRULE($.arrayAccessSuffix) },
{ ALT: () => $.SUBRULE($.methodReferenceSuffix) }
]);
});

@@ -281,9 +256,16 @@

$.MANY2({
// ".class" is a classLiteralSuffix
GATE: () =>
// avoids ambiguity with ".this" and ".new" which are parsed as a primary suffix.
tokenMatcher(this.LA(2).tokenType, t.Class) === false &&
tokenMatcher(this.LA(2).tokenType, t.This) === false &&
tokenMatcher(this.LA(2).tokenType, t.New) === false,
$.MANY({
// avoids ambiguity with primary suffixes
GATE: () => {
const nextNextToken = $.LA(2);
return !(
tokenMatcher(nextNextToken, t.Class) ||
tokenMatcher(nextNextToken, t.This) ||
tokenMatcher(nextNextToken, t.New) ||
tokenMatcher(nextNextToken, t.StringLiteral) ||
tokenMatcher(nextNextToken, t.TextBlock) ||
tokenMatcher(nextNextToken, t.StringTemplateBegin) ||
tokenMatcher(nextNextToken, t.TextBlockTemplateBegin)
);
},
DEF: () => {

@@ -367,8 +349,3 @@ $.CONSUME(t.Dot);

$.OR([
{
// TODO: performance: can avoid backtracking again here, parent rule could have this information
// when it checks isCastExpression (refactor needed)
GATE: () => this.BACKTRACK_LOOKAHEAD($.isPrimitiveCastExpression),
ALT: () => $.SUBRULE($.primitiveCastExpression)
},
{ ALT: () => $.SUBRULE($.primitiveCastExpression) },
{ ALT: () => $.SUBRULE($.referenceTypeCastExpression) }

@@ -393,6 +370,3 @@ ]);

$.OR([
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.isLambdaExpression),
ALT: () => $.SUBRULE($.lambdaExpression)
},
{ ALT: () => $.SUBRULE($.lambdaExpression) },
{ ALT: () => $.SUBRULE($.unaryExpressionNotPlusMinus) }

@@ -402,20 +376,6 @@ ]);

const newExpressionTypes = {
arrayCreationExpression: 1,
unqualifiedClassInstanceCreationExpression: 2
};
$.RULE("newExpression", () => {
const type = this.BACKTRACK_LOOKAHEAD($.identifyNewExpressionType);
$.OR([
{
GATE: () => type === newExpressionTypes.arrayCreationExpression,
ALT: () => $.SUBRULE($.arrayCreationExpression)
},
{
GATE: () =>
type ===
newExpressionTypes.unqualifiedClassInstanceCreationExpression,
ALT: () => $.SUBRULE($.unqualifiedClassInstanceCreationExpression)
}
{ ALT: () => $.SUBRULE($.arrayCreationExpression) },
{ ALT: () => $.SUBRULE($.unqualifiedClassInstanceCreationExpression) }
]);

@@ -459,9 +419,6 @@ });

$.RULE("typeArgumentsOrDiamond", () => {
$.OR({
DEF: [
{ ALT: () => $.SUBRULE($.diamond) },
{ ALT: () => $.SUBRULE($.typeArguments) }
],
MAX_LOOKAHEAD: 2
});
$.OR([
{ ALT: () => $.SUBRULE($.diamond) },
{ ALT: () => $.SUBRULE($.typeArguments) }
]);
});

@@ -494,6 +451,3 @@

$.OR([
{
GATE: $.BACKTRACK($.primitiveType),
ALT: () => $.SUBRULE($.primitiveType)
},
{ ALT: () => $.SUBRULE($.primitiveType) },
{ ALT: () => $.SUBRULE($.classOrInterfaceType) }

@@ -503,6 +457,3 @@ ]);

$.OR2([
{
GATE: $.BACKTRACK($.arrayCreationDefaultInitSuffix),
ALT: () => $.SUBRULE($.arrayCreationDefaultInitSuffix)
},
{ ALT: () => $.SUBRULE($.arrayCreationDefaultInitSuffix) },
{ ALT: () => $.SUBRULE($.arrayCreationExplicitInitSuffix) }

@@ -577,12 +528,48 @@ ]);

$.RULE("templateArgument", () => {
$.OR([
{ ALT: () => $.SUBRULE($.template) },
{ ALT: () => $.CONSUME(t.StringLiteral) },
{ ALT: () => $.CONSUME(t.TextBlock) }
]);
});
$.RULE("template", () => {
$.OR([
{ ALT: () => $.SUBRULE($.stringTemplate) },
{ ALT: () => $.SUBRULE($.textBlockTemplate) }
]);
});
$.RULE("stringTemplate", () => {
$.CONSUME(t.StringTemplateBegin);
$.SUBRULE($.embeddedExpression);
$.MANY(() => {
$.CONSUME(t.StringTemplateMid);
$.SUBRULE1($.embeddedExpression);
});
$.CONSUME(t.StringTemplateEnd);
});
$.RULE("textBlockTemplate", () => {
$.CONSUME(t.TextBlockTemplateBegin);
$.SUBRULE($.embeddedExpression);
$.MANY(() => {
$.CONSUME(t.TextBlockTemplateMid);
$.SUBRULE1($.embeddedExpression);
});
$.CONSUME(t.TextBlockTemplateEnd);
});
$.RULE("embeddedExpression", () => {
$.OPTION(() => {
$.SUBRULE($.expression);
});
});
// https://docs.oracle.com/javase/specs/jls/se21/html/jls-14.html#jls-Pattern
$.RULE("pattern", () => {
$.OR([
{
GATE: () => this.BACKTRACK_LOOKAHEAD($.typePattern),
ALT: () => $.SUBRULE($.typePattern)
},
{
ALT: () => $.SUBRULE($.recordPattern)
}
{ ALT: () => $.SUBRULE($.typePattern) },
{ ALT: () => $.SUBRULE($.recordPattern) }
]);

@@ -632,87 +619,2 @@ });

// backtracking lookahead logic
$.RULE("identifyNewExpressionType", () => {
$.CONSUME(t.New);
const firstTokenAfterNew = this.LA(1).tokenType;
// not an array initialization due to the prefix "TypeArguments"
if (tokenMatcher(firstTokenAfterNew, t.Less)) {
return newExpressionTypes.unqualifiedClassInstanceCreationExpression;
}
try {
$.SUBRULE($.classOrInterfaceTypeToInstantiate);
} catch (e) {
// if it is not a "classOrInterfaceTypeToInstantiate" then
// (assuming a valid input) we are looking at an "arrayCreationExpression"
return newExpressionTypes.arrayCreationExpression;
}
const firstTokenAfterClassType = this.LA(1).tokenType;
if (tokenMatcher(firstTokenAfterClassType, t.LBrace)) {
return newExpressionTypes.unqualifiedClassInstanceCreationExpression;
}
// The LBrace above is mandatory in "classInstanceCreation..." so
// it must be an "arrayCreationExp" (if the input is valid)
// TODO: upgrade the logic to return "unknown" type if at this
// point it does not match "arrayCreation" either.
// - This will provide a better error message to the user
// in case of invalid inputs
return newExpressionTypes.arrayCreationExpression;
});
// Optimized backtracking, only scan ahead until the arrow("->").
$.RULE("isLambdaExpression", () => {
// TODO: this check of next two tokens is probably redundant as the normal lookahead should take care of this.
const firstTokenType = this.LA(1).tokenType;
const secondTokenType = this.LA(2).tokenType;
// no parent lambda "x -> x * 2"
if (
(tokenMatcher(firstTokenType, t.Identifier) ||
tokenMatcher(firstTokenType, t.Underscore)) &&
tokenMatcher(secondTokenType, t.Arrow)
) {
return true;
}
// Performance optimizations, fail fast if it is not a LBrace.
else if (tokenMatcher(firstTokenType, t.LBrace)) {
$.SUBRULE($.lambdaParametersWithBraces);
const followedByArrow = tokenMatcher(this.LA(1).tokenType, t.Arrow);
return followedByArrow;
}
return false;
});
$.RULE("isCastExpression", () => {
if (this.BACKTRACK_LOOKAHEAD($.isPrimitiveCastExpression)) {
return true;
}
return this.BACKTRACK_LOOKAHEAD($.isReferenceTypeCastExpression);
});
$.RULE("isPrimitiveCastExpression", () => {
$.CONSUME(t.LBrace);
$.SUBRULE($.primitiveType);
// No dims so this is not a reference Type
$.CONSUME(t.RBrace);
return true;
});
$.RULE("isReferenceTypeCastExpression", () => {
$.CONSUME(t.LBrace);
$.SUBRULE($.referenceType);
$.MANY(() => {
$.SUBRULE($.additionalBound);
});
$.CONSUME(t.RBrace);
const firstTokTypeAfterRBrace = this.LA(1).tokenType;
return (
this.firstForUnaryExpressionNotPlusMinus.find(tokType =>
tokenMatcher(firstTokTypeAfterRBrace, tokType)
) !== undefined
);
});
$.RULE("isRefTypeInMethodRef", () => {

@@ -752,3 +654,3 @@ let result = undefined;

function computeFirstForUnaryExpressionNotPlusMinus() {
export function computeFirstForUnaryExpressionNotPlusMinus() {
const firstUnaryExpressionNotPlusMinus = this.computeContentAssist(

@@ -764,6 +666,1 @@ "unaryExpressionNotPlusMinus",

}
module.exports = {
defineRules,
computeFirstForUnaryExpressionNotPlusMinus
};

274

src/productions/interfaces.js

@@ -1,13 +0,9 @@

"use strict";
const { tokenMatcher } = require("chevrotain");
import { tokenMatcher } from "chevrotain";
function defineRules($, t) {
export function defineRules($, t) {
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-9.html#jls-InterfaceDeclaration
$.RULE("interfaceDeclaration", () => {
// Spec Deviation: extracted the common "interfaceModifier" prefix to avoid backtracking.
$.MANY({
DEF: () => {
$.SUBRULE($.interfaceModifier);
},
MAX_LOOKAHEAD: 2
$.MANY(() => {
$.SUBRULE($.interfaceModifier);
});

@@ -78,39 +74,10 @@

const InterfaceBodyTypes = {
unknown: 0,
constantDeclaration: 1,
interfaceMethodDeclaration: 2,
classDeclaration: 3,
interfaceDeclaration: 4,
semiColon: 5
};
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-9.html#jls-InterfaceMemberDeclaration
$.RULE("interfaceMemberDeclaration", () => {
const detectedType = this.BACKTRACK_LOOKAHEAD(
$.identifyInterfaceBodyDeclarationType
);
$.OR([
{
GATE: () => detectedType === InterfaceBodyTypes.constantDeclaration,
ALT: () => $.SUBRULE($.constantDeclaration)
},
{
GATE: () =>
detectedType === InterfaceBodyTypes.interfaceMethodDeclaration,
ALT: () => $.SUBRULE($.interfaceMethodDeclaration)
},
{
GATE: () => detectedType === InterfaceBodyTypes.classDeclaration,
ALT: () => $.SUBRULE($.classDeclaration)
},
{
GATE: () => detectedType === InterfaceBodyTypes.interfaceDeclaration,
ALT: () => $.SUBRULE($.interfaceDeclaration)
},
{
// No GATE is needed as this is LL(1)
ALT: () => $.CONSUME(t.Semicolon)
}
{ ALT: () => $.SUBRULE($.constantDeclaration) },
{ ALT: () => $.SUBRULE($.interfaceMethodDeclaration) },
{ ALT: () => $.SUBRULE($.classDeclaration) },
{ ALT: () => $.SUBRULE($.interfaceDeclaration) },
{ ALT: () => $.CONSUME(t.Semicolon) }
]);

@@ -179,39 +146,10 @@ });

const AnnotationBodyTypes = {
unknown: 0,
annotationTypeElementDeclaration: 2,
constantDeclaration: 1,
classDeclaration: 3,
interfaceDeclaration: 4,
semiColon: 5
};
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-9.html#jls-InterfaceMemberDeclaration
$.RULE("annotationTypeMemberDeclaration", () => {
const detectedType = this.BACKTRACK_LOOKAHEAD(
$.identifyAnnotationBodyDeclarationType
);
$.OR([
{
GATE: () =>
detectedType === AnnotationBodyTypes.annotationTypeElementDeclaration,
ALT: () => $.SUBRULE($.annotationTypeElementDeclaration)
},
{
GATE: () => detectedType === AnnotationBodyTypes.constantDeclaration,
ALT: () => $.SUBRULE($.constantDeclaration)
},
{
GATE: () => detectedType === AnnotationBodyTypes.classDeclaration,
ALT: () => $.SUBRULE($.classDeclaration)
},
{
GATE: () => detectedType === AnnotationBodyTypes.interfaceDeclaration,
ALT: () => $.SUBRULE($.interfaceDeclaration)
},
{
// No GATE is needed as this is LL(1)
ALT: () => $.CONSUME(t.Semicolon)
}
{ ALT: () => $.SUBRULE($.annotationTypeElementDeclaration) },
{ ALT: () => $.SUBRULE($.constantDeclaration) },
{ ALT: () => $.SUBRULE($.classDeclaration) },
{ ALT: () => $.SUBRULE($.interfaceDeclaration) },
{ ALT: () => $.CONSUME(t.Semicolon) }
]);

@@ -278,4 +216,3 @@ });

],
IGNORE_AMBIGUITIES: true,
MAX_LOOKAHEAD: 2
IGNORE_AMBIGUITIES: true
});

@@ -303,18 +240,8 @@ $.CONSUME(t.RBrace);

$.RULE("elementValue", () => {
const isSimpleElementValueAnnotation = this.BACKTRACK_LOOKAHEAD(
$.isSimpleElementValueAnnotation
);
$.OR([
// Spec Deviation: "conditionalExpression" replaced with "expression"
// Because we cannot differentiate between the two using fixed lookahead.
{
GATE: () => isSimpleElementValueAnnotation === false,
ALT: () => $.SUBRULE($.expression)
},
{ ALT: () => $.SUBRULE($.expression) },
{ ALT: () => $.SUBRULE($.elementValueArrayInitializer) },
{
GATE: () => isSimpleElementValueAnnotation === true,
ALT: () => $.SUBRULE($.annotation)
}
{ ALT: () => $.SUBRULE($.annotation) }
]);

@@ -346,169 +273,2 @@ });

});
// ------------------------------------
// Special optimized backtracking rules.
// ------------------------------------
$.RULE("identifyInterfaceBodyDeclarationType", () => {
let nextTokenType = this.LA(1).tokenType;
if (tokenMatcher(nextTokenType, t.Semicolon)) {
return InterfaceBodyTypes.semiColon;
}
// We have to look beyond the modifiers to distinguish between the declaration types.
$.MANY({
// To avoid ambiguity with @interface ("AnnotationTypeDeclaration" vs "Annotaion")
GATE: () =>
(tokenMatcher($.LA(1).tokenType, t.At) &&
tokenMatcher($.LA(2).tokenType, t.Interface)) === false,
DEF: () => {
// This alternation includes all possible modifiers for all types of "interfaceMemberDeclaration"
// Certain combinations are syntactically invalid, this is **not** checked here,
// Invalid combinations will cause a descriptive parsing error message to be
// Created inside the relevant parsing rules **after** this lookahead
// analysis.
$.OR([
{ ALT: () => $.SUBRULE($.annotation) },
{ ALT: () => $.CONSUME(t.Public) },
{ ALT: () => $.CONSUME(t.Protected) },
{ ALT: () => $.CONSUME(t.Private) },
{ ALT: () => $.CONSUME(t.Abstract) },
{ ALT: () => $.CONSUME(t.Static) },
{ ALT: () => $.CONSUME(t.Sealed) },
{ ALT: () => $.CONSUME(t.NonSealed) },
{ ALT: () => $.CONSUME(t.Strictfp) },
{ ALT: () => $.CONSUME(t.Final) },
{ ALT: () => $.CONSUME(t.Default) }
]);
}
});
nextTokenType = this.LA(1).tokenType;
if (
tokenMatcher(nextTokenType, t.Class) ||
tokenMatcher(nextTokenType, t.Enum) ||
tokenMatcher(nextTokenType, t.Record)
) {
return InterfaceBodyTypes.classDeclaration;
}
if (
tokenMatcher(nextTokenType, t.Interface) ||
tokenMatcher(nextTokenType, t.At)
) {
return InterfaceBodyTypes.interfaceDeclaration;
}
if (
tokenMatcher(nextTokenType, t.Void) ||
tokenMatcher(nextTokenType, t.Less)
) {
// method with result type "void"
return InterfaceBodyTypes.interfaceMethodDeclaration;
}
// Only constant or interfaceMethod declarations may be valid at this point.
// All other alternatives should have been attempted.
// **both** start with "unannType"
this.SUBRULE($.unannType);
const nextToken = this.LA(1);
const nextNextTokenType = this.LA(2).tokenType;
// "foo(..." --> look like method start
if (
tokenMatcher(nextToken, t.Identifier) &&
tokenMatcher(nextNextTokenType, t.LBrace)
) {
return InterfaceBodyTypes.interfaceMethodDeclaration;
}
// a valid constant
if (tokenMatcher(nextToken, t.Identifier)) {
return InterfaceBodyTypes.constantDeclaration;
}
return InterfaceBodyTypes.unknown;
});
$.RULE("identifyAnnotationBodyDeclarationType", () => {
let nextTokenType = this.LA(1).tokenType;
if (tokenMatcher(nextTokenType, t.Semicolon)) {
return AnnotationBodyTypes.semiColon;
}
// We have to look beyond the modifiers to distinguish between the declaration types.
$.MANY({
// To avoid ambiguity with @interface ("AnnotationTypeDeclaration" vs "Annotaion")
GATE: () =>
(tokenMatcher($.LA(1).tokenType, t.At) &&
tokenMatcher($.LA(2).tokenType, t.Interface)) === false,
DEF: () => {
// This alternation includes all possible modifiers for all types of "annotationTypeMemberDeclaration"
// Certain combinations are syntactically invalid, this is **not** checked here,
// Invalid combinations will cause a descriptive parsing error message to be
// Created inside the relevant parsing rules **after** this lookahead
// analysis.
$.OR([
{ ALT: () => $.SUBRULE($.annotation) },
{ ALT: () => $.CONSUME(t.Public) },
{ ALT: () => $.CONSUME(t.Protected) },
{ ALT: () => $.CONSUME(t.Private) },
{ ALT: () => $.CONSUME(t.Abstract) },
{ ALT: () => $.CONSUME(t.Static) },
{ ALT: () => $.CONSUME(t.Final) },
{ ALT: () => $.CONSUME(t.Strictfp) }
]);
}
});
nextTokenType = this.LA(1).tokenType;
if (
tokenMatcher(nextTokenType, t.Class) ||
tokenMatcher(nextTokenType, t.Enum)
) {
return AnnotationBodyTypes.classDeclaration;
}
if (
tokenMatcher(nextTokenType, t.Interface) ||
tokenMatcher(nextTokenType, t.At)
) {
return AnnotationBodyTypes.interfaceDeclaration;
}
// Only constant or annotationTypeElement declarations may be valid at this point.
// All other alternatives should have been attempted.
// **both** start with "unannType"
this.SUBRULE($.unannType);
nextTokenType = this.LA(1).tokenType;
const nextNextTokenType = this.LA(2).tokenType;
// "foo(..." --> look like annotationTypeElement start
if (
tokenMatcher(nextTokenType, t.Identifier) &&
tokenMatcher(nextNextTokenType, t.LBrace)
) {
return AnnotationBodyTypes.annotationTypeElementDeclaration;
}
// a valid constant
if (tokenMatcher(nextTokenType, t.Identifier)) {
return AnnotationBodyTypes.constantDeclaration;
}
return AnnotationBodyTypes.unknown;
});
$.RULE("isSimpleElementValueAnnotation", () => {
$.SUBRULE($.annotation);
const nextTokenType = this.LA(1).tokenType;
switch (nextTokenType) {
// annotation in "ElementValue" would be followed by one of those
// any other TokenType would indicate it is an annotation in a "referenceType"
// as part of a "methodReference" in "primary"
case t.Comma:
case t.Semicolon:
case t.RCurly:
case t.RBrace:
return true;
default:
return false;
}
});
}
module.exports = {
defineRules
};

7

src/productions/lexical-structure.js

@@ -1,3 +0,2 @@

"use strict";
function defineRules($, t) {
export function defineRules($, t) {
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-3.html#jls-Literal

@@ -39,5 +38,1 @@ $.RULE("literal", () => {

}
module.exports = {
defineRules
};

9

src/productions/names.js

@@ -1,4 +0,3 @@

"use strict";
const { tokenMatcher } = require("chevrotain");
function defineRules($, t) {
import { tokenMatcher } from "chevrotain";
export function defineRules($, t) {
// https://docs.oracle.com/javase/specs/jls/se16/html/jls-6.html#jls-ModuleName

@@ -83,5 +82,1 @@ $.RULE("moduleName", () => {

}
module.exports = {
defineRules
};

94

src/productions/packages-and-modules.js

@@ -1,6 +0,4 @@

"use strict";
const { isRecognitionException, tokenMatcher, EOF } = require("chevrotain");
const { classBodyTypes } = require("./utils/class-body-types");
import { tokenMatcher, EOF } from "chevrotain";
function defineRules($, t) {
export function defineRules($, t) {
/**

@@ -15,13 +13,5 @@ * Spec Deviation: As OrdinaryCompilationUnit and UnnamedClassCompilationUnit

$.RULE("compilationUnit", () => {
// custom optimized backtracking lookahead logic
const isModule = $.BACKTRACK_LOOKAHEAD($.isModuleCompilationUnit);
$.OR([
{
GATE: () => isModule === false,
ALT: () => $.SUBRULE($.ordinaryCompilationUnit)
},
{
ALT: () => $.SUBRULE($.modularCompilationUnit)
}
{ ALT: () => $.SUBRULE($.ordinaryCompilationUnit) },
{ ALT: () => $.SUBRULE($.modularCompilationUnit) }
]);

@@ -34,8 +24,3 @@ // https://github.com/jhipster/prettier-java/pull/217

$.RULE("ordinaryCompilationUnit", () => {
$.OPTION({
GATE: $.BACKTRACK($.packageDeclaration),
DEF: () => {
$.SUBRULE($.packageDeclaration);
}
});
$.OPTION(() => $.SUBRULE($.packageDeclaration));
$.MANY(() => {

@@ -120,24 +105,8 @@ $.SUBRULE3($.importDeclaration);

$.RULE("typeDeclaration", () => {
// TODO: consider extracting the prefix modifiers here to avoid backtracking
const nextRuleType = $.BACKTRACK_LOOKAHEAD(
$.identifyClassBodyDeclarationType
);
$.OR([
{ ALT: () => $.CONSUME(t.Semicolon) },
{
GATE: () => nextRuleType === classBodyTypes.classDeclaration,
ALT: () => $.SUBRULE($.classDeclaration)
},
{
GATE: () => nextRuleType === classBodyTypes.interfaceDeclaration,
ALT: () => $.SUBRULE($.interfaceDeclaration)
},
{
GATE: () => nextRuleType === classBodyTypes.fieldDeclaration,
ALT: () => $.SUBRULE($.fieldDeclaration)
},
{
ALT: () => $.SUBRULE($.methodDeclaration)
}
{ ALT: () => $.SUBRULE($.classDeclaration) },
{ ALT: () => $.SUBRULE($.interfaceDeclaration) },
{ ALT: () => $.SUBRULE($.fieldDeclaration) },
{ ALT: () => $.SUBRULE($.methodDeclaration) }
]);

@@ -261,47 +230,2 @@ });

});
$.RULE("isModuleCompilationUnit", () => {
$.OPTION(() => {
$.SUBRULE($.packageDeclaration);
// TODO: this return must be outside the OPTION at the top level rule
// a Java Module source code may not contain a package declaration.
return false;
});
try {
// the "{importDeclaration}" is a common prefix
$.MANY(() => {
$.SUBRULE2($.importDeclaration);
});
$.MANY2({
// To avoid ambiguity with @interface ("AnnotationTypeDeclaration" vs "Annotaion")
GATE: () =>
(tokenMatcher($.LA(1).tokenType, t.At) &&
tokenMatcher($.LA(2).tokenType, t.Interface)) === false,
DEF: () => {
$.SUBRULE($.annotation);
}
});
} catch (e) {
// This means we had a syntax error in the imports or annotations
// So we can't keep parsing deep enough to make the decision
if (isRecognitionException(e)) {
// TODO: add original syntax error?
throw "Cannot Identify if the source code is an OrdinaryCompilationUnit or ModularCompilationUnit";
} else {
throw e;
}
}
const nextTokenType = this.LA(1).tokenType;
return (
tokenMatcher(nextTokenType, t.Open) ||
tokenMatcher(nextTokenType, t.Module)
);
});
}
module.exports = {
defineRules
};

25

src/productions/types-values-and-variables.js

@@ -1,6 +0,2 @@

"use strict";
const { tokenMatcher } = require("chevrotain");
function defineRules($, t) {
export function defineRules($, t) {
// ---------------------

@@ -107,11 +103,3 @@ // Productions from §4 (Types, Values, and Variables)

$.CONSUME2(t.Identifier);
$.OPTION2({
// To avoid confusion with "TypeArgumentsOrDiamond" rule
// as we use the "classType" rule in the "identifyNewExpressionType"
// optimized lookahead rule.
GATE: () => tokenMatcher($.LA(2).tokenType, t.Greater) === false,
DEF: () => {
$.SUBRULE2($.typeArguments);
}
});
$.OPTION2(() => $.SUBRULE2($.typeArguments));
});

@@ -205,6 +193,3 @@ });

$.OR([
{
GATE: $.BACKTRACK($.referenceType),
ALT: () => $.SUBRULE($.referenceType)
},
{ ALT: () => $.SUBRULE($.referenceType) },
{ ALT: () => $.SUBRULE($.wildcard) }

@@ -235,5 +220,1 @@ ]);

}
module.exports = {
defineRules
};

106

src/tokens.js

@@ -1,15 +0,7 @@

"use strict";
const { createToken: createTokenOrg, Lexer } = require("chevrotain");
const camelCase = require("lodash/camelCase");
import { createToken as createTokenOrg, Lexer } from "chevrotain";
import camelCase from "lodash/camelCase.js";
import * as chars from "./unicodesets.js";
let chars;
// A little mini DSL for easier lexer definition.
const fragments = {};
try {
chars = require("./unicodesets");
} catch (e) {
throw Error(
"unicodesets.js file could not be found. Did you try to run the command: yarn run build ?"
);
}

@@ -56,4 +48,8 @@ function inlineFragments(def) {

"StringCharacter",
"(?:(?:{{EscapeSequence}})|{{UnicodeInputCharacter}})"
'(?:(?:{{EscapeSequence}})|{{UnicodeEscape}}|(?!["\\\\]).)'
);
FRAGMENT(
"TextBlockCharacter",
"(?:(?:{{EscapeSequence}})|{{UnicodeEscape}}|(?!\\\\).|\\\\?{{LineTerminator}})"
);

@@ -105,6 +101,14 @@ function matchJavaIdentifier(text, startOffset) {

const allTokens = [];
const allTokens = {
modes: {
global: [],
stringTemplate: [],
textBlockTemplate: []
},
defaultMode: "global"
};
const allModes = Object.keys(allTokens.modes);
const tokenDictionary = {};
function createToken(options) {
function createToken(options, modes = allModes) {
// TODO create a test to check all the tokenbs have a label defined

@@ -123,3 +127,3 @@ if (!options.label) {

const newTokenType = createTokenOrg(options);
allTokens.push(newTokenType);
modes.forEach(mode => allTokens.modes[mode].push(newTokenType));
tokenDictionary[options.name] = newTokenType;

@@ -235,10 +239,58 @@ return newTokenType;

name: "TextBlock",
pattern: /"""\s*\n(\\"|\s|.)*?"""/
pattern: MAKE_PATTERN(
'"""[\\x09\\x20\\x0C]*{{LineTerminator}}{{TextBlockCharacter}}*?"""'
)
});
createToken({
name: "TextBlockTemplateBegin",
pattern: MAKE_PATTERN('"""{{LineTerminator}}{{TextBlockCharacter}}*?\\\\\\{'),
push_mode: "textBlockTemplate"
});
createToken(
{
name: "TextBlockTemplateEnd",
pattern: MAKE_PATTERN('\\}{{TextBlockCharacter}}*?"""'),
pop_mode: true
},
["textBlockTemplate"]
);
createToken({
name: "StringLiteral",
pattern: MAKE_PATTERN('"(?:[^\\\\"]|{{StringCharacter}})*"')
pattern: MAKE_PATTERN('"{{StringCharacter}}*?"')
});
createToken({
name: "StringTemplateBegin",
pattern: MAKE_PATTERN('"{{StringCharacter}}*?\\\\\\{'),
push_mode: "stringTemplate"
});
createToken(
{
name: "StringTemplateEnd",
pattern: MAKE_PATTERN('\\}{{StringCharacter}}*?"'),
pop_mode: true
},
["stringTemplate"]
);
createToken(
{
name: "StringTemplateMid",
pattern: MAKE_PATTERN("\\}{{StringCharacter}}*?\\\\\\{")
},
["stringTemplate"]
);
createToken(
{
name: "TextBlockTemplateMid",
pattern: MAKE_PATTERN("\\}{{TextBlockCharacter}}*?\\\\\\{")
},
["textBlockTemplate"]
);
// https://docs.oracle.com/javase/specs/jls/se21/html/jls-3.html#jls-3.9

@@ -391,4 +443,12 @@ // TODO: how to handle the special rule (see spec above) for "requires" and "transitive"

createToken({ name: "RBrace", pattern: ")", categories: [Separators] });
createToken({ name: "LCurly", pattern: "{", categories: [Separators] });
createToken({ name: "RCurly", pattern: "}", categories: [Separators] });
createToken({
name: "LCurly",
pattern: "{",
categories: [Separators],
push_mode: allTokens.defaultMode
});
createToken(
{ name: "RCurly", pattern: "}", categories: [Separators], pop_mode: true },
[allTokens.defaultMode]
);
createToken({ name: "LSquare", pattern: "[", categories: [Separators] });

@@ -530,3 +590,3 @@ createToken({ name: "RSquare", pattern: "]", categories: [Separators] });

// See: https://github.com/SAP/chevrotain/blob/master/examples/lexer/keywords_vs_identifiers/keywords_vs_identifiers.js
allTokens.push(Identifier);
allModes.forEach(mode => allTokens.modes[mode].push(Identifier));
tokenDictionary["Identifier"] = Identifier;

@@ -540,5 +600,3 @@

}
module.exports = {
allTokens,
tokens: tokenDictionary
};
export { allTokens, tokenDictionary as tokens };

6

src/unicodesets.js

@@ -11,3 +11,2 @@ /*File generated with ../scripts/unicode.js using ../resources/Unicode/UnicodeData.txt.

*/
"use strict";
const addRanges = (set, rangesArr) => {

@@ -1003,5 +1002,2 @@ for (let i = 0; i < rangesArr.length; i++) {

);
module.exports = {
firstIdentChar: fic,
restIdentChar: ric
};
export { fic as firstIdentChar, ric as restIdentChar };

8

src/utils.js

@@ -1,3 +0,1 @@

"use strict";
/**

@@ -11,3 +9,3 @@ * Should Parser / Lexer Validations be skipped?

*/
function getSkipValidations() {
export function getSkipValidations() {
return (

@@ -19,5 +17,1 @@ (typeof process !== "undefined" && // (not every runtime has a global `process` object

}
module.exports = {
getSkipValidations
};
src/productions/utils/class-body-types.js
api.d.ts

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