chore(web): add and apply eslint formatting

This commit is contained in:
Amaan Qureshi 2024-02-07 11:32:27 -05:00
parent 5f63074057
commit 96a440af35
11 changed files with 622 additions and 569 deletions

View file

@ -0,0 +1,22 @@
module.exports = {
'env': {
'commonjs': true,
'es2021': true,
},
'extends': 'google',
'overrides': [
],
'parserOptions': {
'ecmaVersion': 'latest',
'sourceType': 'module',
},
'rules': {
'indent': ['error', 2, {'SwitchCase': 1}],
'max-len': [
'error',
{'code': 120, 'ignoreComments': true, 'ignoreUrls': true, 'ignoreStrings': true, 'ignoreTemplateLiterals': true},
],
'require-jsdoc': 0,
'new-cap': 0,
},
};

View file

@ -13,12 +13,14 @@ const PREDICATE_STEP_TYPE_STRING = 2;
const LANGUAGE_FUNCTION_REGEX = /^_?tree_sitter_\w+/;
var VERSION;
var MIN_COMPATIBLE_VERSION;
var TRANSFER_BUFFER;
var currentParseCallback;
var currentLogCallback;
let VERSION;
let MIN_COMPATIBLE_VERSION;
let TRANSFER_BUFFER;
let currentParseCallback;
// eslint-disable-next-line no-unused-vars
let currentLogCallback;
// eslint-disable-next-line no-unused-vars
class ParserImpl {
static init() {
TRANSFER_BUFFER = C._ts_init();
@ -50,7 +52,7 @@ class ParserImpl {
if (version < MIN_COMPATIBLE_VERSION || VERSION < version) {
throw new Error(
`Incompatible language version ${version}. ` +
`Compatibility range ${MIN_COMPATIBLE_VERSION} through ${VERSION}.`
`Compatibility range ${MIN_COMPATIBLE_VERSION} through ${VERSION}.`,
);
}
} else {
@ -62,7 +64,7 @@ class ParserImpl {
}
getLanguage() {
return this.language
return this.language;
}
parse(callback, oldTree, options) {
@ -71,7 +73,7 @@ class ParserImpl {
} else if (typeof callback === 'function') {
currentParseCallback = callback;
} else {
throw new Error("Argument must be a string or a function");
throw new Error('Argument must be a string or a function');
}
if (this.logCallback) {
@ -99,7 +101,7 @@ class ParserImpl {
this[1],
oldTree ? oldTree[0] : 0,
rangeAddress,
rangeCount
rangeCount,
);
if (!treeAddress) {
@ -129,8 +131,8 @@ class ParserImpl {
setLogger(callback) {
if (!callback) {
callback = null;
} else if (typeof callback !== "function") {
throw new Error("Logger callback must be a function");
} else if (typeof callback !== 'function') {
throw new Error('Logger callback must be a function');
}
this.logCallback = callback;
return this;
@ -403,7 +405,7 @@ class Node {
startPosition.row,
startPosition.column,
endPosition.row,
endPosition.column
endPosition.column,
);
// Instantiate the nodes based on the data returned.
@ -460,7 +462,7 @@ class Node {
}
marshalNode(this);
let address = TRANSFER_BUFFER + SIZE_OF_NODE;
const address = TRANSFER_BUFFER + SIZE_OF_NODE;
setValue(address, start, 'i32');
setValue(address + SIZE_OF_INT, end, 'i32');
C._ts_node_descendant_for_index_wasm(this.tree[0]);
@ -473,7 +475,7 @@ class Node {
}
marshalNode(this);
let address = TRANSFER_BUFFER + SIZE_OF_NODE;
const address = TRANSFER_BUFFER + SIZE_OF_NODE;
setValue(address, start, 'i32');
setValue(address + SIZE_OF_INT, end, 'i32');
C._ts_node_named_descendant_for_index_wasm(this.tree[0]);
@ -486,7 +488,7 @@ class Node {
}
marshalNode(this);
let address = TRANSFER_BUFFER + SIZE_OF_NODE;
const address = TRANSFER_BUFFER + SIZE_OF_NODE;
marshalPoint(address, start);
marshalPoint(address + SIZE_OF_POINT, end);
C._ts_node_descendant_for_position_wasm(this.tree[0]);
@ -499,7 +501,7 @@ class Node {
}
marshalNode(this);
let address = TRANSFER_BUFFER + SIZE_OF_NODE;
const address = TRANSFER_BUFFER + SIZE_OF_NODE;
marshalPoint(address, start);
marshalPoint(address + SIZE_OF_POINT, end);
C._ts_node_named_descendant_for_position_wasm(this.tree[0]);
@ -747,7 +749,7 @@ class Language {
sourceAddress,
sourceLength,
TRANSFER_BUFFER,
TRANSFER_BUFFER + SIZE_OF_INT
TRANSFER_BUFFER + SIZE_OF_INT,
);
if (!address) {
@ -769,11 +771,11 @@ class Language {
break;
case 5:
error = new TypeError(`Bad pattern structure at offset ${errorIndex}: '${suffix}'...`);
word = "";
word = '';
break;
default:
error = new SyntaxError(`Bad syntax at offset ${errorIndex}: '${suffix}'...`);
word = "";
word = '';
break;
}
error.index = errorIndex;
@ -792,7 +794,7 @@ class Language {
const nameAddress = C._ts_query_capture_name_for_id(
address,
i,
TRANSFER_BUFFER
TRANSFER_BUFFER,
);
const nameLength = getValue(TRANSFER_BUFFER, 'i32');
captureNames[i] = UTF8ToString(nameAddress, nameLength);
@ -802,7 +804,7 @@ class Language {
const valueAddress = C._ts_query_string_value_for_id(
address,
i,
TRANSFER_BUFFER
TRANSFER_BUFFER,
);
const nameLength = getValue(TRANSFER_BUFFER, 'i32');
stringValues[i] = UTF8ToString(valueAddress, nameLength);
@ -817,7 +819,7 @@ class Language {
const predicatesAddress = C._ts_query_predicates_for_pattern(
address,
i,
TRANSFER_BUFFER
TRANSFER_BUFFER,
);
const stepCount = getValue(TRANSFER_BUFFER, 'i32');
@ -849,103 +851,121 @@ class Language {
isPositive = false;
case 'any-eq?':
case 'eq?':
if (steps.length !== 3) throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected 2, got ${steps.length - 1}`
);
if (steps[1].type !== 'capture') throw new Error(
`First argument of \`#${operator}\` predicate must be a capture. Got "${steps[1].value}"`
);
if (steps.length !== 3) {
throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected 2, got ${steps.length - 1}`,
);
}
if (steps[1].type !== 'capture') {
throw new Error(
`First argument of \`#${operator}\` predicate must be a capture. Got "${steps[1].value}"`,
);
}
matchAll = !operator.startsWith('any-');
if (steps[2].type === 'capture') {
const captureName1 = steps[1].name;
const captureName2 = steps[2].name;
textPredicates[i].push(function (captures) {
let nodes_1 = [];
let nodes_2 = [];
textPredicates[i].push(function(captures) {
const nodes1 = [];
const nodes2 = [];
for (const c of captures) {
if (c.name === captureName1) nodes_1.push(c.node);
if (c.name === captureName2) nodes_2.push(c.node);
if (c.name === captureName1) nodes1.push(c.node);
if (c.name === captureName2) nodes2.push(c.node);
}
let compare = (n1, n2, positive) => {
const compare = (n1, n2, positive) => {
return positive ?
n1.text === n2.text :
n1.text !== n2.text;
};
return matchAll
? nodes_1.every(n1 => nodes_2.some(n2 => compare(n1, n2, isPositive)))
: nodes_1.some(n1 => nodes_2.some(n2 => compare(n1, n2, isPositive)));
return matchAll ?
nodes1.every((n1) => nodes2.some((n2) => compare(n1, n2, isPositive))) :
nodes1.some((n1) => nodes2.some((n2) => compare(n1, n2, isPositive)));
});
} else {
captureName = steps[1].name;
const stringValue = steps[2].value;
let matches = (n) => n.text === stringValue;
let doesNotMatch = (n) => n.text !== stringValue;
textPredicates[i].push(function (captures) {
let nodes = [];
const matches = (n) => n.text === stringValue;
const doesNotMatch = (n) => n.text !== stringValue;
textPredicates[i].push(function(captures) {
const nodes = [];
for (const c of captures) {
if (c.name === captureName) nodes.push(c.node);
}
let test = isPositive ? matches : doesNotMatch;
return matchAll
? nodes.every(test)
: nodes.some(test);
const test = isPositive ? matches : doesNotMatch;
return matchAll ?
nodes.every(test) :
nodes.some(test);
});
}
break;
case "any-not-match?":
case "not-match?":
isPositive = false;
case "any-match?":
case "match?":
if (steps.length !== 3) throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected 2, got ${steps.length - 1}.`
);
if (steps[1].type !== 'capture') throw new Error(
`First argument of \`#${operator}\` predicate must be a capture. Got "${steps[1].value}".`
);
if (steps[2].type !== 'string') throw new Error(
`Second argument of \`#${operator}\` predicate must be a string. Got @${steps[2].value}.`
);
case 'any-not-match?':
case 'not-match?':
isPositive = false;
case 'any-match?':
case 'match?':
if (steps.length !== 3) {
throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected 2, got ${steps.length - 1}.`,
);
}
if (steps[1].type !== 'capture') {
throw new Error(
`First argument of \`#${operator}\` predicate must be a capture. Got "${steps[1].value}".`,
);
}
if (steps[2].type !== 'string') {
throw new Error(
`Second argument of \`#${operator}\` predicate must be a string. Got @${steps[2].value}.`,
);
}
captureName = steps[1].name;
const regex = new RegExp(steps[2].value);
matchAll = !operator.startsWith('any-');
textPredicates[i].push(function (captures) {
textPredicates[i].push(function(captures) {
const nodes = [];
for (const c of captures) {
if (c.name === captureName) nodes.push(c.node.text);
}
let test = (text, positive) => {
const test = (text, positive) => {
return positive ?
regex.test(text) :
!regex.test(text);
};
if (nodes.length === 0) return !isPositive;
return matchAll
? nodes.every(text => test(text, isPositive))
: nodes.some(text => test(text, isPositive))
return matchAll ?
nodes.every((text) => test(text, isPositive)) :
nodes.some((text) => test(text, isPositive));
});
break;
case 'set!':
if (steps.length < 2 || steps.length > 3) throw new Error(
`Wrong number of arguments to \`#set!\` predicate. Expected 1 or 2. Got ${steps.length - 1}.`
);
if (steps.some(s => s.type !== 'string')) throw new Error(
`Arguments to \`#set!\` predicate must be a strings.".`
);
if (steps.length < 2 || steps.length > 3) {
throw new Error(
`Wrong number of arguments to \`#set!\` predicate. Expected 1 or 2. Got ${steps.length - 1}.`,
);
}
if (steps.some((s) => s.type !== 'string')) {
throw new Error(
`Arguments to \`#set!\` predicate must be a strings.".`,
);
}
if (!setProperties[i]) setProperties[i] = {};
setProperties[i][steps[1].value] = steps[2] ? steps[2].value : null;
break;
case 'is?':
case 'is-not?':
if (steps.length < 2 || steps.length > 3) throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected 1 or 2. Got ${steps.length - 1}.`
);
if (steps.some(s => s.type !== 'string')) throw new Error(
`Arguments to \`#${operator}\` predicate must be a strings.".`
);
if (steps.length < 2 || steps.length > 3) {
throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected 1 or 2. Got ${steps.length - 1}.`,
);
}
if (steps.some((s) => s.type !== 'string')) {
throw new Error(
`Arguments to \`#${operator}\` predicate must be a strings.".`,
);
}
const properties = operator === 'is?' ? assertedProperties : refutedProperties;
if (!properties[i]) properties[i] = {};
properties[i][steps[1].value] = steps[2] ? steps[2].value : null;
@ -954,26 +974,32 @@ class Language {
case 'not-any-of?':
isPositive = false;
case 'any-of?':
if (steps.length < 2) throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected at least 1. Got ${steps.length - 1}.`
);
if (steps[1].type !== 'capture') throw new Error(
`First argument of \`#${operator}\` predicate must be a capture. Got "${steps[1].value}".`
);
for (let i = 2; i < steps.length; i++) {
if (steps[i].type !== 'string') throw new Error(
`Arguments to \`#${operator}\` predicate must be a strings.".`
if (steps.length < 2) {
throw new Error(
`Wrong number of arguments to \`#${operator}\` predicate. Expected at least 1. Got ${steps.length - 1}.`,
);
}
if (steps[1].type !== 'capture') {
throw new Error(
`First argument of \`#${operator}\` predicate must be a capture. Got "${steps[1].value}".`,
);
}
for (let i = 2; i < steps.length; i++) {
if (steps[i].type !== 'string') {
throw new Error(
`Arguments to \`#${operator}\` predicate must be a strings.".`,
);
}
}
captureName = steps[1].name;
const values = steps.slice(2).map(s => s.value);
textPredicates[i].push(function (captures) {
const values = steps.slice(2).map((s) => s.value);
textPredicates[i].push(function(captures) {
const nodes = [];
for (const c of captures) {
if (c.name === captureName) nodes.push(c.node.text);
}
if (nodes.length === 0) return !isPositive;
return nodes.every(text => values.includes(text)) === isPositive;
return nodes.every((text) => values.includes(text)) === isPositive;
});
break;
@ -999,7 +1025,7 @@ class Language {
predicates,
Object.freeze(setProperties),
Object.freeze(assertedProperties),
Object.freeze(refutedProperties)
Object.freeze(refutedProperties),
);
}
@ -1018,28 +1044,28 @@ class Language {
bytes = Promise.resolve(fs.readFileSync(url));
} else {
bytes = fetch(url)
.then(response => response.arrayBuffer()
.then(buffer => {
.then((response) => response.arrayBuffer()
.then((buffer) => {
if (response.ok) {
return new Uint8Array(buffer);
} else {
const body = new TextDecoder('utf-8').decode(buffer);
throw new Error(`Language.load failed with status ${response.status}.\n\n${body}`)
throw new Error(`Language.load failed with status ${response.status}.\n\n${body}`);
}
}));
}
}
return bytes
.then(bytes => loadWebAssemblyModule(bytes, {loadAsync: true}))
.then(mod => {
const symbolNames = Object.keys(mod)
const functionName = symbolNames.find(key =>
.then((bytes) => loadWebAssemblyModule(bytes, {loadAsync: true}))
.then((mod) => {
const symbolNames = Object.keys(mod);
const functionName = symbolNames.find((key) =>
LANGUAGE_FUNCTION_REGEX.test(key) &&
!key.includes("external_scanner_")
!key.includes('external_scanner_'),
);
if (!functionName) {
console.log(`Couldn't find language function in WASM file. Symbols:\n${JSON.stringify(symbolNames, null, 2)}`)
console.log(`Couldn't find language function in WASM file. Symbols:\n${JSON.stringify(symbolNames, null, 2)}`);
}
const languageAddress = mod[functionName]();
return new Language(INTERNAL, languageAddress);
@ -1059,7 +1085,7 @@ class LookaheadIterable {
}
get currentType() {
return this.language.types[this.currentTypeId] || 'ERROR'
return this.language.types[this.currentTypeId] || 'ERROR';
}
delete() {
@ -1085,11 +1111,11 @@ class LookaheadIterable {
return {
next() {
if (C._ts_lookahead_iterator_next(self[0])) {
return { done: false, value: self.currentType };
return {done: false, value: self.currentType};
}
return { done: true, value: "" };
}
return {done: true, value: ''};
},
};
}
}
@ -1097,7 +1123,7 @@ class LookaheadIterable {
class Query {
constructor(
internal, address, captureNames, textPredicates, predicates,
setProperties, assertedProperties, refutedProperties
setProperties, assertedProperties, refutedProperties,
) {
assertInternal(internal);
this[0] = address;
@ -1136,7 +1162,7 @@ class Query {
startPosition.column,
endPosition.row,
endPosition.column,
matchLimit
matchLimit,
);
const rawCount = getValue(TRANSFER_BUFFER, 'i32');
@ -1155,7 +1181,7 @@ class Query {
const captures = new Array(captureCount);
address = unmarshalCaptures(this, node.tree, address, captures);
if (this.textPredicates[pattern].every(p => p(captures))) {
if (this.textPredicates[pattern].every((p) => p(captures))) {
result[filteredCount++] = {pattern, captures};
const setProperties = this.setProperties[pattern];
if (setProperties) result[i].setProperties = setProperties;
@ -1192,7 +1218,7 @@ class Query {
startPosition.column,
endPosition.row,
endPosition.column,
matchLimit
matchLimit,
);
const count = getValue(TRANSFER_BUFFER, 'i32');
@ -1211,10 +1237,10 @@ class Query {
const captureIndex = getValue(address, 'i32');
address += SIZE_OF_INT;
captures.length = captureCount
captures.length = captureCount;
address = unmarshalCaptures(this, node.tree, address, captures);
if (this.textPredicates[pattern].every(p => p(captures))) {
if (this.textPredicates[pattern].every((p) => p(captures))) {
const capture = captures[captureIndex];
const setProperties = this.setProperties[pattern];
if (setProperties) capture.setProperties = setProperties;
@ -1231,7 +1257,7 @@ class Query {
}
predicatesForPattern(patternIndex) {
return this.predicates[patternIndex]
return this.predicates[patternIndex];
}
didExceedMatchLimit() {
@ -1270,7 +1296,7 @@ function unmarshalCaptures(query, tree, address, result) {
}
function assertInternal(x) {
if (x !== INTERNAL) throw new Error('Illegal constructor')
if (x !== INTERNAL) throw new Error('Illegal constructor');
}
function isPoint(point) {
@ -1319,25 +1345,25 @@ function unmarshalNode(tree, address = TRANSFER_BUFFER) {
function marshalTreeCursor(cursor, address = TRANSFER_BUFFER) {
setValue(address + 0 * SIZE_OF_INT, cursor[0], 'i32'),
setValue(address + 1 * SIZE_OF_INT, cursor[1], 'i32'),
setValue(address + 2 * SIZE_OF_INT, cursor[2], 'i32')
setValue(address + 2 * SIZE_OF_INT, cursor[2], 'i32');
}
function unmarshalTreeCursor(cursor) {
cursor[0] = getValue(TRANSFER_BUFFER + 0 * SIZE_OF_INT, 'i32'),
cursor[1] = getValue(TRANSFER_BUFFER + 1 * SIZE_OF_INT, 'i32'),
cursor[2] = getValue(TRANSFER_BUFFER + 2 * SIZE_OF_INT, 'i32')
cursor[2] = getValue(TRANSFER_BUFFER + 2 * SIZE_OF_INT, 'i32');
}
function marshalPoint(address, point) {
setValue(address, point.row, 'i32')
setValue(address + SIZE_OF_INT, point.column, 'i32')
setValue(address, point.row, 'i32');
setValue(address + SIZE_OF_INT, point.column, 'i32');
}
function unmarshalPoint(address) {
return {
row: getValue(address, 'i32'),
column: getValue(address + SIZE_OF_INT, 'i32')
}
column: getValue(address + SIZE_OF_INT, 'i32'),
};
}
function marshalRange(address, range) {

View file

@ -1,19 +1,19 @@
#!/usr/bin/env node
const fs = require("fs");
const path = require("path");
const fs = require('fs');
const path = require('path');
const inputFiles = [
"binding.c",
"binding.js",
"exports.txt",
"imports.js",
"prefix.js",
...list("../include/tree_sitter"),
...list("../src"),
'binding.c',
'binding.js',
'exports.txt',
'imports.js',
'prefix.js',
...list('../include/tree_sitter'),
...list('../src'),
];
const outputFiles = ["tree-sitter.js", "tree-sitter.wasm"];
const outputFiles = ['tree-sitter.js', 'tree-sitter.wasm'];
const outputMtime = Math.min(...outputFiles.map(mtime));
@ -26,8 +26,8 @@ for (const inputFile of inputFiles) {
function list(dir) {
return fs
.readdirSync(path.join(__dirname, dir), "utf8")
.filter((p) => !p.startsWith("."))
.readdirSync(path.join(__dirname, dir), 'utf8')
.filter((p) => !p.startsWith('.'))
.map((p) => path.join(dir, p));
}

View file

@ -4,10 +4,10 @@ mergeInto(LibraryManager.library, {
index,
row,
column,
lengthAddress
lengthAddress,
) {
var INPUT_BUFFER_SIZE = 10 * 1024;
var string = currentParseCallback(index, {row: row, column: column});
const INPUT_BUFFER_SIZE = 10 * 1024;
const string = currentParseCallback(index, {row: row, column: column});
if (typeof string === 'string') {
setValue(lengthAddress, string.length, 'i32');
stringToUTF16(string, inputBufferAddress, INPUT_BUFFER_SIZE);
@ -21,5 +21,5 @@ mergeInto(LibraryManager.library, {
const message = UTF8ToString(messageAddress);
currentLogCallback(message, isLexMessage !== 0);
}
}
},
});

View file

@ -28,6 +28,8 @@
"homepage": "https://github.com/tree-sitter/tree-sitter/tree/master/lib/binding_web",
"devDependencies": {
"chai": "^4.3.7",
"eslint": ">=8.56.0",
"eslint-config-google": "^0.14.0",
"mocha": "^10.2.0",
"terser": "^5.16.6"
}

View file

@ -20,4 +20,4 @@
if (typeof exports === 'object') {
module.exports = TreeSitter;
}
}

View file

@ -1,56 +1,56 @@
const { assert } = require("chai");
const {assert} = require('chai');
let JavaScript;
describe("Language", () => {
before(async () => ({ JavaScript } = await require("./helper")));
describe('Language', () => {
before(async () => ({JavaScript} = await require('./helper')));
describe(".fieldIdForName, .fieldNameForId", () => {
it("converts between the string and integer representations of fields", () => {
const nameId = JavaScript.fieldIdForName("name");
const bodyId = JavaScript.fieldIdForName("body");
describe('.fieldIdForName, .fieldNameForId', () => {
it('converts between the string and integer representations of fields', () => {
const nameId = JavaScript.fieldIdForName('name');
const bodyId = JavaScript.fieldIdForName('body');
assert.isBelow(nameId, JavaScript.fieldCount);
assert.isBelow(bodyId, JavaScript.fieldCount);
assert.equal("name", JavaScript.fieldNameForId(nameId));
assert.equal("body", JavaScript.fieldNameForId(bodyId));
assert.equal('name', JavaScript.fieldNameForId(nameId));
assert.equal('body', JavaScript.fieldNameForId(bodyId));
});
it("handles invalid inputs", () => {
assert.equal(null, JavaScript.fieldIdForName("namezzz"));
it('handles invalid inputs', () => {
assert.equal(null, JavaScript.fieldIdForName('namezzz'));
assert.equal(null, JavaScript.fieldNameForId(-1));
assert.equal(null, JavaScript.fieldNameForId(10000));
});
});
describe(".idForNodeType, .nodeTypeForId, .nodeTypeIsNamed", () => {
it("converts between the string and integer representations of a node type", () => {
const exportStatementId = JavaScript.idForNodeType("export_statement", true);
const starId = JavaScript.idForNodeType("*", false);
describe('.idForNodeType, .nodeTypeForId, .nodeTypeIsNamed', () => {
it('converts between the string and integer representations of a node type', () => {
const exportStatementId = JavaScript.idForNodeType('export_statement', true);
const starId = JavaScript.idForNodeType('*', false);
assert.isBelow(exportStatementId, JavaScript.nodeTypeCount);
assert.isBelow(starId, JavaScript.nodeTypeCount);
assert.equal(true, JavaScript.nodeTypeIsNamed(exportStatementId))
assert.equal("export_statement", JavaScript.nodeTypeForId(exportStatementId))
assert.equal(false, JavaScript.nodeTypeIsNamed(starId))
assert.equal("*", JavaScript.nodeTypeForId(starId))
assert.equal(true, JavaScript.nodeTypeIsNamed(exportStatementId));
assert.equal('export_statement', JavaScript.nodeTypeForId(exportStatementId));
assert.equal(false, JavaScript.nodeTypeIsNamed(starId));
assert.equal('*', JavaScript.nodeTypeForId(starId));
});
it("handles invalid inputs", () => {
it('handles invalid inputs', () => {
assert.equal(null, JavaScript.nodeTypeForId(-1));
assert.equal(null, JavaScript.nodeTypeForId(10000));
assert.equal(null, JavaScript.idForNodeType("export_statement", false));
assert.equal(null, JavaScript.idForNodeType('export_statement', false));
});
});
});
describe("Lookahead iterator", () => {
describe('Lookahead iterator', () => {
let lookahead;
let state;
before(async () => {
let Parser;
({ JavaScript, Parser } = await require("./helper"));
({JavaScript, Parser} = await require('./helper'));
const parser = new Parser().setLanguage(JavaScript);
const tree = parser.parse("function fn() {}");
const tree = parser.parse('function fn() {}');
parser.delete();
const cursor = tree.walk();
assert(cursor.gotoFirstChild());
@ -64,21 +64,21 @@ describe("Lookahead iterator", () => {
lookahead.delete();
});
const expected = ["identifier", "comment", "html_comment", "(", "*", "formal_parameters", "ERROR"];
it("should iterate over valid symbols in the state", () => {
const expected = ['identifier', 'comment', 'html_comment', '(', '*', 'formal_parameters', 'ERROR'];
it('should iterate over valid symbols in the state', () => {
const symbols = Array.from(lookahead);
assert.includeMembers(symbols, expected);
assert.lengthOf(symbols, expected.length);
});
it("should reset to the initial state", () => {
it('should reset to the initial state', () => {
assert(lookahead.resetState(state));
const symbols = Array.from(lookahead);
assert.includeMembers(symbols, expected);
assert.lengthOf(symbols, expected.length);
});
it("should reset", () => {
it('should reset', () => {
assert(lookahead.reset(JavaScript, state));
const symbols = Array.from(lookahead);
assert.includeMembers(symbols, expected);

View file

@ -1,11 +1,11 @@
const {assert} = require('chai');
let Parser, JavaScript;
let Parser; let JavaScript;
describe("Node", () => {
let parser, tree;
describe('Node', () => {
let parser; let tree;
before(async () =>
({Parser, JavaScript} = await require('./helper'))
({Parser, JavaScript} = await require('./helper')),
);
beforeEach(() => {
@ -18,83 +18,83 @@ describe("Node", () => {
tree.delete();
});
describe(".children", () => {
it("returns an array of child nodes", () => {
tree = parser.parse("x10 + 1000");
describe('.children', () => {
it('returns an array of child nodes', () => {
tree = parser.parse('x10 + 1000');
assert.equal(1, tree.rootNode.children.length);
const sumNode = tree.rootNode.firstChild.firstChild;
assert.deepEqual(
sumNode.children.map(child => child.type),
["identifier", "+", "number"]
sumNode.children.map((child) => child.type),
['identifier', '+', 'number'],
);
});
});
describe(".namedChildren", () => {
it("returns an array of named child nodes", () => {
tree = parser.parse("x10 + 1000");
describe('.namedChildren', () => {
it('returns an array of named child nodes', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild.firstChild;
assert.equal(1, tree.rootNode.namedChildren.length);
assert.deepEqual(
["identifier", "number"],
sumNode.namedChildren.map(child => child.type)
['identifier', 'number'],
sumNode.namedChildren.map((child) => child.type),
);
});
});
describe(".startIndex and .endIndex", () => {
it("returns the character index where the node starts/ends in the text", () => {
tree = parser.parse("a👍👎1 / b👎c👎");
describe('.startIndex and .endIndex', () => {
it('returns the character index where the node starts/ends in the text', () => {
tree = parser.parse('a👍👎1 / b👎c👎');
const quotientNode = tree.rootNode.firstChild.firstChild;
assert.equal(0, quotientNode.startIndex);
assert.equal(15, quotientNode.endIndex);
assert.deepEqual(
[0, 7, 9],
quotientNode.children.map(child => child.startIndex)
quotientNode.children.map((child) => child.startIndex),
);
assert.deepEqual(
[6, 8, 15],
quotientNode.children.map(child => child.endIndex)
quotientNode.children.map((child) => child.endIndex),
);
});
});
describe(".startPosition and .endPosition", () => {
it("returns the row and column where the node starts/ends in the text", () => {
tree = parser.parse("x10 + 1000");
describe('.startPosition and .endPosition', () => {
it('returns the row and column where the node starts/ends in the text', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild.firstChild;
assert.equal("binary_expression", sumNode.type);
assert.equal('binary_expression', sumNode.type);
assert.deepEqual({ row: 0, column: 0 }, sumNode.startPosition);
assert.deepEqual({ row: 0, column: 10 }, sumNode.endPosition);
assert.deepEqual({row: 0, column: 0}, sumNode.startPosition);
assert.deepEqual({row: 0, column: 10}, sumNode.endPosition);
assert.deepEqual(
[{ row: 0, column: 0 }, { row: 0, column: 4 }, { row: 0, column: 6 }],
sumNode.children.map(child => child.startPosition)
[{row: 0, column: 0}, {row: 0, column: 4}, {row: 0, column: 6}],
sumNode.children.map((child) => child.startPosition),
);
assert.deepEqual(
[{ row: 0, column: 3 }, { row: 0, column: 5 }, { row: 0, column: 10 }],
sumNode.children.map(child => child.endPosition)
[{row: 0, column: 3}, {row: 0, column: 5}, {row: 0, column: 10}],
sumNode.children.map((child) => child.endPosition),
);
});
it("handles characters that occupy two UTF16 code units", () => {
tree = parser.parse("a👍👎1 /\n b👎c👎");
it('handles characters that occupy two UTF16 code units', () => {
tree = parser.parse('a👍👎1 /\n b👎c👎');
const sumNode = tree.rootNode.firstChild.firstChild;
assert.deepEqual(
[
[{ row: 0, column: 0 }, { row: 0, column: 6 }],
[{ row: 0, column: 7 }, { row: 0, column: 8 }],
[{ row: 1, column: 1 }, { row: 1, column: 7 }]
[{row: 0, column: 0}, {row: 0, column: 6}],
[{row: 0, column: 7}, {row: 0, column: 8}],
[{row: 1, column: 1}, {row: 1, column: 7}],
],
sumNode.children.map(child => [child.startPosition, child.endPosition])
sumNode.children.map((child) => [child.startPosition, child.endPosition]),
);
});
});
describe(".parent", () => {
it("returns the node's parent", () => {
tree = parser.parse("x10 + 1000");
describe('.parent', () => {
it('returns the node\'s parent', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild;
const variableNode = sumNode.firstChild;
assert.notEqual(sumNode.id, variableNode.id);
@ -105,7 +105,7 @@ describe("Node", () => {
describe('.child(), .firstChild, .lastChild', () => {
it('returns null when the node has no children', () => {
tree = parser.parse("x10 + 1000");
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild.firstChild;
const variableNode = sumNode.firstChild;
assert.equal(variableNode.firstChild, null);
@ -113,12 +113,12 @@ describe("Node", () => {
assert.equal(variableNode.firstNamedChild, null);
assert.equal(variableNode.lastNamedChild, null);
assert.equal(variableNode.child(1), null);
})
});
});
describe('.childForFieldName()', () => {
it('returns null when the node has no children', () => {
tree = parser.parse("class A { b() {} }");
tree = parser.parse('class A { b() {} }');
const classNode = tree.rootNode.firstChild;
assert.equal(classNode.type, 'class_declaration');
@ -145,119 +145,119 @@ describe("Node", () => {
});
});
describe(".nextSibling and .previousSibling", () => {
it("returns the node's next and previous sibling", () => {
tree = parser.parse("x10 + 1000");
describe('.nextSibling and .previousSibling', () => {
it('returns the node\'s next and previous sibling', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild.firstChild;
assert.equal(sumNode.children[1].id, sumNode.children[0].nextSibling.id);
assert.equal(sumNode.children[2].id, sumNode.children[1].nextSibling.id);
assert.equal(
sumNode.children[0].id,
sumNode.children[1].previousSibling.id
sumNode.children[1].previousSibling.id,
);
assert.equal(
sumNode.children[1].id,
sumNode.children[2].previousSibling.id
sumNode.children[2].previousSibling.id,
);
});
});
describe(".nextNamedSibling and .previousNamedSibling", () => {
it("returns the node's next and previous named sibling", () => {
tree = parser.parse("x10 + 1000");
describe('.nextNamedSibling and .previousNamedSibling', () => {
it('returns the node\'s next and previous named sibling', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild.firstChild;
assert.equal(
sumNode.namedChildren[1].id,
sumNode.namedChildren[0].nextNamedSibling.id
sumNode.namedChildren[0].nextNamedSibling.id,
);
assert.equal(
sumNode.namedChildren[0].id,
sumNode.namedChildren[1].previousNamedSibling.id
sumNode.namedChildren[1].previousNamedSibling.id,
);
});
});
describe(".descendantForIndex(min, max)", () => {
it("returns the smallest node that spans the given range", () => {
tree = parser.parse("x10 + 1000");
describe('.descendantForIndex(min, max)', () => {
it('returns the smallest node that spans the given range', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild.firstChild;
assert.equal("identifier", sumNode.descendantForIndex(1, 2).type);
assert.equal("+", sumNode.descendantForIndex(4, 4).type);
assert.equal('identifier', sumNode.descendantForIndex(1, 2).type);
assert.equal('+', sumNode.descendantForIndex(4, 4).type);
assert.throws(() => {
sumNode.descendantForIndex(1, {});
}, "Arguments must be numbers");
}, 'Arguments must be numbers');
assert.throws(() => {
sumNode.descendantForIndex();
}, "Arguments must be numbers");
}, 'Arguments must be numbers');
});
});
describe(".namedDescendantForIndex", () => {
it("returns the smallest node that spans the given range", () => {
tree = parser.parse("x10 + 1000");
describe('.namedDescendantForIndex', () => {
it('returns the smallest node that spans the given range', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild;
assert.equal("identifier", sumNode.descendantForIndex(1, 2).type);
assert.equal("+", sumNode.descendantForIndex(4, 4).type);
assert.equal('identifier', sumNode.descendantForIndex(1, 2).type);
assert.equal('+', sumNode.descendantForIndex(4, 4).type);
});
});
describe(".descendantForPosition(min, max)", () => {
it("returns the smallest node that spans the given range", () => {
tree = parser.parse("x10 + 1000");
describe('.descendantForPosition(min, max)', () => {
it('returns the smallest node that spans the given range', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild;
assert.equal(
"identifier",
'identifier',
sumNode.descendantForPosition(
{ row: 0, column: 1 },
{ row: 0, column: 2 }
).type
{row: 0, column: 1},
{row: 0, column: 2},
).type,
);
assert.equal(
"+",
sumNode.descendantForPosition({ row: 0, column: 4 }).type
'+',
sumNode.descendantForPosition({row: 0, column: 4}).type,
);
assert.throws(() => {
sumNode.descendantForPosition(1, {});
}, "Arguments must be {row, column} objects");
}, 'Arguments must be {row, column} objects');
assert.throws(() => {
sumNode.descendantForPosition();
}, "Arguments must be {row, column} objects");
}, 'Arguments must be {row, column} objects');
});
});
describe(".namedDescendantForPosition(min, max)", () => {
it("returns the smallest named node that spans the given range", () => {
tree = parser.parse("x10 + 1000");
describe('.namedDescendantForPosition(min, max)', () => {
it('returns the smallest named node that spans the given range', () => {
tree = parser.parse('x10 + 1000');
const sumNode = tree.rootNode.firstChild;
assert.equal(
sumNode.namedDescendantForPosition(
{ row: 0, column: 1 },
{ row: 0, column: 2 }
{row: 0, column: 1},
{row: 0, column: 2},
).type,
"identifier",
'identifier',
);
assert.equal(
sumNode.namedDescendantForPosition({ row: 0, column: 4 }).type,
'binary_expression'
sumNode.namedDescendantForPosition({row: 0, column: 4}).type,
'binary_expression',
);
});
});
describe(".hasError()", () => {
it("returns true if the node contains an error", () => {
tree = parser.parse("1 + 2 * * 3");
describe('.hasError()', () => {
it('returns true if the node contains an error', () => {
tree = parser.parse('1 + 2 * * 3');
const node = tree.rootNode;
assert.equal(
node.toString(),
'(program (expression_statement (binary_expression left: (number) right: (binary_expression left: (number) (ERROR) right: (number)))))'
'(program (expression_statement (binary_expression left: (number) right: (binary_expression left: (number) (ERROR) right: (number)))))',
);
const sum = node.firstChild.firstChild;
@ -268,13 +268,13 @@ describe("Node", () => {
});
});
describe(".isError()", () => {
it("returns true if the node is an error", () => {
tree = parser.parse("2 * * 3");
describe('.isError()', () => {
it('returns true if the node is an error', () => {
tree = parser.parse('2 * * 3');
const node = tree.rootNode;
assert.equal(
node.toString(),
'(program (expression_statement (binary_expression left: (number) (ERROR) right: (number))))'
'(program (expression_statement (binary_expression left: (number) (ERROR) right: (number))))',
);
const multi = node.firstChild.firstChild;
@ -286,17 +286,17 @@ describe("Node", () => {
});
});
describe(".isMissing()", () => {
it("returns true if the node is missing from the source and was inserted via error recovery", () => {
tree = parser.parse("(2 ||)");
describe('.isMissing()', () => {
it('returns true if the node is missing from the source and was inserted via error recovery', () => {
tree = parser.parse('(2 ||)');
const node = tree.rootNode;
assert.equal(
node.toString(),
"(program (expression_statement (parenthesized_expression (binary_expression left: (number) right: (MISSING identifier)))))"
'(program (expression_statement (parenthesized_expression (binary_expression left: (number) right: (MISSING identifier)))))',
);
const sum = node.firstChild.firstChild.firstNamedChild;
assert.equal(sum.type, 'binary_expression')
assert.equal(sum.type, 'binary_expression');
assert(sum.hasError());
assert(!sum.children[0].isMissing());
assert(!sum.children[1].isMissing());
@ -304,33 +304,33 @@ describe("Node", () => {
});
});
describe(".text", () => {
const text = "α0 / b👎c👎";
describe('.text', () => {
const text = 'α0 / b👎c👎';
Object.entries({
'.parse(String)': text,
'.parse(Function)': offset => text.substr(offset, 4)
'.parse(Function)': (offset) => text.substr(offset, 4),
}).forEach(([method, parse]) =>
it(`returns the text of a node generated by ${method}`, async () => {
const [numeratorSrc, denominatorSrc] = text.split(/\s*\/\s+/)
tree = await parser.parse(text)
const [numeratorSrc, denominatorSrc] = text.split(/\s*\/\s+/);
tree = await parser.parse(text);
const quotientNode = tree.rootNode.firstChild.firstChild;
const [numerator, slash, denominator] = quotientNode.children;
assert.equal(text, tree.rootNode.text, 'root node text');
assert.equal(text, tree.rootNode.text, 'root node text');
assert.equal(denominatorSrc, denominator.text, 'denominator text');
assert.equal(text, quotientNode.text, 'quotient text');
assert.equal(numeratorSrc, numerator.text, 'numerator text');
assert.equal('/', slash.text, '"/" text');
})
assert.equal(text, quotientNode.text, 'quotient text');
assert.equal(numeratorSrc, numerator.text, 'numerator text');
assert.equal('/', slash.text, '"/" text');
}),
);
});
describe(".parseState, .nextParseState", () => {
const text = "10 / 5";
describe('.parseState, .nextParseState', () => {
const text = '10 / 5';
it("returns node parse state ids", async () => {
tree = await parser.parse(text)
it('returns node parse state ids', async () => {
tree = await parser.parse(text);
const quotientNode = tree.rootNode.firstChild.firstChild;
const [numerator, slash, denominator] = quotientNode.children;
@ -340,15 +340,15 @@ describe("Node", () => {
assert.isAbove(numerator.parseState, 0);
assert.isAbove(slash.parseState, 0);
assert.isAbove(denominator.parseState, 0);
})
});
it("returns next parse state equal to the language", async () => {
it('returns next parse state equal to the language', async () => {
tree = await parser.parse(text);
const quotientNode = tree.rootNode.firstChild.firstChild;
quotientNode.children.forEach(node => {
quotientNode.children.forEach((node) => {
assert.equal(
node.nextParseState,
JavaScript.nextState(node.parseState, node.grammarId)
JavaScript.nextState(node.parseState, node.grammarId),
);
});
});
@ -356,82 +356,82 @@ describe("Node", () => {
describe('.descendantsOfType(type, min, max)', () => {
it('finds all of the descendants of the given type in the given range', () => {
tree = parser.parse("a + 1 * b * 2 + c + 3");
tree = parser.parse('a + 1 * b * 2 + c + 3');
const outerSum = tree.rootNode.firstChild.firstChild;
let descendants = outerSum.descendantsOfType('number', {row: 0, column: 2}, {row: 0, column: 15})
let descendants = outerSum.descendantsOfType('number', {row: 0, column: 2}, {row: 0, column: 15});
assert.deepEqual(
descendants.map(node => node.startIndex),
[4, 12]
descendants.map((node) => node.startIndex),
[4, 12],
);
assert.deepEqual(
descendants.map(node => node.endPosition),
[{row: 0, column: 5}, {row: 0, column: 13}]
descendants.map((node) => node.endPosition),
[{row: 0, column: 5}, {row: 0, column: 13}],
);
descendants = outerSum.descendantsOfType('identifier', {row: 0, column: 2}, {row: 0, column: 15})
descendants = outerSum.descendantsOfType('identifier', {row: 0, column: 2}, {row: 0, column: 15});
assert.deepEqual(
descendants.map(node => node.startIndex),
[8]
descendants.map((node) => node.startIndex),
[8],
);
descendants = outerSum.descendantsOfType('identifier', {row: 0, column: 0}, {row: 0, column: 30})
descendants = outerSum.descendantsOfType('identifier', {row: 0, column: 0}, {row: 0, column: 30});
assert.deepEqual(
descendants.map(node => node.startIndex),
[0, 8, 16]
descendants.map((node) => node.startIndex),
[0, 8, 16],
);
descendants = outerSum.descendantsOfType('number', {row: 0, column: 0}, {row: 0, column: 30})
descendants = outerSum.descendantsOfType('number', {row: 0, column: 0}, {row: 0, column: 30});
assert.deepEqual(
descendants.map(node => node.startIndex),
[4, 12, 20]
descendants.map((node) => node.startIndex),
[4, 12, 20],
);
descendants = outerSum.descendantsOfType(
['identifier', 'number'],
{row: 0, column: 0},
{row: 0, column: 30}
)
{row: 0, column: 30},
);
assert.deepEqual(
descendants.map(node => node.startIndex),
[0, 4, 8, 12, 16, 20]
descendants.map((node) => node.startIndex),
[0, 4, 8, 12, 16, 20],
);
descendants = outerSum.descendantsOfType('number')
descendants = outerSum.descendantsOfType('number');
assert.deepEqual(
descendants.map(node => node.startIndex),
[4, 12, 20]
descendants.map((node) => node.startIndex),
[4, 12, 20],
);
descendants = outerSum.firstChild.descendantsOfType('number', {row: 0, column: 0}, {row: 0, column: 30})
descendants = outerSum.firstChild.descendantsOfType('number', {row: 0, column: 0}, {row: 0, column: 30});
assert.deepEqual(
descendants.map(node => node.startIndex),
[4, 12]
descendants.map((node) => node.startIndex),
[4, 12],
);
})
});
});
describe.skip('.closest(type)', () => {
it('returns the closest ancestor of the given type', () => {
tree = parser.parse("a(b + -d.e)");
const property = tree.rootNode.descendantForIndex("a(b + -d.".length);
tree = parser.parse('a(b + -d.e)');
const property = tree.rootNode.descendantForIndex('a(b + -d.'.length);
assert.equal(property.type, 'property_identifier');
const unary = property.closest('unary_expression')
assert.equal(unary.type, 'unary_expression')
assert.equal(unary.startIndex, 'a(b + '.length)
assert.equal(unary.endIndex, 'a(b + -d.e'.length)
const unary = property.closest('unary_expression');
assert.equal(unary.type, 'unary_expression');
assert.equal(unary.startIndex, 'a(b + '.length);
assert.equal(unary.endIndex, 'a(b + -d.e'.length);
const sum = property.closest(['binary_expression', 'call_expression'])
assert.equal(sum.type, 'binary_expression')
assert.equal(sum.startIndex, 2)
assert.equal(sum.endIndex, 'a(b + -d.e'.length)
const sum = property.closest(['binary_expression', 'call_expression']);
assert.equal(sum.type, 'binary_expression');
assert.equal(sum.startIndex, 2);
assert.equal(sum.endIndex, 'a(b + -d.e'.length);
});
it('throws an exception when an invalid argument is given', () => {
tree = parser.parse("a + 1 * b * 2 + c + 3");
const number = tree.rootNode.descendantForIndex(4)
tree = parser.parse('a + 1 * b * 2 + c + 3');
const number = tree.rootNode.descendantForIndex(4);
assert.throws(() => number.closest({a: 1}), /Argument must be a string or array of strings/)
assert.throws(() => number.closest({a: 1}), /Argument must be a string or array of strings/);
});
});

View file

@ -1,11 +1,11 @@
const {assert} = require('chai');
let Parser, JavaScript, languageURL;
let Parser; let JavaScript; let languageURL;
describe("Parser", () => {
describe('Parser', () => {
let parser;
before(async () =>
({Parser, JavaScript, languageURL} = await require('./helper'))
({Parser, JavaScript, languageURL} = await require('./helper')),
);
beforeEach(() => {
@ -13,11 +13,11 @@ describe("Parser", () => {
});
afterEach(() => {
parser.delete()
parser.delete();
});
describe(".setLanguage", () => {
it("allows setting the language to null", () => {
describe('.setLanguage', () => {
it('allows setting the language to null', () => {
assert.equal(parser.getLanguage(), null);
parser.setLanguage(JavaScript);
assert.equal(parser.getLanguage(), JavaScript);
@ -25,112 +25,114 @@ describe("Parser", () => {
assert.equal(parser.getLanguage(), null);
});
it("throws an exception when the given object is not a tree-sitter language", () => {
it('throws an exception when the given object is not a tree-sitter language', () => {
assert.throws(() => parser.setLanguage({}), /Argument must be a Language/);
assert.throws(() => parser.setLanguage(1), /Argument must be a Language/);
});
});
describe(".setLogger", () => {
describe('.setLogger', () => {
beforeEach(() => {
parser.setLanguage(JavaScript)
parser.setLanguage(JavaScript);
});
it("calls the given callback for each parse event", () => {
it('calls the given callback for each parse event', () => {
const debugMessages = [];
parser.setLogger((message) => debugMessages.push(message));
parser.parse("a + b + c");
parser.parse('a + b + c');
assert.includeMembers(debugMessages, [
"skip character:' '",
"consume character:'b'",
"reduce sym:program, child_count:1",
"accept"
'skip character:\' \'',
'consume character:\'b\'',
'reduce sym:program, child_count:1',
'accept',
]);
});
it("allows the callback to be retrieved later", () => {
const callback = () => {}
it('allows the callback to be retrieved later', () => {
const callback = () => {};
parser.setLogger(callback);
assert.equal(parser.getLogger(), callback);
parser.setLogger(false);
assert.equal(parser.getLogger(), null);
});
it("disables debugging when given a falsy value", () => {
it('disables debugging when given a falsy value', () => {
const debugMessages = [];
parser.setLogger((message) => debugMessages.push(message));
parser.setLogger(false);
parser.parse("a + b * c");
parser.parse('a + b * c');
assert.equal(debugMessages.length, 0);
});
it("throws an error when given a truthy value that isn't a function ", () => {
it('throws an error when given a truthy value that isn\'t a function ', () => {
assert.throws(
() => parser.setLogger("5"),
"Logger callback must be a function"
() => parser.setLogger('5'),
'Logger callback must be a function',
);
});
it("rethrows errors thrown by the logging callback", () => {
const error = new Error("The error message");
parser.setLogger((msg, params) => { throw error; });
it('rethrows errors thrown by the logging callback', () => {
const error = new Error('The error message');
parser.setLogger((msg, params) => {
throw error;
});
assert.throws(
() => parser.parse("ok;"),
"The error message"
() => parser.parse('ok;'),
'The error message',
);
});
});
describe(".parse", () => {
describe('.parse', () => {
let tree;
beforeEach(() => {
tree = null;
parser.setLanguage(JavaScript)
parser.setLanguage(JavaScript);
});
afterEach(() => {
if (tree) tree.delete();
});
it("reads from the given input", () => {
const parts = ["first", "_", "second", "_", "third"];
it('reads from the given input', () => {
const parts = ['first', '_', 'second', '_', 'third'];
tree = parser.parse(() => parts.shift());
assert.equal(tree.rootNode.toString(), "(program (expression_statement (identifier)))");
assert.equal(tree.rootNode.toString(), '(program (expression_statement (identifier)))');
});
it("stops reading when the input callback return something that's not a string", () => {
const parts = ["abc", "def", "ghi", {}, {}, {}, "second-word", " "];
it('stops reading when the input callback return something that\'s not a string', () => {
const parts = ['abc', 'def', 'ghi', {}, {}, {}, 'second-word', ' '];
tree = parser.parse(() => parts.shift());
assert.equal(
tree.rootNode.toString(),
"(program (expression_statement (identifier)))"
'(program (expression_statement (identifier)))',
);
assert.equal(tree.rootNode.endIndex, 9);
assert.equal(parts.length, 2);
});
it("throws an exception when the given input is not a function", () => {
assert.throws(() => parser.parse(null), "Argument must be a string or a function");
assert.throws(() => parser.parse(5), "Argument must be a string or a function");
assert.throws(() => parser.parse({}), "Argument must be a string or a function");
it('throws an exception when the given input is not a function', () => {
assert.throws(() => parser.parse(null), 'Argument must be a string or a function');
assert.throws(() => parser.parse(5), 'Argument must be a string or a function');
assert.throws(() => parser.parse({}), 'Argument must be a string or a function');
});
it("handles long input strings", () => {
it('handles long input strings', () => {
const repeatCount = 10000;
const inputString = "[" + "0,".repeat(repeatCount) + "]";
const inputString = '[' + '0,'.repeat(repeatCount) + ']';
tree = parser.parse(inputString);
assert.equal(tree.rootNode.type, "program");
assert.equal(tree.rootNode.type, 'program');
assert.equal(tree.rootNode.firstChild.firstChild.namedChildCount, repeatCount);
}).timeout(5000);
it("can use the bash parser", async () => {
it('can use the bash parser', async () => {
parser.setLanguage(await Parser.Language.load(languageURL('bash')));
tree = parser.parse("FOO=bar echo <<EOF 2> err.txt > hello.txt \nhello${FOO}\nEOF");
tree = parser.parse('FOO=bar echo <<EOF 2> err.txt > hello.txt \nhello${FOO}\nEOF');
assert.equal(
tree.rootNode.toString(),
'(program ' +
'(program ' +
'(redirected_statement ' +
'body: (command ' +
'(variable_assignment name: (variable_name) value: (word)) ' +
@ -139,13 +141,13 @@ describe("Parser", () => {
'redirect: (file_redirect descriptor: (file_descriptor) destination: (word)) ' +
'redirect: (file_redirect destination: (word)) ' +
'(heredoc_body ' +
'(expansion (variable_name)) (heredoc_content)) (heredoc_end))))'
'(expansion (variable_name)) (heredoc_content)) (heredoc_end))))',
);
}).timeout(5000);
it("can use the c++ parser", async () => {
it('can use the c++ parser', async () => {
parser.setLanguage(await Parser.Language.load(languageURL('cpp')));
tree = parser.parse("const char *s = R\"EOF(HELLO WORLD)EOF\";");
tree = parser.parse('const char *s = R"EOF(HELLO WORLD)EOF";');
assert.equal(
tree.rootNode.toString(),
'(translation_unit (declaration ' +
@ -153,22 +155,22 @@ describe("Parser", () => {
'type: (primitive_type) ' +
'declarator: (init_declarator ' +
'declarator: (pointer_declarator declarator: (identifier)) ' +
'value: (raw_string_literal delimiter: (raw_string_delimiter) (raw_string_content) (raw_string_delimiter)))))'
'value: (raw_string_literal delimiter: (raw_string_delimiter) (raw_string_content) (raw_string_delimiter)))))',
);
}).timeout(5000);
it("can use the HTML parser", async () => {
it('can use the HTML parser', async () => {
parser.setLanguage(await Parser.Language.load(languageURL('html')));
tree = parser.parse("<div><span><custom></custom></span></div>");
tree = parser.parse('<div><span><custom></custom></span></div>');
assert.equal(
tree.rootNode.toString(),
'(fragment (element (start_tag (tag_name)) (element (start_tag (tag_name)) (element (start_tag (tag_name)) (end_tag (tag_name))) (end_tag (tag_name))) (end_tag (tag_name))))'
'(fragment (element (start_tag (tag_name)) (element (start_tag (tag_name)) (element (start_tag (tag_name)) (end_tag (tag_name))) (end_tag (tag_name))) (end_tag (tag_name))))',
);
}).timeout(5000);
it("can use the python parser", async () => {
it('can use the python parser', async () => {
parser.setLanguage(await Parser.Language.load(languageURL('python')));
tree = parser.parse("class A:\n def b():\n c()");
tree = parser.parse('class A:\n def b():\n c()');
assert.equal(
tree.rootNode.toString(),
'(module (class_definition ' +
@ -179,25 +181,25 @@ describe("Parser", () => {
'parameters: (parameters) ' +
'body: (block (expression_statement (call ' +
'function: (identifier) ' +
'arguments: (argument_list))))))))'
'arguments: (argument_list))))))))',
);
}).timeout(5000);
it("can use the rust parser", async () => {
it('can use the rust parser', async () => {
parser.setLanguage(await Parser.Language.load(languageURL('rust')));
tree = parser.parse("const x: &'static str = r###\"hello\"###;");
tree = parser.parse('const x: &\'static str = r###"hello"###;');
assert.equal(
tree.rootNode.toString(),
'(source_file (const_item ' +
'name: (identifier) ' +
'type: (reference_type (lifetime (identifier)) type: (primitive_type)) ' +
'value: (raw_string_literal)))'
'value: (raw_string_literal)))',
);
}).timeout(5000);
it("can use the typescript parser", async () => {
it('can use the typescript parser', async () => {
parser.setLanguage(await Parser.Language.load(languageURL('typescript')));
tree = parser.parse("a()\nb()\n[c]");
tree = parser.parse('a()\nb()\n[c]');
assert.equal(
tree.rootNode.toString(),
'(program ' +
@ -206,13 +208,13 @@ describe("Parser", () => {
'object: (call_expression ' +
'function: (identifier) ' +
'arguments: (arguments)) ' +
'index: (identifier))))'
'index: (identifier))))',
);
}).timeout(5000);
it("can use the tsx parser", async () => {
it('can use the tsx parser', async () => {
parser.setLanguage(await Parser.Language.load(languageURL('tsx')));
tree = parser.parse("a()\nb()\n[c]");
tree = parser.parse('a()\nb()\n[c]');
assert.equal(
tree.rootNode.toString(),
'(program ' +
@ -221,17 +223,17 @@ describe("Parser", () => {
'object: (call_expression ' +
'function: (identifier) ' +
'arguments: (arguments)) ' +
'index: (identifier))))'
'index: (identifier))))',
);
}).timeout(5000);
it('parses only the text within the `includedRanges` if they are specified', () => {
const sourceCode = "<% foo() %> <% bar %>";
const sourceCode = '<% foo() %> <% bar %>';
const start1 = sourceCode.indexOf('foo');
const end1 = start1 + 5
const end1 = start1 + 5;
const start2 = sourceCode.indexOf('bar');
const end2 = start2 + 3
const end2 = start2 + 3;
const tree = parser.parse(sourceCode, null, {
includedRanges: [
@ -239,20 +241,21 @@ describe("Parser", () => {
startIndex: start1,
endIndex: end1,
startPosition: {row: 0, column: start1},
endPosition: {row: 0, column: end1}
endPosition: {row: 0, column: end1},
},
{
startIndex: start2,
endIndex: end2,
startPosition: {row: 0, column: start2},
endPosition: {row: 0, column: end2}
endPosition: {row: 0, column: end2},
},
]
],
});
assert.equal(
tree.rootNode.toString(),
'(program (expression_statement (call_expression function: (identifier) arguments: (arguments))) (expression_statement (identifier)))'
'(program (expression_statement (call_expression function: (identifier) arguments: (arguments))) (expression_statement (identifier)))',
);
})
});});
});
});
});

View file

@ -1,10 +1,10 @@
const { assert } = require("chai");
let Parser, JavaScript;
const {assert} = require('chai');
let Parser; let JavaScript;
describe("Query", () => {
let parser, tree, query;
describe('Query', () => {
let parser; let tree; let query;
before(async () => ({ Parser, JavaScript } = await require("./helper")));
before(async () => ({Parser, JavaScript} = await require('./helper')));
beforeEach(() => {
parser = new Parser().setLanguage(JavaScript);
@ -16,73 +16,73 @@ describe("Query", () => {
if (query) query.delete();
});
describe("construction", () => {
it("throws an error on invalid patterns", () => {
describe('construction', () => {
it('throws an error on invalid patterns', () => {
assert.throws(() => {
JavaScript.query("(function_declaration wat)");
}, "Bad syntax at offset 22: 'wat)'...");
JavaScript.query('(function_declaration wat)');
}, 'Bad syntax at offset 22: \'wat)\'...');
assert.throws(() => {
JavaScript.query("(non_existent)");
}, "Bad node name 'non_existent'");
JavaScript.query('(non_existent)');
}, 'Bad node name \'non_existent\'');
assert.throws(() => {
JavaScript.query("(a)");
}, "Bad node name 'a'");
JavaScript.query('(a)');
}, 'Bad node name \'a\'');
assert.throws(() => {
JavaScript.query("(function_declaration non_existent:(identifier))");
}, "Bad field name 'non_existent'");
JavaScript.query('(function_declaration non_existent:(identifier))');
}, 'Bad field name \'non_existent\'');
assert.throws(() => {
JavaScript.query("(function_declaration name:(statement_block))");
}, "Bad pattern structure at offset 22: 'name:(statement_block))'");
JavaScript.query('(function_declaration name:(statement_block))');
}, 'Bad pattern structure at offset 22: \'name:(statement_block))\'');
});
it("throws an error on invalid predicates", () => {
it('throws an error on invalid predicates', () => {
assert.throws(() => {
JavaScript.query("((identifier) @abc (#eq? @ab hi))");
}, "Bad capture name @ab");
JavaScript.query('((identifier) @abc (#eq? @ab hi))');
}, 'Bad capture name @ab');
assert.throws(() => {
JavaScript.query("((identifier) @abc (#eq? @ab hi))");
}, "Bad capture name @ab");
JavaScript.query('((identifier) @abc (#eq? @ab hi))');
}, 'Bad capture name @ab');
assert.throws(() => {
JavaScript.query("((identifier) @abc (#eq?))");
}, "Wrong number of arguments to `#eq?` predicate. Expected 2, got 0");
JavaScript.query('((identifier) @abc (#eq?))');
}, 'Wrong number of arguments to `#eq?` predicate. Expected 2, got 0');
assert.throws(() => {
JavaScript.query("((identifier) @a (eq? @a @a @a))");
}, "Wrong number of arguments to `#eq?` predicate. Expected 2, got 3");
JavaScript.query('((identifier) @a (eq? @a @a @a))');
}, 'Wrong number of arguments to `#eq?` predicate. Expected 2, got 3');
});
});
describe(".matches", () => {
it("returns all of the matches for the given query", () => {
tree = parser.parse("function one() { two(); function three() {} }");
describe('.matches', () => {
it('returns all of the matches for the given query', () => {
tree = parser.parse('function one() { two(); function three() {} }');
query = JavaScript.query(`
(function_declaration name: (identifier) @fn-def)
(call_expression function: (identifier) @fn-ref)
`);
const matches = query.matches(tree.rootNode);
assert.deepEqual(formatMatches(matches), [
{ pattern: 0, captures: [{ name: "fn-def", text: "one" }] },
{ pattern: 1, captures: [{ name: "fn-ref", text: "two" }] },
{ pattern: 0, captures: [{ name: "fn-def", text: "three" }] },
{pattern: 0, captures: [{name: 'fn-def', text: 'one'}]},
{pattern: 1, captures: [{name: 'fn-ref', text: 'two'}]},
{pattern: 0, captures: [{name: 'fn-def', text: 'three'}]},
]);
});
it("can search in a specified ranges", () => {
tree = parser.parse("[a, b,\nc, d,\ne, f,\ng, h]");
query = JavaScript.query("(identifier) @element");
it('can search in a specified ranges', () => {
tree = parser.parse('[a, b,\nc, d,\ne, f,\ng, h]');
query = JavaScript.query('(identifier) @element');
const matches = query.matches(
tree.rootNode,
{ row: 1, column: 1 },
{ row: 3, column: 1 }
{row: 1, column: 1},
{row: 3, column: 1},
);
assert.deepEqual(formatMatches(matches), [
{ pattern: 0, captures: [{ name: "element", text: "d" }] },
{ pattern: 0, captures: [{ name: "element", text: "e" }] },
{ pattern: 0, captures: [{ name: "element", text: "f" }] },
{ pattern: 0, captures: [{ name: "element", text: "g" }] },
{pattern: 0, captures: [{name: 'element', text: 'd'}]},
{pattern: 0, captures: [{name: 'element', text: 'e'}]},
{pattern: 0, captures: [{name: 'element', text: 'f'}]},
{pattern: 0, captures: [{name: 'element', text: 'g'}]},
]);
});
it("handles predicates that compare the text of capture to literal strings", () => {
it('handles predicates that compare the text of capture to literal strings', () => {
tree = parser.parse(`
giraffe(1, 2, []);
helment([false]);
@ -103,14 +103,14 @@ describe("Query", () => {
const matches = query.matches(tree.rootNode);
assert.deepEqual(formatMatches(matches), [
{ pattern: 0, captures: [{ name: "name", text: "giraffe" }] },
{ pattern: 0, captures: [{ name: "name", text: "gross" }] },
{pattern: 0, captures: [{name: 'name', text: 'giraffe'}]},
{pattern: 0, captures: [{name: 'name', text: 'gross'}]},
]);
});
});
describe(".captures", () => {
it("returns all of the captures for the given query, in order", () => {
describe('.captures', () => {
it('returns all of the captures for the given query, in order', () => {
tree = parser.parse(`
a({
bc: function de() {
@ -138,22 +138,22 @@ describe("Query", () => {
const captures = query.captures(tree.rootNode);
assert.deepEqual(formatCaptures(captures), [
{ name: "method.def", text: "bc" },
{ name: "delimiter", text: ":" },
{ name: "method.alias", text: "de" },
{ name: "function.def", text: "fg" },
{ name: "operator", text: "=" },
{ name: "function.alias", text: "hi" },
{ name: "method.def", text: "jk" },
{ name: "delimiter", text: ":" },
{ name: "method.alias", text: "lm" },
{ name: "function.def", text: "no" },
{ name: "operator", text: "=" },
{ name: "function.alias", text: "pq" },
{name: 'method.def', text: 'bc'},
{name: 'delimiter', text: ':'},
{name: 'method.alias', text: 'de'},
{name: 'function.def', text: 'fg'},
{name: 'operator', text: '='},
{name: 'function.alias', text: 'hi'},
{name: 'method.def', text: 'jk'},
{name: 'delimiter', text: ':'},
{name: 'method.alias', text: 'lm'},
{name: 'function.def', text: 'no'},
{name: 'operator', text: '='},
{name: 'function.alias', text: 'pq'},
]);
});
it("handles conditions that compare the text of capture to literal strings", () => {
it('handles conditions that compare the text of capture to literal strings', () => {
tree = parser.parse(`
lambda
panda
@ -179,20 +179,20 @@ describe("Query", () => {
const captures = query.captures(tree.rootNode);
assert.deepEqual(formatCaptures(captures), [
{ name: "variable", text: "panda" },
{ name: "variable", text: "toad" },
{ name: "variable", text: "ab" },
{ name: "variable", text: "require" },
{ name: "function.builtin", text: "require" },
{ name: "variable", text: "Cd" },
{ name: "constructor", text: "Cd" },
{ name: "variable", text: "EF" },
{ name: "constructor", text: "EF" },
{ name: "constant", text: "EF" },
{name: 'variable', text: 'panda'},
{name: 'variable', text: 'toad'},
{name: 'variable', text: 'ab'},
{name: 'variable', text: 'require'},
{name: 'function.builtin', text: 'require'},
{name: 'variable', text: 'Cd'},
{name: 'constructor', text: 'Cd'},
{name: 'variable', text: 'EF'},
{name: 'constructor', text: 'EF'},
{name: 'constant', text: 'EF'},
]);
});
it("handles conditions that compare the text of capture to each other", () => {
it('handles conditions that compare the text of capture to each other', () => {
tree = parser.parse(`
ab = abc + 1;
def = de + 1;
@ -211,12 +211,12 @@ describe("Query", () => {
const captures = query.captures(tree.rootNode);
assert.deepEqual(formatCaptures(captures), [
{ name: "id1", text: "ghi" },
{ name: "id2", text: "ghi" },
{name: 'id1', text: 'ghi'},
{name: 'id2', text: 'ghi'},
]);
});
it("handles patterns with properties", () => {
it('handles patterns with properties', () => {
tree = parser.parse(`a(b.c);`);
query = JavaScript.query(`
((call_expression (identifier) @func)
@ -230,18 +230,18 @@ describe("Query", () => {
const captures = query.captures(tree.rootNode);
assert.deepEqual(formatCaptures(captures), [
{ name: "func", text: "a", setProperties: { foo: null, bar: "baz" } },
{name: 'func', text: 'a', setProperties: {foo: null, bar: 'baz'}},
{
name: "prop",
text: "c",
assertedProperties: { foo: null },
refutedProperties: { bar: "baz" },
name: 'prop',
text: 'c',
assertedProperties: {foo: null},
refutedProperties: {bar: 'baz'},
},
]);
assert.ok(!query.didExceedMatchLimit());
});
it("detects queries with too many permutations to track", () => {
it('detects queries with too many permutations to track', () => {
tree = parser.parse(`
[
hello, hello, hello, hello, hello, hello, hello, hello, hello, hello,
@ -256,11 +256,11 @@ describe("Query", () => {
(array (identifier) @pre (identifier) @post)
`);
const captures = query.captures(tree.rootNode, null, null, { matchLimit: 32 });
query.captures(tree.rootNode, null, null, {matchLimit: 32});
assert.ok(query.didExceedMatchLimit());
});
it("handles quantified captures properly", () => {
it('handles quantified captures properly', () => {
let captures;
tree = parser.parse(`
@ -276,7 +276,7 @@ describe("Query", () => {
)
`);
let expectCount = (tree, queryText, expectedCount) => {
const expectCount = (tree, queryText, expectedCount) => {
query = JavaScript.query(queryText);
captures = query.captures(tree.rootNode, null, null);
assert.equal(captures.length, expectedCount);
@ -284,68 +284,68 @@ describe("Query", () => {
expectCount(
tree,
` ( (comment)+ @foo (#any-eq? @foo "/// foo") ) `,
3
`((comment)+ @foo (#any-eq? @foo "/// foo"))`,
3,
);
expectCount(
tree,
` ( (comment)+ @foo (#eq? @foo "/// foo") ) `,
0
`((comment)+ @foo (#eq? @foo "/// foo"))`,
0,
);
expectCount(
tree,
` ( (comment)+ @foo (#any-not-eq? @foo "/// foo") ) `,
3
`((comment)+ @foo (#any-not-eq? @foo "/// foo"))`,
3,
);
expectCount(
tree,
` ( (comment)+ @foo (#not-eq? @foo "/// foo") ) `,
0
`((comment)+ @foo (#not-eq? @foo "/// foo"))`,
0,
);
expectCount(
tree,
` ( (comment)+ @foo (#match? @foo "^/// foo") ) `,
0
`((comment)+ @foo (#match? @foo "^/// foo"))`,
0,
);
expectCount(
tree,
` ( (comment)+ @foo (#any-match? @foo "^/// foo") ) `,
3
`((comment)+ @foo (#any-match? @foo "^/// foo"))`,
3,
);
expectCount(
tree,
` ( (comment)+ @foo (#not-match? @foo "^/// foo") ) `,
0
`((comment)+ @foo (#not-match? @foo "^/// foo"))`,
0,
);
expectCount(
tree,
` ( (comment)+ @foo (#not-match? @foo "fsdfsdafdfs") ) `,
3
`((comment)+ @foo (#not-match? @foo "fsdfsdafdfs"))`,
3,
);
expectCount(
tree,
` ( (comment)+ @foo (#any-not-match? @foo "^///") ) `,
0
`((comment)+ @foo (#any-not-match? @foo "^///"))`,
0,
);
expectCount(
tree,
` ( (comment)+ @foo (#any-not-match? @foo "^/// foo") ) `,
3
`((comment)+ @foo (#any-not-match? @foo "^/// foo"))`,
3,
);
})
});
});
describe(".predicatesForPattern(index)", () => {
it("returns all of the predicates as objects", () => {
describe('.predicatesForPattern(index)', () => {
it('returns all of the predicates as objects', () => {
query = JavaScript.query(`
(
(binary_expression
@ -364,26 +364,26 @@ describe("Query", () => {
assert.deepEqual(query.predicatesForPattern(0), [
{
operator: "something?",
operator: 'something?',
operands: [
{ type: "capture", name: "a" },
{ type: "capture", name: "b" },
{type: 'capture', name: 'a'},
{type: 'capture', name: 'b'},
],
},
{
operator: "something-else?",
operator: 'something-else?',
operands: [
{ type: "capture", name: "a" },
{ type: "string", value: "A" },
{ type: "capture", name: "b" },
{ type: "string", value: "B" },
{type: 'capture', name: 'a'},
{type: 'string', value: 'A'},
{type: 'capture', name: 'b'},
{type: 'string', value: 'B'},
],
},
]);
assert.deepEqual(query.predicatesForPattern(1), [
{
operator: "hello!",
operands: [{ type: "capture", name: "c" }],
operator: 'hello!',
operands: [{type: 'capture', name: 'c'}],
},
]);
assert.deepEqual(query.predicatesForPattern(2), []);
@ -392,7 +392,7 @@ describe("Query", () => {
});
function formatMatches(matches) {
return matches.map(({ pattern, captures }) => ({
return matches.map(({pattern, captures}) => ({
pattern,
captures: formatCaptures(captures),
}));

View file

@ -1,11 +1,11 @@
const {assert} = require('chai');
let Parser, JavaScript;
let Parser; let JavaScript;
describe("Tree", () => {
let parser, tree;
describe('Tree', () => {
let parser; let tree;
before(async () =>
({Parser, JavaScript} = await require('./helper'))
({Parser, JavaScript} = await require('./helper')),
);
beforeEach(() => {
@ -18,14 +18,14 @@ describe("Tree", () => {
});
describe('.edit', () => {
let input, edit
let input; let edit;
it('updates the positions of nodes', () => {
input = 'abc + cde';
tree = parser.parse(input);
assert.equal(
tree.rootNode.toString(),
"(program (expression_statement (binary_expression left: (identifier) right: (identifier))))"
'(program (expression_statement (binary_expression left: (identifier) right: (identifier))))',
);
let sumNode = tree.rootNode.firstChild.firstChild;
@ -51,17 +51,17 @@ describe("Tree", () => {
tree = parser.parse(input, tree);
assert.equal(
tree.rootNode.toString(),
"(program (expression_statement (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))))"
'(program (expression_statement (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))))',
);
});
it("handles non-ascii characters", () => {
it('handles non-ascii characters', () => {
input = 'αβδ + cde';
tree = parser.parse(input);
assert.equal(
tree.rootNode.toString(),
"(program (expression_statement (binary_expression left: (identifier) right: (identifier))))"
'(program (expression_statement (binary_expression left: (identifier) right: (identifier))))',
);
let variableNode = tree.rootNode.firstChild.firstChild.lastChild;
@ -76,65 +76,65 @@ describe("Tree", () => {
tree = parser.parse(input, tree);
assert.equal(
tree.rootNode.toString(),
"(program (expression_statement (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))))"
'(program (expression_statement (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))))',
);
});
});
describe(".getChangedRanges(previous)", () => {
it("reports the ranges of text whose syntactic meaning has changed", () => {
let sourceCode = "abcdefg + hij";
describe('.getChangedRanges(previous)', () => {
it('reports the ranges of text whose syntactic meaning has changed', () => {
let sourceCode = 'abcdefg + hij';
tree = parser.parse(sourceCode);
assert.equal(
tree.rootNode.toString(),
"(program (expression_statement (binary_expression left: (identifier) right: (identifier))))"
'(program (expression_statement (binary_expression left: (identifier) right: (identifier))))',
);
sourceCode = "abc + defg + hij";
sourceCode = 'abc + defg + hij';
tree.edit({
startIndex: 2,
oldEndIndex: 2,
newEndIndex: 5,
startPosition: { row: 0, column: 2 },
oldEndPosition: { row: 0, column: 2 },
newEndPosition: { row: 0, column: 5 }
startPosition: {row: 0, column: 2},
oldEndPosition: {row: 0, column: 2},
newEndPosition: {row: 0, column: 5},
});
const tree2 = parser.parse(sourceCode, tree);
assert.equal(
tree2.rootNode.toString(),
"(program (expression_statement (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))))"
'(program (expression_statement (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier))))',
);
const ranges = tree.getChangedRanges(tree2);
assert.deepEqual(ranges, [
{
startIndex: 0,
endIndex: "abc + defg".length,
startPosition: { row: 0, column: 0 },
endPosition: { row: 0, column: "abc + defg".length }
}
endIndex: 'abc + defg'.length,
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 'abc + defg'.length},
},
]);
tree2.delete();
});
it('throws an exception if the argument is not a tree', () => {
tree = parser.parse("abcdefg + hij");
tree = parser.parse('abcdefg + hij');
assert.throws(() => {
tree.getChangedRanges({});
}, /Argument must be a Tree/);
})
});
});
describe(".walk()", () => {
let cursor
describe('.walk()', () => {
let cursor;
afterEach(() => {
cursor.delete();
})
});
it('returns a cursor that can be used to walk the tree', () => {
tree = parser.parse('a * b + c / d');
@ -146,7 +146,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 13},
startIndex: 0,
endIndex: 13
endIndex: 13,
});
assert(cursor.gotoFirstChild());
@ -156,7 +156,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 13},
startIndex: 0,
endIndex: 13
endIndex: 13,
});
assert(cursor.gotoFirstChild());
@ -166,7 +166,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 13},
startIndex: 0,
endIndex: 13
endIndex: 13,
});
assert(cursor.gotoFirstChild());
@ -176,7 +176,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 5},
startIndex: 0,
endIndex: 5
endIndex: 5,
});
assert(cursor.gotoFirstChild());
@ -187,10 +187,10 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 1},
startIndex: 0,
endIndex: 1
endIndex: 1,
});
assert(!cursor.gotoFirstChild())
assert(!cursor.gotoFirstChild());
assert(cursor.gotoNextSibling());
assert.equal(cursor.nodeText, '*');
assertCursorState(cursor, {
@ -199,7 +199,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 2},
endPosition: {row: 0, column: 3},
startIndex: 2,
endIndex: 3
endIndex: 3,
});
assert(cursor.gotoNextSibling());
@ -210,7 +210,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 4},
endPosition: {row: 0, column: 5},
startIndex: 4,
endIndex: 5
endIndex: 5,
});
assert(!cursor.gotoNextSibling());
@ -221,7 +221,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 5},
startIndex: 0,
endIndex: 5
endIndex: 5,
});
assert(cursor.gotoNextSibling());
@ -231,7 +231,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 6},
endPosition: {row: 0, column: 7},
startIndex: 6,
endIndex: 7
endIndex: 7,
});
assert(cursor.gotoNextSibling());
@ -241,7 +241,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 8},
endPosition: {row: 0, column: 13},
startIndex: 8,
endIndex: 13
endIndex: 13,
});
{
@ -255,7 +255,7 @@ describe("Tree", () => {
startPosition: {row: 0, column: 6},
endPosition: {row: 0, column: 7},
startIndex: 6,
endIndex: 7
endIndex: 7,
});
assert(copy.gotoPreviousSibling());
@ -265,28 +265,28 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 5},
startIndex: 0,
endIndex: 5
endIndex: 5,
});
assert(copy.gotoLastChild());
assertCursorState(copy, {
nodeType: "identifier",
nodeType: 'identifier',
nodeIsNamed: true,
startPosition: {row: 0, column: 4},
endPosition: {row: 0, column: 5},
startIndex: 4,
endIndex: 5
})
endIndex: 5,
});
assert(copy.gotoParent());
assert(copy.gotoParent());
assert.equal(copy.nodeType, 'binary_expression')
assert.equal(copy.nodeType, 'binary_expression');
assert(copy.gotoParent());
assert.equal(copy.nodeType, 'expression_statement')
assert.equal(copy.nodeType, 'expression_statement');
assert(copy.gotoParent());
assert.equal(copy.nodeType, 'program')
assert.equal(copy.nodeType, 'program');
assert(!copy.gotoParent());
}
}
// const childIndex = cursor.gotoFirstChildForIndex(12);
// assertCursorState(cursor, {
@ -302,11 +302,11 @@ describe("Tree", () => {
// assert(cursor.gotoParent());
assert(cursor.gotoParent());
assert.equal(cursor.nodeType, 'binary_expression')
assert.equal(cursor.nodeType, 'binary_expression');
assert(cursor.gotoParent());
assert.equal(cursor.nodeType, 'expression_statement')
assert.equal(cursor.nodeType, 'expression_statement');
assert(cursor.gotoParent());
assert.equal(cursor.nodeType, 'program')
assert.equal(cursor.nodeType, 'program');
assert(!cursor.gotoParent());
});
@ -350,31 +350,31 @@ describe("Tree", () => {
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 5},
startIndex: 0,
endIndex: 5
endIndex: 5,
});
cursor.gotoFirstChild()
cursor.gotoFirstChild();
assertCursorState(cursor, {
nodeType: 'identifier',
nodeIsNamed: true,
startPosition: {row: 0, column: 0},
endPosition: {row: 0, column: 1},
startIndex: 0,
endIndex: 1
endIndex: 1,
});
assert(cursor.gotoParent());
assert(!cursor.gotoParent());
})
});
});
describe(".copy", () => {
it("creates another tree that remains stable if the original tree is edited", () => {
describe('.copy', () => {
it('creates another tree that remains stable if the original tree is edited', () => {
input = 'abc + cde';
tree = parser.parse(input);
assert.equal(
tree.rootNode.toString(),
"(program (expression_statement (binary_expression left: (identifier) right: (identifier))))"
'(program (expression_statement (binary_expression left: (identifier) right: (identifier))))',
);
const tree2 = tree.copy();
@ -386,10 +386,10 @@ describe("Tree", () => {
const leftNode2 = tree2.rootNode.firstChild.firstChild.firstChild;
const rightNode = tree.rootNode.firstChild.firstChild.lastChild;
const rightNode2 = tree2.rootNode.firstChild.firstChild.lastChild;
assert.equal(leftNode.endIndex, 6)
assert.equal(leftNode2.endIndex, 3)
assert.equal(rightNode.startIndex, 9)
assert.equal(rightNode2.startIndex, 6)
assert.equal(leftNode.endIndex, 6);
assert.equal(leftNode2.endIndex, 3);
assert.equal(rightNode.startIndex, 9);
assert.equal(rightNode2.startIndex, 6);
});
});
});
@ -406,16 +406,16 @@ function spliceInput(input, startIndex, lengthRemoved, newText) {
{
startIndex, startPosition,
oldEndIndex, oldEndPosition,
newEndIndex, newEndPosition
}
newEndIndex, newEndPosition,
},
];
}
function getExtent(text) {
let row = 0
let row = 0;
let index;
for (index = 0; index != -1; index = text.indexOf('\n', index)) {
index++
index++;
row++;
}
return {row, column: text.length - index};
@ -429,7 +429,7 @@ function assertCursorState(cursor, params) {
assert.deepEqual(cursor.startIndex, params.startIndex);
assert.deepEqual(cursor.endIndex, params.endIndex);
const node = cursor.currentNode()
const node = cursor.currentNode();
assert.equal(node.type, params.nodeType);
assert.equal(node.isNamed(), params.nodeIsNamed);
assert.deepEqual(node.startPosition, params.startPosition);