Johannes Loher
045991073b
All checks were successful
ci/woodpecker/pr/checks Pipeline was successful
602 lines
13 KiB
TypeScript
602 lines
13 KiB
TypeScript
// SPDX-FileCopyrightText: 2022 Johannes Loher
|
|
//
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
import { describe, expect, it } from 'vitest';
|
|
|
|
import { Lexer } from '../../src/expression-evaluation/lexer';
|
|
|
|
import type { Token } from '../../src/expression-evaluation/grammar';
|
|
|
|
describe('Lexer', () => {
|
|
const singleOperatorTestCases: { input: string; expected: Token[] }[] = [
|
|
{
|
|
input: '+',
|
|
expected: [
|
|
{ type: '+', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '-',
|
|
expected: [
|
|
{ type: '-', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '*',
|
|
expected: [
|
|
{ type: '*', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '**',
|
|
expected: [
|
|
{ type: '**', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '/',
|
|
expected: [
|
|
{ type: '/', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '%',
|
|
expected: [
|
|
{ type: '%', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '===',
|
|
expected: [
|
|
{ type: '===', pos: 0 },
|
|
{ type: 'eof', pos: 3 },
|
|
],
|
|
},
|
|
{
|
|
input: '!==',
|
|
expected: [
|
|
{ type: '!==', pos: 0 },
|
|
{ type: 'eof', pos: 3 },
|
|
],
|
|
},
|
|
{
|
|
input: '==',
|
|
expected: [
|
|
{ type: '==', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '<',
|
|
expected: [
|
|
{ type: '<', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '<=',
|
|
expected: [
|
|
{ type: '<=', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '>',
|
|
expected: [
|
|
{ type: '>', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '>=',
|
|
expected: [
|
|
{ type: '>=', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '&&',
|
|
expected: [
|
|
{ type: '&&', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '||',
|
|
expected: [
|
|
{ type: '||', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '&',
|
|
expected: [
|
|
{ type: '&', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '|',
|
|
expected: [
|
|
{ type: '|', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '<<',
|
|
expected: [
|
|
{ type: '<<', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '>>>',
|
|
expected: [
|
|
{ type: '>>>', pos: 0 },
|
|
{ type: 'eof', pos: 3 },
|
|
],
|
|
},
|
|
{
|
|
input: '.',
|
|
expected: [
|
|
{ type: '.', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '?.',
|
|
expected: [
|
|
{ type: '?.', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '??',
|
|
expected: [
|
|
{ type: '??', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '?',
|
|
expected: [
|
|
{ type: '?', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: ':',
|
|
expected: [
|
|
{ type: ':', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '(',
|
|
expected: [
|
|
{ type: '(', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: ')',
|
|
expected: [
|
|
{ type: ')', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '[',
|
|
expected: [
|
|
{ type: '[', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: ']',
|
|
expected: [
|
|
{ type: ']', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: ',',
|
|
expected: [
|
|
{ type: ',', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '{',
|
|
expected: [
|
|
{ type: '{', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '}',
|
|
expected: [
|
|
{ type: '}', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
];
|
|
|
|
const singleNumberTestCases: { input: string; expected: Token[] }[] = [
|
|
{
|
|
input: '1',
|
|
expected: [
|
|
{ type: 'number', symbol: '1', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '42',
|
|
expected: [
|
|
{ type: 'number', symbol: '42', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '42.9',
|
|
expected: [
|
|
{ type: 'number', symbol: '42.9', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: '.9',
|
|
expected: [
|
|
{ type: 'number', symbol: '.9', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '1_1',
|
|
expected: [
|
|
{ type: 'number', symbol: '1_1', pos: 0 },
|
|
{ type: 'eof', pos: 3 },
|
|
],
|
|
},
|
|
{
|
|
input: '10_1',
|
|
expected: [
|
|
{ type: 'number', symbol: '10_1', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: '1_1_1',
|
|
expected: [
|
|
{ type: 'number', symbol: '1_1_1', pos: 0 },
|
|
{ type: 'eof', pos: 5 },
|
|
],
|
|
},
|
|
{
|
|
input: '.1_1',
|
|
expected: [
|
|
{ type: 'number', symbol: '.1_1', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
];
|
|
|
|
const invalidNumberTestCases: { input: string; expected: Token[] }[] = [
|
|
{ input: '1.1.1', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: '1__1', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: '1_', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: '1._1', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: '0_1', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: '00_1', expected: [{ type: 'invalid', pos: 0 }] },
|
|
];
|
|
|
|
const singleIdentifierTestCases: { input: string; expected: Token[] }[] = [
|
|
{
|
|
input: 'foo',
|
|
expected: [
|
|
{ type: 'iden', symbol: 'foo', pos: 0 },
|
|
{ type: 'eof', pos: 3 },
|
|
],
|
|
},
|
|
{
|
|
input: '_foo',
|
|
expected: [
|
|
{ type: 'iden', symbol: '_foo', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: '$foo',
|
|
expected: [
|
|
{ type: 'iden', symbol: '$foo', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: 'foo1',
|
|
expected: [
|
|
{ type: 'iden', symbol: 'foo1', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: '_foo1_',
|
|
expected: [
|
|
{ type: 'iden', symbol: '_foo1_', pos: 0 },
|
|
{ type: 'eof', pos: 6 },
|
|
],
|
|
},
|
|
{
|
|
input: 'μ',
|
|
expected: [
|
|
{ type: 'iden', symbol: 'μ', pos: 0 },
|
|
{ type: 'eof', pos: 1 },
|
|
],
|
|
},
|
|
{
|
|
input: '._1',
|
|
expected: [
|
|
{ type: '.', pos: 0 },
|
|
{ type: 'iden', symbol: '_1', pos: 1 },
|
|
{ type: 'eof', pos: 3 },
|
|
],
|
|
},
|
|
{
|
|
input: 'true',
|
|
expected: [
|
|
{ type: 'iden', symbol: 'true', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: 'false',
|
|
expected: [
|
|
{ type: 'iden', symbol: 'false', pos: 0 },
|
|
{ type: 'eof', pos: 5 },
|
|
],
|
|
},
|
|
{
|
|
input: 'null',
|
|
expected: [
|
|
{ type: 'iden', symbol: 'null', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: 'undefined',
|
|
expected: [
|
|
{ type: 'iden', symbol: 'undefined', pos: 0 },
|
|
{ type: 'eof', pos: 9 },
|
|
],
|
|
},
|
|
];
|
|
|
|
const invalidIdentifierTestCases: { input: string; expected: Token[] }[] = [
|
|
{
|
|
input: '1foo',
|
|
expected: [
|
|
{ type: 'number', symbol: '1', pos: 0 },
|
|
{ type: 'iden', symbol: 'foo', pos: 1 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{ input: '↓', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: '"', expected: [{ type: 'invalid', pos: 0 }] },
|
|
];
|
|
|
|
const singleStringTestCases: { input: string; expected: Token[] }[] = [
|
|
{
|
|
input: '""',
|
|
expected: [
|
|
{ type: 'string', symbol: '""', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '"foo"',
|
|
expected: [
|
|
{ type: 'string', symbol: '"foo"', pos: 0 },
|
|
{ type: 'eof', pos: 5 },
|
|
],
|
|
},
|
|
{
|
|
input: '"\\""',
|
|
expected: [
|
|
{ type: 'string', symbol: '"\\""', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: '"\\\'"',
|
|
expected: [
|
|
{ type: 'string', symbol: '"\\\'"', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: "''",
|
|
expected: [
|
|
{ type: 'string', symbol: "''", pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: "'foo'",
|
|
expected: [
|
|
{ type: 'string', symbol: "'foo'", pos: 0 },
|
|
{ type: 'eof', pos: 5 },
|
|
],
|
|
},
|
|
{
|
|
input: "'\\''",
|
|
expected: [
|
|
{ type: 'string', symbol: "'\\''", pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: "'\\\"'",
|
|
expected: [
|
|
{ type: 'string', symbol: "'\\\"'", pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: '``',
|
|
expected: [
|
|
{ type: 'string', symbol: '``', pos: 0 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '`foo`',
|
|
expected: [
|
|
{ type: 'string', symbol: '`foo`', pos: 0 },
|
|
{ type: 'eof', pos: 5 },
|
|
],
|
|
},
|
|
{
|
|
input: '`\\``',
|
|
expected: [
|
|
{ type: 'string', symbol: '`\\``', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: '`\\"`',
|
|
expected: [
|
|
{ type: 'string', symbol: '`\\"`', pos: 0 },
|
|
{ type: 'eof', pos: 4 },
|
|
],
|
|
},
|
|
];
|
|
|
|
const invalidStringTestCases: { input: string; expected: Token[] }[] = [
|
|
{ input: '"', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: '"\\"', expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: "'", expected: [{ type: 'invalid', pos: 0 }] },
|
|
{ input: "'\\'", expected: [{ type: 'invalid', pos: 0 }] },
|
|
];
|
|
|
|
const whiteSpaceTestCases: { input: string; expected: Token[] }[] = [
|
|
{ input: ' ', expected: [{ type: 'eof', pos: 1 }] },
|
|
{ input: ' ', expected: [{ type: 'eof', pos: 3 }] },
|
|
{ input: '\n', expected: [{ type: 'eof', pos: 1 }] },
|
|
{ input: ' \n', expected: [{ type: 'eof', pos: 2 }] },
|
|
{ input: ' ', expected: [{ type: 'eof', pos: 1 }] },
|
|
];
|
|
|
|
const complicatedTermTestCases: { input: string; expected: Token[] }[] = [
|
|
{
|
|
input: '5x',
|
|
expected: [
|
|
{ type: 'number', symbol: '5', pos: 0 },
|
|
{ type: 'iden', symbol: 'x', pos: 1 },
|
|
{ type: 'eof', pos: 2 },
|
|
],
|
|
},
|
|
{
|
|
input: '5*x',
|
|
expected: [
|
|
{ type: 'number', symbol: '5', pos: 0 },
|
|
{ type: '*', pos: 1 },
|
|
{ type: 'iden', symbol: 'x', pos: 2 },
|
|
{ type: 'eof', pos: 3 },
|
|
],
|
|
},
|
|
{
|
|
input: '5 * x',
|
|
expected: [
|
|
{ type: 'number', symbol: '5', pos: 0 },
|
|
{ type: '*', pos: 2 },
|
|
{ type: 'iden', symbol: 'x', pos: 4 },
|
|
{ type: 'eof', pos: 5 },
|
|
],
|
|
},
|
|
{
|
|
input: "(5 * 5 + 2) / 1.2 === 'foo'",
|
|
expected: [
|
|
{ type: '(', pos: 0 },
|
|
{ type: 'number', symbol: '5', pos: 1 },
|
|
{ type: '*', pos: 3 },
|
|
{ type: 'number', symbol: '5', pos: 5 },
|
|
{ type: '+', pos: 7 },
|
|
{ type: 'number', symbol: '2', pos: 9 },
|
|
{ type: ')', pos: 10 },
|
|
{ type: '/', pos: 12 },
|
|
{ type: 'number', symbol: '1.2', pos: 14 },
|
|
{ type: '===', pos: 18 },
|
|
{ type: 'string', symbol: "'foo'", pos: 22 },
|
|
{ type: 'eof', pos: 27 },
|
|
],
|
|
},
|
|
{
|
|
input: "(() => {console.log('foo'); return 1;})()",
|
|
expected: [
|
|
{ type: '(', pos: 0 },
|
|
{ type: '(', pos: 1 },
|
|
{ type: ')', pos: 2 },
|
|
{ type: 'invalid', pos: 4 },
|
|
],
|
|
},
|
|
{
|
|
input: "(function() {console.log('foo'); return 1;})()",
|
|
expected: [
|
|
{ type: '(', pos: 0 },
|
|
{ type: 'iden', symbol: 'function', pos: 1 },
|
|
{ type: '(', pos: 9 },
|
|
{ type: ')', pos: 10 },
|
|
{ type: '{', pos: 12 },
|
|
{ type: 'iden', symbol: 'console', pos: 13 },
|
|
{ type: '.', pos: 20 },
|
|
{ type: 'iden', symbol: 'log', pos: 21 },
|
|
{ type: '(', pos: 24 },
|
|
{ type: 'string', symbol: "'foo'", pos: 25 },
|
|
{ type: ')', pos: 30 },
|
|
{ type: 'invalid', pos: 31 },
|
|
],
|
|
},
|
|
{
|
|
input: "'ranged' === 'ranged'",
|
|
expected: [
|
|
{ type: 'string', symbol: "'ranged'", pos: 0 },
|
|
{ type: '===', pos: 9 },
|
|
{ type: 'string', symbol: "'ranged'", pos: 13 },
|
|
{ type: 'eof', pos: 21 },
|
|
],
|
|
},
|
|
];
|
|
|
|
it.each([
|
|
...singleOperatorTestCases,
|
|
...singleNumberTestCases,
|
|
...invalidNumberTestCases,
|
|
...singleIdentifierTestCases,
|
|
...invalidIdentifierTestCases,
|
|
...singleStringTestCases,
|
|
...invalidStringTestCases,
|
|
...whiteSpaceTestCases,
|
|
...complicatedTermTestCases,
|
|
])('lexes $input correctly', ({ input, expected }) => {
|
|
// when
|
|
const result = consume(new Lexer(input));
|
|
|
|
// then
|
|
expect(result).toEqual(expected);
|
|
});
|
|
});
|
|
|
|
function consume<T>(iterable: Iterable<T>): T[] {
|
|
const result: T[] = [];
|
|
for (const value of iterable) {
|
|
result.push(value);
|
|
}
|
|
return result;
|
|
}
|