import { Evaluator, Expression, Scope } from '../dist/index.js';

const e = new Evaluator();
e.import({ w: 123 });
const s = new Scope({ sin: 12 }, false);

describe('Analyze', () => {
    it('simple', () => {
        expect(e.analyze(Expression('  '), s)).toEqual([]);
        expect(e.analyze(Expression('a + b + @c'), s)).toEqual([['a'], ['b'], ['@c']]);
    });
    it('bad', () => {
        expect(e.analyze(Expression('a + '), s)).toEqual([]);
        expect(e.analyze(Expression('a.b.'), s)).toEqual([]);
        expect(() => e.analyze(Expression('a.b.'))).toThrow();
    });
    it('local', () => {
        expect(e.analyze(Expression('let a = 12; a + nil'), s)).toEqual([]);
        expect(e.analyze(Expression('let a = 12; a + nil'), s)).toEqual([]);
        expect(e.analyze(Expression('let a = 12; a + b'), s)).toEqual([['b']]);
    });
    it('repeat', () => {
        expect(e.analyze(Expression('a + b + a + a.b + b.c + a * a !. b'), s)).toEqual([
            ['a'],
            ['b'],
            ['a', 'b'],
            ['b', 'c'],
        ]);
    });
    it('prefixed', () => {
        expect(e.analyze(Expression('@@a + $b + c. $$ + $'), s)).toEqual([['@@a'], ['$b'], ['c', '$$'], ['$']]);
    });
    it('unicode', () => {
        expect(e.analyze(Expression('变量.属性 + 变量2[索引] + 函数()'), s)).toEqual([
            ['变量', '属性'],
            ['变量2'],
            ['索引'],
            ['函数'],
        ]);
    });
    it('access', () => {
        expect(e.analyze(Expression('a .b [1]+b'), s)).toEqual([['a', 'b'], ['b']]);
        expect(e.analyze(Expression('a. b["x"]+b'), s)).toEqual([['a', 'b'], ['b']]);
        expect(e.analyze(Expression('a.b[x] + b + c.12.3'), s)).toEqual([['a', 'b'], ['x'], ['b'], ['c', 12, 3]]);
    });
    it('with lib', () => {
        const e0 = new Evaluator();
        const exp = Expression('sin(x) + y::z.t()::cos() + w.123');
        expect(e.analyze(exp, s)).toEqual([['sin'], ['x'], ['z', 't'], ['y']]);
        expect(e0.analyze(exp, s)).toEqual([['sin'], ['x'], ['z', 't'], ['y'], ['w', 123]]);
        expect(e.analyze(exp)).toEqual([['x'], ['z', 't'], ['y']]);
        expect(e0.analyze(exp)).toEqual([['x'], ['z', 't'], ['y'], ['w', 123]]);
    });
});