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refactor(Lexer): code cleanup

This commit is contained in:
Victor Berchet 2016-07-22 16:50:54 -07:00
parent b652a7fc9f
commit 54f2edbb90
1 changed files with 28 additions and 40 deletions
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68
modules/@angular/compiler/test/expression_parser/lexer_spec.ts
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@ -59,15 +59,15 @@ function expectErrorToken(token: Token, index: any, message: string) {
}
export function main() {
describe('lexer', function() {
describe('token', function() {
it('should tokenize a simple identifier', function() {
describe('lexer', () => {
describe('token', () => {
it('should tokenize a simple identifier', () => {
var tokens: number[] = lex('j');
expect(tokens.length).toEqual(1);
expectIdentifierToken(tokens[0], 0, 'j');
});
it('should tokenize a dotted identifier', function() {
it('should tokenize a dotted identifier', () => {
var tokens: number[] = lex('j.k');
expect(tokens.length).toEqual(3);
expectIdentifierToken(tokens[0], 0, 'j');
@ -75,35 +75,35 @@ export function main() {
expectIdentifierToken(tokens[2], 2, 'k');
});
it('should tokenize an operator', function() {
it('should tokenize an operator', () => {
var tokens: number[] = lex('j-k');
expect(tokens.length).toEqual(3);
expectOperatorToken(tokens[1], 1, '-');
});
it('should tokenize an indexed operator', function() {
it('should tokenize an indexed operator', () => {
var tokens: number[] = lex('j[k]');
expect(tokens.length).toEqual(4);
expectCharacterToken(tokens[1], 1, '[');
expectCharacterToken(tokens[3], 3, ']');
});
it('should tokenize numbers', function() {
it('should tokenize numbers', () => {
var tokens: number[] = lex('88');
expect(tokens.length).toEqual(1);
expectNumberToken(tokens[0], 0, 88);
});
it('should tokenize numbers within index ops',
function() { expectNumberToken(lex('a[22]')[2], 2, 22); });
() => { expectNumberToken(lex('a[22]')[2], 2, 22); });
it('should tokenize simple quoted strings',
function() { expectStringToken(lex('"a"')[0], 0, 'a'); });
() => { expectStringToken(lex('"a"')[0], 0, 'a'); });
it('should tokenize quoted strings with escaped quotes',
function() { expectStringToken(lex('"a\\""')[0], 0, 'a"'); });
() => { expectStringToken(lex('"a\\""')[0], 0, 'a"'); });
it('should tokenize a string', function() {
it('should tokenize a string', () => {
var tokens: Token[] = lex('j-a.bc[22]+1.3|f:\'a\\\'c\':"d\\"e"');
expectIdentifierToken(tokens[0], 0, 'j');
expectOperatorToken(tokens[1], 1, '-');
@ -123,13 +123,13 @@ export function main() {
expectStringToken(tokens[15], 24, 'd"e');
});
it('should tokenize undefined', function() {
it('should tokenize undefined', () => {
var tokens: Token[] = lex('undefined');
expectKeywordToken(tokens[0], 0, 'undefined');
expect(tokens[0].isKeywordUndefined()).toBe(true);
});
it('should ignore whitespace', function() {
it('should ignore whitespace', () => {
var tokens: Token[] = lex('a \t \n \r b');
expectIdentifierToken(tokens[0], 0, 'a');
expectIdentifierToken(tokens[1], 8, 'b');
@ -149,13 +149,13 @@ export function main() {
expect(tokens[0].toString()).toEqual('"\n\f\r\t\v\u00A0');
});
it('should tokenize unicode', function() {
it('should tokenize unicode', () => {
var tokens: Token[] = lex('"\\u00A0"');
expect(tokens.length).toEqual(1);
expect(tokens[0].toString()).toEqual('\u00a0');
});
it('should tokenize relation', function() {
it('should tokenize relation', () => {
var tokens: Token[] = lex('! == != < > <= >= === !==');
expectOperatorToken(tokens[0], 0, '!');
expectOperatorToken(tokens[1], 2, '==');
@ -168,7 +168,7 @@ export function main() {
expectOperatorToken(tokens[8], 22, '!==');
});
it('should tokenize statements', function() {
it('should tokenize statements', () => {
var tokens: Token[] = lex('a;b;');
expectIdentifierToken(tokens[0], 0, 'a');
expectCharacterToken(tokens[1], 1, ';');
@ -176,19 +176,19 @@ export function main() {
expectCharacterToken(tokens[3], 3, ';');
});
it('should tokenize function invocation', function() {
it('should tokenize function invocation', () => {
var tokens: Token[] = lex('a()');
expectIdentifierToken(tokens[0], 0, 'a');
expectCharacterToken(tokens[1], 1, '(');
expectCharacterToken(tokens[2], 2, ')');
});
it('should tokenize simple method invocations', function() {
it('should tokenize simple method invocations', () => {
var tokens: Token[] = lex('a.method()');
expectIdentifierToken(tokens[2], 2, 'method');
});
it('should tokenize method invocation', function() {
it('should tokenize method invocation', () => {
var tokens: Token[] = lex('a.b.c (d) - e.f()');
expectIdentifierToken(tokens[0], 0, 'a');
expectCharacterToken(tokens[1], 1, '.');
@ -206,20 +206,17 @@ export function main() {
expectCharacterToken(tokens[13], 16, ')');
});
it('should tokenize number', function() {
var tokens: Token[] = lex('0.5');
expectNumberToken(tokens[0], 0, 0.5);
});
it('should tokenize number', () => { expectNumberToken(lex('0.5')[0], 0, 0.5); });
it('should tokenize number with exponent', function() {
var tokens: Token[] = lex('0.5E-10');
it('should tokenize number with exponent', () => {
let tokens: Token[] = lex('0.5E-10');
expect(tokens.length).toEqual(1);
expectNumberToken(tokens[0], 0, 0.5E-10);
tokens = lex('0.5E+10');
expectNumberToken(tokens[0], 0, 0.5E+10);
});
it('should return exception for invalid exponent', function() {
it('should return exception for invalid exponent', () => {
expectErrorToken(
lex('0.5E-')[0], 4, 'Lexer Error: Invalid exponent at column 4 in expression [0.5E-]');
@ -228,27 +225,18 @@ export function main() {
'Lexer Error: Invalid exponent at column 4 in expression [0.5E-A]');
});
it('should tokenize number starting with a dot', function() {
var tokens: Token[] = lex('.5');
expectNumberToken(tokens[0], 0, 0.5);
});
it('should tokenize number starting with a dot',
() => { expectNumberToken(lex('.5')[0], 0, 0.5); });
it('should throw error on invalid unicode', function() {
it('should throw error on invalid unicode', () => {
expectErrorToken(
lex('\'\\u1\'\'bla\'')[0], 2,
'Lexer Error: Invalid unicode escape [\\u1\'\'b] at column 2 in expression [\'\\u1\'\'bla\']');
});
it('should tokenize hash as operator', function() {
var tokens: Token[] = lex('#');
expectOperatorToken(tokens[0], 0, '#');
});
it('should tokenize ?. as operator', () => {
var tokens: Token[] = lex('?.');
expectOperatorToken(tokens[0], 0, '?.');
});
it('should tokenize hash as operator', () => { expectOperatorToken(lex('#')[0], 0, '#'); });
it('should tokenize ?. as operator', () => { expectOperatorToken(lex('?.')[0], 0, '?.'); });
});
});
}