1 | 'use strict';
|
2 |
|
3 | const configurationError = require('./configurationError');
|
4 | const isSingleLineString = require('./isSingleLineString');
|
5 | const isWhitespace = require('./isWhitespace');
|
6 |
|
7 |
|
8 |
|
9 |
|
10 |
|
11 |
|
12 |
|
13 |
|
14 |
|
15 |
|
16 |
|
17 |
|
18 |
|
19 |
|
20 |
|
21 |
|
22 |
|
23 |
|
24 |
|
25 |
|
26 |
|
27 |
|
28 |
|
29 |
|
30 |
|
31 |
|
32 |
|
33 |
|
34 |
|
35 |
|
36 |
|
37 |
|
38 |
|
39 |
|
40 |
|
41 |
|
42 |
|
43 |
|
44 |
|
45 |
|
46 |
|
47 |
|
48 |
|
49 |
|
50 |
|
51 |
|
52 |
|
53 |
|
54 |
|
55 |
|
56 |
|
57 |
|
58 |
|
59 |
|
60 |
|
61 |
|
62 |
|
63 |
|
64 |
|
65 | module.exports = function(targetWhitespace, expectation, messages) {
|
66 |
|
67 |
|
68 |
|
69 | |
70 |
|
71 |
|
72 |
|
73 |
|
74 |
|
75 |
|
76 |
|
77 |
|
78 |
|
79 | let activeArgs;
|
80 |
|
81 | |
82 |
|
83 |
|
84 |
|
85 | function before({
|
86 | source,
|
87 | index,
|
88 | err,
|
89 | errTarget,
|
90 | lineCheckStr,
|
91 | onlyOneChar = false,
|
92 | allowIndentation = false,
|
93 | }) {
|
94 | activeArgs = {
|
95 | source,
|
96 | index,
|
97 | err,
|
98 | errTarget,
|
99 | onlyOneChar,
|
100 | allowIndentation,
|
101 | };
|
102 |
|
103 | switch (expectation) {
|
104 | case 'always':
|
105 | expectBefore();
|
106 | break;
|
107 | case 'never':
|
108 | rejectBefore();
|
109 | break;
|
110 | case 'always-single-line':
|
111 | if (!isSingleLineString(lineCheckStr || source)) {
|
112 | return;
|
113 | }
|
114 |
|
115 | expectBefore(messages.expectedBeforeSingleLine);
|
116 | break;
|
117 | case 'never-single-line':
|
118 | if (!isSingleLineString(lineCheckStr || source)) {
|
119 | return;
|
120 | }
|
121 |
|
122 | rejectBefore(messages.rejectedBeforeSingleLine);
|
123 | break;
|
124 | case 'always-multi-line':
|
125 | if (isSingleLineString(lineCheckStr || source)) {
|
126 | return;
|
127 | }
|
128 |
|
129 | expectBefore(messages.expectedBeforeMultiLine);
|
130 | break;
|
131 | case 'never-multi-line':
|
132 | if (isSingleLineString(lineCheckStr || source)) {
|
133 | return;
|
134 | }
|
135 |
|
136 | rejectBefore(messages.rejectedBeforeMultiLine);
|
137 | break;
|
138 | default:
|
139 | throw configurationError(`Unknown expectation "${expectation}"`);
|
140 | }
|
141 | }
|
142 |
|
143 | |
144 |
|
145 |
|
146 |
|
147 | function after({ source, index, err, errTarget, lineCheckStr, onlyOneChar = false }) {
|
148 | activeArgs = { source, index, err, errTarget, onlyOneChar };
|
149 |
|
150 | switch (expectation) {
|
151 | case 'always':
|
152 | expectAfter();
|
153 | break;
|
154 | case 'never':
|
155 | rejectAfter();
|
156 | break;
|
157 | case 'always-single-line':
|
158 | if (!isSingleLineString(lineCheckStr || source)) {
|
159 | return;
|
160 | }
|
161 |
|
162 | expectAfter(messages.expectedAfterSingleLine);
|
163 | break;
|
164 | case 'never-single-line':
|
165 | if (!isSingleLineString(lineCheckStr || source)) {
|
166 | return;
|
167 | }
|
168 |
|
169 | rejectAfter(messages.rejectedAfterSingleLine);
|
170 | break;
|
171 | case 'always-multi-line':
|
172 | if (isSingleLineString(lineCheckStr || source)) {
|
173 | return;
|
174 | }
|
175 |
|
176 | expectAfter(messages.expectedAfterMultiLine);
|
177 | break;
|
178 | case 'never-multi-line':
|
179 | if (isSingleLineString(lineCheckStr || source)) {
|
180 | return;
|
181 | }
|
182 |
|
183 | rejectAfter(messages.rejectedAfterMultiLine);
|
184 | break;
|
185 | default:
|
186 | throw configurationError(`Unknown expectation "${expectation}"`);
|
187 | }
|
188 | }
|
189 |
|
190 | |
191 |
|
192 |
|
193 | function beforeAllowingIndentation(obj) {
|
194 | before({ ...obj, allowIndentation: true });
|
195 | }
|
196 |
|
197 | |
198 |
|
199 |
|
200 | function expectBefore(messageFunc = messages.expectedBefore) {
|
201 | if (activeArgs.allowIndentation) {
|
202 | expectBeforeAllowingIndentation(messageFunc);
|
203 |
|
204 | return;
|
205 | }
|
206 |
|
207 | const _activeArgs = activeArgs;
|
208 | const source = _activeArgs.source;
|
209 | const index = _activeArgs.index;
|
210 |
|
211 | const oneCharBefore = source[index - 1];
|
212 | const twoCharsBefore = source[index - 2];
|
213 |
|
214 | if (!isValue(oneCharBefore)) {
|
215 | return;
|
216 | }
|
217 |
|
218 | if (targetWhitespace === 'space' && oneCharBefore === ' ') {
|
219 | if (activeArgs.onlyOneChar || !isWhitespace(twoCharsBefore)) {
|
220 | return;
|
221 | }
|
222 | }
|
223 |
|
224 | activeArgs.err(messageFunc(activeArgs.errTarget ? activeArgs.errTarget : source[index]));
|
225 | }
|
226 |
|
227 | |
228 |
|
229 |
|
230 | function expectBeforeAllowingIndentation(messageFunc = messages.expectedBefore) {
|
231 | const _activeArgs2 = activeArgs;
|
232 | const source = _activeArgs2.source;
|
233 | const index = _activeArgs2.index;
|
234 | const err = _activeArgs2.err;
|
235 |
|
236 | const expectedChar = (function() {
|
237 | if (targetWhitespace === 'newline') {
|
238 | return '\n';
|
239 | }
|
240 | })();
|
241 | let i = index - 1;
|
242 |
|
243 | while (source[i] !== expectedChar) {
|
244 | if (source[i] === '\t' || source[i] === ' ') {
|
245 | i--;
|
246 | continue;
|
247 | }
|
248 |
|
249 | err(messageFunc(activeArgs.errTarget ? activeArgs.errTarget : source[index]));
|
250 |
|
251 | return;
|
252 | }
|
253 | }
|
254 |
|
255 | |
256 |
|
257 |
|
258 | function rejectBefore(messageFunc = messages.rejectedBefore) {
|
259 | const _activeArgs3 = activeArgs;
|
260 | const source = _activeArgs3.source;
|
261 | const index = _activeArgs3.index;
|
262 |
|
263 | const oneCharBefore = source[index - 1];
|
264 |
|
265 | if (isValue(oneCharBefore) && isWhitespace(oneCharBefore)) {
|
266 | activeArgs.err(messageFunc(activeArgs.errTarget ? activeArgs.errTarget : source[index]));
|
267 | }
|
268 | }
|
269 |
|
270 | |
271 |
|
272 |
|
273 | function afterOneOnly(obj) {
|
274 | after({ ...obj, onlyOneChar: true });
|
275 | }
|
276 |
|
277 | |
278 |
|
279 |
|
280 | function expectAfter(messageFunc = messages.expectedAfter) {
|
281 | const _activeArgs4 = activeArgs;
|
282 | const source = _activeArgs4.source;
|
283 | const index = _activeArgs4.index;
|
284 |
|
285 | const oneCharAfter = source[index + 1];
|
286 | const twoCharsAfter = source[index + 2];
|
287 |
|
288 | if (!isValue(oneCharAfter)) {
|
289 | return;
|
290 | }
|
291 |
|
292 | if (targetWhitespace === 'newline') {
|
293 |
|
294 | if (oneCharAfter === '\r' && twoCharsAfter === '\n') {
|
295 | if (activeArgs.onlyOneChar || !isWhitespace(source[index + 3])) {
|
296 | return;
|
297 | }
|
298 | }
|
299 |
|
300 |
|
301 | if (oneCharAfter === '\n') {
|
302 | if (activeArgs.onlyOneChar || !isWhitespace(twoCharsAfter)) {
|
303 | return;
|
304 | }
|
305 | }
|
306 | }
|
307 |
|
308 | if (targetWhitespace === 'space' && oneCharAfter === ' ') {
|
309 | if (activeArgs.onlyOneChar || !isWhitespace(twoCharsAfter)) {
|
310 | return;
|
311 | }
|
312 | }
|
313 |
|
314 | activeArgs.err(messageFunc(activeArgs.errTarget ? activeArgs.errTarget : source[index]));
|
315 | }
|
316 |
|
317 | |
318 |
|
319 |
|
320 | function rejectAfter(messageFunc = messages.rejectedAfter) {
|
321 | const _activeArgs5 = activeArgs;
|
322 | const source = _activeArgs5.source;
|
323 | const index = _activeArgs5.index;
|
324 |
|
325 | const oneCharAfter = source[index + 1];
|
326 |
|
327 | if (isValue(oneCharAfter) && isWhitespace(oneCharAfter)) {
|
328 | activeArgs.err(messageFunc(activeArgs.errTarget ? activeArgs.errTarget : source[index]));
|
329 | }
|
330 | }
|
331 |
|
332 | return {
|
333 | before,
|
334 | beforeAllowingIndentation,
|
335 | after,
|
336 | afterOneOnly,
|
337 | };
|
338 | };
|
339 |
|
340 |
|
341 |
|
342 |
|
343 | function isValue(x) {
|
344 | return x !== undefined && x !== null;
|
345 | }
|