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-rw-r--r--vanilla/node_modules/css-tree/lib/lexer/generic-urange.js151
1 files changed, 0 insertions, 151 deletions
diff --git a/vanilla/node_modules/css-tree/lib/lexer/generic-urange.js b/vanilla/node_modules/css-tree/lib/lexer/generic-urange.js
deleted file mode 100644
index d878409..0000000
--- a/vanilla/node_modules/css-tree/lib/lexer/generic-urange.js
+++ /dev/null
@@ -1,151 +0,0 @@
-import {
- isHexDigit,
- cmpChar,
- Ident,
- Delim,
- Number as NumberToken,
- Dimension
-} from '../tokenizer/index.js';
-
-const PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
-const HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
-const QUESTIONMARK = 0x003F; // U+003F QUESTION MARK (?)
-const U = 0x0075; // U+0075 LATIN SMALL LETTER U (u)
-
-function isDelim(token, code) {
- return token !== null && token.type === Delim && token.value.charCodeAt(0) === code;
-}
-
-function startsWith(token, code) {
- return token.value.charCodeAt(0) === code;
-}
-
-function hexSequence(token, offset, allowDash) {
- let hexlen = 0;
-
- for (let pos = offset; pos < token.value.length; pos++) {
- const code = token.value.charCodeAt(pos);
-
- if (code === HYPHENMINUS && allowDash && hexlen !== 0) {
- hexSequence(token, offset + hexlen + 1, false);
- return 6; // dissallow following question marks
- }
-
- if (!isHexDigit(code)) {
- return 0; // not a hex digit
- }
-
- if (++hexlen > 6) {
- return 0; // too many hex digits
- };
- }
-
- return hexlen;
-}
-
-function withQuestionMarkSequence(consumed, length, getNextToken) {
- if (!consumed) {
- return 0; // nothing consumed
- }
-
- while (isDelim(getNextToken(length), QUESTIONMARK)) {
- if (++consumed > 6) {
- return 0; // too many question marks
- }
-
- length++;
- }
-
- return length;
-}
-
-// https://drafts.csswg.org/css-syntax/#urange
-// Informally, the <urange> production has three forms:
-// U+0001
-// Defines a range consisting of a single code point, in this case the code point "1".
-// U+0001-00ff
-// Defines a range of codepoints between the first and the second value, in this case
-// the range between "1" and "ff" (255 in decimal) inclusive.
-// U+00??
-// Defines a range of codepoints where the "?" characters range over all hex digits,
-// in this case defining the same as the value U+0000-00ff.
-// In each form, a maximum of 6 digits is allowed for each hexadecimal number (if you treat "?" as a hexadecimal digit).
-//
-// <urange> =
-// u '+' <ident-token> '?'* |
-// u <dimension-token> '?'* |
-// u <number-token> '?'* |
-// u <number-token> <dimension-token> |
-// u <number-token> <number-token> |
-// u '+' '?'+
-export default function urange(token, getNextToken) {
- let length = 0;
-
- // should start with `u` or `U`
- if (token === null || token.type !== Ident || !cmpChar(token.value, 0, U)) {
- return 0;
- }
-
- token = getNextToken(++length);
- if (token === null) {
- return 0;
- }
-
- // u '+' <ident-token> '?'*
- // u '+' '?'+
- if (isDelim(token, PLUSSIGN)) {
- token = getNextToken(++length);
- if (token === null) {
- return 0;
- }
-
- if (token.type === Ident) {
- // u '+' <ident-token> '?'*
- return withQuestionMarkSequence(hexSequence(token, 0, true), ++length, getNextToken);
- }
-
- if (isDelim(token, QUESTIONMARK)) {
- // u '+' '?'+
- return withQuestionMarkSequence(1, ++length, getNextToken);
- }
-
- // Hex digit or question mark is expected
- return 0;
- }
-
- // u <number-token> '?'*
- // u <number-token> <dimension-token>
- // u <number-token> <number-token>
- if (token.type === NumberToken) {
- const consumedHexLength = hexSequence(token, 1, true);
- if (consumedHexLength === 0) {
- return 0;
- }
-
- token = getNextToken(++length);
- if (token === null) {
- // u <number-token> <eof>
- return length;
- }
-
- if (token.type === Dimension || token.type === NumberToken) {
- // u <number-token> <dimension-token>
- // u <number-token> <number-token>
- if (!startsWith(token, HYPHENMINUS) || !hexSequence(token, 1, false)) {
- return 0;
- }
-
- return length + 1;
- }
-
- // u <number-token> '?'*
- return withQuestionMarkSequence(consumedHexLength, length, getNextToken);
- }
-
- // u <dimension-token> '?'*
- if (token.type === Dimension) {
- return withQuestionMarkSequence(hexSequence(token, 1, true), ++length, getNextToken);
- }
-
- return 0;
-};