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'use strict';
exports.__esModule = true;
exports.default = tokenize;
var _tokenTypes = require('./tokenTypes');
var t = _interopRequireWildcard(_tokenTypes);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
var wordEnd = /[ \n\t\r\(\)\*:;!&'"\+\|~>,=$^\[\]\\]|\/(?=\*)/g;
function tokenize(input) {
var tokens = [];
var css = input.css.valueOf();
var _css = css,
length = _css.length;
var offset = -1;
var line = 1;
var start = 0;
var end = 0;
var code = void 0,
content = void 0,
endColumn = void 0,
endLine = void 0,
escaped = void 0,
escapePos = void 0,
last = void 0,
lines = void 0,
next = void 0,
nextLine = void 0,
nextOffset = void 0,
quote = void 0,
tokenType = void 0;
function unclosed(what, fix) {
if (input.safe) {
// fyi: this is never set to true.
css += fix;
next = css.length - 1;
} else {
throw input.error('Unclosed ' + what, line, start - offset, start);
}
}
while (start < length) {
code = css.charCodeAt(start);
if (code === t.newline) {
offset = start;
line += 1;
}
switch (code) {
case t.newline:
case t.space:
case t.tab:
case t.cr:
case t.feed:
next = start;
do {
next += 1;
code = css.charCodeAt(next);
if (code === t.newline) {
offset = next;
line += 1;
}
} while (code === t.space || code === t.newline || code === t.tab || code === t.cr || code === t.feed);
tokenType = t.space;
endLine = line;
endColumn = start - offset;
end = next;
break;
case t.plus:
case t.greaterThan:
case t.tilde:
case t.pipe:
next = start;
do {
next += 1;
code = css.charCodeAt(next);
} while (code === t.plus || code === t.greaterThan || code === t.tilde || code === t.pipe);
tokenType = t.combinator;
endLine = line;
endColumn = start - offset;
end = next;
break;
// Consume these characters as single tokens.
case t.asterisk:
case t.ampersand:
case t.comma:
case t.equals:
case t.dollar:
case t.caret:
case t.openSquare:
case t.closeSquare:
case t.colon:
case t.semicolon:
case t.openParenthesis:
case t.closeParenthesis:
next = start;
tokenType = code;
endLine = line;
endColumn = start - offset;
end = next + 1;
break;
case t.singleQuote:
case t.doubleQuote:
quote = code === t.singleQuote ? "'" : '"';
next = start;
do {
escaped = false;
next = css.indexOf(quote, next + 1);
if (next === -1) {
unclosed('quote', quote);
}
escapePos = next;
while (css.charCodeAt(escapePos - 1) === t.backslash) {
escapePos -= 1;
escaped = !escaped;
}
} while (escaped);
tokenType = t.str;
endLine = line;
endColumn = start - offset;
end = next + 1;
break;
case t.backslash:
next = start;
escaped = true;
while (css.charCodeAt(next + 1) === t.backslash) {
next += 1;
escaped = !escaped;
}
code = css.charCodeAt(next + 1);
if (escaped && code !== t.slash && code !== t.space && code !== t.newline && code !== t.tab && code !== t.cr && code !== t.feed) {
next += 1;
}
tokenType = t.word;
endLine = line;
endColumn = next - offset;
end = next + 1;
break;
default:
if (code === t.slash && css.charCodeAt(start + 1) === t.asterisk) {
next = css.indexOf('*/', start + 2) + 1;
if (next === 0) {
unclosed('comment', '*/');
}
content = css.slice(start, next + 1);
lines = content.split('\n');
last = lines.length - 1;
if (last > 0) {
nextLine = line + last;
nextOffset = next - lines[last].length;
} else {
nextLine = line;
nextOffset = offset;
}
tokenType = t.comment;
line = nextLine;
endLine = nextLine;
endColumn = next - nextOffset;
} else {
wordEnd.lastIndex = start + 1;
wordEnd.test(css);
if (wordEnd.lastIndex === 0) {
next = css.length - 1;
} else {
next = wordEnd.lastIndex - 2;
}
tokenType = t.word;
endLine = line;
endColumn = next - offset;
}
end = next + 1;
break;
}
// Ensure that the token structure remains consistent
tokens.push([tokenType, // [0] Token type
line, // [1] Starting line
start - offset, // [2] Starting column
endLine, // [3] Ending line
endColumn, // [4] Ending column
start, // [5] Start position / Source index
end]);
// Reset offset for the next token
if (nextOffset) {
offset = nextOffset;
nextOffset = null;
}
start = end;
}
return tokens;
}
module.exports = exports['default'];
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