Press n or j to go to the next uncovered block, b, p or k for the previous block.
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1556x 1033x 1033x 1033x 1033x 2471x 930x 4x 3x 3x 930x 926x 926x 926x 927x 927x 927x 927x 927x 927x 930x 1x 1x 930x 2591x 2x 2x 2x 2x 2x 1033x 1033x 1033x 1033x 1033x 1033x 1033x 1033x 817x 817x 817x 817x 817x 817x 817x 817x 817x 817x 216x 1032x 113x 113x 113x 113x 113x 113x 113x 103x 103x 103x 2x 2x 2x 2x 2x 1427x 1427x 1427x 1427x 1427x 1427x 1427x 1427x 1427x 2940x 2940x 2940x 1424x 2829x 1516x 1516x 2940x 1424x 1424x 1424x 1424x 1424x 1424x 1424x 1424x 1424x 1424x 2x 2x 2x 2x 2x 2x 2x 1516x 1516x 4x 4x 1512x 1512x 1512x 1512x 1512x 1512x 1512x 1512x 1516x 1516x 2x 2x 2x 2x 2x 1382x 1382x 1382x 1382x 1382x 1382x 1382x 1382x 1382x 1382x 1382x 1382x 1x 1x 1381x 1381x 1381x 1381x 1376x 1376x 1381x 1381x 1381x 1381x 1381x 1381x 1381x 1381x 1381x 2x 2x 2x 2x 2x 2992x 2992x 2992x 2992x 2992x 2992x 2992x 2992x 2992x 30963x 30963x 30963x 30963x 30963x 37x 30963x 180x 30926x 38x 30746x 20x 30708x 2991x 2991x 27972x 27972x 27972x 27972x 27972x 1x 1x 1x 2x 2x 2x 2x 2x 2x 36x 36x 36x 36x 36x 36x 150x 150x 150x 150x 36x 34x 34x 36x 36x 150x 114x 114x 114x 114x 114x 2x 2x 2x 2x 2x 2590x 2590x 2590x 2590x 2590x 2590x 2590x 2590x 2590x 2590x 10062x 10062x 7x 7x 10062x 7x 10055x 10048x 10048x 10048x 7458x 10048x 2590x 2590x 7472x 7472x 7472x 2590x 2590x 2x 2x 2588x 2588x 2588x 2x 2x 6220x 6220x 6220x 122x 120x 120x 120x 122x 122x 2x 2x 2x 122x 122x 122x 6220x | import * as e from '../../../errors.js';
const REGEX_MATCHER = /^[~^$*|]?=/;
const REGEX_CLOSING_BRACKET = /[\s\]]/;
const REGEX_ATTRIBUTE_FLAGS = /^[a-zA-Z]+/; // only `i` and `s` are valid today, but make it future-proof
const REGEX_COMBINATOR = /^(\+|~|>|\|\|)/;
const REGEX_PERCENTAGE = /^\d+(\.\d+)?%/;
const REGEX_NTH_OF =
/^(even|odd|\+?(\d+|\d*n(\s*[+-]\s*\d+)?)|-\d*n(\s*\+\s*\d+))((?=\s*[,)])|\s+of\s+)/;
const REGEX_WHITESPACE_OR_COLON = /[\s:]/;
const REGEX_LEADING_HYPHEN_OR_DIGIT = /-?\d/;
const REGEX_VALID_IDENTIFIER_CHAR = /[a-zA-Z0-9_-]/;
const REGEX_COMMENT_CLOSE = /\*\//;
const REGEX_HTML_COMMENT_CLOSE = /-->/;
/**
* @param {import('../index.js').Parser} parser
* @param {number} start
* @param {Array<import('#compiler').Attribute | import('#compiler').SpreadAttribute | import('#compiler').Directive>} attributes
* @returns {import('#compiler').Css.StyleSheet}
*/
export default function read_style(parser, start, attributes) {
const content_start = parser.index;
const children = read_body(parser, '</style');
const content_end = parser.index;
parser.read(/^<\/style\s*>/);
return {
type: 'StyleSheet',
start,
end: parser.index,
attributes,
children,
content: {
start: content_start,
end: content_end,
styles: parser.template.slice(content_start, content_end),
comment: null
}
};
}
/**
* @param {import('../index.js').Parser} parser
* @param {string} close
* @returns {any[]}
*/
function read_body(parser, close) {
/** @type {Array<import('#compiler').Css.Rule | import('#compiler').Css.Atrule>} */
const children = [];
while (parser.index < parser.template.length) {
allow_comment_or_whitespace(parser);
if (parser.match(close)) {
return children;
}
if (parser.match('@')) {
children.push(read_at_rule(parser));
} else {
children.push(read_rule(parser));
}
}
e.expected_token(parser.template.length, close);
}
/**
* @param {import('../index.js').Parser} parser
* @returns {import('#compiler').Css.Atrule}
*/
function read_at_rule(parser) {
const start = parser.index;
parser.eat('@', true);
const name = read_identifier(parser);
const prelude = read_value(parser);
/** @type {import('#compiler').Css.Block | null} */
let block = null;
if (parser.match('{')) {
// e.g. `@media (...) {...}`
block = read_block(parser);
} else {
// e.g. `@import '...'`
parser.eat(';', true);
}
return {
type: 'Atrule',
start,
end: parser.index,
name,
prelude,
block
};
}
/**
* @param {import('../index.js').Parser} parser
* @returns {import('#compiler').Css.Rule}
*/
function read_rule(parser) {
const start = parser.index;
return {
type: 'Rule',
prelude: read_selector_list(parser),
block: read_block(parser),
start,
end: parser.index,
metadata: {
parent_rule: null,
has_local_selectors: false,
is_global_block: false
}
};
}
/**
* @param {import('../index.js').Parser} parser
* @param {boolean} [inside_pseudo_class]
* @returns {import('#compiler').Css.SelectorList}
*/
function read_selector_list(parser, inside_pseudo_class = false) {
/** @type {import('#compiler').Css.ComplexSelector[]} */
const children = [];
allow_comment_or_whitespace(parser);
const start = parser.index;
while (parser.index < parser.template.length) {
children.push(read_selector(parser, inside_pseudo_class));
const end = parser.index;
parser.allow_whitespace();
if (inside_pseudo_class ? parser.match(')') : parser.match('{')) {
return {
type: 'SelectorList',
start,
end,
children
};
} else {
parser.eat(',', true);
allow_comment_or_whitespace(parser);
}
}
e.unexpected_eof(parser.template.length);
}
/**
* @param {import('../index.js').Parser} parser
* @param {boolean} [inside_pseudo_class]
* @returns {import('#compiler').Css.ComplexSelector}
*/
function read_selector(parser, inside_pseudo_class = false) {
const list_start = parser.index;
/** @type {import('#compiler').Css.RelativeSelector[]} */
const children = [];
/**
* @param {import('#compiler').Css.Combinator | null} combinator
* @param {number} start
* @returns {import('#compiler').Css.RelativeSelector}
*/
function create_selector(combinator, start) {
return {
type: 'RelativeSelector',
combinator,
selectors: [],
start,
end: -1,
metadata: {
is_global: false,
is_global_like: false,
scoped: false
}
};
}
/** @type {import('#compiler').Css.RelativeSelector} */
let relative_selector = create_selector(null, parser.index);
while (parser.index < parser.template.length) {
let start = parser.index;
if (parser.eat('&')) {
relative_selector.selectors.push({
type: 'NestingSelector',
name: '&',
start,
end: parser.index
});
} else if (parser.eat('*')) {
let name = '*';
if (parser.eat('|')) {
// * is the namespace (which we ignore)
name = read_identifier(parser);
}
relative_selector.selectors.push({
type: 'TypeSelector',
name,
start,
end: parser.index
});
} else if (parser.eat('#')) {
relative_selector.selectors.push({
type: 'IdSelector',
name: read_identifier(parser),
start,
end: parser.index
});
} else if (parser.eat('.')) {
relative_selector.selectors.push({
type: 'ClassSelector',
name: read_identifier(parser),
start,
end: parser.index
});
} else if (parser.eat('::')) {
relative_selector.selectors.push({
type: 'PseudoElementSelector',
name: read_identifier(parser),
start,
end: parser.index
});
// We read the inner selectors of a pseudo element to ensure it parses correctly,
// but we don't do anything with the result.
if (parser.eat('(')) {
read_selector_list(parser, true);
parser.eat(')', true);
}
} else if (parser.eat(':')) {
const name = read_identifier(parser);
/** @type {null | import('#compiler').Css.SelectorList} */
let args = null;
if (parser.eat('(')) {
args = read_selector_list(parser, true);
parser.eat(')', true);
}
relative_selector.selectors.push({
type: 'PseudoClassSelector',
name,
args,
start,
end: parser.index
});
} else if (parser.eat('[')) {
parser.allow_whitespace();
const name = read_identifier(parser);
parser.allow_whitespace();
/** @type {string | null} */
let value = null;
const matcher = parser.read(REGEX_MATCHER);
if (matcher) {
parser.allow_whitespace();
value = read_attribute_value(parser);
}
parser.allow_whitespace();
const flags = parser.read(REGEX_ATTRIBUTE_FLAGS);
parser.allow_whitespace();
parser.eat(']', true);
relative_selector.selectors.push({
type: 'AttributeSelector',
start,
end: parser.index,
name,
matcher,
value,
flags
});
} else if (inside_pseudo_class && parser.match_regex(REGEX_NTH_OF)) {
// nth of matcher must come before combinator matcher to prevent collision else the '+' in '+2n-1' would be parsed as a combinator
relative_selector.selectors.push({
type: 'Nth',
value: /**@type {string} */ (parser.read(REGEX_NTH_OF)),
start,
end: parser.index
});
} else if (parser.match_regex(REGEX_PERCENTAGE)) {
relative_selector.selectors.push({
type: 'Percentage',
value: /** @type {string} */ (parser.read(REGEX_PERCENTAGE)),
start,
end: parser.index
});
} else if (!parser.match_regex(REGEX_COMBINATOR)) {
let name = read_identifier(parser);
if (parser.eat('|')) {
// we ignore the namespace when trying to find matching element classes
name = read_identifier(parser);
}
relative_selector.selectors.push({
type: 'TypeSelector',
name,
start,
end: parser.index
});
}
const index = parser.index;
parser.allow_whitespace();
if (parser.match(',') || (inside_pseudo_class ? parser.match(')') : parser.match('{'))) {
// rewind, so we know whether to continue building the selector list
parser.index = index;
relative_selector.end = index;
children.push(relative_selector);
return {
type: 'ComplexSelector',
start: list_start,
end: index,
children,
metadata: {
rule: null,
used: false
}
};
}
parser.index = index;
const combinator = read_combinator(parser);
if (combinator) {
if (relative_selector.selectors.length === 0) {
if (!inside_pseudo_class) {
e.css_selector_invalid(start);
}
} else {
relative_selector.end = index;
children.push(relative_selector);
}
// ...and start a new one
relative_selector = create_selector(combinator, combinator.start);
parser.allow_whitespace();
if (parser.match(',') || (inside_pseudo_class ? parser.match(')') : parser.match('{'))) {
e.css_selector_invalid(parser.index);
}
}
}
e.unexpected_eof(parser.template.length);
}
/**
* @param {import('../index.js').Parser} parser
* @returns {import('#compiler').Css.Combinator | null}
*/
function read_combinator(parser) {
const start = parser.index;
parser.allow_whitespace();
const index = parser.index;
const name = parser.read(REGEX_COMBINATOR);
if (name) {
const end = parser.index;
parser.allow_whitespace();
return {
type: 'Combinator',
name,
start: index,
end
};
}
if (parser.index !== start) {
return {
type: 'Combinator',
name: ' ',
start,
end: parser.index
};
}
return null;
}
/**
* @param {import('../index.js').Parser} parser
* @returns {import('#compiler').Css.Block}
*/
function read_block(parser) {
const start = parser.index;
parser.eat('{', true);
/** @type {Array<import('#compiler').Css.Declaration | import('#compiler').Css.Rule | import('#compiler').Css.Atrule>} */
const children = [];
while (parser.index < parser.template.length) {
allow_comment_or_whitespace(parser);
if (parser.match('}')) {
break;
} else {
children.push(read_block_item(parser));
}
}
parser.eat('}', true);
return {
type: 'Block',
start,
end: parser.index,
children
};
}
/**
* Reads a declaration, rule or at-rule
*
* @param {import('../index.js').Parser} parser
* @returns {import('#compiler').Css.Declaration | import('#compiler').Css.Rule | import('#compiler').Css.Atrule}
*/
function read_block_item(parser) {
if (parser.match('@')) {
return read_at_rule(parser);
}
// read ahead to understand whether we're dealing with a declaration or a nested rule.
// this involves some duplicated work, but avoids a try-catch that would disguise errors
const start = parser.index;
read_value(parser);
const char = parser.template[parser.index];
parser.index = start;
return char === '{' ? read_rule(parser) : read_declaration(parser);
}
/**
* @param {import('../index.js').Parser} parser
* @returns {import('#compiler').Css.Declaration}
*/
function read_declaration(parser) {
const start = parser.index;
const property = parser.read_until(REGEX_WHITESPACE_OR_COLON);
parser.allow_whitespace();
parser.eat(':');
let index = parser.index;
parser.allow_whitespace();
const value = read_value(parser);
if (!value && !property.startsWith('--')) {
e.css_empty_declaration({ start, end: index });
}
const end = parser.index;
if (!parser.match('}')) {
parser.eat(';', true);
}
return {
type: 'Declaration',
start,
end,
property,
value
};
}
/**
* @param {import('../index.js').Parser} parser
* @returns {string}
*/
function read_value(parser) {
let value = '';
let escaped = false;
let in_url = false;
/** @type {null | '"' | "'"} */
let quote_mark = null;
while (parser.index < parser.template.length) {
const char = parser.template[parser.index];
if (escaped) {
value += '\\' + char;
escaped = false;
} else if (char === '\\') {
escaped = true;
} else if (char === quote_mark) {
quote_mark = null;
} else if (char === ')') {
in_url = false;
} else if (quote_mark === null && (char === '"' || char === "'")) {
quote_mark = char;
} else if (char === '(' && value.slice(-3) === 'url') {
in_url = true;
} else if ((char === ';' || char === '{' || char === '}') && !in_url && !quote_mark) {
return value.trim();
}
value += char;
parser.index++;
}
e.unexpected_eof(parser.template.length);
}
/**
* Read a property that may or may not be quoted, e.g.
* `foo` or `'foo bar'` or `"foo bar"`
* @param {import('../index.js').Parser} parser
*/
function read_attribute_value(parser) {
let value = '';
let escaped = false;
const quote_mark = parser.eat('"') ? '"' : parser.eat("'") ? "'" : null;
while (parser.index < parser.template.length) {
const char = parser.template[parser.index];
if (escaped) {
value += '\\' + char;
escaped = false;
} else if (char === '\\') {
escaped = true;
} else if (quote_mark ? char === quote_mark : REGEX_CLOSING_BRACKET.test(char)) {
if (quote_mark) {
parser.eat(quote_mark, true);
}
return value.trim();
} else {
value += char;
}
parser.index++;
}
e.unexpected_eof(parser.template.length);
}
/**
* https://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
* @param {import('../index.js').Parser} parser
*/
function read_identifier(parser) {
const start = parser.index;
let identifier = '';
if (parser.match('--') || parser.match_regex(REGEX_LEADING_HYPHEN_OR_DIGIT)) {
e.css_expected_identifier(start);
}
let escaped = false;
while (parser.index < parser.template.length) {
const char = parser.template[parser.index];
if (escaped) {
identifier += '\\' + char;
escaped = false;
} else if (char === '\\') {
escaped = true;
} else if (
/** @type {number} */ (char.codePointAt(0)) >= 160 ||
REGEX_VALID_IDENTIFIER_CHAR.test(char)
) {
identifier += char;
} else {
break;
}
parser.index++;
}
if (identifier === '') {
e.css_expected_identifier(start);
}
return identifier;
}
/** @param {import('../index.js').Parser} parser */
function allow_comment_or_whitespace(parser) {
parser.allow_whitespace();
while (parser.match('/*') || parser.match('<!--')) {
if (parser.eat('/*')) {
parser.read_until(REGEX_COMMENT_CLOSE);
parser.eat('*/', true);
}
if (parser.eat('<!--')) {
parser.read_until(REGEX_HTML_COMMENT_CLOSE);
parser.eat('-->', true);
}
parser.allow_whitespace();
}
}
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