Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 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 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 4494x 2x 2x 2x 2x 2x 2x 2x 2x 12662x 12662x 12662x 12662x 12662x 12662x 12662x 12662x 12662x 12662x 12662x 12657x 12657x 12657x 12657x 2x 2x 2x 2x 2x 2x 2x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 17156x 280x 4x 4x 4x 4x 4x 4x 4x 4x 4x 280x 280x 17156x 17156x 17156x 17156x 17151x 147x 147x 147x 4898x 4898x 4898x 213x 213x 213x 4898x 4898x 4898x 4898x 2869x 2869x 2869x 2061x 2061x 2061x 2061x 1963x 2061x 1952x 2061x 2061x 2061x 144x 144x 144x 144x 144x 153x 153x 28x 28x 28x 28x 28x 2061x 35x 35x 2061x 2869x 4898x 147x 147x 147x 147x 17151x 4x 4x 17151x 17156x 17156x 2x 2x 2x 2x 2x 2x 295x 295x 295x 2162x 2162x 2162x 2162x 2162x 2162x 24x 24x 24x 24x 24x 24x 24x 24x 2162x 2162x 2162x 173x 2162x 41x 41x 41x 41x 41x 41x 2162x 2162x 2162x 295x 295x | /** @import { Comment, Program } from 'estree' */
/** @import { Node } from 'acorn' */
import * as acorn from 'acorn';
import { walk } from 'zimmerframe';
import { tsPlugin } from 'acorn-typescript';
import { locator } from '../../state.js';
const ParserWithTS = acorn.Parser.extend(tsPlugin({ allowSatisfies: true }));
/**
* @param {string} source
* @param {boolean} typescript
*/
export function parse(source, typescript) {
const parser = typescript ? ParserWithTS : acorn.Parser;
const { onComment, add_comments } = get_comment_handlers(source);
const ast = parser.parse(source, {
onComment,
sourceType: 'module',
ecmaVersion: 13,
locations: true
});
if (typescript) amend(source, ast);
add_comments(ast);
return /** @type {Program} */ (ast);
}
/**
* @param {string} source
* @param {boolean} typescript
* @param {number} index
* @returns {acorn.Expression & { leadingComments?: CommentWithLocation[]; trailingComments?: CommentWithLocation[]; }}
*/
export function parse_expression_at(source, typescript, index) {
const parser = typescript ? ParserWithTS : acorn.Parser;
const { onComment, add_comments } = get_comment_handlers(source);
const ast = parser.parseExpressionAt(source, index, {
onComment,
sourceType: 'module',
ecmaVersion: 13,
locations: true
});
if (typescript) amend(source, ast);
add_comments(ast);
return ast;
}
/**
* Acorn doesn't add comments to the AST by itself. This factory returns the capabilities
* to add them after the fact. They are needed in order to support `svelte-ignore` comments
* in JS code and so that `prettier-plugin-svelte` doesn't remove all comments when formatting.
* @param {string} source
*/
function get_comment_handlers(source) {
/**
* @typedef {Comment & {
* start: number;
* end: number;
* }} CommentWithLocation
*/
/** @type {CommentWithLocation[]} */
const comments = [];
return {
/**
* @param {boolean} block
* @param {string} value
* @param {number} start
* @param {number} end
*/
onComment: (block, value, start, end) => {
if (block && /\n/.test(value)) {
let a = start;
while (a > 0 && source[a - 1] !== '\n') a -= 1;
let b = a;
while (/[ \t]/.test(source[b])) b += 1;
const indentation = source.slice(a, b);
value = value.replace(new RegExp(`^${indentation}`, 'gm'), '');
}
comments.push({ type: block ? 'Block' : 'Line', value, start, end });
},
/** @param {acorn.Node & { leadingComments?: CommentWithLocation[]; trailingComments?: CommentWithLocation[]; }} ast */
add_comments(ast) {
if (comments.length === 0) return;
walk(ast, null, {
_(node, { next, path }) {
let comment;
while (comments[0] && comments[0].start < node.start) {
comment = /** @type {CommentWithLocation} */ (comments.shift());
(node.leadingComments ||= []).push(comment);
}
next();
if (comments[0]) {
const parent = /** @type {any} */ (path.at(-1));
if (parent === undefined || node.end !== parent.end) {
const slice = source.slice(node.end, comments[0].start);
const is_last_in_body =
((parent?.type === 'BlockStatement' || parent?.type === 'Program') &&
parent.body.indexOf(node) === parent.body.length - 1) ||
(parent?.type === 'ArrayExpression' &&
parent.elements.indexOf(node) === parent.elements.length - 1) ||
(parent?.type === 'ObjectExpression' &&
parent.properties.indexOf(node) === parent.properties.length - 1);
if (is_last_in_body) {
// Special case: There can be multiple trailing comments after the last node in a block,
// and they can be separated by newlines
let end = node.end;
while (comments.length) {
const comment = comments[0];
if (parent && comment.start >= parent.end) break;
(node.trailingComments ||= []).push(comment);
comments.shift();
end = comment.end;
}
} else if (node.end <= comments[0].start && /^[,) \t]*$/.test(slice)) {
node.trailingComments = [/** @type {CommentWithLocation} */ (comments.shift())];
}
}
}
}
});
// Special case: Trailing comments after the root node (which can only happen for expression tags or for Program nodes).
// Adding them ensures that we can later detect the end of the expression tag correctly.
if (comments.length > 0 && (comments[0].start >= ast.end || ast.type === 'Program')) {
(ast.trailingComments ||= []).push(...comments.splice(0));
}
}
};
}
/**
* Tidy up some stuff left behind by acorn-typescript
* @param {string} source
* @param {Node} node
*/
function amend(source, node) {
return walk(node, null, {
_(node, context) {
// @ts-expect-error
delete node.loc.start.index;
// @ts-expect-error
delete node.loc.end.index;
if (typeof node.loc?.end === 'number') {
const loc = locator(node.loc.end);
if (loc) {
node.loc.end = {
line: loc.line,
column: loc.column
};
}
}
if (
/** @type {any} */ (node).typeAnnotation &&
(node.end === undefined || node.end < node.start)
) {
// i think there might be a bug in acorn-typescript that prevents
// `end` from being assigned when there's a type annotation
let end = /** @type {any} */ (node).typeAnnotation.start;
while (/\s/.test(source[end - 1])) end -= 1;
node.end = end;
}
context.next();
}
});
}
|