"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.importAttributesOrAssertions = exports.importAttributes = exports.importAssertions = void 0;
var _acorn = _interopRequireWildcard(require("acorn"));
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
const leftCurlyBrace = "{".charCodeAt(0);
const space = " ".charCodeAt(0);
const withKeyword = "with";
const assertKeyword = "assert";
const FUNC_STATEMENT = 1,
FUNC_HANGING_STATEMENT = 2,
FUNC_NULLABLE_ID = 4;
const importAttributes = exports.importAttributes = plugin({
keyword: "with"
});
const importAssertions = exports.importAssertions = plugin({
keyword: "assert"
});
const importAttributesOrAssertions = exports.importAttributesOrAssertions = plugin({
keyword: "with-assert"
});
function plugin(options) {
return function (Parser) {
return pluginImpl(options, Parser);
};
}
function pluginImpl(options, Parser) {
// Use supplied version acorn version if present, to avoid
// reference mismatches due to different acorn versions. This
// allows this plugin to be used with Rollup which supplies
// its own internal version of acorn and thereby sidesteps
// the package manager.
const acorn = Parser.acorn || _acorn;
const {
tokTypes: tt,
TokenType
} = acorn;
const {
keyword
} = options;
const isWithKeyword = keyword.includes(withKeyword);
const isAssertKeyword = keyword.includes(assertKeyword);
const isWithOrAssertKeyword = isWithKeyword && isAssertKeyword;
return class extends Parser {
constructor(...args) {
super(...args);
this.withToken = isWithKeyword && new TokenType(withKeyword);
this.assertToken = isAssertKeyword && new TokenType(assertKeyword);
}
_codeAt(i) {
return this.input.charCodeAt(i);
}
_eat(t) {
if (this.type !== t) {
this.unexpected();
}
this.next();
}
_matchKeywordToken() {
return isWithOrAssertKeyword && (this.type === this.withToken || this.type === this.assertToken) || isWithKeyword && this.type === this.withToken || isAssertKeyword && this.type === this.assertToken;
}
_getProperty() {
if (isWithOrAssertKeyword) {
return this.type === this.withToken ? "attributes" : "assertions";
}
return isWithKeyword ? "attributes" : "assertions";
}
readToken(code) {
let i = 0;
let keyword;
let token;
if (isWithOrAssertKeyword) {
if (this.input.slice(this.pos, this.pos + withKeyword.length) === withKeyword) {
keyword = withKeyword;
token = this.withToken;
} else if (this.input.slice(this.pos, this.pos + assertKeyword.length) === assertKeyword) {
keyword = assertKeyword;
token = this.assertToken;
} else {
return super.readToken(code);
}
i += keyword.length;
} else {
keyword = isWithKeyword ? withKeyword : assertKeyword;
token = isWithKeyword ? this.withToken : this.assertToken;
for (; i < keyword.length; i++) {
if (this._codeAt(this.pos + i) !== keyword.charCodeAt(i)) {
return super.readToken(code);
}
}
}
// ensure that the keyword is at the correct location
// ie `with{...` or `with {...`
for (;; i++) {
if (this._codeAt(this.pos + i) === leftCurlyBrace) {
// Found '{'
break;
} else if (this._codeAt(this.pos + i) === space) {
// white space is allowed between `with` and `{`, so continue.
continue;
} else {
return super.readToken(code);
}
}
// If we're inside a dynamic import expression we'll parse
// the `with` keyword as a standard object property name
// ie `import(""./foo.json", { with: { type: "json" } })`
if (this.type.label === "{") {
return super.readToken(code);
}
this.pos += keyword.length;
return this.finishToken(token);
}
parseDynamicImport(node) {
this.next(); // skip `(`
// Parse node.source.
node.source = this.parseMaybeAssign();
if (this.eat(tt.comma)) {
const expr = this.parseExpression();
node.arguments = [expr];
}
this._eat(tt.parenR);
return this.finishNode(node, "ImportExpression");
}
// ported from acorn/src/statement.js pp.parseExport
parseExport(node, exports) {
this.next();
// export * from '...'
if (this.eat(tt.star)) {
if (this.options.ecmaVersion >= 11) {
if (this.eatContextual("as")) {
node.exported = this.parseIdent(true);
this.checkExport(exports, node.exported.name, this.lastTokStart);
} else {
node.exported = null;
}
}
this.expectContextual("from");
if (this.type !== tt.string) {
this.unexpected();
}
node.source = this.parseExprAtom();
if (this._matchKeywordToken()) {
const property = this._getProperty();
this.next();
const attributes = this.parseImportAttributes();
if (attributes) {
node[property] = attributes;
}
}
this.semicolon();
return this.finishNode(node, "ExportAllDeclaration");
}
if (this.eat(tt._default)) {
// export default ...
this.checkExport(exports, "default", this.lastTokStart);
var isAsync;
if (this.type === tt._function || (isAsync = this.isAsyncFunction())) {
var fNode = this.startNode();
this.next();
if (isAsync) {
this.next();
}
node.declaration = this.parseFunction(fNode, FUNC_STATEMENT | FUNC_NULLABLE_ID, false, isAsync);
} else if (this.type === tt._class) {
var cNode = this.startNode();
node.declaration = this.parseClass(cNode, "nullableID");
} else {
node.declaration = this.parseMaybeAssign();
this.semicolon();
}
return this.finishNode(node, "ExportDefaultDeclaration");
}
// export var|const|let|function|class ...
if (this.shouldParseExportStatement()) {
node.declaration = this.parseStatement(null);
if (node.declaration.type === "VariableDeclaration") {
this.checkVariableExport(exports, node.declaration.declarations);
} else {
this.checkExport(exports, node.declaration.id.name, node.declaration.id.start);
}
node.specifiers = [];
node.source = null;
} else {
// export { x, y as z } [from '...']
node.declaration = null;
node.specifiers = this.parseExportSpecifiers(exports);
if (this.eatContextual("from")) {
if (this.type !== tt.string) {
this.unexpected();
}
node.source = this.parseExprAtom();
if (this._matchKeywordToken()) {
const property = this._getProperty();
this.next();
const attributes = this.parseImportAttributes();
if (attributes) {
node[property] = attributes;
}
}
} else {
for (var i = 0, list = node.specifiers; i < list.length; i += 1) {
// check for keywords used as local names
var spec = list[i];
this.checkUnreserved(spec.local);
// check if export is defined
this.checkLocalExport(spec.local);
}
node.source = null;
}
this.semicolon();
}
return this.finishNode(node, "ExportNamedDeclaration");
}
parseImport(node) {
this.next();
// import '...'
if (this.type === tt.string) {
node.specifiers = [];
node.source = this.parseExprAtom();
} else {
node.specifiers = this.parseImportSpecifiers();
this.expectContextual("from");
node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected();
}
if (this._matchKeywordToken()) {
const property = this._getProperty();
this.next();
const attributes = this.parseImportAttributes();
if (attributes) {
node[property] = attributes;
}
}
this.semicolon();
return this.finishNode(node, "ImportDeclaration");
}
parseImportAttributes() {
this._eat(tt.braceL);
const attrs = this.parsewithEntries();
this._eat(tt.braceR);
return attrs;
}
parsewithEntries() {
const attrs = [];
const attrNames = new Set();
do {
if (this.type === tt.braceR) {
break;
}
const node = this.startNode();
// parse withionKey : IdentifierName, StringLiteral
let withionKeyNode;
if (this.type === tt.string) {
withionKeyNode = this.parseLiteral(this.value);
} else {
withionKeyNode = this.parseIdent(true);
}
this.next();
node.key = withionKeyNode;
// check if we already have an entry for an attribute
// if a duplicate entry is found, throw an error
// for now this logic will come into play only when someone declares `type` twice
if (attrNames.has(node.key.name)) {
this.raise(this.pos, "Duplicated key in attributes");
}
attrNames.add(node.key.name);
if (this.type !== tt.string) {
this.raise(this.pos, "Only string is supported as an attribute value");
}
node.value = this.parseLiteral(this.value);
attrs.push(this.finishNode(node, "ImportAttribute"));
} while (this.eat(tt.comma));
return attrs;
}
};
}