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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _types = require("../tokenizer/types");
var _parseError = require("../parse-error");
const PlaceholderErrors = (0, _parseError.ParseErrorEnum)`placeholders`({
ClassNameIsRequired: "A class name is required.",
UnexpectedSpace: "Unexpected space in placeholder."
});
var _default = superClass => class PlaceholdersParserMixin extends superClass {
parsePlaceholder(expectedNode) {
if (this.match(142)) {
const node = this.startNode();
this.next();
this.assertNoSpace();
node.name = super.parseIdentifier(true);
this.assertNoSpace();
this.expect(142);
return this.finishPlaceholder(node, expectedNode);
}
}
finishPlaceholder(node, expectedNode) {
const isFinished = !!(node.expectedNode && node.type === "Placeholder");
node.expectedNode = expectedNode;
return isFinished ? node : this.finishNode(node, "Placeholder");
}
getTokenFromCode(code) {
if (code === 37 && this.input.charCodeAt(this.state.pos + 1) === 37) {
this.finishOp(142, 2);
} else {
super.getTokenFromCode(code);
}
}
parseExprAtom(refExpressionErrors) {
return this.parsePlaceholder("Expression") || super.parseExprAtom(refExpressionErrors);
}
parseIdentifier(liberal) {
return this.parsePlaceholder("Identifier") || super.parseIdentifier(liberal);
}
checkReservedWord(word, startLoc, checkKeywords, isBinding) {
if (word !== undefined) {
super.checkReservedWord(word, startLoc, checkKeywords, isBinding);
}
}
parseBindingAtom() {
return this.parsePlaceholder("Pattern") || super.parseBindingAtom();
}
isValidLVal(type, isParenthesized, binding) {
return type === "Placeholder" || super.isValidLVal(type, isParenthesized, binding);
}
toAssignable(node, isLHS) {
if (node && node.type === "Placeholder" && node.expectedNode === "Expression") {
node.expectedNode = "Pattern";
} else {
super.toAssignable(node, isLHS);
}
}
chStartsBindingIdentifier(ch, pos) {
if (super.chStartsBindingIdentifier(ch, pos)) {
return true;
}
const nextToken = this.lookahead();
if (nextToken.type === 142) {
return true;
}
return false;
}
verifyBreakContinue(node, isBreak) {
if (node.label && node.label.type === "Placeholder") return;
super.verifyBreakContinue(node, isBreak);
}
parseExpressionStatement(node, expr) {
var _expr$extra;
if (expr.type !== "Placeholder" || (_expr$extra = expr.extra) != null && _expr$extra.parenthesized) {
return super.parseExpressionStatement(node, expr);
}
if (this.match(14)) {
const stmt = node;
stmt.label = this.finishPlaceholder(expr, "Identifier");
this.next();
stmt.body = super.parseStatementOrSloppyAnnexBFunctionDeclaration();
return this.finishNode(stmt, "LabeledStatement");
}
this.semicolon();
node.name = expr.name;
return this.finishPlaceholder(node, "Statement");
}
parseBlock(allowDirectives, createNewLexicalScope, afterBlockParse) {
return this.parsePlaceholder("BlockStatement") || super.parseBlock(allowDirectives, createNewLexicalScope, afterBlockParse);
}
parseFunctionId(requireId) {
return this.parsePlaceholder("Identifier") || super.parseFunctionId(requireId);
}
parseClass(node, isStatement, optionalId) {
const type = isStatement ? "ClassDeclaration" : "ClassExpression";
this.next();
const oldStrict = this.state.strict;
const placeholder = this.parsePlaceholder("Identifier");
if (placeholder) {
if (this.match(81) || this.match(142) || this.match(5)) {
node.id = placeholder;
} else if (optionalId || !isStatement) {
node.id = null;
node.body = this.finishPlaceholder(placeholder, "ClassBody");
return this.finishNode(node, type);
} else {
throw this.raise(PlaceholderErrors.ClassNameIsRequired, {
at: this.state.startLoc
});
}
} else {
this.parseClassId(node, isStatement, optionalId);
}
super.parseClassSuper(node);
node.body = this.parsePlaceholder("ClassBody") || super.parseClassBody(!!node.superClass, oldStrict);
return this.finishNode(node, type);
}
parseExport(node, decorators) {
const placeholder = this.parsePlaceholder("Identifier");
if (!placeholder) return super.parseExport(node, decorators);
if (!this.isContextual(97) && !this.match(12)) {
node.specifiers = [];
node.source = null;
node.declaration = this.finishPlaceholder(placeholder, "Declaration");
return this.finishNode(node, "ExportNamedDeclaration");
}
this.expectPlugin("exportDefaultFrom");
const specifier = this.startNode();
specifier.exported = placeholder;
node.specifiers = [this.finishNode(specifier, "ExportDefaultSpecifier")];
return super.parseExport(node, decorators);
}
isExportDefaultSpecifier() {
if (this.match(65)) {
const next = this.nextTokenStart();
if (this.isUnparsedContextual(next, "from")) {
if (this.input.startsWith((0, _types.tokenLabelName)(142), this.nextTokenStartSince(next + 4))) {
return true;
}
}
}
return super.isExportDefaultSpecifier();
}
maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier) {
var _specifiers;
if ((_specifiers = node.specifiers) != null && _specifiers.length) {
return true;
}
return super.maybeParseExportDefaultSpecifier(node, maybeDefaultIdentifier);
}
checkExport(node) {
const {
specifiers
} = node;
if (specifiers != null && specifiers.length) {
node.specifiers = specifiers.filter(node => node.exported.type === "Placeholder");
}
super.checkExport(node);
node.specifiers = specifiers;
}
parseImport(node) {
const placeholder = this.parsePlaceholder("Identifier");
if (!placeholder) return super.parseImport(node);
node.specifiers = [];
if (!this.isContextual(97) && !this.match(12)) {
node.source = this.finishPlaceholder(placeholder, "StringLiteral");
this.semicolon();
return this.finishNode(node, "ImportDeclaration");
}
const specifier = this.startNodeAtNode(placeholder);
specifier.local = placeholder;
node.specifiers.push(this.finishNode(specifier, "ImportDefaultSpecifier"));
if (this.eat(12)) {
const hasStarImport = this.maybeParseStarImportSpecifier(node);
if (!hasStarImport) this.parseNamedImportSpecifiers(node);
}
this.expectContextual(97);
node.source = this.parseImportSource();
this.semicolon();
return this.finishNode(node, "ImportDeclaration");
}
parseImportSource() {
return this.parsePlaceholder("StringLiteral") || super.parseImportSource();
}
assertNoSpace() {
if (this.state.start > this.state.lastTokEndLoc.index) {
this.raise(PlaceholderErrors.UnexpectedSpace, {
at: this.state.lastTokEndLoc
});
}
}
};
exports.default = _default;
//# sourceMappingURL=placeholders.js.map
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