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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
exports.newArrowHeadScope = newArrowHeadScope;
exports.newAsyncArrowScope = newAsyncArrowScope;
exports.newExpressionScope = newExpressionScope;
exports.newParameterDeclarationScope = newParameterDeclarationScope;
var _parseError = require("../parse-error");
class ExpressionScope {
constructor(type = 0) {
this.type = type;
}
canBeArrowParameterDeclaration() {
return this.type === 2 || this.type === 1;
}
isCertainlyParameterDeclaration() {
return this.type === 3;
}
}
class ArrowHeadParsingScope extends ExpressionScope {
constructor(type) {
super(type);
this.declarationErrors = new Map();
}
recordDeclarationError(ParsingErrorClass, {
at
}) {
const index = at.index;
this.declarationErrors.set(index, [ParsingErrorClass, at]);
}
clearDeclarationError(index) {
this.declarationErrors.delete(index);
}
iterateErrors(iterator) {
this.declarationErrors.forEach(iterator);
}
}
class ExpressionScopeHandler {
constructor(parser) {
this.parser = void 0;
this.stack = [new ExpressionScope()];
this.parser = parser;
}
enter(scope) {
this.stack.push(scope);
}
exit() {
this.stack.pop();
}
recordParameterInitializerError(toParseError, {
at: node
}) {
const origin = {
at: node.loc.start
};
const {
stack
} = this;
let i = stack.length - 1;
let scope = stack[i];
while (!scope.isCertainlyParameterDeclaration()) {
if (scope.canBeArrowParameterDeclaration()) {
scope.recordDeclarationError(toParseError, origin);
} else {
return;
}
scope = stack[--i];
}
this.parser.raise(toParseError, origin);
}
recordArrowParameterBindingError(error, {
at: node
}) {
const {
stack
} = this;
const scope = stack[stack.length - 1];
const origin = {
at: node.loc.start
};
if (scope.isCertainlyParameterDeclaration()) {
this.parser.raise(error, origin);
} else if (scope.canBeArrowParameterDeclaration()) {
scope.recordDeclarationError(error, origin);
} else {
return;
}
}
recordAsyncArrowParametersError({
at
}) {
const {
stack
} = this;
let i = stack.length - 1;
let scope = stack[i];
while (scope.canBeArrowParameterDeclaration()) {
if (scope.type === 2) {
scope.recordDeclarationError(_parseError.Errors.AwaitBindingIdentifier, {
at
});
}
scope = stack[--i];
}
}
validateAsPattern() {
const {
stack
} = this;
const currentScope = stack[stack.length - 1];
if (!currentScope.canBeArrowParameterDeclaration()) return;
currentScope.iterateErrors(([toParseError, loc]) => {
this.parser.raise(toParseError, {
at: loc
});
let i = stack.length - 2;
let scope = stack[i];
while (scope.canBeArrowParameterDeclaration()) {
scope.clearDeclarationError(loc.index);
scope = stack[--i];
}
});
}
}
exports.default = ExpressionScopeHandler;
function newParameterDeclarationScope() {
return new ExpressionScope(3);
}
function newArrowHeadScope() {
return new ArrowHeadParsingScope(1);
}
function newAsyncArrowScope() {
return new ArrowHeadParsingScope(2);
}
function newExpressionScope() {
return new ExpressionScope();
}
//# sourceMappingURL=expression-scope.js.map
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