massive update, probably broken
[dotfiles/.git] / .config / coc / extensions / node_modules / coc-json / node_modules / vscode-json-languageservice / lib / umd / parser / jsonParser.js
diff --git a/.config/coc/extensions/node_modules/coc-json/node_modules/vscode-json-languageservice/lib/umd/parser/jsonParser.js b/.config/coc/extensions/node_modules/coc-json/node_modules/vscode-json-languageservice/lib/umd/parser/jsonParser.js
new file mode 100644 (file)
index 0000000..3559402
--- /dev/null
@@ -0,0 +1,1231 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        if (typeof b !== "function" && b !== null)
+            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports", "jsonc-parser", "../utils/objects", "../utils/strings", "../jsonLanguageTypes", "vscode-nls"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports.parse = exports.JSONDocument = exports.contains = exports.getNodePath = exports.getNodeValue = exports.newJSONDocument = exports.ValidationResult = exports.EnumMatch = exports.asSchema = exports.ObjectASTNodeImpl = exports.PropertyASTNodeImpl = exports.StringASTNodeImpl = exports.NumberASTNodeImpl = exports.ArrayASTNodeImpl = exports.BooleanASTNodeImpl = exports.NullASTNodeImpl = exports.ASTNodeImpl = void 0;
+    var Json = require("jsonc-parser");
+    var objects_1 = require("../utils/objects");
+    var strings_1 = require("../utils/strings");
+    var jsonLanguageTypes_1 = require("../jsonLanguageTypes");
+    var nls = require("vscode-nls");
+    var localize = nls.loadMessageBundle();
+    var formats = {
+        'color-hex': { errorMessage: localize('colorHexFormatWarning', 'Invalid color format. Use #RGB, #RGBA, #RRGGBB or #RRGGBBAA.'), pattern: /^#([0-9A-Fa-f]{3,4}|([0-9A-Fa-f]{2}){3,4})$/ },
+        'date-time': { errorMessage: localize('dateTimeFormatWarning', 'String is not a RFC3339 date-time.'), pattern: /^(\d{4})-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])T([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?(Z|(\+|-)([01][0-9]|2[0-3]):([0-5][0-9]))$/i },
+        'date': { errorMessage: localize('dateFormatWarning', 'String is not a RFC3339 date.'), pattern: /^(\d{4})-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])$/i },
+        'time': { errorMessage: localize('timeFormatWarning', 'String is not a RFC3339 time.'), pattern: /^([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?(Z|(\+|-)([01][0-9]|2[0-3]):([0-5][0-9]))$/i },
+        'email': { errorMessage: localize('emailFormatWarning', 'String is not an e-mail address.'), pattern: /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/ }
+    };
+    var ASTNodeImpl = /** @class */ (function () {
+        function ASTNodeImpl(parent, offset, length) {
+            if (length === void 0) { length = 0; }
+            this.offset = offset;
+            this.length = length;
+            this.parent = parent;
+        }
+        Object.defineProperty(ASTNodeImpl.prototype, "children", {
+            get: function () {
+                return [];
+            },
+            enumerable: false,
+            configurable: true
+        });
+        ASTNodeImpl.prototype.toString = function () {
+            return 'type: ' + this.type + ' (' + this.offset + '/' + this.length + ')' + (this.parent ? ' parent: {' + this.parent.toString() + '}' : '');
+        };
+        return ASTNodeImpl;
+    }());
+    exports.ASTNodeImpl = ASTNodeImpl;
+    var NullASTNodeImpl = /** @class */ (function (_super) {
+        __extends(NullASTNodeImpl, _super);
+        function NullASTNodeImpl(parent, offset) {
+            var _this = _super.call(this, parent, offset) || this;
+            _this.type = 'null';
+            _this.value = null;
+            return _this;
+        }
+        return NullASTNodeImpl;
+    }(ASTNodeImpl));
+    exports.NullASTNodeImpl = NullASTNodeImpl;
+    var BooleanASTNodeImpl = /** @class */ (function (_super) {
+        __extends(BooleanASTNodeImpl, _super);
+        function BooleanASTNodeImpl(parent, boolValue, offset) {
+            var _this = _super.call(this, parent, offset) || this;
+            _this.type = 'boolean';
+            _this.value = boolValue;
+            return _this;
+        }
+        return BooleanASTNodeImpl;
+    }(ASTNodeImpl));
+    exports.BooleanASTNodeImpl = BooleanASTNodeImpl;
+    var ArrayASTNodeImpl = /** @class */ (function (_super) {
+        __extends(ArrayASTNodeImpl, _super);
+        function ArrayASTNodeImpl(parent, offset) {
+            var _this = _super.call(this, parent, offset) || this;
+            _this.type = 'array';
+            _this.items = [];
+            return _this;
+        }
+        Object.defineProperty(ArrayASTNodeImpl.prototype, "children", {
+            get: function () {
+                return this.items;
+            },
+            enumerable: false,
+            configurable: true
+        });
+        return ArrayASTNodeImpl;
+    }(ASTNodeImpl));
+    exports.ArrayASTNodeImpl = ArrayASTNodeImpl;
+    var NumberASTNodeImpl = /** @class */ (function (_super) {
+        __extends(NumberASTNodeImpl, _super);
+        function NumberASTNodeImpl(parent, offset) {
+            var _this = _super.call(this, parent, offset) || this;
+            _this.type = 'number';
+            _this.isInteger = true;
+            _this.value = Number.NaN;
+            return _this;
+        }
+        return NumberASTNodeImpl;
+    }(ASTNodeImpl));
+    exports.NumberASTNodeImpl = NumberASTNodeImpl;
+    var StringASTNodeImpl = /** @class */ (function (_super) {
+        __extends(StringASTNodeImpl, _super);
+        function StringASTNodeImpl(parent, offset, length) {
+            var _this = _super.call(this, parent, offset, length) || this;
+            _this.type = 'string';
+            _this.value = '';
+            return _this;
+        }
+        return StringASTNodeImpl;
+    }(ASTNodeImpl));
+    exports.StringASTNodeImpl = StringASTNodeImpl;
+    var PropertyASTNodeImpl = /** @class */ (function (_super) {
+        __extends(PropertyASTNodeImpl, _super);
+        function PropertyASTNodeImpl(parent, offset, keyNode) {
+            var _this = _super.call(this, parent, offset) || this;
+            _this.type = 'property';
+            _this.colonOffset = -1;
+            _this.keyNode = keyNode;
+            return _this;
+        }
+        Object.defineProperty(PropertyASTNodeImpl.prototype, "children", {
+            get: function () {
+                return this.valueNode ? [this.keyNode, this.valueNode] : [this.keyNode];
+            },
+            enumerable: false,
+            configurable: true
+        });
+        return PropertyASTNodeImpl;
+    }(ASTNodeImpl));
+    exports.PropertyASTNodeImpl = PropertyASTNodeImpl;
+    var ObjectASTNodeImpl = /** @class */ (function (_super) {
+        __extends(ObjectASTNodeImpl, _super);
+        function ObjectASTNodeImpl(parent, offset) {
+            var _this = _super.call(this, parent, offset) || this;
+            _this.type = 'object';
+            _this.properties = [];
+            return _this;
+        }
+        Object.defineProperty(ObjectASTNodeImpl.prototype, "children", {
+            get: function () {
+                return this.properties;
+            },
+            enumerable: false,
+            configurable: true
+        });
+        return ObjectASTNodeImpl;
+    }(ASTNodeImpl));
+    exports.ObjectASTNodeImpl = ObjectASTNodeImpl;
+    function asSchema(schema) {
+        if (objects_1.isBoolean(schema)) {
+            return schema ? {} : { "not": {} };
+        }
+        return schema;
+    }
+    exports.asSchema = asSchema;
+    var EnumMatch;
+    (function (EnumMatch) {
+        EnumMatch[EnumMatch["Key"] = 0] = "Key";
+        EnumMatch[EnumMatch["Enum"] = 1] = "Enum";
+    })(EnumMatch = exports.EnumMatch || (exports.EnumMatch = {}));
+    var SchemaCollector = /** @class */ (function () {
+        function SchemaCollector(focusOffset, exclude) {
+            if (focusOffset === void 0) { focusOffset = -1; }
+            this.focusOffset = focusOffset;
+            this.exclude = exclude;
+            this.schemas = [];
+        }
+        SchemaCollector.prototype.add = function (schema) {
+            this.schemas.push(schema);
+        };
+        SchemaCollector.prototype.merge = function (other) {
+            Array.prototype.push.apply(this.schemas, other.schemas);
+        };
+        SchemaCollector.prototype.include = function (node) {
+            return (this.focusOffset === -1 || contains(node, this.focusOffset)) && (node !== this.exclude);
+        };
+        SchemaCollector.prototype.newSub = function () {
+            return new SchemaCollector(-1, this.exclude);
+        };
+        return SchemaCollector;
+    }());
+    var NoOpSchemaCollector = /** @class */ (function () {
+        function NoOpSchemaCollector() {
+        }
+        Object.defineProperty(NoOpSchemaCollector.prototype, "schemas", {
+            get: function () { return []; },
+            enumerable: false,
+            configurable: true
+        });
+        NoOpSchemaCollector.prototype.add = function (schema) { };
+        NoOpSchemaCollector.prototype.merge = function (other) { };
+        NoOpSchemaCollector.prototype.include = function (node) { return true; };
+        NoOpSchemaCollector.prototype.newSub = function () { return this; };
+        NoOpSchemaCollector.instance = new NoOpSchemaCollector();
+        return NoOpSchemaCollector;
+    }());
+    var ValidationResult = /** @class */ (function () {
+        function ValidationResult() {
+            this.problems = [];
+            this.propertiesMatches = 0;
+            this.propertiesValueMatches = 0;
+            this.primaryValueMatches = 0;
+            this.enumValueMatch = false;
+            this.enumValues = undefined;
+        }
+        ValidationResult.prototype.hasProblems = function () {
+            return !!this.problems.length;
+        };
+        ValidationResult.prototype.mergeAll = function (validationResults) {
+            for (var _i = 0, validationResults_1 = validationResults; _i < validationResults_1.length; _i++) {
+                var validationResult = validationResults_1[_i];
+                this.merge(validationResult);
+            }
+        };
+        ValidationResult.prototype.merge = function (validationResult) {
+            this.problems = this.problems.concat(validationResult.problems);
+        };
+        ValidationResult.prototype.mergeEnumValues = function (validationResult) {
+            if (!this.enumValueMatch && !validationResult.enumValueMatch && this.enumValues && validationResult.enumValues) {
+                this.enumValues = this.enumValues.concat(validationResult.enumValues);
+                for (var _i = 0, _a = this.problems; _i < _a.length; _i++) {
+                    var error = _a[_i];
+                    if (error.code === jsonLanguageTypes_1.ErrorCode.EnumValueMismatch) {
+                        error.message = localize('enumWarning', 'Value is not accepted. Valid values: {0}.', this.enumValues.map(function (v) { return JSON.stringify(v); }).join(', '));
+                    }
+                }
+            }
+        };
+        ValidationResult.prototype.mergePropertyMatch = function (propertyValidationResult) {
+            this.merge(propertyValidationResult);
+            this.propertiesMatches++;
+            if (propertyValidationResult.enumValueMatch || !propertyValidationResult.hasProblems() && propertyValidationResult.propertiesMatches) {
+                this.propertiesValueMatches++;
+            }
+            if (propertyValidationResult.enumValueMatch && propertyValidationResult.enumValues && propertyValidationResult.enumValues.length === 1) {
+                this.primaryValueMatches++;
+            }
+        };
+        ValidationResult.prototype.compare = function (other) {
+            var hasProblems = this.hasProblems();
+            if (hasProblems !== other.hasProblems()) {
+                return hasProblems ? -1 : 1;
+            }
+            if (this.enumValueMatch !== other.enumValueMatch) {
+                return other.enumValueMatch ? -1 : 1;
+            }
+            if (this.primaryValueMatches !== other.primaryValueMatches) {
+                return this.primaryValueMatches - other.primaryValueMatches;
+            }
+            if (this.propertiesValueMatches !== other.propertiesValueMatches) {
+                return this.propertiesValueMatches - other.propertiesValueMatches;
+            }
+            return this.propertiesMatches - other.propertiesMatches;
+        };
+        return ValidationResult;
+    }());
+    exports.ValidationResult = ValidationResult;
+    function newJSONDocument(root, diagnostics) {
+        if (diagnostics === void 0) { diagnostics = []; }
+        return new JSONDocument(root, diagnostics, []);
+    }
+    exports.newJSONDocument = newJSONDocument;
+    function getNodeValue(node) {
+        return Json.getNodeValue(node);
+    }
+    exports.getNodeValue = getNodeValue;
+    function getNodePath(node) {
+        return Json.getNodePath(node);
+    }
+    exports.getNodePath = getNodePath;
+    function contains(node, offset, includeRightBound) {
+        if (includeRightBound === void 0) { includeRightBound = false; }
+        return offset >= node.offset && offset < (node.offset + node.length) || includeRightBound && offset === (node.offset + node.length);
+    }
+    exports.contains = contains;
+    var JSONDocument = /** @class */ (function () {
+        function JSONDocument(root, syntaxErrors, comments) {
+            if (syntaxErrors === void 0) { syntaxErrors = []; }
+            if (comments === void 0) { comments = []; }
+            this.root = root;
+            this.syntaxErrors = syntaxErrors;
+            this.comments = comments;
+        }
+        JSONDocument.prototype.getNodeFromOffset = function (offset, includeRightBound) {
+            if (includeRightBound === void 0) { includeRightBound = false; }
+            if (this.root) {
+                return Json.findNodeAtOffset(this.root, offset, includeRightBound);
+            }
+            return undefined;
+        };
+        JSONDocument.prototype.visit = function (visitor) {
+            if (this.root) {
+                var doVisit_1 = function (node) {
+                    var ctn = visitor(node);
+                    var children = node.children;
+                    if (Array.isArray(children)) {
+                        for (var i = 0; i < children.length && ctn; i++) {
+                            ctn = doVisit_1(children[i]);
+                        }
+                    }
+                    return ctn;
+                };
+                doVisit_1(this.root);
+            }
+        };
+        JSONDocument.prototype.validate = function (textDocument, schema, severity) {
+            if (severity === void 0) { severity = jsonLanguageTypes_1.DiagnosticSeverity.Warning; }
+            if (this.root && schema) {
+                var validationResult = new ValidationResult();
+                validate(this.root, schema, validationResult, NoOpSchemaCollector.instance);
+                return validationResult.problems.map(function (p) {
+                    var _a;
+                    var range = jsonLanguageTypes_1.Range.create(textDocument.positionAt(p.location.offset), textDocument.positionAt(p.location.offset + p.location.length));
+                    return jsonLanguageTypes_1.Diagnostic.create(range, p.message, (_a = p.severity) !== null && _a !== void 0 ? _a : severity, p.code);
+                });
+            }
+            return undefined;
+        };
+        JSONDocument.prototype.getMatchingSchemas = function (schema, focusOffset, exclude) {
+            if (focusOffset === void 0) { focusOffset = -1; }
+            var matchingSchemas = new SchemaCollector(focusOffset, exclude);
+            if (this.root && schema) {
+                validate(this.root, schema, new ValidationResult(), matchingSchemas);
+            }
+            return matchingSchemas.schemas;
+        };
+        return JSONDocument;
+    }());
+    exports.JSONDocument = JSONDocument;
+    function validate(n, schema, validationResult, matchingSchemas) {
+        if (!n || !matchingSchemas.include(n)) {
+            return;
+        }
+        var node = n;
+        switch (node.type) {
+            case 'object':
+                _validateObjectNode(node, schema, validationResult, matchingSchemas);
+                break;
+            case 'array':
+                _validateArrayNode(node, schema, validationResult, matchingSchemas);
+                break;
+            case 'string':
+                _validateStringNode(node, schema, validationResult, matchingSchemas);
+                break;
+            case 'number':
+                _validateNumberNode(node, schema, validationResult, matchingSchemas);
+                break;
+            case 'property':
+                return validate(node.valueNode, schema, validationResult, matchingSchemas);
+        }
+        _validateNode();
+        matchingSchemas.add({ node: node, schema: schema });
+        function _validateNode() {
+            function matchesType(type) {
+                return node.type === type || (type === 'integer' && node.type === 'number' && node.isInteger);
+            }
+            if (Array.isArray(schema.type)) {
+                if (!schema.type.some(matchesType)) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: schema.errorMessage || localize('typeArrayMismatchWarning', 'Incorrect type. Expected one of {0}.', schema.type.join(', '))
+                    });
+                }
+            }
+            else if (schema.type) {
+                if (!matchesType(schema.type)) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: schema.errorMessage || localize('typeMismatchWarning', 'Incorrect type. Expected "{0}".', schema.type)
+                    });
+                }
+            }
+            if (Array.isArray(schema.allOf)) {
+                for (var _i = 0, _a = schema.allOf; _i < _a.length; _i++) {
+                    var subSchemaRef = _a[_i];
+                    validate(node, asSchema(subSchemaRef), validationResult, matchingSchemas);
+                }
+            }
+            var notSchema = asSchema(schema.not);
+            if (notSchema) {
+                var subValidationResult = new ValidationResult();
+                var subMatchingSchemas = matchingSchemas.newSub();
+                validate(node, notSchema, subValidationResult, subMatchingSchemas);
+                if (!subValidationResult.hasProblems()) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: localize('notSchemaWarning', "Matches a schema that is not allowed.")
+                    });
+                }
+                for (var _b = 0, _c = subMatchingSchemas.schemas; _b < _c.length; _b++) {
+                    var ms = _c[_b];
+                    ms.inverted = !ms.inverted;
+                    matchingSchemas.add(ms);
+                }
+            }
+            var testAlternatives = function (alternatives, maxOneMatch) {
+                var matches = [];
+                // remember the best match that is used for error messages
+                var bestMatch = undefined;
+                for (var _i = 0, alternatives_1 = alternatives; _i < alternatives_1.length; _i++) {
+                    var subSchemaRef = alternatives_1[_i];
+                    var subSchema = asSchema(subSchemaRef);
+                    var subValidationResult = new ValidationResult();
+                    var subMatchingSchemas = matchingSchemas.newSub();
+                    validate(node, subSchema, subValidationResult, subMatchingSchemas);
+                    if (!subValidationResult.hasProblems()) {
+                        matches.push(subSchema);
+                    }
+                    if (!bestMatch) {
+                        bestMatch = { schema: subSchema, validationResult: subValidationResult, matchingSchemas: subMatchingSchemas };
+                    }
+                    else {
+                        if (!maxOneMatch && !subValidationResult.hasProblems() && !bestMatch.validationResult.hasProblems()) {
+                            // no errors, both are equally good matches
+                            bestMatch.matchingSchemas.merge(subMatchingSchemas);
+                            bestMatch.validationResult.propertiesMatches += subValidationResult.propertiesMatches;
+                            bestMatch.validationResult.propertiesValueMatches += subValidationResult.propertiesValueMatches;
+                        }
+                        else {
+                            var compareResult = subValidationResult.compare(bestMatch.validationResult);
+                            if (compareResult > 0) {
+                                // our node is the best matching so far
+                                bestMatch = { schema: subSchema, validationResult: subValidationResult, matchingSchemas: subMatchingSchemas };
+                            }
+                            else if (compareResult === 0) {
+                                // there's already a best matching but we are as good
+                                bestMatch.matchingSchemas.merge(subMatchingSchemas);
+                                bestMatch.validationResult.mergeEnumValues(subValidationResult);
+                            }
+                        }
+                    }
+                }
+                if (matches.length > 1 && maxOneMatch) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: 1 },
+                        message: localize('oneOfWarning', "Matches multiple schemas when only one must validate.")
+                    });
+                }
+                if (bestMatch) {
+                    validationResult.merge(bestMatch.validationResult);
+                    validationResult.propertiesMatches += bestMatch.validationResult.propertiesMatches;
+                    validationResult.propertiesValueMatches += bestMatch.validationResult.propertiesValueMatches;
+                    matchingSchemas.merge(bestMatch.matchingSchemas);
+                }
+                return matches.length;
+            };
+            if (Array.isArray(schema.anyOf)) {
+                testAlternatives(schema.anyOf, false);
+            }
+            if (Array.isArray(schema.oneOf)) {
+                testAlternatives(schema.oneOf, true);
+            }
+            var testBranch = function (schema) {
+                var subValidationResult = new ValidationResult();
+                var subMatchingSchemas = matchingSchemas.newSub();
+                validate(node, asSchema(schema), subValidationResult, subMatchingSchemas);
+                validationResult.merge(subValidationResult);
+                validationResult.propertiesMatches += subValidationResult.propertiesMatches;
+                validationResult.propertiesValueMatches += subValidationResult.propertiesValueMatches;
+                matchingSchemas.merge(subMatchingSchemas);
+            };
+            var testCondition = function (ifSchema, thenSchema, elseSchema) {
+                var subSchema = asSchema(ifSchema);
+                var subValidationResult = new ValidationResult();
+                var subMatchingSchemas = matchingSchemas.newSub();
+                validate(node, subSchema, subValidationResult, subMatchingSchemas);
+                matchingSchemas.merge(subMatchingSchemas);
+                if (!subValidationResult.hasProblems()) {
+                    if (thenSchema) {
+                        testBranch(thenSchema);
+                    }
+                }
+                else if (elseSchema) {
+                    testBranch(elseSchema);
+                }
+            };
+            var ifSchema = asSchema(schema.if);
+            if (ifSchema) {
+                testCondition(ifSchema, asSchema(schema.then), asSchema(schema.else));
+            }
+            if (Array.isArray(schema.enum)) {
+                var val = getNodeValue(node);
+                var enumValueMatch = false;
+                for (var _d = 0, _e = schema.enum; _d < _e.length; _d++) {
+                    var e = _e[_d];
+                    if (objects_1.equals(val, e)) {
+                        enumValueMatch = true;
+                        break;
+                    }
+                }
+                validationResult.enumValues = schema.enum;
+                validationResult.enumValueMatch = enumValueMatch;
+                if (!enumValueMatch) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        code: jsonLanguageTypes_1.ErrorCode.EnumValueMismatch,
+                        message: schema.errorMessage || localize('enumWarning', 'Value is not accepted. Valid values: {0}.', schema.enum.map(function (v) { return JSON.stringify(v); }).join(', '))
+                    });
+                }
+            }
+            if (objects_1.isDefined(schema.const)) {
+                var val = getNodeValue(node);
+                if (!objects_1.equals(val, schema.const)) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        code: jsonLanguageTypes_1.ErrorCode.EnumValueMismatch,
+                        message: schema.errorMessage || localize('constWarning', 'Value must be {0}.', JSON.stringify(schema.const))
+                    });
+                    validationResult.enumValueMatch = false;
+                }
+                else {
+                    validationResult.enumValueMatch = true;
+                }
+                validationResult.enumValues = [schema.const];
+            }
+            if (schema.deprecationMessage && node.parent) {
+                validationResult.problems.push({
+                    location: { offset: node.parent.offset, length: node.parent.length },
+                    severity: jsonLanguageTypes_1.DiagnosticSeverity.Warning,
+                    message: schema.deprecationMessage,
+                    code: jsonLanguageTypes_1.ErrorCode.Deprecated
+                });
+            }
+        }
+        function _validateNumberNode(node, schema, validationResult, matchingSchemas) {
+            var val = node.value;
+            function normalizeFloats(float) {
+                var _a;
+                var parts = /^(-?\d+)(?:\.(\d+))?(?:e([-+]\d+))?$/.exec(float.toString());
+                return parts && {
+                    value: Number(parts[1] + (parts[2] || '')),
+                    multiplier: (((_a = parts[2]) === null || _a === void 0 ? void 0 : _a.length) || 0) - (parseInt(parts[3]) || 0)
+                };
+            }
+            ;
+            if (objects_1.isNumber(schema.multipleOf)) {
+                var remainder = -1;
+                if (Number.isInteger(schema.multipleOf)) {
+                    remainder = val % schema.multipleOf;
+                }
+                else {
+                    var normMultipleOf = normalizeFloats(schema.multipleOf);
+                    var normValue = normalizeFloats(val);
+                    if (normMultipleOf && normValue) {
+                        var multiplier = Math.pow(10, Math.abs(normValue.multiplier - normMultipleOf.multiplier));
+                        if (normValue.multiplier < normMultipleOf.multiplier) {
+                            normValue.value *= multiplier;
+                        }
+                        else {
+                            normMultipleOf.value *= multiplier;
+                        }
+                        remainder = normValue.value % normMultipleOf.value;
+                    }
+                }
+                if (remainder !== 0) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: localize('multipleOfWarning', 'Value is not divisible by {0}.', schema.multipleOf)
+                    });
+                }
+            }
+            function getExclusiveLimit(limit, exclusive) {
+                if (objects_1.isNumber(exclusive)) {
+                    return exclusive;
+                }
+                if (objects_1.isBoolean(exclusive) && exclusive) {
+                    return limit;
+                }
+                return undefined;
+            }
+            function getLimit(limit, exclusive) {
+                if (!objects_1.isBoolean(exclusive) || !exclusive) {
+                    return limit;
+                }
+                return undefined;
+            }
+            var exclusiveMinimum = getExclusiveLimit(schema.minimum, schema.exclusiveMinimum);
+            if (objects_1.isNumber(exclusiveMinimum) && val <= exclusiveMinimum) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('exclusiveMinimumWarning', 'Value is below the exclusive minimum of {0}.', exclusiveMinimum)
+                });
+            }
+            var exclusiveMaximum = getExclusiveLimit(schema.maximum, schema.exclusiveMaximum);
+            if (objects_1.isNumber(exclusiveMaximum) && val >= exclusiveMaximum) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('exclusiveMaximumWarning', 'Value is above the exclusive maximum of {0}.', exclusiveMaximum)
+                });
+            }
+            var minimum = getLimit(schema.minimum, schema.exclusiveMinimum);
+            if (objects_1.isNumber(minimum) && val < minimum) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('minimumWarning', 'Value is below the minimum of {0}.', minimum)
+                });
+            }
+            var maximum = getLimit(schema.maximum, schema.exclusiveMaximum);
+            if (objects_1.isNumber(maximum) && val > maximum) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('maximumWarning', 'Value is above the maximum of {0}.', maximum)
+                });
+            }
+        }
+        function _validateStringNode(node, schema, validationResult, matchingSchemas) {
+            if (objects_1.isNumber(schema.minLength) && node.value.length < schema.minLength) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('minLengthWarning', 'String is shorter than the minimum length of {0}.', schema.minLength)
+                });
+            }
+            if (objects_1.isNumber(schema.maxLength) && node.value.length > schema.maxLength) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('maxLengthWarning', 'String is longer than the maximum length of {0}.', schema.maxLength)
+                });
+            }
+            if (objects_1.isString(schema.pattern)) {
+                var regex = strings_1.extendedRegExp(schema.pattern);
+                if (!regex.test(node.value)) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: schema.patternErrorMessage || schema.errorMessage || localize('patternWarning', 'String does not match the pattern of "{0}".', schema.pattern)
+                    });
+                }
+            }
+            if (schema.format) {
+                switch (schema.format) {
+                    case 'uri':
+                    case 'uri-reference':
+                        {
+                            var errorMessage = void 0;
+                            if (!node.value) {
+                                errorMessage = localize('uriEmpty', 'URI expected.');
+                            }
+                            else {
+                                var match = /^(([^:/?#]+?):)?(\/\/([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?/.exec(node.value);
+                                if (!match) {
+                                    errorMessage = localize('uriMissing', 'URI is expected.');
+                                }
+                                else if (!match[2] && schema.format === 'uri') {
+                                    errorMessage = localize('uriSchemeMissing', 'URI with a scheme is expected.');
+                                }
+                            }
+                            if (errorMessage) {
+                                validationResult.problems.push({
+                                    location: { offset: node.offset, length: node.length },
+                                    message: schema.patternErrorMessage || schema.errorMessage || localize('uriFormatWarning', 'String is not a URI: {0}', errorMessage)
+                                });
+                            }
+                        }
+                        break;
+                    case 'color-hex':
+                    case 'date-time':
+                    case 'date':
+                    case 'time':
+                    case 'email':
+                        var format = formats[schema.format];
+                        if (!node.value || !format.pattern.exec(node.value)) {
+                            validationResult.problems.push({
+                                location: { offset: node.offset, length: node.length },
+                                message: schema.patternErrorMessage || schema.errorMessage || format.errorMessage
+                            });
+                        }
+                    default:
+                }
+            }
+        }
+        function _validateArrayNode(node, schema, validationResult, matchingSchemas) {
+            if (Array.isArray(schema.items)) {
+                var subSchemas = schema.items;
+                for (var index = 0; index < subSchemas.length; index++) {
+                    var subSchemaRef = subSchemas[index];
+                    var subSchema = asSchema(subSchemaRef);
+                    var itemValidationResult = new ValidationResult();
+                    var item = node.items[index];
+                    if (item) {
+                        validate(item, subSchema, itemValidationResult, matchingSchemas);
+                        validationResult.mergePropertyMatch(itemValidationResult);
+                    }
+                    else if (node.items.length >= subSchemas.length) {
+                        validationResult.propertiesValueMatches++;
+                    }
+                }
+                if (node.items.length > subSchemas.length) {
+                    if (typeof schema.additionalItems === 'object') {
+                        for (var i = subSchemas.length; i < node.items.length; i++) {
+                            var itemValidationResult = new ValidationResult();
+                            validate(node.items[i], schema.additionalItems, itemValidationResult, matchingSchemas);
+                            validationResult.mergePropertyMatch(itemValidationResult);
+                        }
+                    }
+                    else if (schema.additionalItems === false) {
+                        validationResult.problems.push({
+                            location: { offset: node.offset, length: node.length },
+                            message: localize('additionalItemsWarning', 'Array has too many items according to schema. Expected {0} or fewer.', subSchemas.length)
+                        });
+                    }
+                }
+            }
+            else {
+                var itemSchema = asSchema(schema.items);
+                if (itemSchema) {
+                    for (var _i = 0, _a = node.items; _i < _a.length; _i++) {
+                        var item = _a[_i];
+                        var itemValidationResult = new ValidationResult();
+                        validate(item, itemSchema, itemValidationResult, matchingSchemas);
+                        validationResult.mergePropertyMatch(itemValidationResult);
+                    }
+                }
+            }
+            var containsSchema = asSchema(schema.contains);
+            if (containsSchema) {
+                var doesContain = node.items.some(function (item) {
+                    var itemValidationResult = new ValidationResult();
+                    validate(item, containsSchema, itemValidationResult, NoOpSchemaCollector.instance);
+                    return !itemValidationResult.hasProblems();
+                });
+                if (!doesContain) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: schema.errorMessage || localize('requiredItemMissingWarning', 'Array does not contain required item.')
+                    });
+                }
+            }
+            if (objects_1.isNumber(schema.minItems) && node.items.length < schema.minItems) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('minItemsWarning', 'Array has too few items. Expected {0} or more.', schema.minItems)
+                });
+            }
+            if (objects_1.isNumber(schema.maxItems) && node.items.length > schema.maxItems) {
+                validationResult.problems.push({
+                    location: { offset: node.offset, length: node.length },
+                    message: localize('maxItemsWarning', 'Array has too many items. Expected {0} or fewer.', schema.maxItems)
+                });
+            }
+            if (schema.uniqueItems === true) {
+                var values_1 = getNodeValue(node);
+                var duplicates = values_1.some(function (value, index) {
+                    return index !== values_1.lastIndexOf(value);
+                });
+                if (duplicates) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: localize('uniqueItemsWarning', 'Array has duplicate items.')
+                    });
+                }
+            }
+        }
+        function _validateObjectNode(node, schema, validationResult, matchingSchemas) {
+            var seenKeys = Object.create(null);
+            var unprocessedProperties = [];
+            for (var _i = 0, _a = node.properties; _i < _a.length; _i++) {
+                var propertyNode = _a[_i];
+                var key = propertyNode.keyNode.value;
+                seenKeys[key] = propertyNode.valueNode;
+                unprocessedProperties.push(key);
+            }
+            if (Array.isArray(schema.required)) {
+                for (var _b = 0, _c = schema.required; _b < _c.length; _b++) {
+                    var propertyName = _c[_b];
+                    if (!seenKeys[propertyName]) {
+                        var keyNode = node.parent && node.parent.type === 'property' && node.parent.keyNode;
+                        var location = keyNode ? { offset: keyNode.offset, length: keyNode.length } : { offset: node.offset, length: 1 };
+                        validationResult.problems.push({
+                            location: location,
+                            message: localize('MissingRequiredPropWarning', 'Missing property "{0}".', propertyName)
+                        });
+                    }
+                }
+            }
+            var propertyProcessed = function (prop) {
+                var index = unprocessedProperties.indexOf(prop);
+                while (index >= 0) {
+                    unprocessedProperties.splice(index, 1);
+                    index = unprocessedProperties.indexOf(prop);
+                }
+            };
+            if (schema.properties) {
+                for (var _d = 0, _e = Object.keys(schema.properties); _d < _e.length; _d++) {
+                    var propertyName = _e[_d];
+                    propertyProcessed(propertyName);
+                    var propertySchema = schema.properties[propertyName];
+                    var child = seenKeys[propertyName];
+                    if (child) {
+                        if (objects_1.isBoolean(propertySchema)) {
+                            if (!propertySchema) {
+                                var propertyNode = child.parent;
+                                validationResult.problems.push({
+                                    location: { offset: propertyNode.keyNode.offset, length: propertyNode.keyNode.length },
+                                    message: schema.errorMessage || localize('DisallowedExtraPropWarning', 'Property {0} is not allowed.', propertyName)
+                                });
+                            }
+                            else {
+                                validationResult.propertiesMatches++;
+                                validationResult.propertiesValueMatches++;
+                            }
+                        }
+                        else {
+                            var propertyValidationResult = new ValidationResult();
+                            validate(child, propertySchema, propertyValidationResult, matchingSchemas);
+                            validationResult.mergePropertyMatch(propertyValidationResult);
+                        }
+                    }
+                }
+            }
+            if (schema.patternProperties) {
+                for (var _f = 0, _g = Object.keys(schema.patternProperties); _f < _g.length; _f++) {
+                    var propertyPattern = _g[_f];
+                    var regex = strings_1.extendedRegExp(propertyPattern);
+                    for (var _h = 0, _j = unprocessedProperties.slice(0); _h < _j.length; _h++) {
+                        var propertyName = _j[_h];
+                        if (regex.test(propertyName)) {
+                            propertyProcessed(propertyName);
+                            var child = seenKeys[propertyName];
+                            if (child) {
+                                var propertySchema = schema.patternProperties[propertyPattern];
+                                if (objects_1.isBoolean(propertySchema)) {
+                                    if (!propertySchema) {
+                                        var propertyNode = child.parent;
+                                        validationResult.problems.push({
+                                            location: { offset: propertyNode.keyNode.offset, length: propertyNode.keyNode.length },
+                                            message: schema.errorMessage || localize('DisallowedExtraPropWarning', 'Property {0} is not allowed.', propertyName)
+                                        });
+                                    }
+                                    else {
+                                        validationResult.propertiesMatches++;
+                                        validationResult.propertiesValueMatches++;
+                                    }
+                                }
+                                else {
+                                    var propertyValidationResult = new ValidationResult();
+                                    validate(child, propertySchema, propertyValidationResult, matchingSchemas);
+                                    validationResult.mergePropertyMatch(propertyValidationResult);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            if (typeof schema.additionalProperties === 'object') {
+                for (var _k = 0, unprocessedProperties_1 = unprocessedProperties; _k < unprocessedProperties_1.length; _k++) {
+                    var propertyName = unprocessedProperties_1[_k];
+                    var child = seenKeys[propertyName];
+                    if (child) {
+                        var propertyValidationResult = new ValidationResult();
+                        validate(child, schema.additionalProperties, propertyValidationResult, matchingSchemas);
+                        validationResult.mergePropertyMatch(propertyValidationResult);
+                    }
+                }
+            }
+            else if (schema.additionalProperties === false) {
+                if (unprocessedProperties.length > 0) {
+                    for (var _l = 0, unprocessedProperties_2 = unprocessedProperties; _l < unprocessedProperties_2.length; _l++) {
+                        var propertyName = unprocessedProperties_2[_l];
+                        var child = seenKeys[propertyName];
+                        if (child) {
+                            var propertyNode = child.parent;
+                            validationResult.problems.push({
+                                location: { offset: propertyNode.keyNode.offset, length: propertyNode.keyNode.length },
+                                message: schema.errorMessage || localize('DisallowedExtraPropWarning', 'Property {0} is not allowed.', propertyName)
+                            });
+                        }
+                    }
+                }
+            }
+            if (objects_1.isNumber(schema.maxProperties)) {
+                if (node.properties.length > schema.maxProperties) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: localize('MaxPropWarning', 'Object has more properties than limit of {0}.', schema.maxProperties)
+                    });
+                }
+            }
+            if (objects_1.isNumber(schema.minProperties)) {
+                if (node.properties.length < schema.minProperties) {
+                    validationResult.problems.push({
+                        location: { offset: node.offset, length: node.length },
+                        message: localize('MinPropWarning', 'Object has fewer properties than the required number of {0}', schema.minProperties)
+                    });
+                }
+            }
+            if (schema.dependencies) {
+                for (var _m = 0, _o = Object.keys(schema.dependencies); _m < _o.length; _m++) {
+                    var key = _o[_m];
+                    var prop = seenKeys[key];
+                    if (prop) {
+                        var propertyDep = schema.dependencies[key];
+                        if (Array.isArray(propertyDep)) {
+                            for (var _p = 0, propertyDep_1 = propertyDep; _p < propertyDep_1.length; _p++) {
+                                var requiredProp = propertyDep_1[_p];
+                                if (!seenKeys[requiredProp]) {
+                                    validationResult.problems.push({
+                                        location: { offset: node.offset, length: node.length },
+                                        message: localize('RequiredDependentPropWarning', 'Object is missing property {0} required by property {1}.', requiredProp, key)
+                                    });
+                                }
+                                else {
+                                    validationResult.propertiesValueMatches++;
+                                }
+                            }
+                        }
+                        else {
+                            var propertySchema = asSchema(propertyDep);
+                            if (propertySchema) {
+                                var propertyValidationResult = new ValidationResult();
+                                validate(node, propertySchema, propertyValidationResult, matchingSchemas);
+                                validationResult.mergePropertyMatch(propertyValidationResult);
+                            }
+                        }
+                    }
+                }
+            }
+            var propertyNames = asSchema(schema.propertyNames);
+            if (propertyNames) {
+                for (var _q = 0, _r = node.properties; _q < _r.length; _q++) {
+                    var f = _r[_q];
+                    var key = f.keyNode;
+                    if (key) {
+                        validate(key, propertyNames, validationResult, NoOpSchemaCollector.instance);
+                    }
+                }
+            }
+        }
+    }
+    function parse(textDocument, config) {
+        var problems = [];
+        var lastProblemOffset = -1;
+        var text = textDocument.getText();
+        var scanner = Json.createScanner(text, false);
+        var commentRanges = config && config.collectComments ? [] : undefined;
+        function _scanNext() {
+            while (true) {
+                var token_1 = scanner.scan();
+                _checkScanError();
+                switch (token_1) {
+                    case 12 /* LineCommentTrivia */:
+                    case 13 /* BlockCommentTrivia */:
+                        if (Array.isArray(commentRanges)) {
+                            commentRanges.push(jsonLanguageTypes_1.Range.create(textDocument.positionAt(scanner.getTokenOffset()), textDocument.positionAt(scanner.getTokenOffset() + scanner.getTokenLength())));
+                        }
+                        break;
+                    case 15 /* Trivia */:
+                    case 14 /* LineBreakTrivia */:
+                        break;
+                    default:
+                        return token_1;
+                }
+            }
+        }
+        function _accept(token) {
+            if (scanner.getToken() === token) {
+                _scanNext();
+                return true;
+            }
+            return false;
+        }
+        function _errorAtRange(message, code, startOffset, endOffset, severity) {
+            if (severity === void 0) { severity = jsonLanguageTypes_1.DiagnosticSeverity.Error; }
+            if (problems.length === 0 || startOffset !== lastProblemOffset) {
+                var range = jsonLanguageTypes_1.Range.create(textDocument.positionAt(startOffset), textDocument.positionAt(endOffset));
+                problems.push(jsonLanguageTypes_1.Diagnostic.create(range, message, severity, code, textDocument.languageId));
+                lastProblemOffset = startOffset;
+            }
+        }
+        function _error(message, code, node, skipUntilAfter, skipUntil) {
+            if (node === void 0) { node = undefined; }
+            if (skipUntilAfter === void 0) { skipUntilAfter = []; }
+            if (skipUntil === void 0) { skipUntil = []; }
+            var start = scanner.getTokenOffset();
+            var end = scanner.getTokenOffset() + scanner.getTokenLength();
+            if (start === end && start > 0) {
+                start--;
+                while (start > 0 && /\s/.test(text.charAt(start))) {
+                    start--;
+                }
+                end = start + 1;
+            }
+            _errorAtRange(message, code, start, end);
+            if (node) {
+                _finalize(node, false);
+            }
+            if (skipUntilAfter.length + skipUntil.length > 0) {
+                var token_2 = scanner.getToken();
+                while (token_2 !== 17 /* EOF */) {
+                    if (skipUntilAfter.indexOf(token_2) !== -1) {
+                        _scanNext();
+                        break;
+                    }
+                    else if (skipUntil.indexOf(token_2) !== -1) {
+                        break;
+                    }
+                    token_2 = _scanNext();
+                }
+            }
+            return node;
+        }
+        function _checkScanError() {
+            switch (scanner.getTokenError()) {
+                case 4 /* InvalidUnicode */:
+                    _error(localize('InvalidUnicode', 'Invalid unicode sequence in string.'), jsonLanguageTypes_1.ErrorCode.InvalidUnicode);
+                    return true;
+                case 5 /* InvalidEscapeCharacter */:
+                    _error(localize('InvalidEscapeCharacter', 'Invalid escape character in string.'), jsonLanguageTypes_1.ErrorCode.InvalidEscapeCharacter);
+                    return true;
+                case 3 /* UnexpectedEndOfNumber */:
+                    _error(localize('UnexpectedEndOfNumber', 'Unexpected end of number.'), jsonLanguageTypes_1.ErrorCode.UnexpectedEndOfNumber);
+                    return true;
+                case 1 /* UnexpectedEndOfComment */:
+                    _error(localize('UnexpectedEndOfComment', 'Unexpected end of comment.'), jsonLanguageTypes_1.ErrorCode.UnexpectedEndOfComment);
+                    return true;
+                case 2 /* UnexpectedEndOfString */:
+                    _error(localize('UnexpectedEndOfString', 'Unexpected end of string.'), jsonLanguageTypes_1.ErrorCode.UnexpectedEndOfString);
+                    return true;
+                case 6 /* InvalidCharacter */:
+                    _error(localize('InvalidCharacter', 'Invalid characters in string. Control characters must be escaped.'), jsonLanguageTypes_1.ErrorCode.InvalidCharacter);
+                    return true;
+            }
+            return false;
+        }
+        function _finalize(node, scanNext) {
+            node.length = scanner.getTokenOffset() + scanner.getTokenLength() - node.offset;
+            if (scanNext) {
+                _scanNext();
+            }
+            return node;
+        }
+        function _parseArray(parent) {
+            if (scanner.getToken() !== 3 /* OpenBracketToken */) {
+                return undefined;
+            }
+            var node = new ArrayASTNodeImpl(parent, scanner.getTokenOffset());
+            _scanNext(); // consume OpenBracketToken
+            var count = 0;
+            var needsComma = false;
+            while (scanner.getToken() !== 4 /* CloseBracketToken */ && scanner.getToken() !== 17 /* EOF */) {
+                if (scanner.getToken() === 5 /* CommaToken */) {
+                    if (!needsComma) {
+                        _error(localize('ValueExpected', 'Value expected'), jsonLanguageTypes_1.ErrorCode.ValueExpected);
+                    }
+                    var commaOffset = scanner.getTokenOffset();
+                    _scanNext(); // consume comma
+                    if (scanner.getToken() === 4 /* CloseBracketToken */) {
+                        if (needsComma) {
+                            _errorAtRange(localize('TrailingComma', 'Trailing comma'), jsonLanguageTypes_1.ErrorCode.TrailingComma, commaOffset, commaOffset + 1);
+                        }
+                        continue;
+                    }
+                }
+                else if (needsComma) {
+                    _error(localize('ExpectedComma', 'Expected comma'), jsonLanguageTypes_1.ErrorCode.CommaExpected);
+                }
+                var item = _parseValue(node);
+                if (!item) {
+                    _error(localize('PropertyExpected', 'Value expected'), jsonLanguageTypes_1.ErrorCode.ValueExpected, undefined, [], [4 /* CloseBracketToken */, 5 /* CommaToken */]);
+                }
+                else {
+                    node.items.push(item);
+                }
+                needsComma = true;
+            }
+            if (scanner.getToken() !== 4 /* CloseBracketToken */) {
+                return _error(localize('ExpectedCloseBracket', 'Expected comma or closing bracket'), jsonLanguageTypes_1.ErrorCode.CommaOrCloseBacketExpected, node);
+            }
+            return _finalize(node, true);
+        }
+        var keyPlaceholder = new StringASTNodeImpl(undefined, 0, 0);
+        function _parseProperty(parent, keysSeen) {
+            var node = new PropertyASTNodeImpl(parent, scanner.getTokenOffset(), keyPlaceholder);
+            var key = _parseString(node);
+            if (!key) {
+                if (scanner.getToken() === 16 /* Unknown */) {
+                    // give a more helpful error message
+                    _error(localize('DoubleQuotesExpected', 'Property keys must be doublequoted'), jsonLanguageTypes_1.ErrorCode.Undefined);
+                    var keyNode = new StringASTNodeImpl(node, scanner.getTokenOffset(), scanner.getTokenLength());
+                    keyNode.value = scanner.getTokenValue();
+                    key = keyNode;
+                    _scanNext(); // consume Unknown
+                }
+                else {
+                    return undefined;
+                }
+            }
+            node.keyNode = key;
+            var seen = keysSeen[key.value];
+            if (seen) {
+                _errorAtRange(localize('DuplicateKeyWarning', "Duplicate object key"), jsonLanguageTypes_1.ErrorCode.DuplicateKey, node.keyNode.offset, node.keyNode.offset + node.keyNode.length, jsonLanguageTypes_1.DiagnosticSeverity.Warning);
+                if (typeof seen === 'object') {
+                    _errorAtRange(localize('DuplicateKeyWarning', "Duplicate object key"), jsonLanguageTypes_1.ErrorCode.DuplicateKey, seen.keyNode.offset, seen.keyNode.offset + seen.keyNode.length, jsonLanguageTypes_1.DiagnosticSeverity.Warning);
+                }
+                keysSeen[key.value] = true; // if the same key is duplicate again, avoid duplicate error reporting
+            }
+            else {
+                keysSeen[key.value] = node;
+            }
+            if (scanner.getToken() === 6 /* ColonToken */) {
+                node.colonOffset = scanner.getTokenOffset();
+                _scanNext(); // consume ColonToken
+            }
+            else {
+                _error(localize('ColonExpected', 'Colon expected'), jsonLanguageTypes_1.ErrorCode.ColonExpected);
+                if (scanner.getToken() === 10 /* StringLiteral */ && textDocument.positionAt(key.offset + key.length).line < textDocument.positionAt(scanner.getTokenOffset()).line) {
+                    node.length = key.length;
+                    return node;
+                }
+            }
+            var value = _parseValue(node);
+            if (!value) {
+                return _error(localize('ValueExpected', 'Value expected'), jsonLanguageTypes_1.ErrorCode.ValueExpected, node, [], [2 /* CloseBraceToken */, 5 /* CommaToken */]);
+            }
+            node.valueNode = value;
+            node.length = value.offset + value.length - node.offset;
+            return node;
+        }
+        function _parseObject(parent) {
+            if (scanner.getToken() !== 1 /* OpenBraceToken */) {
+                return undefined;
+            }
+            var node = new ObjectASTNodeImpl(parent, scanner.getTokenOffset());
+            var keysSeen = Object.create(null);
+            _scanNext(); // consume OpenBraceToken
+            var needsComma = false;
+            while (scanner.getToken() !== 2 /* CloseBraceToken */ && scanner.getToken() !== 17 /* EOF */) {
+                if (scanner.getToken() === 5 /* CommaToken */) {
+                    if (!needsComma) {
+                        _error(localize('PropertyExpected', 'Property expected'), jsonLanguageTypes_1.ErrorCode.PropertyExpected);
+                    }
+                    var commaOffset = scanner.getTokenOffset();
+                    _scanNext(); // consume comma
+                    if (scanner.getToken() === 2 /* CloseBraceToken */) {
+                        if (needsComma) {
+                            _errorAtRange(localize('TrailingComma', 'Trailing comma'), jsonLanguageTypes_1.ErrorCode.TrailingComma, commaOffset, commaOffset + 1);
+                        }
+                        continue;
+                    }
+                }
+                else if (needsComma) {
+                    _error(localize('ExpectedComma', 'Expected comma'), jsonLanguageTypes_1.ErrorCode.CommaExpected);
+                }
+                var property = _parseProperty(node, keysSeen);
+                if (!property) {
+                    _error(localize('PropertyExpected', 'Property expected'), jsonLanguageTypes_1.ErrorCode.PropertyExpected, undefined, [], [2 /* CloseBraceToken */, 5 /* CommaToken */]);
+                }
+                else {
+                    node.properties.push(property);
+                }
+                needsComma = true;
+            }
+            if (scanner.getToken() !== 2 /* CloseBraceToken */) {
+                return _error(localize('ExpectedCloseBrace', 'Expected comma or closing brace'), jsonLanguageTypes_1.ErrorCode.CommaOrCloseBraceExpected, node);
+            }
+            return _finalize(node, true);
+        }
+        function _parseString(parent) {
+            if (scanner.getToken() !== 10 /* StringLiteral */) {
+                return undefined;
+            }
+            var node = new StringASTNodeImpl(parent, scanner.getTokenOffset());
+            node.value = scanner.getTokenValue();
+            return _finalize(node, true);
+        }
+        function _parseNumber(parent) {
+            if (scanner.getToken() !== 11 /* NumericLiteral */) {
+                return undefined;
+            }
+            var node = new NumberASTNodeImpl(parent, scanner.getTokenOffset());
+            if (scanner.getTokenError() === 0 /* None */) {
+                var tokenValue = scanner.getTokenValue();
+                try {
+                    var numberValue = JSON.parse(tokenValue);
+                    if (!objects_1.isNumber(numberValue)) {
+                        return _error(localize('InvalidNumberFormat', 'Invalid number format.'), jsonLanguageTypes_1.ErrorCode.Undefined, node);
+                    }
+                    node.value = numberValue;
+                }
+                catch (e) {
+                    return _error(localize('InvalidNumberFormat', 'Invalid number format.'), jsonLanguageTypes_1.ErrorCode.Undefined, node);
+                }
+                node.isInteger = tokenValue.indexOf('.') === -1;
+            }
+            return _finalize(node, true);
+        }
+        function _parseLiteral(parent) {
+            var node;
+            switch (scanner.getToken()) {
+                case 7 /* NullKeyword */:
+                    return _finalize(new NullASTNodeImpl(parent, scanner.getTokenOffset()), true);
+                case 8 /* TrueKeyword */:
+                    return _finalize(new BooleanASTNodeImpl(parent, true, scanner.getTokenOffset()), true);
+                case 9 /* FalseKeyword */:
+                    return _finalize(new BooleanASTNodeImpl(parent, false, scanner.getTokenOffset()), true);
+                default:
+                    return undefined;
+            }
+        }
+        function _parseValue(parent) {
+            return _parseArray(parent) || _parseObject(parent) || _parseString(parent) || _parseNumber(parent) || _parseLiteral(parent);
+        }
+        var _root = undefined;
+        var token = _scanNext();
+        if (token !== 17 /* EOF */) {
+            _root = _parseValue(_root);
+            if (!_root) {
+                _error(localize('Invalid symbol', 'Expected a JSON object, array or literal.'), jsonLanguageTypes_1.ErrorCode.Undefined);
+            }
+            else if (scanner.getToken() !== 17 /* EOF */) {
+                _error(localize('End of file expected', 'End of file expected.'), jsonLanguageTypes_1.ErrorCode.Undefined);
+            }
+        }
+        return new JSONDocument(_root, problems, commentRanges);
+    }
+    exports.parse = parse;
+});