85 lines
3.0 KiB
JavaScript
85 lines
3.0 KiB
JavaScript
// The MIT License (MIT)
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//
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// Copyright (c) 2016 Yang Xia
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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'use strict';
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var util = require('util');
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var JsonParser = require('jsonparse');
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exports = module.exports;
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util.inherits(Parser, JsonParser);
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/**
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* Parser Instructor
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*/
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function Parser() {
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this.internalParser = new JsonParser();
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this.originalOnToken = this.internalParser.onToken;
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this.internalParser.onToken = onToken.bind(this);
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return this.internalParser;
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}
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/**
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* Handles the EDM types in the JSON object
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* 1. Number will be treated as Edm.Int32 by default
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* 2. Literal value 1.0 will be treated as Edm.Double
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* 3. Others will be handled according to the literal value
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*/
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var onToken = function (token, value) {
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var self = this;
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var emitString = false;
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function additionalEmit(additionalKey, additionalValue) {
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var oldKey = self.internalParser.key;
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self.internalParser.key = additionalKey;
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self.internalParser.onValue(additionalValue);
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self.internalParser.key = oldKey;
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}
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if (token === JsonParser.C.STRING ||
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token === JsonParser.C.NUMBER ||
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token === JsonParser.C.TRUE ||
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token === JsonParser.C.FALSE ||
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token === JsonParser.C.NULL) {
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// Parser will emit value in these cases
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if (typeof value === 'number' &&
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this.internalParser.string.indexOf('.') != -1 &&
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parseInt(this.internalParser.string) === value &&
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this.internalParser.mode !== JsonParser.C.ARRAY) {
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var typeKey = this.internalParser.key + '@odata.type';
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if (this.internalParser.value) {
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this.internalParser.value[typeKey] = 'Edm.Double';
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}
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additionalEmit(typeKey, 'Edm.Double');
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// Determine whether return raw string to avoid losing precision
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emitString = this.internalParser.string !== value.toString();
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}
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}
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if (emitString) {
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this.originalOnToken.call(this.internalParser, token, this.internalParser.string);
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} else {
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this.originalOnToken.call(this.internalParser, token, value);
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}
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};
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Parser.C = JsonParser.C;
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module.exports = Parser; |