parse.js

'use strict';Object.defineProperty(exports,'__esModule',{value:true});var _typeof=typeof Symbol==='function'&&typeof Symbol.iterator==='symbol'?function(obj){return typeof obj}:function(obj){return obj&&typeof Symbol==='function'&&obj.constructor===Symbol&&obj!==Symbol.prototype?'symbol':typeof obj};exports.default=parse;var _util=require('./util');var util=_interopRequireWildcard(_util);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key]}}newObj.default=obj;return newObj}}var source=void 0;var parseState=void 0;var stack=void 0;var pos=void 0;var line=void 0;var column=void 0;var token=void 0;var key=void 0;var root=void 0;function parse(text,reviver){source=String(text);parseState='start';stack=[];pos=0;line=1;column=0;token=undefined;key=undefined;root=undefined;do{token=lex();parseStates[parseState]()}while(token.type!=='eof');if(typeof reviver==='function'){return internalize({'':root},'',reviver)}return root}function internalize(holder,name,reviver){var value=holder[name];if(value!=null&&(typeof value==='undefined'?'undefined':_typeof(value))==='object'){if(Array.isArray(value)){for(var i=0;i<value.length;i++){var _key=String(i);var replacement=internalize(value,_key,reviver);if(replacement===undefined){delete value[_key]}else{Object.defineProperty(value,_key,{value:replacement,writable:true,enumerable:true,configurable:true})}}}else{for(var _key2 in value){var _replacement=internalize(value,_key2,reviver);if(_replacement===undefined){delete value[_key2]}else{Object.defineProperty(value,_key2,{value:_replacement,writable:true,enumerable:true,configurable:true})}}}}return reviver.call(holder,name,value)}var lexState=void 0;var buffer=void 0;var doubleQuote=void 0;var _sign=void 0;var c=void 0;function lex(){lexState='default';buffer='';doubleQuote=false;_sign=1;for(;;){c=peek();var _token=lexStates[lexState]();if(_token){return _token}}}function peek(){if(source[pos]){return String.fromCodePoint(source.codePointAt(pos))}}function read(){var c=peek();if(c==='\n'){line++;column=0}else if(c){column+=c.length}else{column++}if(c){pos+=c.length}return c}var lexStates={default:function _default(){switch(c){case'\t':case'\x0B':case'\f':case' ':case'\xA0':case'\uFEFF':case'\n':case'\r':case'\u2028':case'\u2029':read();return;case'/':read();lexState='comment';return;case undefined:read();return newToken('eof');}if(util.isSpaceSeparator(c)){read();return}return lexStates[parseState]()},comment:function comment(){switch(c){case'*':read();lexState='multiLineComment';return;case'/':read();lexState='singleLineComment';return;}throw invalidChar(read())},multiLineComment:function multiLineComment(){switch(c){case'*':read();lexState='multiLineCommentAsterisk';return;case undefined:throw invalidChar(read());}read()},multiLineCommentAsterisk:function multiLineCommentAsterisk(){switch(c){case'*':read();return;case'/':read();lexState='default';return;case undefined:throw invalidChar(read());}read();lexState='multiLineComment'},singleLineComment:function singleLineComment(){switch(c){case'\n':case'\r':case'\u2028':case'\u2029':read();lexState='default';return;case undefined:read();return newToken('eof');}read()},value:function value(){switch(c){case'{':case'[':return newToken('punctuator',read());case'n':read();literal('ull');return newToken('null',null);case't':read();literal('rue');return newToken('boolean',true);case'f':read();literal('alse');return newToken('boolean',false);case'-':case'+':if(read()==='-'){_sign=-1}lexState='sign';return;case'.':buffer=read();lexState='decimalPointLeading';return;case'0':buffer=read();lexState='zero';return;case'1':case'2':case'3':case'4':case'5':case'6':case'7':case'8':case'9':buffer=read();lexState='decimalInteger';return;case'I':read();literal('nfinity');return newToken('numeric',Infinity);case'N':read();literal('aN');return newToken('numeric',NaN);case'"':case'\'':doubleQuote=read()==='"';buffer='';lexState='string';return;}throw invalidChar(read())},identifierNameStartEscape:function identifierNameStartEscape(){if(c!=='u'){throw invalidChar(read())}read();var u=unicodeEscape();switch(u){case'$':case'_':break;default:if(!util.isIdStartChar(u)){throw invalidIdentifier()}break;}buffer+=u;lexState='identifierName'},identifierName:function identifierName(){switch(c){case'$':case'_':case'\u200C':case'\u200D':buffer+=read();return;case'\\':read();lexState='identifierNameEscape';return;}if(util.isIdContinueChar(c)){buffer+=read();return}return newToken('identifier',buffer)},identifierNameEscape:function identifierNameEscape(){if(c!=='u'){throw invalidChar(read())}read();var u=unicodeEscape();switch(u){case'$':case'_':case'\u200C':case'\u200D':break;default:if(!util.isIdContinueChar(u)){throw invalidIdentifier()}break;}buffer+=u;lexState='identifierName'},sign:function sign(){switch(c){case'.':buffer=read();lexState='decimalPointLeading';return;case'0':buffer=read();lexState='zero';return;case'1':case'2':case'3':case'4':case'5':case'6':case'7':case'8':case'9':buffer=read();lexState='decimalInteger';return;case'I':read();literal('nfinity');return newToken('numeric',_sign*Infinity);case'N':read();literal('aN');return newToken('numeric',NaN);}throw invalidChar(read())},zero:function zero(){switch(c){case'.':buffer+=read();lexState='decimalPoint';return;case'e':case'E':buffer+=read();lexState='decimalExponent';return;case'x':case'X':buffer+=read();lexState='hexadecimal';return;}return newToken('numeric',_sign*0)},decimalInteger:function decimalInteger(){switch(c){case'.':buffer+=read();lexState='decimalPoint';return;case'e':case'E':buffer+=read();lexState='decimalExponent';return;}if(util.isDigit(c)){buffer+=read();return}return newToken('numeric',_sign*Number(buffer))},decimalPointLeading:function decimalPointLeading(){if(util.isDigit(c)){buffer+=read();lexState='decimalFraction';return}throw invalidChar(read())},decimalPoint:function decimalPoint(){switch(c){case'e':case'E':buffer+=read();lexState='decimalExponent';return;}if(util.isDigit(c)){buffer+=read();lexState='decimalFraction';return}return newToken('numeric',_sign*Number(buffer))},decimalFraction:function decimalFraction(){switch(c){case'e':case'E':buffer+=read();lexState='decimalExponent';return;}if(util.isDigit(c)){buffer+=read();return}return newToken('numeric',_sign*Number(buffer))},decimalExponent:function decimalExponent(){switch(c){case'+':case'-':buffer+=read();lexState='decimalExponentSign';return;}if(util.isDigit(c)){buffer+=read();lexState='decimalExponentInteger';return}throw invalidChar(read())},decimalExponentSign:function decimalExponentSign(){if(util.isDigit(c)){buffer+=read();lexState='decimalExponentInteger';return}throw invalidChar(read())},decimalExponentInteger:function decimalExponentInteger(){if(util.isDigit(c)){buffer+=read();return}return newToken('numeric',_sign*Number(buffer))},hexadecimal:function hexadecimal(){if(util.isHexDigit(c)){buffer+=read();lexState='hexadecimalInteger';return}throw invalidChar(read())},hexadecimalInteger:function hexadecimalInteger(){if(util.isHexDigit(c)){buffer+=read();return}return newToken('numeric',_sign*Number(buffer))},string:function string(){switch(c){case'\\':read();buffer+=escape();return;case'"':if(doubleQuote){read();return newToken('string',buffer)}buffer+=read();return;case'\'':if(!doubleQuote){read();return newToken('string',buffer)}buffer+=read();return;case'\n':case'\r':throw invalidChar(read());case'\u2028':case'\u2029':separatorChar(c);break;case undefined:throw invalidChar(read());}buffer+=read()},start:function start(){switch(c){case'{':case'[':return newToken('punctuator',read());}lexState='value'},beforePropertyName:function beforePropertyName(){switch(c){case'$':case'_':buffer=read();lexState='identifierName';return;case'\\':read();lexState='identifierNameStartEscape';return;case'}':return newToken('punctuator',read());case'"':case'\'':doubleQuote=read()==='"';lexState='string';return;}if(util.isIdStartChar(c)){buffer+=read();lexState='identifierName';return}throw invalidChar(read())},afterPropertyName:function afterPropertyName(){if(c===':'){return newToken('punctuator',read())}throw invalidChar(read())},beforePropertyValue:function beforePropertyValue(){lexState='value'},afterPropertyValue:function afterPropertyValue(){switch(c){case',':case'}':return newToken('punctuator',read());}throw invalidChar(read())},beforeArrayValue:function beforeArrayValue(){if(c===']'){return newToken('punctuator',read())}lexState='value'},afterArrayValue:function afterArrayValue(){switch(c){case',':case']':return newToken('punctuator',read());}throw invalidChar(read())},end:function end(){throw invalidChar(read())}};function newToken(type,value){return{type:type,value:value,line:line,column:column}}function literal(s){var _iteratorNormalCompletion=true;var _didIteratorError=false;var _iteratorError=undefined;try{for(var _iterator=s[Symbol.iterator](),_step;!(_iteratorNormalCompletion=(_step=_iterator.next()).done);_iteratorNormalCompletion=true){var _c=_step.value;var p=peek();if(p!==_c){throw invalidChar(read())}read()}}catch(err){_didIteratorError=true;_iteratorError=err}finally{try{if(!_iteratorNormalCompletion&&_iterator.return){_iterator.return()}}finally{if(_didIteratorError){throw _iteratorError}}}}function escape(){var c=peek();switch(c){case'b':read();return'\b';case'f':read();return'\f';case'n':read();return'\n';case'r':read();return'\r';case't':read();return'\t';case'v':read();return'\x0B';case'0':read();if(util.isDigit(peek())){throw invalidChar(read())}return'\0';case'x':read();return hexEscape();case'u':read();return unicodeEscape();case'\n':case'\u2028':case'\u2029':read();return'';case'\r':read();if(peek()==='\n'){read()}return'';case'1':case'2':case'3':case'4':case'5':case'6':case'7':case'8':case'9':throw invalidChar(read());case undefined:throw invalidChar(read());}return read()}function hexEscape(){var buffer='';var c=peek();if(!util.isHexDigit(c)){throw invalidChar(read())}buffer+=read();c=peek();if(!util.isHexDigit(c)){throw invalidChar(read())}buffer+=read();return String.fromCodePoint(parseInt(buffer,16))}function unicodeEscape(){var buffer='';var count=4;while(count-->0){var _c2=peek();if(!util.isHexDigit(_c2)){throw invalidChar(read())}buffer+=read()}return String.fromCodePoint(parseInt(buffer,16))}var parseStates={start:function start(){if(token.type==='eof'){throw invalidEOF()}push()},beforePropertyName:function beforePropertyName(){switch(token.type){case'identifier':case'string':key=token.value;parseState='afterPropertyName';return;case'punctuator':pop();return;case'eof':throw invalidEOF();}},afterPropertyName:function afterPropertyName(){if(token.type==='eof'){throw invalidEOF()}parseState='beforePropertyValue'},beforePropertyValue:function beforePropertyValue(){if(token.type==='eof'){throw invalidEOF()}push()},beforeArrayValue:function beforeArrayValue(){if(token.type==='eof'){throw invalidEOF()}if(token.type==='punctuator'&&token.value===']'){pop();return}push()},afterPropertyValue:function afterPropertyValue(){if(token.type==='eof'){throw invalidEOF()}switch(token.value){case',':parseState='beforePropertyName';return;case'}':pop();}},afterArrayValue:function afterArrayValue(){if(token.type==='eof'){throw invalidEOF()}switch(token.value){case',':parseState='beforeArrayValue';return;case']':pop();}},end:function end(){}};function push(){var value=void 0;switch(token.type){case'punctuator':switch(token.value){case'{':value={};break;case'[':value=[];break;}break;case'null':case'boolean':case'numeric':case'string':value=token.value;break;}if(root===undefined){root=value}else{var parent=stack[stack.length-1];if(Array.isArray(parent)){parent.push(value)}else{Object.defineProperty(parent,key,{value:value,writable:true,enumerable:true,configurable:true})}}if(value!==null&&(typeof value==='undefined'?'undefined':_typeof(value))==='object'){stack.push(value);if(Array.isArray(value)){parseState='beforeArrayValue'}else{parseState='beforePropertyName'}}else{var current=stack[stack.length-1];if(current==null){parseState='end'}else if(Array.isArray(current)){parseState='afterArrayValue'}else{parseState='afterPropertyValue'}}}function pop(){stack.pop();var current=stack[stack.length-1];if(current==null){parseState='end'}else if(Array.isArray(current)){parseState='afterArrayValue'}else{parseState='afterPropertyValue'}}function invalidChar(c){if(c===undefined){return syntaxError('JSON5: invalid end of input at '+line+':'+column)}return syntaxError('JSON5: invalid character \''+formatChar(c)+'\' at '+line+':'+column)}function invalidEOF(){return syntaxError('JSON5: invalid end of input at '+line+':'+column)}function invalidIdentifier(){column-=5;return syntaxError('JSON5: invalid identifier character at '+line+':'+column)}function separatorChar(c){console.warn('JSON5: \''+c+'\' is not valid ECMAScript; consider escaping')}function formatChar(c){var replacements={'\'':'\\\'','"':'\\"','\\':'\\\\','\b':'\\b','\f':'\\f','\n':'\\n','\r':'\\r','\t':'\\t','\x0B':'\\v','\0':'\\0','\u2028':'\\u2028','\u2029':'\\u2029'};if(replacements[c]){return replacements[c]}if(c<' '){var hexString=c.charCodeAt(0).toString(16);return'\\x'+('00'+hexString).substring(hexString.length)}return c}function syntaxError(message){var err=new SyntaxError(message);err.lineNumber=line;err.columnNumber=column;return err}module.exports=exports['default'];