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yangtaeho/codeSpitzS89-2

Last active April 13, 2021 05:58
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s*89-2 과제
Raw
codeSpitzS89-2
const arrayStringify = (arr => {
const quote = str=>`\"${str}\"`;
const _escape = str=>str.replace(/\"/g,'\\\"');
const NULL_STR = 'null';
const _arrayStringify = (arr) => {
let acc = [];
for (const item of arr) {
//const item = obj[k];
//console.log('k', k, 'item', item);
//console.log('item', item);
switch(typeof item) {
case 'undefined':
case 'function':
case 'symbol':
acc.push(NULL_STR);
break;
case 'number':
acc.push(item);
break;
case 'string':
acc.push(quote(_escape(item)));
break;
case 'object':
if (item instanceof Array) {
acc.push('[' + _arrayStringify(item) + ']');
} else if (item == null) {
acc.push(NULL_STR);
}
break;
default:
acc.push(item);
break;
}
}
return acc.join(',');
}
let acc = [];
const arrayStringify = arr => {
acc = [];
if (!arr instanceof Array) {
throw `Invalid argument. ${arr}`;
}
return '[' + _arrayStringify(arr) + ']';
}
return arrayStringify;
})();
const arrayStringifyTail = (arr => {
const quote = str=>`\"${str}\"`;
const _escape = str=>str.replace(/\"/g,'\\\"');
const NULL_STR = 'null';
const _arrayStringify = (arr, acc, i)=>{
if (i < arr.length) {
const item = arr[i];
//const item = obj[k];
//console.log('k', k, 'item', item);
//console.log('item', item);
switch(typeof item) {
case 'undefined':
case 'function':
case 'symbol':
acc.push(NULL_STR);
break;
case 'number':
acc.push(item);
break;
case 'string':
acc.push(quote(_escape(item)));
break;
case 'object':
if (item instanceof Array) {
acc.push('[' + _arrayStringify(item, [], 0) + ']');
} else if (item == null) {
acc.push(NULL_STR);
}
break;
default:
acc.push(item);
break;
}
return _arrayStringify(arr, acc, i + 1);
} else {
return '[' + acc.join(',') + ']';
}
}
let acc = [];
const arrayStringify = arr => {
acc = [];
if (!arr instanceof Array) {
throw `Invalid argument. ${arr}`;
}
return '[' + _arrayStringify(arr, acc, 0) + ']';
}
return arrayStringify;
})();
const arrayStringifyFor = (arr => {
const quote = str=>`\"${str}\"`;
const _escape = str=>str.replace(/\"/g,'\\\"');
const NULL_STR = 'null';
const _arrayStringify = (arr, acc) => {
for (let i = 0; i < arr.length; i = i + 1) {
const item = arr[i];
//const item = obj[k];
//console.log('k', k, 'item', item);
//console.log('item', item);
switch(typeof item) {
case 'undefined':
case 'function':
case 'symbol':
acc.push(NULL_STR);
break;
case 'number':
acc.push(item);
break;
case 'string':
acc.push(quote(_escape(item)));
break;
case 'object':
if (item instanceof Array) {
acc.push('[' + _arrayStringify(item) + ']');
} else if (item == null) {
acc.push(NULL_STR);
}
break;
default:
acc.push(item);
break;
}
}
return '[' + acc.join(',') + ']';
}
let acc = [];
const arrayStringify = arr => {
acc = [];
if (!arr instanceof Array) {
throw `Invalid argument. ${arr}`;
}
return _arrayStringify(arr, acc);
}
return arrayStringify;
})();
const test_stringify = (f, v)=>{
if (!v) return console.log(`Invalid arg. v: '${v}'`);
console.log(`\n[s]${f['name']} :: res: ${f(v) == JSON.stringify(v)}\n`, '\nQUES ', v, '\nJSON ', JSON.stringify(v), '\nSTDY ', f(v), '\n===[e]');
};
test_stringify(arrayStringify, []);
test_stringify(arrayStringify, [,'test', 1]);
test_stringify(arrayStringify, [1, "ab\"c", true, null, _=>3]);
test_stringify(arrayStringify, [1, "ab\"c", true, undefined, null, _=>3, Symbol()]);
test_stringify(arrayStringify, [1, "ab\"c", true, undefined, null, ["ab\"c", true, undefined, null], _=>3, Symbol()]);
test_stringify(arrayStringifyTail, []);
test_stringify(arrayStringifyTail, [,'test', 1]);
test_stringify(arrayStringifyTail, [1, "ab\"c", true, null, _=>3]);
test_stringify(arrayStringifyTail, [1, "ab\"c", true, undefined, null, _=>3, Symbol()]);
test_stringify(arrayStringifyTail, [1, "ab\"c", true, undefined, null, ["ab\"c", true, undefined, null], _=>3, Symbol()]);
test_stringify(arrayStringifyFor, []);
test_stringify(arrayStringifyFor, [,'test', 1]);
test_stringify(arrayStringifyFor, [1, "ab\"c", true, null, _=>3]);
test_stringify(arrayStringifyFor, [1, "ab\"c", true, undefined, null, _=>3, Symbol()]);
test_stringify(arrayStringifyFor, [1, "ab\"c", true, undefined, null, ["ab\"c", true, undefined, null], _=>3, Symbol()]);
Raw
codeSpitzS89-2 210413 개선
// _v0_3_210411 수업 듣고 개선 버전
const stringify210413 = (arr => {
const isDebug =_=>!1;
const quote = str=>`\"${str}\"`;
const _escape = {
table: [[/\"/g,'\\\"']
,[/\t/g, '\\t']
,[/[\r]/g, '\\r']
,[/[\n]/g, '\\n']
,[/[\l]/g, 'l']]
,exe(str){
let acc = str;
for (const item of this.table) {
acc = acc.replace(item[0], item[1]);
}
return acc;
}
};
const NULL_STR = 'null';
const DELIM = ',';
const el = {
table: {
"null":v=>NULL_STR
,'undefined': v=>NULL_STR
,'function': v=>NULL_STR
,'symbol': v=>NULL_STR
,'number': v=>v.toString()
,'string': v=>quote(_escape.exe(v))
,'array': v=>{}//v=>'[' + _arrayStringify(v) + ']'
,'object': v=>NULL_STR
,boolean: v=>v.toString()
},
stringifyRouter(item) {
return (this.table[typeof item] ?? this.table[!item ? NULL_STR : Array.isArray(item) ? "array" : "object"])?.(item) ?? NULL_STR;
}
};
const _arrayStringify = (arr, acc, i)=>{
isDebug() && console.log('debug', i, item, acc);
if (i == arr.length) {
console.log('acc ===> ', acc);
}
return i < arr.length ? acc + _arrayStringify(arr, `,${el.stringifyRouter(arr[i])}`, i + 1) : acc;
};
const arrayStringify = arr => {
if (!arr instanceof Array) {
throw `Invalid argument. ${arr}`;
}
return 0 < arr.length ? '[' + _arrayStringify(arr, '', 0) + ']' : '[]';
};
const _arrayStringifyTail = (arr, acc, i)=>{
const item = arr[i];
return i < arr.length ? _arrayStringifyTail(arr, acc + `,${el.stringifyRouter(item)}`, i + 1) : `${acc.substr(1)}`;
};
const arrayStringifyTail = arr => {
if (!arr instanceof Array) {
throw `Invalid argument. ${arr}`;
}
return 0 < arr.length ? '[' + _arrayStringifyTail(arr, '', 0) + ']' : '[]';
};
const EMPTY = {};
const arrayStringifyFor = arr => {
if (!arr instanceof Array) {
throw `Invalid argument. ${arr}`;
}
let result = EMPTY;
if(arr.length == 0) result = "[]";
else {
let acc = "", i = 0;
while(i < arr.length) {
acc += `,${el.stringifyRouter(arr[i])}`;
i = i + 1; // 바디에서 결정됐지 문에서 계획하지 않았다..
}
result = `[${acc.substr(1)}]`;
}
if (result === EMPTY) throw "no processed";
return result;
};
return {
arrayStringify
, arrayStringifyTail
, arrayStringifyFor
}
})();
const test_stringify = (f, v)=>{
if (!v) return console.log(`Invalid arg. v: '${v}'`);
console.log(`\n[s]${f['name']} ====`
, `\n\tJSON.stringify와 일치: ${f(v) == JSON.stringify(v)}`, (f(v) == JSON.stringify(v) ? '' : '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!')
, '\n\tQ문제 ', v
, '\n\t답안 ', f(v)
, '\n\tJSON.stingify ', JSON.stringify(v)
, '\n[e]========');
};
test_stringify(stringify210413.arrayStringify, []);
test_stringify(stringify210413.arrayStringify, [,'test', 1]);
test_stringify(stringify210413.arrayStringify, [1, "ab\"c", true, null, _=>3]);
test_stringify(stringify210413.arrayStringify, [1, "ab\"\nc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringify, [1, "ab\"\rc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringify, [1, "ab\"\lc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringify, [1, "ab\"\r\nc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringify, [1, "ab\"c", true, undefined, null, _=>3, Symbol()]);
test_stringify(stringify210413.arrayStringify, [1, "ab\"c", true, undefined, null, ["ab\"c", true, undefined, null], _=>3, Symbol()]);
test_stringify(stringify210413.arrayStringifyTail, []);
test_stringify(stringify210413.arrayStringifyTail, [,'test', 1]);
test_stringify(stringify210413.arrayStringifyTail, [1, "ab\"c", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyTail, [1, "ab\"\nc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyTail, [1, "ab\"\rc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyTail, [1, "ab\"\lc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyTail, [1, "ab\"\r\nc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyTail, [1, "ab\"c", true, undefined, null, _=>3, Symbol()]);
test_stringify(stringify210413.arrayStringifyTail, [1, "ab\"c", true, undefined, null, ["ab\"c", true, undefined, null], _=>3, Symbol()]);
test_stringify(stringify210413.arrayStringifyFor, []);
test_stringify(stringify210413.arrayStringifyFor, [,'test', 1]);
test_stringify(stringify210413.arrayStringifyFor, [1, "ab\"c", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyFor, [1, "ab\"\nc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyFor, [1, "ab\"\rc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyFor, [1, "ab\"\lc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyFor, [1, "ab\"\r\nc", true, null, _=>3]);
test_stringify(stringify210413.arrayStringifyFor, [1, "ab\"c", true, undefined, null, _=>3, Symbol()]);
test_stringify(stringify210413.arrayStringifyFor, [1, "ab\"c", true, undefined, null, ["ab\"c", true, undefined, null], _=>3, Symbol()]);
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