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AttributePool: Use ES6 class syntax

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This commit is contained in:
Richard Hansen 2021-10-22 21:59:03 -04:00
parent bbc8b29ffd
commit c98b521539
1 changed files with 56 additions and 55 deletions
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111
src/static/js/AttributePool.js
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@ -29,69 +29,70 @@
used to reference Attributes in Changesets. used to reference Attributes in Changesets.
*/ */
const AttributePool = function () { class AttributePool {
this.numToAttrib = {}; // e.g. {0: ['foo','bar']} constructor() {
this.attribToNum = {}; // e.g. {'foo,bar': 0} this.numToAttrib = {}; // e.g. {0: ['foo','bar']}
this.nextNum = 0; this.attribToNum = {}; // e.g. {'foo,bar': 0}
}; this.nextNum = 0;
AttributePool.prototype.putAttrib = function (attrib, dontAddIfAbsent) {
const str = String(attrib);
if (str in this.attribToNum) {
return this.attribToNum[str];
} }
if (dontAddIfAbsent) {
return -1; putAttrib(attrib, dontAddIfAbsent = false) {
const str = String(attrib);
if (str in this.attribToNum) {
return this.attribToNum[str];
}
if (dontAddIfAbsent) {
return -1;
}
const num = this.nextNum++;
this.attribToNum[str] = num;
this.numToAttrib[num] = [String(attrib[0] || ''), String(attrib[1] || '')];
return num;
} }
const num = this.nextNum++;
this.attribToNum[str] = num;
this.numToAttrib[num] = [String(attrib[0] || ''), String(attrib[1] || '')];
return num;
};
AttributePool.prototype.getAttrib = function (num) { getAttrib(num) {
const pair = this.numToAttrib[num]; const pair = this.numToAttrib[num];
if (!pair) { if (!pair) {
return pair; return pair;
}
return [pair[0], pair[1]]; // return a mutable copy
} }
return [pair[0], pair[1]]; // return a mutable copy
};
AttributePool.prototype.getAttribKey = function (num) { getAttribKey(num) {
const pair = this.numToAttrib[num]; const pair = this.numToAttrib[num];
if (!pair) return ''; if (!pair) return '';
return pair[0]; return pair[0];
};
AttributePool.prototype.getAttribValue = function (num) {
const pair = this.numToAttrib[num];
if (!pair) return '';
return pair[1];
};
AttributePool.prototype.eachAttrib = function (func) {
for (const n of Object.keys(this.numToAttrib)) {
const pair = this.numToAttrib[n];
func(pair[0], pair[1]);
} }
};
AttributePool.prototype.toJsonable = function () { getAttribValue(num) {
return { const pair = this.numToAttrib[num];
numToAttrib: this.numToAttrib, if (!pair) return '';
nextNum: this.nextNum, return pair[1];
};
};
AttributePool.prototype.fromJsonable = function (obj) {
this.numToAttrib = obj.numToAttrib;
this.nextNum = obj.nextNum;
this.attribToNum = {};
for (const n of Object.keys(this.numToAttrib)) {
this.attribToNum[String(this.numToAttrib[n])] = Number(n);
} }
return this;
};
eachAttrib(func) {
for (const n of Object.keys(this.numToAttrib)) {
const pair = this.numToAttrib[n];
func(pair[0], pair[1]);
}
}
toJsonable() {
return {
numToAttrib: this.numToAttrib,
nextNum: this.nextNum,
};
}
fromJsonable(obj) {
this.numToAttrib = obj.numToAttrib;
this.nextNum = obj.nextNum;
this.attribToNum = {};
for (const n of Object.keys(this.numToAttrib)) {
this.attribToNum[String(this.numToAttrib[n])] = Number(n);
}
return this;
}
}
module.exports = AttributePool; module.exports = AttributePool;