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Changeset: Turn `stringAssembler()` into a real class

rhansen-changeset
Richard Hansen 2021-10-16 21:42:41 -04:00
parent 3fe2b17094
commit 2d0e393839
1 changed files with 15 additions and 18 deletions
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33
src/static/js/Changeset.js
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@ -717,24 +717,21 @@ exports.stringIterator = (str) => {
/**
* A custom made StringBuffer
*
* @typedef {object} StringAssembler
* @property {Function} append -
* @property {Function} toString -
*/
class StringAssembler {
constructor() { this.clear(); }
clear() { this._str = ''; }
/**
* @param {string} x -
*/
append(x) { this._str += String(x); }
toString() { return this._str; }
}
/**
* @returns {StringAssembler}
*/
exports.stringAssembler = () => ({
_str: '',
clear() { this._str = ''; },
/**
* @param {string} x -
*/
append(x) { this._str += String(x); },
toString() { return this._str; },
});
exports.stringAssembler = () => new StringAssembler();
/**
* @typedef {object} StringArrayLike
@ -1161,7 +1158,7 @@ exports.applyToText = (cs, str) => {
assert(str.length === unpacked.oldLen, `mismatched apply: ${str.length} / ${unpacked.oldLen}`);
const bankIter = exports.stringIterator(unpacked.charBank);
const strIter = exports.stringIterator(str);
const assem = exports.stringAssembler();
const assem = new StringAssembler();
for (const op of exports.deserializeOps(unpacked.ops)) {
switch (op.opcode) {
case '+':
@ -1480,7 +1477,7 @@ exports.compose = (cs1, cs2, pool) => {
const len3 = unpacked2.newLen;
const bankIter1 = exports.stringIterator(unpacked1.charBank);
const bankIter2 = exports.stringIterator(unpacked2.charBank);
const bankAssem = exports.stringAssembler();
const bankAssem = new StringAssembler();
const newOps = applyZip(unpacked1.ops, unpacked2.ops, (op1, op2) => {
const op1code = op1.opcode;
@ -1923,7 +1920,7 @@ class Builder {
constructor(oldLen) {
this._oldLen = oldLen;
this._ops = [];
this._charBank = exports.stringAssembler();
this._charBank = new StringAssembler();
}
/**
@ -2184,7 +2181,7 @@ exports.inverse = (cs, lines, alines, pool) => {
const nextText = (numChars) => {
let len = 0;
const assem = exports.stringAssembler();
const assem = new StringAssembler();
const firstString = linesGet(curLine).substring(curChar);
len += firstString.length;
assem.append(firstString);
@ -2410,7 +2407,7 @@ const followAttributes = (att1, att2, pool) => {
return '';
});
// we've only removed attributes, so they're already sorted
const buf = exports.stringAssembler();
const buf = new StringAssembler();
for (const att of atts) {
buf.append('*');
buf.append(exports.numToString(pool.putAttrib(att)));