Your IP : 216.73.216.86
import { TextParser, isDelimiter, TokenTree } from 'ui.text-parser';
import { type Smiley } from './smiley';
export class SmileyParser
{
#splitOffsets: Array<{ start: number, end: number }> = [];
#tokenTree: TokenTree = null;
#textParser: TextParser = null;
constructor(smileys: Smiley[])
{
this.#tokenTree = new TokenTree();
smileys.forEach((smiley: Smiley) => {
this.#tokenTree.addToken(smiley.getTyping());
});
}
parse(text: string): Array<{ start: number, end: number }>
{
this.#splitOffsets = [];
this.#textParser = new TextParser(text);
while (this.#textParser.hasNext())
{
let success = false;
success = success || this.#parseEmoji();
success = success || this.#parseSmileys();
success = success || this.#textParser.consumeText();
}
return this.#splitOffsets;
}
#parseSmileys(): boolean
{
if (this.#isWordBoundary())
{
return this.#textParser.tryChangePosition(() => {
const currentPosition = this.#textParser.getCurrentPosition();
if (this.#consumeSmiley() && this.#isNextWordBoundary())
{
this.#splitOffsets.push({
start: currentPosition,
end: this.#textParser.getCurrentPosition(),
});
this.#textParser.flushText();
return true;
}
return false;
});
}
return false;
}
#consumeSmiley(): boolean
{
return this.#textParser.consumeTree(this.#tokenTree.getTreeIndex());
}
#isWordBoundary(): boolean
{
if (!this.#textParser.hasPendingText())
{
const last = this.#splitOffsets.at(-1);
if (last && last.end === this.#textParser.getCurrentPosition())
{
return true;
}
}
return this.#textParser.isWordBoundary();
}
#isNextWordBoundary(): boolean
{
let isSmileyNext = false;
this.#textParser.tryChangePosition(() => {
if (this.#consumeSmiley())
{
isSmileyNext = true;
}
return false;
});
if (isSmileyNext)
{
return true;
}
return isDelimiter(this.#textParser.peek());
}
#parseEmoji(): boolean
{
return false;
}
}