将方法作为类内另一个方法的参数传递时出现错误

Question

class Parser {
	private tokens: Array<ITokenized>
	private token_index: number;
	private current_token: ITokenized | undefined;

	constructor(tokens: Array<ITokenized>) {
		// console.log(tokens);
		this.tokens = tokens
		this.token_index = -1;
		this.current_token = undefined
		this.next()
	}

	next() {
		this.token_index += 1;
		if (this.token_index < this.tokens.length) {
			this.current_token = this.tokens[this.token_index]
		}
		return this.current_token
	}

	public parse(): any {
		let result = this.expression();
		return result;
	}

	private factor() {
		let token = this.current_token
		if ([TOK_INT, TOK_FLOAT].includes(token?.dataType)) {
			this.next();
			return new NumberNode(token?.value).represent();
		}
	}

	private term() {
		return this.binaryOperation(this.factor, [TOK_MULTI, TOK_DIVI])
	}

	private expression() {
		return this.binaryOperation(this.term, [TOK_PLUS, TOK_MINUS])
	}

	public binaryOperation(func: Function, operator: Array<string>) {
		let leftNode, operationToken, rightNode;
		leftNode = func()
		while (operator.includes(this.current_token?.dataType)) {
			operationToken = this.current_token;
			this.next();
			rightNode = func()
			leftNode = new BinaryOperator(leftNode, operationToken?.dataType, rightNode).represent();
		}

		return leftNode;
	}
}


export default Parser;

F：\ Programming-Files \ hello-world \ dev-projects \ puCpp-programming-language \ src \ parser \ Parser.ts：69返回this.binaryOperation（this.factor，[TOK_MULTI，TOK_DIVI]）^ TypeError：无法读取未定义的属性“ binaryOperation”在Parser.term（F：\ Programming-Files \ hello-world \ dev-projects \ puCpp-programming-language \ src \ parser \ Parser.ts：69：15）在Parser.binaryOperation（F：\ Programming-Files \ hello-world \ dev-projects \ puCpp-programming-language \ src \ parser \ Parser.ts：78：14）在Parser.expression（F：\ Programming-Files \ hello-world \ dev-projects \ puCpp-programming-language \ src \ parser \ Parser.ts：73：15）在Parser.parse（F：\ Programming-Files \ hello-world \ dev-projects \ puCpp-programming-language \ src \ parser \ Parser.ts：56：21）在Runner.start上（F：\ Programming-Files \ hello-world \ dev-projects \ puCpp-programming-language \ src \ lexer \ Runner.ts：21：26）在F：\ Programming-Files \ hello-world \ dev-projects \ puCpp-programming-language \ src \ index.ts：25：46在Interface._onLine（readline.js：306：5）在Interface._line（readline.js：656：8）在Interface._ttyWrite（readline.js：937：14）在Socket.onkeypress（readline.js：184：10）

Answer 1

尝试显式绑定您的函数参数：

private term() {
        return this.binaryOperation(this.factor.bind(this), [TOK_MULTI, TOK_DIVI])
    }

private expression() {
        return this.binaryOperation(this.term.bind(this), [TOK_PLUS, TOK_MINUS])
    }