Assist programmers in hooking code into callbacks.
此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.greasyfork.icu/scripts/429237/949518/CallbackEditor.js
// ==UserScript==
// @name CallbackEditor
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Assist programmers in hooking code into callbacks.
// @author MTP3
// @match http://*/*
// @icon https://www.google.com/s2/favicons?domain=manyland.com
// @grant none
// ==/UserScript==
/*
CallbackEditor by MTP3
edit callbacks without necessarily having to deal with terrible string manipulation directly™
CallbackEditor.prototype
disassemble(Function func): Object funcobj
Converts a function into a form that CallbackEditor can manipulate
reassemble(Object funcobj): Function func
Converts a funcobj generated by this.disassemble back to a new Function.
toFuncString(Object funcobj): String string
Returns a string that defines an anonymous arrow function with the funcobj's arguments and code.
funcToString(Function func): String string
Returns a string that defines an anonymous arrow function with the function's arguments and code.
Disassembles func and runs this.toFuncString with the resulting funcobj.
getCallString(String str, String args): String string
getCallString(String str, Array args): String string
Appends `args` to str, surrounded with parentheses. This creates a function call when converted to code.
`args` is treated like in 'new Function(args, code)'.
! Actual functions that I expect people to call.
prepend(Function func, String string): Function func
Prepends an arbitrary string to the beginning of the function.
Automatically appends a semicolon during concatenation.
append(Function func, String string): Function func
Appends an arbitrary string to the end of the function.
Automatically prepends a semicolon during concatenation.
callBefore(Function func, String funcref, String args): Function func
callBefore(Function func, String funcref, Array args): Function func
Prepends a function call to the beginning of `func`. Does not overwrite the original reference.
`funcref` is expected to be a path to the function accessible from the calling function.
`args` is treated like in 'new Function(args, code)'.
callAfter(Function func, String funcref, String args): Function func
callAfter(Function func, String funcref, Array args): Function func
Appends a function call to the end of `func`. Does not overwrite the original reference.
`funcref` is expected to be a path to the Function variable accessible from the calling function.
`args` is treated like in 'new Function(args, code)'.
runBefore(Function func, Function func2, String args): Function func
runBefore(Function func, Function func2, Array args): Function func
Prepends a copy of `func2` to the beginning of `func`. Does not overwrite the original reference.
`func2` inherits `func`'s scope.
`args` is treated like in 'new Function(args, code)'.
runAfter(Function func, Function func2, String args): Function func
runAfter(Function func, Function func2, Array args): Function func
Appends a copy of `func2` to the end of `func`. Does not overwrite the original reference.
`func2` inherits `func`'s scope.
`args` is treated like in 'new Function(args, code)'.
*/
if (typeof window.CallbackEditor === "undefined") {
window.CallbackEditor = class {
constructor() {
let _console = consoleref;
if (typeof _console === "undefined")
_console = console;
_console.log("%c loaded CallbackEditor by MTP3 ", "background: #aa7700; color: #ffff00");
}
disassemble(func) { /* Split up a function into strings for manipulation. */
let code = func.toString();
return {
argumentStr: code.slice(code.indexOf("(") + 1, code.indexOf(")")),
code: code.slice(code.indexOf("{") + 1, -1)
}
};
reassemble(funcobj) { /* Generate a new function from a disassembled function. */
return new Function(funcobj.argumentStr, funcobj.code);
};
toFuncString(funcobj) { /* Generate a stringified function from a disassembled function. */
return "(" + funcobj.argumentStr + ")=>{" + funcobj.code + "}";
};
funcToString(func) { /* Stringify a function. */
return this.toFuncString(this.disassemble(func));
};
getCallString(str, args) { /* Append function call syntax to a string, using an argument list. */
let argstr;
if (typeof args === "undefined")
argstr = "";
else
argstr = args.toString();
return str + `(${argstr})`;
};
prepend(func, string) { /* Prepend arbitrary text to the beginning of a function. */
let funcobj = this.disassemble(func);
funcobj.code = string + ";" + funcobj.code;
return this.reassemble(funcobj);
};
append(func, string) { /* Append arbitrary text to the end of a function. */
let funcobj = this.disassemble(func);
funcobj.code += ";" + string;
return this.reassemble(funcobj);
};
callBefore(func, funcref, args) { /* Prepend arbitrary function call to the beginning of a function. */
return this.prepend(func, this.getCallString(funcref, args));
};
callAfter(func, funcref, args) { /* Append arbitrary function call to the end of a function. */
return this.append(func, this.getCallString(funcref, args));
};
runBefore(func, func2, args) { /* Prepend arbitrary code to the beginning of a function. */
return this.prepend(func, this.getCallString("(" + this.funcToString(func2) + ")", args));
};
runAfter(func, func2, args) { /* Append arbitrary code to the end of a function. */
return this.append(func, this.getCallString("(" + this.funcToString(func2) + ")", args));
};
};
window.callbackEditor = new CallbackEditor;
}