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適当にJavascriptで型チェック
function TypeCheck(func) {
var argumentTypes = [];
var functionString = func.toString().replace(/\n/g, ' ');
var argumentString = functionString.replace(/^function.*?\(/, '').replace(/\).*$/,'');
var argumentTypes = argumentString.split(',');
for(var i=0,l=argumentTypes.length; i<l; i++) {
var match = argumentTypes[i].match(/\/\*\*(.*)\*\//);
if(match) {
argumentTypes[i] = match[1].replace(/^ *| *$/g,'').toLowerCase();
} else {
argumentTypes[i] = null;
}
};
var newFunction = function() {
var argsSize = arguments.length;
if (argsSize != argumentTypes.length) {
throw new Error("引数の数が不正です: " + argsSize + "/" + argumentTypes.length);
}
for(var i=0; i < argsSize; i++) {
var type = argumentTypes[i];
if(!type) continue;
var arg = arguments[i];
if (typeof arg != type) {
throw new Error("引数の型が不正です: "+ (typeof arg) + "/" + type);
}
}
newFunction.originalFunction.apply(null, arguments);
};
newFunction.originalFunction = func;
return newFunction;
};
var localVar = 1;
var testFunction = function(int/** Number */, string/** String */, any) {
console.log(localVar, int, string, any);
};
localVar = "Called: ";
testFunction(1, 'string');
typeCheckingTestFunction = new TypeCheck(testFunction);
try{
typeCheckingTestFunction(1, 'string');
}catch(e) {
console.log(e.message);
};
try{
typeCheckingTestFunction(1, 2, null);
}catch(e) {
console.log(e.message);
};
typeCheckingTestFunction(1, "str", 1);
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