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Error Handling & Exception Guarding

● STABLE(Structured exception guarding with try, catch, and throw statements)

AdeshLang provides exception handling constructs (try, catch, throw) to raise, intercept, and gracefully recover from runtime errors.

1. Throwing & Catching Exceptions​

Exceptions interrupt normal execution flow. Catch blocks intercept exceptions and expose error payload objects.

Code Example​

fn validateAge(age: i32) {
    if age < 0 {
        throw "InvalidAgeError: age cannot be negative";
    }
    if age < 18 {
        throw "UnderageError: access restricted to adults";
    }
    return "Access Granted";
}

fn tryProcess(inputAge: i32) {
    try {
        let status = validateAge(inputAge);
        print("Success:", status);
    } catch (err) {
        print("Caught Exception ->", err);
    }
}

tryProcess(25);
tryProcess(-5);
tryProcess(15);

Terminal Output​

Success: Access Granted
Caught Exception -> InvalidAgeError: age cannot be negative
Caught Exception -> UnderageError: access restricted to adults

Breakdown​

  • throw payload;: Raises a runtime exception, immediately aborting current stack frame execution.
  • try { ... } catch (err) { ... }: Encapsulates risky operations and executes recovery logic when exceptions are raised.