ton/tolk-tester/tests/invalid-mutate-5.tolk

fun cantCallMutatingMethod(c: cell) {
    val s: slice = c.beginParse();
    if (1) {
        var s: slice = c.beginParse();
        s.loadRef();       // this is ok, 's' is another variable
    }
    val i = s.loadUint(32);
}

/**
@compilation_should_fail
@stderr modifying an immutable variable `s` (call a mutating method)
@stderr s.loadUint
 */
[Tolk] Get rid of ~tilda with `mutate` and `self` methods This is a very big change. If FunC has `.methods()` and `~methods()`, Tolk has only dot, one and only way to call a `.method()`. A method may mutate an object, or may not. It's a behavioral and semantic difference from FunC. - `cs.loadInt(32)` modifies a slice and returns an integer - `b.storeInt(x, 32)` modifies a builder - `b = b.storeInt()` also works, since it not only modifies, but returns - chained methods also work, they return `self` - everything works exactly as expected, similar to JS - no runtime overhead, exactly same Fift instructions - custom methods are created with ease - tilda `~` does not exist in Tolk at all 2024-10-31 07:18:54 +00:00			`fun cantCallMutatingMethod(c: cell) {`
			`val s: slice = c.beginParse();`
			`if (1) {`
			`var s: slice = c.beginParse();`
			`s.loadRef(); // this is ok, 's' is another variable`
			`}`
			`val i = s.loadUint(32);`
			`}`

			`/**`
			`@compilation_should_fail`
			@stderr modifying an immutable variable `s` (call a mutating method)
			`@stderr s.loadUint`
			`*/`