js-slang
Version:
Javascript-based implementations of Source, written in Typescript
43 lines • 1.03 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Stack = void 0;
class Stack {
constructor() {
// Bottom of the array is at index 0
this.storage = [];
}
push(...items) {
for (const item of items) {
this.storage.push(item);
}
}
pop() {
return this.storage.pop();
}
peek() {
if (this.isEmpty()) {
return undefined;
}
return this.storage[this.size() - 1];
}
size() {
return this.storage.length;
}
isEmpty() {
return this.size() == 0;
}
getStack() {
// return a copy of the stack's contents
return [...this.storage];
}
some(predicate) {
return this.storage.some(predicate);
}
// required for first-class continuations,
// which directly mutate this stack globally.
setTo(otherStack) {
this.storage = otherStack.storage;
}
}
exports.Stack = Stack;
//# sourceMappingURL=stack.js.map