git.delta.rocks / jrsonnet / refs/commits / 765a4d39e770

1//! Modify VM values2//! Only tested with variables, which haven't altered by code before appearing here3//! In jrsonnet every value is immutable, and this code is probally broken45use jrsonnet_evaluator::{EvaluationState, LazyBinding, LazyVal, ObjMember, Val};6use jrsonnet_parser::Visibility;7use std::{ffi::CStr, os::raw::c_char};89/// # Safety10///11/// Received arr value should be correct pointer to array allocated by make_array12#[no_mangle]13pub unsafe extern "C" fn jsonnet_json_array_append(14	_vm: &EvaluationState,15	arr: &mut Val,16	val: &Val,17) {18	match arr {19		Val::Arr(old) => {20			let mut new = Vec::new();21			for item in old.iter_lazy() {22				new.push(item);23			}24			new.push(LazyVal::new_resolved(val.clone()));25			// *arr = Val::Arr(ArrValue::Lazy(Gc::new(new)));26			todo!()27		}28		_ => panic!("should receive array"),29	}30}3132/// # Safety33///34/// This function is safe if passed name is ok35#[no_mangle]36pub unsafe extern "C" fn jsonnet_json_object_append(37	_vm: &EvaluationState,38	obj: &mut Val,39	name: *const c_char,40	val: &Val,41) {42	match obj {43		Val::Obj(old) => {44			let new_obj = old.clone().extend_with_field(45				CStr::from_ptr(name).to_str().unwrap().into(),46				ObjMember {47					add: false,48					visibility: Visibility::Normal,49					invoke: LazyBinding::Bound(LazyVal::new_resolved(val.clone())),50					location: None,51				},52			);5354			*obj = Val::Obj(new_obj);55		}56		_ => panic!("should receive object"),57	}58}