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feat: add Fiber.abort() method to abort fiber with error message

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Implements a new `Fiber.abort()` static method that allows a fiber to terminate with a custom error message string. The method validates that the argument is a string, then returns a PRIM_ERROR to abort the current fiber. Includes three test cases: basic abort with error message retrieval via `fiber.try`, aborting the main fiber with a runtime error, and type checking that non-string arguments produce an appropriate error message.
This commit is contained in:
Bob Nystrom
2015-01-01 18:40:14 +00:00
parent d287d084ed
commit 0f5eb1885e
4 changed files with 19 additions and 0 deletions
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src/wren_core.c
+10
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@@ -224,6 +224,15 @@ DEF_NATIVE(fiber_new)
RETURN_OBJ(newFiber);
}
DEF_NATIVE(fiber_abort)
{
if (!validateString(vm, args, 1, "Error message")) return PRIM_ERROR;
// Move the error message to the return position.
args[0] = args[1];
return PRIM_ERROR;
}
DEF_NATIVE(fiber_call)
{
ObjFiber* runFiber = AS_FIBER(args[0]);
@@ -1048,6 +1057,7 @@ void wrenInitializeCore(WrenVM* vm)
vm->fiberClass = defineClass(vm, "Fiber");
NATIVE(vm->fiberClass->obj.classObj, " instantiate", fiber_instantiate);
NATIVE(vm->fiberClass->obj.classObj, "new ", fiber_new);
NATIVE(vm->fiberClass->obj.classObj, "abort ", fiber_abort);
NATIVE(vm->fiberClass->obj.classObj, "yield", fiber_yield);
NATIVE(vm->fiberClass->obj.classObj, "yield ", fiber_yield1);
NATIVE(vm->fiberClass, "call", fiber_call);