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Add iterator close support for for-of statement (#3401)

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JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2020-01-13 17:38:47 +01:00
committed by GitHub
parent f1dd59e4bd
commit be8ae3aae8
5 changed files with 290 additions and 6 deletions
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jerry-core/vm/vm.c
+28 -1
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@@ -3485,7 +3485,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
VM_PLUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
stack_top_p += PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION;
stack_top_p[-1] = VM_CREATE_CONTEXT (VM_CONTEXT_FOR_OF, branch_offset);
stack_top_p[-1] = VM_CREATE_CONTEXT (VM_CONTEXT_FOR_OF, branch_offset) | VM_CONTEXT_CLOSE_ITERATOR;
stack_top_p[-2] = next_value;
stack_top_p[-3] = iterator;
@@ -3587,6 +3587,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
case VM_OC_CONTEXT_END:
{
JERRY_ASSERT (VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth == stack_top_p);
JERRY_ASSERT (!(stack_top_p[-1] & VM_CONTEXT_CLOSE_ITERATOR));
ecma_value_t context_type = VM_GET_CONTEXT_TYPE (stack_top_p[-1]);
@@ -3653,6 +3654,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
case VM_OC_JUMP_AND_EXIT_CONTEXT:
{
JERRY_ASSERT (VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth == stack_top_p);
JERRY_ASSERT (!jcontext_has_pending_exception ());
branch_offset += (int32_t) (byte_code_start_p - frame_ctx_p->byte_code_start_p);
@@ -3670,6 +3672,14 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
byte_code_p = frame_ctx_p->byte_code_start_p + branch_offset;
}
#if ENABLED (JERRY_ES2015)
if (jcontext_has_pending_exception ())
{
result = ECMA_VALUE_ERROR;
goto error;
}
#endif /* ENABLED (JERRY_ES2015) */
JERRY_ASSERT (VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth == stack_top_p);
continue;
}
@@ -3944,10 +3954,27 @@ error:
JERRY_ASSERT (VM_GET_CONTEXT_TYPE (stack_top_p[-1]) == VM_CONTEXT_FINALLY_RETURN);
JERRY_ASSERT (VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth == stack_top_p);
#if ENABLED (JERRY_ES2015)
if (jcontext_has_pending_exception ())
{
stack_top_p[-1] = (ecma_value_t) (stack_top_p[-1] - VM_CONTEXT_FINALLY_RETURN + VM_CONTEXT_FINALLY_THROW);
ecma_free_value (result);
result = jcontext_take_exception ();
}
#endif /* ENABLED (JERRY_ES2015) */
byte_code_p = frame_ctx_p->byte_code_p;
stack_top_p[-2] = result;
continue;
}
#if ENABLED (JERRY_ES2015)
if (jcontext_has_pending_exception ())
{
ecma_free_value (result);
result = ECMA_VALUE_ERROR;
}
#endif /* ENABLED (JERRY_ES2015) */
}
else if (jcontext_has_pending_exception () && !jcontext_has_pending_abort ())
{