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Add support for function rest parameter (#2647)

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ECMAScript v6, 14.1.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-01-25 09:24:39 +01:00
committed by Akos Kiss
parent a42f239abb
commit 4c1ee94652
14 changed files with 185 additions and 3 deletions
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jerry-core/vm/vm.c
+17
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@@ -3428,6 +3428,10 @@ vm_execute (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
frame_ctx_p->stack_top_p = frame_ctx_p->registers_p + register_end;
#ifndef CONFIG_DISABLE_ES2015_FUNCTION_REST_PARAMETER
uint32_t function_call_argument_count = arg_list_len;
#endif /* !CONFIG_DISABLE_ES2015_FUNCTION_REST_PARAMETER */
if (arg_list_len > argument_end)
{
arg_list_len = argument_end;
@@ -3450,6 +3454,19 @@ vm_execute (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
}
}
#ifndef CONFIG_DISABLE_ES2015_FUNCTION_REST_PARAMETER
if (bytecode_header_p->status_flags & CBC_CODE_FLAGS_REST_PARAMETER)
{
JERRY_ASSERT (function_call_argument_count >= arg_list_len);
ecma_value_t new_array = ecma_op_create_array_object (arg_p + arg_list_len,
function_call_argument_count - arg_list_len,
false);
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (new_array));
frame_ctx_p->registers_p[argument_end] = new_array;
arg_list_len++;
}
#endif /* !CONFIG_DISABLE_ES2015_FUNCTION_REST_PARAMETER */
JERRY_CONTEXT (status_flags) &= (uint32_t) ~ECMA_STATUS_DIRECT_EVAL;
JERRY_CONTEXT (vm_top_context_p) = frame_ctx_p;