Rework the core of class parsing/runtime semantic (#3598)

Changes:
 - Use the pre-scanner to provide information for the parser about the existence of the class constructor
 - The allocation of the super declarative environment is no longer needed
 - The VM frame context holds the information about the this binding status
 - Reduce the number of class related VM/CBC instructions
 - Improve ecma_op_function_{construct, call} to properly set new.target

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2020-03-16 14:37:47 +01:00
committed by GitHub
parent 56b9f098ab
commit bfd2639634
49 changed files with 1671 additions and 1490 deletions
@@ -144,6 +144,45 @@ ecma_collection_push_back (ecma_collection_t *collection_p, /**< value collectio
collection_p->buffer_p = buffer_p;
} /* ecma_collection_push_back */
/**
* Reserve space for the given amount of ecma_values in the collection
*/
void
ecma_collection_reserve (ecma_collection_t *collection_p, /**< value collection */
uint32_t count) /**< number of ecma values to reserve */
{
JERRY_ASSERT (collection_p != NULL);
JERRY_ASSERT (UINT32_MAX - count > collection_p->capacity);
const uint32_t new_capacity = collection_p->capacity + count;
const uint32_t old_size = ECMA_COLLECTION_ALLOCATED_SIZE (collection_p->capacity);
const uint32_t new_size = ECMA_COLLECTION_ALLOCATED_SIZE (new_capacity);
ecma_value_t *buffer_p = collection_p->buffer_p;
buffer_p = jmem_heap_realloc_block (buffer_p, old_size, new_size);
collection_p->capacity = new_capacity;
collection_p->buffer_p = buffer_p;
} /* ecma_collection_reserve */
/**
* Append a list of values to the end of the collection
*/
void
ecma_collection_append (ecma_collection_t *collection_p, /**< value collection */
const ecma_value_t *buffer_p, /**< values to append */
uint32_t count) /**< number of ecma values to append */
{
JERRY_ASSERT (collection_p != NULL);
if (collection_p->capacity - collection_p->item_count > count)
{
ecma_collection_reserve (collection_p, count);
}
memcpy (collection_p->buffer_p + collection_p->item_count, buffer_p, count * sizeof (ecma_value_t));
collection_p->item_count += count;
} /* ecma_collection_append */
/**
* @}
* @}