YourWishes/jerryscript
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement the core of the generator functions. (#3368)

Browse Source 
Some things are missing:
 - yield* support
 - generator definition in object literal
 - the hidden GeneratorFunction

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-11-28 11:54:27 +01:00
committed by Dániel Bátyai
parent 14e95a4775
commit 110f75c99d
35 changed files with 1535 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files
jerry-core/vm/vm-stack.c
+107 -18
View File
@@ -56,35 +56,21 @@ vm_stack_context_abort (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
case VM_CONTEXT_FINALLY_RETURN:
{
ecma_free_value (vm_stack_top_p[-2]);
VM_MINUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
vm_stack_top_p -= PARSER_TRY_CONTEXT_STACK_ALLOCATION;
break;
/* FALLTHRU */
}
case VM_CONTEXT_FINALLY_JUMP:
case VM_CONTEXT_TRY:
case VM_CONTEXT_CATCH:
{
VM_MINUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
vm_stack_top_p -= PARSER_TRY_CONTEXT_STACK_ALLOCATION;
break;
}
case VM_CONTEXT_CATCH:
{
JERRY_ASSERT (PARSER_TRY_CONTEXT_STACK_ALLOCATION > PARSER_WITH_CONTEXT_STACK_ALLOCATION);
const uint16_t size_diff = PARSER_TRY_CONTEXT_STACK_ALLOCATION - PARSER_WITH_CONTEXT_STACK_ALLOCATION;
VM_MINUS_EQUAL_U16 (frame_ctx_p->context_depth, size_diff);
vm_stack_top_p -= size_diff;
/* FALLTHRU */
}
#if ENABLED (JERRY_ES2015)
case VM_CONTEXT_BLOCK:
#endif /* ENABLED (JERRY_ES2015) */
case VM_CONTEXT_WITH:
#if ENABLED (JERRY_ES2015)
case VM_CONTEXT_SUPER_CLASS:
#endif /* ENABLED (JERRY_ES2015) */
case VM_CONTEXT_WITH:
{
VM_MINUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_WITH_CONTEXT_STACK_ALLOCATION);
vm_stack_top_p -= PARSER_WITH_CONTEXT_STACK_ALLOCATION;
@@ -116,7 +102,7 @@ vm_stack_context_abort (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
ecma_collection_destroy (collection_p);
ecma_deref_object (ecma_get_object_from_value (vm_stack_top_p[-4]));
ecma_free_value (vm_stack_top_p[-4]);
VM_MINUS_EQUAL_U16 (frame_ctx_p->context_depth, PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION);
vm_stack_top_p -= PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION;
@@ -296,6 +282,109 @@ vm_stack_find_finally (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
return false;
} /* vm_stack_find_finally */
#if ENABLED (JERRY_ES2015)
/**
* Get the offsets of ecma values from the specified item of a context.
*
* @return array of offsets, last item represents the size of the context item
*/
uint32_t
vm_get_context_value_offsets (ecma_value_t *context_item_p) /**< any item of a context */
{
switch (VM_GET_CONTEXT_TYPE (context_item_p[-1]))
{
case VM_CONTEXT_FINALLY_THROW:
case VM_CONTEXT_FINALLY_RETURN:
{
return (2 << (VM_CONTEXT_OFFSET_SHIFT)) | PARSER_TRY_CONTEXT_STACK_ALLOCATION;
}
case VM_CONTEXT_FINALLY_JUMP:
case VM_CONTEXT_TRY:
case VM_CONTEXT_CATCH:
{
return PARSER_TRY_CONTEXT_STACK_ALLOCATION;
}
#if ENABLED (JERRY_ES2015)
case VM_CONTEXT_BLOCK:
case VM_CONTEXT_SUPER_CLASS:
#endif /* ENABLED (JERRY_ES2015) */
case VM_CONTEXT_WITH:
{
return PARSER_WITH_CONTEXT_STACK_ALLOCATION;
}
#if ENABLED (JERRY_ES2015)
case VM_CONTEXT_FOR_OF:
{
return ((3 << (VM_CONTEXT_OFFSET_SHIFT * 2))
| (2 << (VM_CONTEXT_OFFSET_SHIFT))
| PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
}
#endif /* ENABLED (JERRY_ES2015) */
default:
{
return (4 << (VM_CONTEXT_OFFSET_SHIFT)) | PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION;
}
}
} /* vm_get_context_value_offsets */
/**
* Ref / deref lexical environments in the chain using the current context.
*/
void
vm_ref_lex_env_chain (ecma_object_t *lex_env_p, /**< top of lexical environment */
uint16_t context_depth, /**< depth of function context */
ecma_value_t *context_end_p, /**< end of function context */
bool do_ref) /**< ref or deref lexical environments */
{
ecma_value_t *context_top_p = context_end_p + context_depth;
JERRY_ASSERT (context_top_p > context_end_p);
do
{
if (context_top_p[-1] & VM_CONTEXT_HAS_LEX_ENV)
{
JERRY_ASSERT (lex_env_p->u2.outer_reference_cp != JMEM_CP_NULL);
ecma_object_t *next_lex_env_p = ECMA_GET_NON_NULL_POINTER (ecma_object_t, lex_env_p->u2.outer_reference_cp);
if (do_ref)
{
ecma_ref_object (lex_env_p);
}
else
{
ecma_deref_object (lex_env_p);
}
lex_env_p = next_lex_env_p;
}
uint32_t offsets = vm_get_context_value_offsets (context_top_p);
while (VM_CONTEXT_HAS_NEXT_OFFSET (offsets))
{
int32_t offset = VM_CONTEXT_GET_NEXT_OFFSET (offsets);
if (do_ref)
{
ecma_ref_if_object (context_top_p[offset]);
}
else
{
ecma_deref_if_object (context_top_p[offset]);
}
offsets >>= VM_CONTEXT_OFFSET_SHIFT;
}
JERRY_ASSERT (context_top_p >= context_end_p + offsets);
context_top_p -= offsets;
}
while (context_top_p > context_end_p);
} /* vm_ref_lex_env_chain */
#endif /* ENABLED (JERRY_ES2015) */
/**
* @}
* @}