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

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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
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jerry-core/vm/vm.c
+47 -3
View File
@@ -2062,7 +2062,47 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
frame_ctx_p->stack_top_p = stack_top_p;
return ECMA_VALUE_UNDEFINED;
}
#endif /* ENABLED (JERRY_ES2015) */
case VM_OC_CREATE_GENERATOR:
{
frame_ctx_p->call_operation = VM_EXEC_RETURN;
frame_ctx_p->byte_code_p = byte_code_p;
frame_ctx_p->stack_top_p = stack_top_p;
return opfunc_create_executable_object (frame_ctx_p);
}
case VM_OC_YIELD:
{
frame_ctx_p->call_operation = VM_EXEC_RETURN;
frame_ctx_p->byte_code_p = byte_code_p;
frame_ctx_p->stack_top_p = stack_top_p;
return left_value;
}
case VM_OC_CONTINUE_EXEC:
{
if (JERRY_UNLIKELY (frame_ctx_p->call_operation == ECMA_GENERATOR_RETURN))
{
ecma_value_t *stack_bottom_p = VM_GET_REGISTERS (frame_ctx_p) + register_end + frame_ctx_p->context_depth;
result = *(--stack_top_p);
while (stack_top_p > stack_bottom_p)
{
ecma_fast_free_value (*(--stack_top_p));
}
goto error;
}
if (JERRY_UNLIKELY (frame_ctx_p->call_operation == ECMA_GENERATOR_THROW))
{
JERRY_CONTEXT (error_value) = *(--stack_top_p);
JERRY_CONTEXT (status_flags) |= ECMA_STATUS_EXCEPTION;
result = ECMA_VALUE_ERROR;
goto error;
}
continue;
}
#endif /* ENABLED (JERRY_ES2015) */
case VM_OC_PUSH_ELISON:
{
*stack_top_p++ = ECMA_VALUE_ARRAY_HOLE;
@@ -3804,8 +3844,8 @@ free_both_values:
free_left_value:
ecma_fast_free_value (left_value);
}
error:
error:
ecma_fast_free_value (left_value);
ecma_fast_free_value (right_value);
@@ -4031,7 +4071,7 @@ vm_init_exec (vm_frame_ctx_t *frame_ctx_p, /**< frame context */
*
* @return ecma value
*/
static ecma_value_t JERRY_ATTR_NOINLINE
ecma_value_t JERRY_ATTR_NOINLINE
vm_execute (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
{
while (true)
@@ -4056,6 +4096,10 @@ vm_execute (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
vm_spread_operation (frame_ctx_p);
break;
}
case VM_EXEC_RETURN:
{
return completion_value;
}
#endif /* ENABLED (JERRY_ES2015) */
case VM_EXEC_CONSTRUCT:
{