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Providing interface for getting reference to Global lexical environment.

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This commit is contained in:
Ruben Ayrapetyan 2015-04-15 21:14:50 +03:00
parent 0c7d358157
commit b81e535e1c
4 changed files with 90 additions and 51 deletions
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3
jerry-core/ecma/base/ecma-init-finalize.cpp
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@ -18,6 +18,7 @@
#include "ecma-helpers.h"
#include "ecma-init-finalize.h"
#include "ecma-lcache.h"
#include "ecma-lex-env.h"
#include "ecma-stack.h"
#include "mem-allocator.h"
@ -38,6 +39,7 @@ ecma_init (void)
ecma_init_builtins ();
ecma_lcache_init ();
ecma_stack_init ();
ecma_init_environment ();
mem_register_a_try_give_memory_back_callback (ecma_try_to_give_back_some_memory);
} /* ecma_init */
@ -50,6 +52,7 @@ ecma_finalize (void)
{
mem_unregister_a_try_give_memory_back_callback (ecma_try_to_give_back_some_memory);
ecma_finalize_environment ();
ecma_stack_finalize ();
ecma_finalize_builtins ();
ecma_lcache_invalidate_all ();

117
jerry-core/ecma/operations/ecma-lex-env.cpp
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@ -31,6 +31,77 @@
* @{
*/
/**
* \addtogroup globallexicalenvironment Global lexical environment
* @{
*/
/**
* Global lexical environment
*
* See also: ECMA-262 v5, 10.2.3
*/
ecma_object_t* ecma_global_lex_env_p = NULL;
/**
* Initialize Global environment
*/
void
ecma_init_environment (void)
{
#ifdef CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE
ecma_global_lex_env_p = ecma_create_decl_lex_env (NULL);
#else /* !CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE */
ecma_object_t *glob_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_GLOBAL);
ecma_global_lex_env_p = ecma_create_object_lex_env (NULL, glob_obj_p, false);
ecma_deref_object (glob_obj_p);
#endif /* !CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE */
} /* ecma_init_environment */
/**
* Finalize Global environment
*/
void
ecma_finalize_environment (void)
{
ecma_deref_object (ecma_global_lex_env_p);
ecma_global_lex_env_p = NULL;
} /* ecma_finalize_environment */
/**
* Get reference to Global lexical environment
*
* @return pointer to the object's instance
*/
ecma_object_t*
ecma_get_global_environment (void)
{
ecma_ref_object (ecma_global_lex_env_p);
return ecma_global_lex_env_p;
} /* ecma_get_global_environment */
/**
* Figure out whether the lexical environment is global.
*
* @return true - if lexical environment is object-bound and corresponding object is global object,
* false - otherwise.
*/
bool
ecma_is_lexical_environment_global (ecma_object_t *lex_env_p) /**< lexical environment */
{
JERRY_ASSERT(lex_env_p != NULL
&& ecma_is_lexical_environment (lex_env_p));
return (lex_env_p == ecma_global_lex_env_p);
} /* ecma_is_lexical_environment_global */
/**
* @}
*/
/**
* HasBinding operation.
*
@ -423,52 +494,6 @@ ecma_op_initialize_immutable_binding (ecma_object_t *lex_env_p, /**< lexical env
ecma_named_data_property_assign_value (lex_env_p, prop_p, value);
} /* ecma_op_initialize_immutable_binding */
/**
* The Global Environment constructor.
*
* See also: ECMA-262 v5, 10.2.3
*
* @return pointer to created lexical environment
*/
ecma_object_t*
ecma_op_create_global_environment (ecma_object_t *glob_obj_p) /**< the Global object */
{
#ifdef CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE
(void) glob_obj_p;
ecma_object_t *glob_env_p = ecma_create_decl_lex_env (NULL);
#else /* !CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE */
ecma_object_t *glob_env_p = ecma_create_object_lex_env (NULL, glob_obj_p, false);
#endif /* !CONFIG_ECMA_GLOBAL_ENVIRONMENT_DECLARATIVE */
return glob_env_p;
} /* ecma_op_create_global_environment */
/**
* Figure out whether the lexical environment is global.
*
* @return true - if lexical environment is object-bound and corresponding object is global object,
* false - otherwise.
*/
bool
ecma_is_lexical_environment_global (ecma_object_t *lex_env_p) /**< lexical environment */
{
JERRY_ASSERT(lex_env_p != NULL
&& ecma_is_lexical_environment (lex_env_p));
ecma_lexical_environment_type_t type = ecma_get_lex_env_type (lex_env_p);
if (type == ECMA_LEXICAL_ENVIRONMENT_OBJECTBOUND)
{
ecma_object_t *binding_obj_p = ecma_get_lex_env_binding_object (lex_env_p);
return ecma_builtin_is (binding_obj_p, ECMA_BUILTIN_ID_GLOBAL);
}
else
{
return false;
}
} /* ecma_is_lexical_environment_global */
/**
* @}
* @}

15
jerry-core/ecma/operations/ecma-lex-env.h
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@ -29,6 +29,20 @@
* @{
*/
/**
* \addtogroup globallexicalenvironment Global lexical environment
* @{
*/
extern void ecma_init_environment (void);
extern void ecma_finalize_environment (void);
extern ecma_object_t* ecma_get_global_environment (void);
extern bool ecma_is_lexical_environment_global (ecma_object_t *lex_env_p);
/**
* @}
*/
/* ECMA-262 v5, 8.7.1 and 8.7.2 */
extern ecma_completion_value_t ecma_op_get_value_lex_env_base (ecma_object_t *ref_base_lex_env_p,
ecma_string_t *var_name_string_p,
@ -66,7 +80,6 @@ extern void ecma_op_initialize_immutable_binding (ecma_object_t *lex_env_p,
const ecma_value_t& value);
extern ecma_object_t* ecma_op_create_global_environment (ecma_object_t *glob_obj_p);
extern bool ecma_is_lexical_environment_global (ecma_object_t *lex_env_p);
/**
* @}

6
jerry-core/vm/vm.cpp
View File

@ -366,12 +366,10 @@ run_int (void)
}
ecma_object_t *glob_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_GLOBAL);
ecma_object_t *lex_env_p = ecma_op_create_global_environment (glob_obj_p);
ecma_value_t this_binding_value = ecma_make_object_value (glob_obj_p);
ecma_object_t *lex_env_p = ecma_get_global_environment ();
ecma_completion_value_t completion = run_int_from_pos (start_pos,
this_binding_value,
ecma_make_object_value (glob_obj_p),
lex_env_p,
is_strict,
false);