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Read function's scope flags only in ecma_op_create_function_object instead of call sites of the routine.

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JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-10-26 15:45:17 +03:00
parent 4d2ad40475
commit f24effa629
5 changed files with 38 additions and 65 deletions
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jerry-core/ecma/operations/ecma-function-object.cpp
+29 -15
View File
@@ -214,13 +214,30 @@ ecma_op_create_function_object (ecma_collection_header_t *formal_params_collecti
* by caller after passing it
* to the routine */
ecma_object_t *scope_p, /**< function's scope */
bool is_strict, /**< 'strict' flag */
bool do_instantiate_arguments_object, /**< should an Arguments object be instantiated
* for the function object upon call */
const bytecode_data_header_t *bytecode_data_p, /**< byte-code array */
bool is_decl_in_strict_mode, /**< is function declared in strict mode code? */
const bytecode_data_header_t *bytecode_header_p, /**< byte-code */
vm_instr_counter_t first_instr_pos) /**< position of first instruction
* of function's body */
{
bool is_strict_mode_code = is_decl_in_strict_mode;
bool do_instantiate_arguments_object = true;
vm_instr_counter_t instr_pos = first_instr_pos;
opcode_scope_code_flags_t scope_flags = vm_get_scope_flags (bytecode_header_p, instr_pos++);
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_STRICT)
{
is_strict_mode_code = true;
}
if ((scope_flags & OPCODE_SCOPE_CODE_FLAGS_NOT_REF_ARGUMENTS_IDENTIFIER)
&& (scope_flags & OPCODE_SCOPE_CODE_FLAGS_NOT_REF_EVAL_IDENTIFIER))
{
/* the code doesn't use 'arguments' identifier
* and doesn't perform direct call to eval,
* so Arguments object can't be referenced */
do_instantiate_arguments_object = false;
}
// 1., 4., 13.
ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);
@@ -253,12 +270,12 @@ ecma_op_create_function_object (ecma_collection_header_t *formal_params_collecti
// 12.
ecma_property_t *bytecode_prop_p = ecma_create_internal_property (f, ECMA_INTERNAL_PROPERTY_CODE_BYTECODE);
MEM_CP_SET_NON_NULL_POINTER (bytecode_prop_p->u.internal_property.value, bytecode_data_p);
MEM_CP_SET_NON_NULL_POINTER (bytecode_prop_p->u.internal_property.value, bytecode_header_p);
ecma_property_t *code_prop_p = ecma_create_internal_property (f, ECMA_INTERNAL_PROPERTY_CODE_FLAGS_AND_OFFSET);
code_prop_p->u.internal_property.value = ecma_pack_code_internal_property_value (is_strict,
code_prop_p->u.internal_property.value = ecma_pack_code_internal_property_value (is_strict_mode_code,
do_instantiate_arguments_object,
first_instr_pos);
instr_pos);
// 14.
// 15.
@@ -273,7 +290,7 @@ ecma_op_create_function_object (ecma_collection_header_t *formal_params_collecti
*/
// 19.
if (is_strict)
if (is_strict_mode_code)
{
ecma_object_t *thrower_p = ecma_builtin_get (ECMA_BUILTIN_ID_TYPE_ERROR_THROWER);
@@ -1132,18 +1149,15 @@ ecma_op_function_declaration (ecma_object_t *lex_env_p, /**< lexical environment
* be changed / used / freed
* by caller after passing it
* to the routine */
bool is_strict, /**< flag indicating if function is declared in strict mode code */
bool do_instantiate_arguments_object, /**< flag, indicating whether an Arguments object
* should be instantiated for the function object
* upon call */
bool is_decl_in_strict_mode, /**< flag, indicating if function is
* declared in strict mode code */
bool is_configurable_bindings) /**< flag indicating whether function
* is declared in eval code */
{
// b.
ecma_object_t *func_obj_p = ecma_op_create_function_object (formal_params_collection_p,
lex_env_p,
is_strict,
do_instantiate_arguments_object,
is_decl_in_strict_mode,
bytecode_data_p,
function_first_instr_pos);
@@ -1205,7 +1219,7 @@ ecma_op_function_declaration (ecma_object_t *lex_env_p, /**< lexical environment
ret_value = ecma_op_set_mutable_binding (lex_env_p,
function_name_p,
ecma_make_object_value (func_obj_p),
is_strict);
is_decl_in_strict_mode);
}
else
{