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Introducing interpreter context flag, indicating if there is call of 'Direct call to eval' form in process, and interfaces for accessing the flag and 'strict mode' flag.

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JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-06-10 23:48:05 +03:00
parent 446e8bf989
commit b310d76dec
4 changed files with 70 additions and 1 deletions
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jerry-core/vm/vm.cpp
+44
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@@ -545,6 +545,7 @@ vm_run_from_pos (const opcode_t *opcodes_p, /**< byte-code array */
int_data.lex_env_p = lex_env_p;
int_data.is_strict = is_strict;
int_data.is_eval_code = is_eval_code;
int_data.is_call_in_direct_eval_form = false;
int_data.min_reg_num = min_reg_num;
int_data.max_reg_num = max_reg_num;
int_data.tmp_num_p = ecma_alloc_number ();
@@ -604,6 +605,49 @@ vm_get_scope_flags (const opcode_t *opcodes_p, /**< byte-code array */
return (opcode_scope_code_flags_t) flags_opcode.data.meta.data_1;
} /* vm_get_scope_flags */
/**
* Check whether currently executed code is strict mode code
*
* @return true - current code is executed in strict mode,
* false - otherwise.
*/
bool
vm_is_strict_mode (void)
{
JERRY_ASSERT (vm_top_context_p != NULL);
return vm_top_context_p->is_strict;
} /* vm_is_strict_mode */
/**
* Check whether currently performed call (on top of call-stack) is performed in form,
* meeting conditions of 'Direct Call to Eval' (see also: ECMA-262 v5, 15.1.2.1.1)
*
* Warning:
* the function should only be called from implementation
* of built-in 'eval' routine of Global object
*
* @return true - currently performed call is performed through 'eval' identifier,
* without 'this' argument,
* false - otherwise.
*/
bool
vm_is_direct_eval_form_call (void)
{
if (vm_top_context_p != NULL)
{
return vm_top_context_p->is_call_in_direct_eval_form;
}
else
{
/*
* There is no any interpreter context, so call is performed not from a script.
* This implies that the call is indirect.
*/
return false;
}
} /* vm_is_direct_eval_form_call */
/**
* Get this binding of current execution context
*