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Remove CBC_EXT_CONTINUE_EXEC opcode. (#3378)

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There is no need for a specific opcode after yield because
the return and throw commands can be redirected to fake byte code sequences.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-12-02 12:37:13 +01:00
committed by GitHub
parent 51efba40b4
commit 132de45c0b
13 changed files with 69 additions and 65 deletions
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jerry-core/ecma/builtin-objects/ecma-builtin-generator-prototype.c
+35 -2
View File
@@ -40,6 +40,32 @@
* @{
*/
/**
* Generator resume execution flags.
*/
typedef enum
{
ECMA_GENERATOR_NEXT, /**< generator should continue its execution */
ECMA_GENERATOR_RETURN, /**< generator should perform a return operation */
ECMA_GENERATOR_THROW, /**< generator should perform a throw operation */
} ecma_generator_resume_mode_t;
/**
* Byte code sequence which returns from the generator.
*/
static const uint8_t ecma_builtin_generator_prototype_return[2] =
{
CBC_EXT_OPCODE, CBC_EXT_RETURN
};
/**
* Byte code sequence which throws an exception.
*/
static const uint8_t ecma_builtin_generator_prototype_throw[1] =
{
CBC_THROW
};
/**
* Helper function for next / return / throw
*
@@ -49,7 +75,7 @@
static ecma_value_t
ecma_builtin_generator_prototype_object_do (ecma_value_t this_arg, /**< this argument */
ecma_value_t arg, /**< argument */
uint8_t yield_mode) /**< yield mode */
ecma_generator_resume_mode_t resume_mode) /**< resume mode */
{
vm_executable_object_t *executable_object_p = NULL;
@@ -83,7 +109,14 @@ ecma_builtin_generator_prototype_object_do (ecma_value_t this_arg, /**< this arg
return ecma_create_iter_result_object (ECMA_VALUE_UNDEFINED, ECMA_VALUE_TRUE);
}
executable_object_p->frame_ctx.call_operation = yield_mode;
if (resume_mode == ECMA_GENERATOR_RETURN)
{
executable_object_p->frame_ctx.byte_code_p = ecma_builtin_generator_prototype_return;
}
else if (resume_mode == ECMA_GENERATOR_THROW)
{
executable_object_p->frame_ctx.byte_code_p = ecma_builtin_generator_prototype_throw;
}
ecma_value_t value = opfunc_resume_executable_object (executable_object_p, arg);