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Implement parse of for-in statement.

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JerryScript-DCO-1.0-Signed-off-by: Evgeny Gavrin e.gavrin@samsung.com
JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-06-25 01:20:31 +03:00
parent b988fe2fce
commit 507411f0a0
6 changed files with 540 additions and 9 deletions
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jerry-core/parser/js/opcodes-dumper.cpp
+73
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@@ -708,6 +708,23 @@ eval_ret_operand (void)
return ret;
} /* eval_ret_operand */
/**
* Creates operand for taking iterator value (next property name)
* from for-in opcode handler.
*
* @return constructed operand
*/
operand
jsp_create_operand_for_in_special_reg (void)
{
operand ret;
ret.type = OPERAND_TMP;
ret.data.uid = OPCODE_REG_SPECIAL_FOR_IN_PROPERTY_NAME;
return ret;
} /* jsp_create_operand_for_in_special_reg */
bool
operand_is_empty (operand op)
{
@@ -2362,6 +2379,62 @@ dump_with_end (void)
serializer_dump_op_meta (create_op_meta_000 (opcode));
} /* dump_with_end */
/**
* Dump template of 'for_in' instruction.
*
* Note:
* the instruction's flags field is written later (see also: rewrite_for_in).
*
* @return position of dumped instruction
*/
opcode_counter_t
dump_for_in_for_rewrite (operand op) /**< operand - result of evaluating Expression
* in for-in statement */
{
opcode_counter_t oc = serializer_get_current_opcode_counter ();
if (op.type == OPERAND_LITERAL)
{
const opcode_t opcode = getop_for_in (LITERAL_TO_REWRITE, INVALID_VALUE, INVALID_VALUE);
serializer_dump_op_meta (create_op_meta_100 (opcode, op.data.lit_id));
}
else
{
JERRY_ASSERT (op.type == OPERAND_TMP);
const opcode_t opcode = getop_for_in (op.data.uid, INVALID_VALUE, INVALID_VALUE);
serializer_dump_op_meta (create_op_meta_000 (opcode));
}
return oc;
} /* dump_for_in_for_rewrite */
/**
* Write position of 'for_in' block's end to specified 'for_in' instruction template,
* dumped earlier (see also: dump_for_in_for_rewrite).
*/
void
rewrite_for_in (opcode_counter_t oc) /**< opcode counter of the instruction template */
{
op_meta for_in_op_meta = serializer_get_op_meta (oc);
idx_t id1, id2;
split_opcode_counter (get_diff_from (oc), &id1, &id2);
for_in_op_meta.op.data.for_in.oc_idx_1 = id1;
for_in_op_meta.op.data.for_in.oc_idx_2 = id2;
serializer_rewrite_op_meta (oc, for_in_op_meta);
} /* rewrite_for_in */
/**
* Dump 'meta' instruction of 'end for_in' type
*/
void
dump_for_in_end (void)
{
const opcode_t opcode = getop_meta (OPCODE_META_TYPE_END_FOR_IN, INVALID_VALUE, INVALID_VALUE);
serializer_dump_op_meta (create_op_meta_000 (opcode));
} /* dump_for_in_end */
void
dump_try_for_rewrite (void)
{