void srl_iterator_step_out(pTHX_ srl_iterator_t *iter, UV n) { UV offset; srl_stack_t *stack = iter->stack; DEBUG_ASSERT_RDR_SANE(iter->pbuf); SRL_ITER_TRACE("n=%"UVuf, n); SRL_ITER_ASSERT_STACK(iter); // SRL_ITER_ASSERT_EOF(iter, "serialized object"); XXX need ability to go back on last element // if (expect_false(n == 0)) return; XXX keep it as a feature? while (n--) { srl_stack_pop_nocheck(stack); if (expect_false(srl_stack_empty(stack))) { SRL_ITER_ERROR("It was last object on stack, no more parents"); } } offset = stack->ptr->offset; iter->buf.pos = iter->buf.body_pos + offset; stack->ptr->idx = stack->ptr->count; DEBUG_ASSERT_RDR_SANE(iter->pbuf); }
SRL_STATIC_INLINE void srl_iterator_wrap_stack(pTHX_ srl_iterator_t *iter, IV expected_depth) { srl_stack_t *stack = iter->stack; if (expect_false(SRL_STACK_DEPTH(stack) < expected_depth)) SRL_ITER_ERRORf2("expected depth %"IVdf" is higher than current depth %"IVdf, expected_depth, SRL_STACK_DEPTH(stack)); while (!srl_stack_empty(stack) && stack->ptr->idx == 0) { if (SRL_STACK_DEPTH(stack) == expected_depth) break; srl_stack_pop_nocheck(stack); if (srl_stack_empty(stack)) SRL_ITER_TRACE("end of stack reached"); } }
void srl_iterator_step_out(pTHX_ srl_iterator_t *iter, UV n) { srl_stack_t *stack = iter->pstack; DEBUG_ASSERT_RDR_SANE(iter->pbuf); SRL_ITER_ASSERT_STACK(iter); SRL_ITER_TRACE("n=%"UVuf, n); SRL_ITER_REPORT_STACK_STATE(iter); // SRL_ITER_ASSERT_EOF(iter, "serialized object"); XXX need ability to go back on last element // if (expect_false(n == 0)) return; XXX keep it as a feature? while (n--) { if (expect_false(SRL_ITER_STACK_ON_ROOT(stack))) { SRL_ITER_ERROR("It was last object on stack, no more parents"); } srl_stack_pop_nocheck(stack); } srl_iterator_restore_stack_position(aTHX_ iter); }
SRL_STATIC_INLINE void srl_merge_single_value(pTHX_ srl_merger_t *mrg) { U8 tag; UV length, offset; ptable_entry_ptr ptable_entry; read_again: assert(mrg->recursion_depth >= 0); DEBUG_ASSERT_RDR_SANE(mrg->pibuf); DEBUG_ASSERT_BUF_SANE(&mrg->obuf); if (expect_false(++mrg->recursion_depth > mrg->max_recursion_depth)) SRL_RDR_ERRORf1(mrg->pibuf, "Reached recursion limit (%lu) during merging", mrg->max_recursion_depth); ptable_entry = NULL; if (expect_false(SRL_RDR_DONE(mrg->pibuf))) SRL_RDR_ERROR(mrg->pibuf, "Unexpected termination of input buffer"); tag = *mrg->ibuf.pos & ~SRL_HDR_TRACK_FLAG; SRL_REPORT_CURRENT_TAG(mrg, tag); if (mrg->tracked_offsets && !srl_stack_empty(mrg->tracked_offsets)) { UV itag_offset = SRL_RDR_BODY_POS_OFS(mrg->pibuf); if (expect_false(itag_offset == srl_stack_peek_nocheck(aTHX_ mrg->tracked_offsets))) { // trackme case srl_stack_pop_nocheck(mrg->tracked_offsets); ptable_entry = srl_store_tracked_offset(aTHX_ mrg, itag_offset, BODY_POS_OFS(&mrg->obuf)); } } if (tag <= SRL_HDR_NEG_HIGH) { srl_buf_cat_tag_nocheck(mrg, tag); } else if (tag >= SRL_HDR_ARRAYREF_LOW && tag <= SRL_HDR_ARRAYREF_HIGH) { srl_merge_array(aTHX_ mrg, tag, SRL_HDR_ARRAYREF_LEN_FROM_TAG(tag)); } else if (tag >= SRL_HDR_HASHREF_LOW && tag <= SRL_HDR_HASHREF_HIGH) { srl_merge_hash(aTHX_ mrg, tag, SRL_HDR_HASHREF_LEN_FROM_TAG(tag)); } else if (tag >= SRL_HDR_SHORT_BINARY_LOW) { srl_merge_short_binary(aTHX_ mrg, tag, ptable_entry); } else { switch (tag) { case SRL_HDR_VARINT: case SRL_HDR_ZIGZAG: srl_buf_cat_tag_nocheck(mrg, tag); srl_copy_varint(aTHX_ mrg); break; case SRL_HDR_FLOAT: srl_buf_copy_content_nocheck(aTHX_ mrg, 5); break; case SRL_HDR_DOUBLE: srl_buf_copy_content_nocheck(aTHX_ mrg, 9); break; case SRL_HDR_LONG_DOUBLE: srl_buf_copy_content_nocheck(aTHX_ mrg, 17); break; case SRL_HDR_TRUE: case SRL_HDR_FALSE: case SRL_HDR_UNDEF: case SRL_HDR_CANONICAL_UNDEF: srl_buf_cat_tag_nocheck(mrg, tag); break; case SRL_HDR_BINARY: case SRL_HDR_STR_UTF8: srl_merge_binary_utf8(aTHX_ mrg, ptable_entry); break; case SRL_HDR_HASH: mrg->ibuf.pos++; // skip tag in input buffer length = srl_read_varint_uv_count(aTHX_ mrg->pibuf, " while reading ARRAY or HASH"); srl_merge_hash(aTHX_ mrg, tag, length); break; case SRL_HDR_ARRAY: mrg->ibuf.pos++; // skip tag in input buffer length = srl_read_varint_uv_count(aTHX_ mrg->pibuf, " while reading ARRAY or HASH"); srl_merge_array(aTHX_ mrg, tag, length); break; default: switch (tag) { case SRL_HDR_COPY: case SRL_HDR_REFP: case SRL_HDR_ALIAS: mrg->ibuf.pos++; // skip tag in input buffer offset = srl_read_varint_uv_offset(aTHX_ mrg->pibuf, " while reading COPY/ALIAS/REFP"); offset = srl_lookup_tracked_offset(aTHX_ mrg, offset); // convert ibuf offset to obuf offset srl_buf_cat_varint(aTHX_ &mrg->obuf, tag, offset); if (tag == SRL_HDR_REFP || tag == SRL_HDR_ALIAS) { SRL_SET_TRACK_FLAG(*(mrg->obuf.body_pos + offset)); } break; case SRL_HDR_REFN: case SRL_HDR_WEAKEN: case SRL_HDR_EXTEND: srl_buf_cat_tag_nocheck(mrg, tag); goto read_again; case SRL_HDR_OBJECT: case SRL_HDR_OBJECT_FREEZE: srl_merge_object(aTHX_ mrg, tag); break; case SRL_HDR_REGEXP: srl_buf_cat_tag_nocheck(mrg, tag); srl_merge_stringish(aTHX_ mrg); tag = *mrg->ibuf.pos; if (expect_false(tag < SRL_HDR_SHORT_BINARY_LOW)) SRL_RDR_ERROR_UNEXPECTED(mrg->pibuf, tag, "SRL_HDR_SHORT_BINARY"); srl_buf_copy_content_nocheck(aTHX_ mrg, SRL_HDR_SHORT_BINARY_LEN_FROM_TAG(tag) + 1); break; case SRL_HDR_OBJECTV: case SRL_HDR_OBJECTV_FREEZE: mrg->ibuf.pos++; // skip tag in input buffer offset = srl_read_varint_uv_offset(aTHX_ mrg->pibuf, " while reading OBJECTV/OBJECTV_FREEZE"); offset = srl_lookup_tracked_offset(aTHX_ mrg, offset); // convert ibuf offset to obuf offset srl_buf_cat_varint(aTHX_ &mrg->obuf, tag, offset); goto read_again; case SRL_HDR_PAD: while (SRL_RDR_NOT_DONE(mrg->pibuf) && *mrg->ibuf.pos == SRL_HDR_PAD) { srl_buf_cat_tag_nocheck(mrg, SRL_HDR_PAD); } goto read_again; default: SRL_RDR_ERROR_UNIMPLEMENTED(mrg->pibuf, tag, ""); break; } } } --mrg->recursion_depth; DEBUG_ASSERT_RDR_SANE(mrg->pibuf); DEBUG_ASSERT_BUF_SANE(&mrg->obuf); }