mirror of
https://github.com/YosysHQ/yosys
synced 2025-12-23 12:43:46 +00:00
46cb05c471
When IdString refcounting was expensive, it made sense to pass it by const reference instead of by value, to avoid refcount churn. Now that IdString is not refcounted, it's slightly more efficient to pass it by value.
129 lines
3.7 KiB
C++
129 lines
3.7 KiB
C++
/*
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* yosys -- Yosys Open SYnthesis Suite
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*
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* Copyright (C) 2024 Jannis Harder <jix@yosyshq.com> <me@jix.one>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#include "kernel/scopeinfo.h"
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YOSYS_NAMESPACE_BEGIN
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template <typename I, typename Filter> void ModuleHdlnameIndex::index_items(I begin, I end, Filter filter)
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{
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for (; begin != end; ++begin) {
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auto const &item = *begin;
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if (!filter(item))
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continue;
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std::vector<IdString> path = parse_hdlname(item);
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if (!path.empty())
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lookup.emplace(item, tree.insert(path, item));
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}
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}
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void ModuleHdlnameIndex::index()
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{
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index_wires();
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index_cells();
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}
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void ModuleHdlnameIndex::index_wires()
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{
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auto wires = module->wires();
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index_items(wires.begin(), wires.end(), [](Wire *) { return true; });
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}
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void ModuleHdlnameIndex::index_cells()
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{
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auto cells = module->cells();
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index_items(cells.begin(), cells.end(), [](Cell *) { return true; });
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}
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void ModuleHdlnameIndex::index_scopeinfo_cells()
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{
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auto cells = module->cells();
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index_items(cells.begin(), cells.end(), [](Cell *cell) { return cell->type == ID($scopeinfo); });
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}
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std::vector<std::string> ModuleHdlnameIndex::scope_sources(Cursor cursor)
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{
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std::vector<std::string> result;
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for (; !cursor.is_root(); cursor = cursor.parent()) {
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if (!cursor.has_entry()) {
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result.push_back("");
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result.push_back("");
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continue;
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}
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Cell *cell = cursor.entry().cell();
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if (cell == nullptr || cell->type != ID($scopeinfo)) {
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result.push_back("");
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result.push_back("");
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continue;
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}
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result.push_back(scopeinfo_get_attribute(cell, ScopeinfoAttrs::Module, ID::src).decode_string());
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result.push_back(scopeinfo_get_attribute(cell, ScopeinfoAttrs::Cell, ID::src).decode_string());
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}
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result.push_back(module->get_src_attribute());
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std::reverse(result.begin(), result.end());
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return result;
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}
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static const char *attr_prefix(ScopeinfoAttrs attrs)
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{
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switch (attrs) {
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case ScopeinfoAttrs::Cell:
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return "\\cell_";
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case ScopeinfoAttrs::Module:
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return "\\module_";
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default:
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log_abort();
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}
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}
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bool scopeinfo_has_attribute(const RTLIL::Cell *scopeinfo, ScopeinfoAttrs attrs, RTLIL::IdString id)
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{
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log_assert(scopeinfo->type == ID($scopeinfo));
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return scopeinfo->has_attribute(attr_prefix(attrs) + RTLIL::unescape_id(id));
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}
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RTLIL::Const scopeinfo_get_attribute(const RTLIL::Cell *scopeinfo, ScopeinfoAttrs attrs, RTLIL::IdString id)
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{
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log_assert(scopeinfo->type == ID($scopeinfo));
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auto found = scopeinfo->attributes.find(attr_prefix(attrs) + RTLIL::unescape_id(id));
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if (found == scopeinfo->attributes.end())
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return RTLIL::Const();
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return found->second;
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}
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dict<RTLIL::IdString, RTLIL::Const> scopeinfo_attributes(const RTLIL::Cell *scopeinfo, ScopeinfoAttrs attrs)
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{
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dict<RTLIL::IdString, RTLIL::Const> attributes;
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const char *prefix = attr_prefix(attrs);
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int prefix_len = strlen(prefix);
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for (auto const &entry : scopeinfo->attributes)
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if (entry.first.begins_with(prefix))
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attributes.emplace(RTLIL::escape_id(entry.first.c_str() + prefix_len), entry.second);
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return attributes;
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}
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YOSYS_NAMESPACE_END
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