forked from github/verilator
127 lines
4.1 KiB
C++
127 lines
4.1 KiB
C++
// -*- mode: C++; c-file-style: "cc-mode" -*-
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//*************************************************************************
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// DESCRIPTION: Verilator: Handle SV classes
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//
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// Code available from: https://verilator.org
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//
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//*************************************************************************
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//
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// Copyright 2003-2020 by Wilson Snyder. This program is free software; you can
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// redistribute it and/or modify it under the terms of either the GNU
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// Lesser General Public License Version 3 or the Perl Artistic License
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// Version 2.0.
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//
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// Verilator is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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//*************************************************************************
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// V3Class's Transformations:
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//
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// Each module:
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// Each cell:
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// Create CUse for cell forward declaration
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//
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//*************************************************************************
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#include "config_build.h"
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#include "verilatedos.h"
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#include "V3Global.h"
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#include "V3CUse.h"
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#include "V3Ast.h"
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#include "V3EmitCBase.h"
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#include VL_INCLUDE_UNORDERED_MAP
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//######################################################################
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class CUseState {
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private:
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// MEMBERS
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AstNodeModule* m_modInsertp; // Current module to insert AstCUse under
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typedef std::pair<VUseType, string> UseString;
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std::map<UseString, AstCUse*> m_didUse; // What we already used
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// NODE STATE
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// Entire netlist:
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// AstClass::user1() -> bool. True if class needs to_string dumper
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AstUser1InUse m_inuser1;
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// METHODS
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VL_DEBUG_FUNC; // Declare debug()
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public:
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AstCUse* newUse(AstNode* nodep, VUseType useType, const string& name) {
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UseString key(useType, name);
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if (m_didUse.find(key) == m_didUse.end()) {
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AstCUse* newp = new AstCUse(nodep->fileline(), useType, name);
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m_modInsertp->addStmtp(newp);
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UINFO(8, "Insert " << newp << endl);
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m_didUse[key] = newp;
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}
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return m_didUse[key];
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}
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// CONSTRUCTORS
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explicit CUseState(AstNodeModule* nodep)
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: m_modInsertp(nodep) {}
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virtual ~CUseState() {}
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VL_UNCOPYABLE(CUseState);
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};
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class CUseVisitor : public AstNVisitor {
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// MEMBERS
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CUseState m_state; // Inserter state
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// METHODS
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VL_DEBUG_FUNC; // Declare debug()
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// Module use builders
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void makeUseCells(AstNodeModule* nodep) {
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for (AstNode* itemp = nodep->stmtsp(); itemp; itemp = itemp->nextp()) {
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if (AstCell* cellp = VN_CAST(itemp, Cell)) {
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// Currently no include because we include __Syms which has them all
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AstCUse* usep
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= m_state.newUse(nodep, VUseType::INT_FWD_CLASS, cellp->modp()->name());
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}
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}
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}
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// VISITORS
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virtual void visit(AstNodeModule* nodep) VL_OVERRIDE {
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if (v3Global.opt.trace()) {
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AstCUse* usep
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= m_state.newUse(nodep, VUseType::INT_FWD_CLASS, v3Global.opt.traceClassBase());
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usep->protect(false);
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}
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makeUseCells(nodep);
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}
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virtual void visit(AstNode* nodep) VL_OVERRIDE {} // All in AstNodeModule
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public:
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// CONSTRUCTORS
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explicit CUseVisitor(AstNodeModule* nodep)
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: m_state(nodep) {
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iterate(nodep);
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}
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virtual ~CUseVisitor() {}
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VL_UNCOPYABLE(CUseVisitor);
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};
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//######################################################################
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// Class class functions
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void V3CUse::cUseAll(AstNetlist* nodep) {
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UINFO(2, __FUNCTION__ << ": " << endl);
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// Call visitor separately for each module, so visitor state is cleared
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for (AstNodeModule* nodep = v3Global.rootp()->modulesp(); nodep;
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nodep = VN_CAST(nodep->nextp(), NodeModule)) {
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// Insert under this module; someday we should e.g. make Ast
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// for each output file and put under that
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CUseVisitor visitor(nodep);
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}
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V3Global::dumpCheckGlobalTree("cuse", 0, v3Global.opt.dumpTreeLevel(__FILE__) >= 3);
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}
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