mirror of
https://github.com/verilator/verilator.git
synced 2025-01-10 00:27:35 +00:00
73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
// -*- C++ -*-
|
||
//*************************************************************************
|
||
// DESCRIPTION: Verilator: Hash AST trees to find duplicates
|
||
//
|
||
// Code available from: http://www.veripool.org/verilator
|
||
//
|
||
// AUTHORS: Wilson Snyder with Paul Wasson, Duane Gabli
|
||
//
|
||
//*************************************************************************
|
||
//
|
||
// Copyright 2005-2011 by Wilson Snyder. This program is free software; you can
|
||
// redistribute it and/or modify it under the terms of either the GNU
|
||
// Lesser General Public License Version 3 or the Perl Artistic License
|
||
// Version 2.0.
|
||
//
|
||
// Verilator is distributed in the hope that it will be useful,
|
||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
// GNU General Public License for more details.
|
||
//
|
||
//*************************************************************************
|
||
|
||
#ifndef _V3HASHED_H_
|
||
#define _V3HASHED_H_ 1
|
||
#include "config_build.h"
|
||
#include "verilatedos.h"
|
||
#include "V3Error.h"
|
||
#include "V3Ast.h"
|
||
|
||
#include <map>
|
||
|
||
//============================================================================
|
||
|
||
class V3Hashed {
|
||
// NODE STATE
|
||
// AstNode::user4() -> V3Hash. Hash value of this node (hash of 0 is illegal)
|
||
AstUser4InUse m_inuser4;
|
||
|
||
// TYPES
|
||
typedef multimap<V3Hash,AstNode*> HashMmap;
|
||
public:
|
||
typedef HashMmap::iterator iterator;
|
||
private:
|
||
// MEMBERS
|
||
HashMmap m_hashMmap; // hashvalue -> nodes with that hash
|
||
|
||
public:
|
||
// CONSTRUCTORS
|
||
V3Hashed();
|
||
~V3Hashed() {}
|
||
// ACCESSORS
|
||
HashMmap& mmap() { return m_hashMmap; } // Return map for iteration
|
||
HashMmap::iterator begin() { return m_hashMmap.begin(); }
|
||
HashMmap::iterator end() { return m_hashMmap.end(); }
|
||
|
||
// METHODS
|
||
static int debug() {
|
||
static int level = -1;
|
||
if (VL_UNLIKELY(level < 0)) level = v3Global.opt.debugSrcLevel(__FILE__);
|
||
return level;
|
||
}
|
||
void clear() { m_hashMmap.clear(); }
|
||
void hashAndInsert(AstNode* nodep); // Hash the node, and insert into map
|
||
bool sameNodes(AstNode* node1p, AstNode* node2p); // After hashing, and tell if identical
|
||
void erase(iterator it); // Remove node from structures
|
||
iterator findDuplicate(AstNode* nodep); // Return duplicate in hash, if any
|
||
AstNode* iteratorNodep(iterator it) { return it->second; }
|
||
void dumpFile(const string& filename, bool tree);
|
||
void dumpFilePrefixed(const string& nameComment, bool tree=false);
|
||
};
|
||
|
||
#endif // Guard
|