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79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
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//*************************************************************************
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// DESCRIPTION: Verilator: Netlist (top level) functions
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//
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// Code available from: http://www.veripool.org/verilator
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//
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// AUTHORS: Wilson Snyder with Paul Wasson, Duane Gabli
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//
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//*************************************************************************
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//
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// Copyright 2003-2009 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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#include "config_build.h"
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#include "verilatedos.h"
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#include <cstdio>
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#include <cstdarg>
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#include <unistd.h>
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#include <fstream>
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#include "V3Error.h"
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#include "V3Global.h"
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#include "V3File.h"
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#include "V3ParseImp.h"
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//======================================================================
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// Build in LEX script
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#define yyFlexLexer V3LexerBase
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#include "V3Lexer.yy.cpp"
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#undef yyFlexLexer
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//######################################################################
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// Lex-derived class
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/// Override the base lexer class so we can add some access functions
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class V3Lexer : public V3LexerBase {
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public:
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// CONSTRUCTORS
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V3Lexer() : V3LexerBase(NULL) {}
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~V3Lexer() {}
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// METHODS
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void stateExitPsl() {
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if (YY_START != PSL) yyerrorf("Internal error: Exiting PSL state when not in PSL state");
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yy_pop_state();
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}
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void statePushVlg() {
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yy_push_state(STATE_VERILOG_RECENT);
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}
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void statePop() {
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yy_pop_state();
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}
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};
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void V3ParseImp::stateExitPsl() { parsep()->m_lexerp->stateExitPsl(); }
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void V3ParseImp::statePushVlg() { parsep()->m_lexerp->stateExitPsl(); }
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void V3ParseImp::statePop() { parsep()->m_lexerp->statePop(); }
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int V3ParseImp::yylexThis() { parsep()->m_lexerp->yylex(); }
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//######################################################################
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// Read class functions
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void V3ParseImp::lexNew(int debug) {
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if (m_lexerp) delete m_lexerp; // Restart from clean slate.
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m_lexerp = new V3Lexer();
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if (debugFlex()>=9) { m_lexerp->set_debug(~0); }
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}
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void V3ParseImp::lexDestroy() {
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if (m_lexerp) { delete m_lexerp; m_lexerp = NULL; }
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}
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