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Diffstat (limited to 'src/goto.h')
| -rw-r--r-- | src/goto.h | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/src/goto.h b/src/goto.h deleted file mode 100644 index dcf13448..00000000 --- a/src/goto.h +++ /dev/null @@ -1,226 +0,0 @@ -/* - * Copyright 2001-2018 Adrian Thurston <thurston@colm.net> - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef _C_GOTO_H -#define _C_GOTO_H - -#include <iostream> -#include "codegen.h" - -/* Forwards. */ -struct CodeGenData; -struct NameInst; -struct RedTransAp; -struct RedStateAp; -struct GenStateCond; - -struct IpLabel -{ - IpLabel() - : - type(None), - stid(0), - isReferenced(false) - {} - - enum Type - { - None = 1, - TestEof, - Ctr, - St, - Out, - Pop - }; - - std::string reference() - { - isReferenced = true; - return define(); - } - - std::string define() - { - std::stringstream ss; - switch ( type ) { - case None: break; - case TestEof: - ss << "_test_eof" << stid; - break; - case Ctr: - ss << "_ctr" << stid; - break; - case St: - ss << "_st" << stid; - break; - case Out: - ss << "_out" << stid; - break; - case Pop: - ss << "_pop" << stid; - break; - } - - return ss.str(); - } - - Type type; - int stid; - bool isReferenced; -}; - - -/* - * Goto driven fsm. - */ -class Goto - : public CodeGen -{ -public: - enum Type { - Loop = 1, - Exp, - Ip - }; - - Goto( const CodeGenArgs &args, Type type ) - : - CodeGen( args ), - type(type), - acts( "_acts" ), - nacts( "_nacts" ), - ck( "_ck" ), - nbreak( "_nbreak" ), - ps( "_ps" ), - _out("_out"), - _pop("_pop"), - _again("_again"), - _resume("_resume"), - _test_eof("_test_eof"), - actions( "actions", *this ), - toStateActions( "to_state_actions", *this ), - fromStateActions( "from_state_actions", *this ), - eofActions( "eof_actions", *this ), - ctrLabel(0) - {} - - void tableDataPass(); - virtual void genAnalysis(); - virtual void writeData(); - virtual void writeExec(); - - std::ostream &TRANSITION( RedCondPair *pair ); - - void FROM_STATE_ACTION_EMIT( RedStateAp *state ); - - std::ostream &STATE_CASES(); - std::ostream &TRANSITIONS(); - - Type type; - - Variable acts; - Variable nacts; - Variable ck; - Variable nbreak; - Variable ps; - - GotoLabel _out; - GotoLabel _pop; - GotoLabel _again; - GotoLabel _resume; - GotoLabel _test_eof; - - TableArray actions; - TableArray toStateActions; - TableArray fromStateActions; - TableArray eofActions; - - IpLabel *ctrLabel; - - void taActions(); - void taToStateActions(); - void taFromStateActions(); - void taEofActions(); - void taNfaTargs(); - void taNfaOffsets(); - void taNfaPushActions(); - void taNfaPopTrans(); - - void EOF_CHECK( ostream &ret ); - - void GOTO( ostream &ret, int gotoDest, bool inFinish ); - void CALL( ostream &ret, int callDest, int targState, bool inFinish ); - void NCALL( ostream &ret, int callDest, int targState, bool inFinish ); - void NEXT( ostream &ret, int nextDest, bool inFinish ); - void GOTO_EXPR( ostream &ret, GenInlineItem *ilItem, bool inFinish ); - void NEXT_EXPR( ostream &ret, GenInlineItem *ilItem, bool inFinish ); - void CALL_EXPR( ostream &ret, GenInlineItem *ilItem, int targState, bool inFinish ); - void NCALL_EXPR( ostream &ret, GenInlineItem *ilItem, int targState, bool inFinish ); - void CURS( ostream &ret, bool inFinish ); - void TARGS( ostream &ret, bool inFinish, int targState ); - void RET( ostream &ret, bool inFinish ); - void NRET( ostream &ret, bool inFinish ); - void BREAK( ostream &ret, int targState, bool csForced ); - void NBREAK( ostream &ret, int targState, bool csForced ); - - virtual unsigned int TO_STATE_ACTION( RedStateAp *state ); - virtual unsigned int FROM_STATE_ACTION( RedStateAp *state ); - virtual unsigned int EOF_ACTION( RedStateAp *state ); - - virtual std::ostream &EXEC_FUNCS() = 0; - virtual std::ostream &TO_STATE_ACTION_SWITCH() = 0; - virtual std::ostream &FROM_STATE_ACTION_SWITCH() = 0; - virtual std::ostream &EOF_ACTION_SWITCH() = 0; - - std::ostream &ACTIONS_ARRAY(); - - void setTableState( TableArray::State ); - - virtual std::ostream &COND_GOTO( RedCondPair *trans ); - - string CKEY( CondKey key ); - void COND_B_SEARCH( RedTransAp *trans, CondKey lower, CondKey upper, int low, int high); - - virtual std::ostream &TRANS_GOTO( RedTransAp *trans ); - - void SINGLE_SWITCH( RedStateAp *state ); - void RANGE_B_SEARCH( RedStateAp *state, Key lower, Key upper, int low, int high ); - - /* Called from STATE_GOTOS just before writing the gotos */ - virtual void GOTO_HEADER( RedStateAp *state ); - virtual void STATE_GOTO_ERROR(); - - virtual void NFA_PUSH_ACTION( RedNfaTarg *targ ) = 0; - virtual void NFA_POP_TEST( RedNfaTarg *targ ) {} - virtual void NFA_FROM_STATE_ACTION_EXEC() = 0; - - void NFA_POP() {} - - virtual void FROM_STATE_ACTIONS() = 0; - virtual void TO_STATE_ACTIONS() = 0; - virtual void REG_ACTIONS() = 0; - virtual void EOF_ACTIONS() = 0; - - IpLabel *allocateLabels( IpLabel *labels, IpLabel::Type type, int n ); -}; - -#endif |