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/********************* */
/*! \file rewrites.h
** \verbatim
** Top contributors (to current version):
** Andrew Reynolds
** This file is part of the CVC4 project.
** Copyright (c) 2009-2019 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Type for rewrites for strings.
**/
#include "cvc4_private.h"
#ifndef CVC4__THEORY__STRINGS__REWRITES_H
#define CVC4__THEORY__STRINGS__REWRITES_H
#include <iosfwd>
namespace CVC4 {
namespace theory {
namespace strings {
/** Types of rewrites used by strings
*
* This rewrites are documented where they are used in the rewriter.
*/
enum class Rewrite : uint32_t
{
CTN_COMPONENT,
CTN_CONCAT_CHAR,
CTN_CONST,
CTN_EQ,
CTN_LEN_INEQ,
CTN_LEN_INEQ_NSTRICT,
CTN_LHS_EMPTYSTR,
CTN_MSET_NSS,
CTN_NCONST_CTN_CONCAT,
CTN_REPL,
CTN_REPL_CHAR,
CTN_REPL_CNSTS_TO_CTN,
CTN_REPL_EMPTY,
CTN_REPL_LEN_ONE_TO_CTN,
CTN_REPL_SELF,
CTN_REPL_SIMP_REPL,
CTN_REPL_TO_CTN,
CTN_REPL_TO_CTN_DISJ,
CTN_RHS_EMPTYSTR,
CTN_RPL_NON_CTN,
CTN_SPLIT,
CTN_SPLIT_ONES,
CTN_STRIP_ENDPT,
CTN_SUBSTR,
EQ_LEN_DEQ,
EQ_NCTN,
EQ_NFIX,
FROM_CODE_EVAL,
IDOF_DEF_CTN,
IDOF_EMP_IDOF,
IDOF_EQ_CST_START,
IDOF_EQ_NORM,
IDOF_EQ_NSTART,
IDOF_FIND,
IDOF_LEN,
IDOF_MAX,
IDOF_NCTN,
IDOF_NEG,
IDOF_NFIND,
IDOF_NORM_PREFIX,
IDOF_PULL_ENDPT,
IDOF_STRIP_CNST_ENDPTS,
IDOF_STRIP_SYM_LEN,
ITOS_EVAL,
RE_AND_EMPTY,
RE_ANDOR_FLATTEN,
RE_ANDOR_INC_CONFLICT,
RE_CHAR_IN_STR_STAR,
RE_CONCAT,
RE_CONCAT_FLATTEN,
RE_CONCAT_OPT,
RE_CONCAT_PURE_ALLCHAR,
RE_CONCAT_TO_CONTAINS,
RE_EMPTY_IN_STR_STAR,
RE_IN_DIST_CHAR_STAR,
RE_IN_SIGMA_STAR,
RE_LOOP,
RE_LOOP_STAR,
RE_OR_ALL,
RE_SIMPLE_CONSUME,
RE_STAR_EMPTY,
RE_STAR_EMPTY_STRING,
RE_STAR_NESTED_STAR,
RE_STAR_UNION,
REPL_CHAR_NCONTRIB_FIND,
REPL_DUAL_REPL_ITE,
REPL_REPL_SHORT_CIRCUIT,
REPL_REPL2_INV,
REPL_REPL2_INV_ID,
REPL_REPL3_INV,
REPL_REPL3_INV_ID,
REPL_SUBST_IDX,
REPLALL_CONST,
REPLALL_EMPTY_FIND,
RPL_CCTN,
RPL_CCTN_RPL,
RPL_CNTS_SUBSTS,
RPL_CONST_FIND,
RPL_CONST_NFIND,
RPL_EMP_CNTS_SUBSTS,
RPL_ID,
RPL_NCTN,
RPL_PULL_ENDPT,
RPL_REPLACE,
RPL_RPL_EMPTY,
RPL_RPL_LEN_ID,
RPL_X_Y_X_SIMP,
SPLIT_EQ,
SPLIT_EQ_STRIP_L,
SPLIT_EQ_STRIP_R,
SS_COMBINE,
SS_CONST_END_OOB,
SS_CONST_LEN_MAX_OOB,
SS_CONST_LEN_NON_POS,
SS_CONST_SS,
SS_CONST_START_MAX_OOB,
SS_CONST_START_NEG,
SS_CONST_START_OOB,
SS_EMPTYSTR,
SS_END_PT_NORM,
SS_GEQ_ZERO_START_ENTAILS_EMP_S,
SS_LEN_INCLUDE,
SS_LEN_NON_POS,
SS_LEN_ONE_Z_Z,
SS_NON_ZERO_LEN_ENTAILS_OOB,
SS_START_ENTAILS_ZERO_LEN,
SS_START_GEQ_LEN,
SS_START_NEG,
SS_STRIP_END_PT,
SS_STRIP_START_PT,
STOI_CONCAT_NONNUM,
STOI_EVAL,
STR_CONV_CONST,
STR_CONV_IDEM,
STR_CONV_ITOS,
STR_CONV_MINSCOPE_CONCAT,
STR_EMP_REPL_EMP,
STR_EMP_REPL_EMP_R,
STR_EMP_REPL_X_Y_X,
STR_EMP_SUBSTR_ELIM,
STR_EMP_SUBSTR_LEQ_LEN,
STR_EMP_SUBSTR_LEQ_Z,
STR_EQ_CONJ_LEN_ENTAIL,
STR_EQ_CONST_NHOMOG,
STR_EQ_HOMOG_CONST,
STR_EQ_REPL_EMP,
STR_EQ_REPL_NOT_CTN,
STR_EQ_REPL_TO_DIS,
STR_EQ_REPL_TO_EQ,
STR_EQ_UNIFY,
STR_LEQ_CPREFIX,
STR_LEQ_EMPTY,
STR_LEQ_EVAL,
STR_LEQ_ID,
STR_REV_CONST,
STR_REV_IDEM,
STR_REV_MINSCOPE_CONCAT,
SUBSTR_REPL_SWAP,
SUF_PREFIX_CONST,
SUF_PREFIX_CTN,
SUF_PREFIX_EMPTY,
SUF_PREFIX_EMPTY_CONST,
SUF_PREFIX_EQ,
SUF_PREFIX_TO_EQS,
TO_CODE_EVAL,
EQ_REFL,
EQ_CONST_FALSE,
EQ_SYM,
CONCAT_NORM,
IS_DIGIT_ELIM,
RE_CONCAT_EMPTY,
RE_CONSUME_CCONF,
RE_CONSUME_S,
RE_CONSUME_S_CCONF,
RE_CONSUME_S_FULL,
RE_IN_EMPTY,
RE_IN_SIGMA,
RE_IN_EVAL,
RE_IN_COMPLEMENT,
RE_IN_RANGE,
RE_IN_CSTRING,
RE_IN_ANDOR,
RE_REPEAT_ELIM,
SUF_PREFIX_ELIM,
STR_LT_ELIM,
RE_RANGE_SINGLE,
RE_OPT_ELIM,
RE_PLUS_ELIM,
RE_DIFF_ELIM,
LEN_EVAL,
LEN_CONCAT,
LEN_REPL_INV,
LEN_CONV_INV,
CHARAT_ELIM
};
/**
* Converts an rewrite to a string. Note: This function is also used in
* `safe_print()`. Changing this functions name or signature will result in
* `safe_print()` printing "<unsupported>" instead of the proper strings for
* the enum values.
*
* @param r The rewrite
* @return The name of the rewrite
*/
const char* toString(Rewrite r);
/**
* Writes an rewrite name to a stream.
*
* @param out The stream to write to
* @param r The rewrite to write to the stream
* @return The stream
*/
std::ostream& operator<<(std::ostream& out, Rewrite r);
} // namespace strings
} // namespace theory
} // namespace CVC4
#endif /* CVC4__THEORY__STRINGS__REWRITES_H */
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