source: src/CodeGen/OperatorTable.cpp @ 790f251

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// OperatorTable.cpp --
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Andrew Beach
// Last Modified On : Fri Nov  3 16:00:00 2023
// Update Count     : 56
//

#include "OperatorTable.hpp"

#include <cassert>         // for assert
#include <unordered_map>   // for unordered_map

namespace CodeGen {

static const OperatorInfo tableValues[] = {
        //  inputName symbol  outputName                     friendlyName                  type
        {       "?[?]",   "",     "_operator_index",             "Index",                      OT_INDEX          },
        {       "?{}",    "=",    "_constructor",                "Constructor",                OT_CTOR           },
        {       "^?{}",   "",     "_destructor",                 "Destructor",                 OT_DTOR           },
        {       "?()",    "",     "_operator_call",              "Call Operator",              OT_CALL           },
        {       "?++",    "++",   "_operator_postincr",          "Postfix Increment",          OT_POSTFIXASSIGN  },
        {       "?--",    "--",   "_operator_postdecr",          "Postfix Decrement",          OT_POSTFIXASSIGN  },
        {       "*?",     "*",    "_operator_deref",             "Dereference",                OT_PREFIX         },
        {       "+?",     "+",    "_operator_unaryplus",         "Plus",                       OT_PREFIX         },
        {       "-?",     "-",    "_operator_unaryminus",        "Minus",                      OT_PREFIX         },
        {       "~?",     "~",    "_operator_bitnot",            "Bitwise Not",                OT_PREFIX         },
        {       "!?",     "!",    "_operator_lognot",            "Logical Not",                OT_PREFIX         },
        {       "++?",    "++",   "_operator_preincr",           "Prefix Increment",           OT_PREFIXASSIGN   },
        {       "--?",    "--",   "_operator_predecr",           "Prefix Decrement",           OT_PREFIXASSIGN   },
        {       "?\\?",   "\\",   "_operator_exponential",       "Exponentiation",             OT_INFIX          },
        {       "?*?",    "*",    "_operator_multiply",          "Multiplication",             OT_INFIX          },
        {       "?/?",    "/",    "_operator_divide",            "Division",                   OT_INFIX          },
        {       "?%?",    "%",    "_operator_modulus",           "Modulo",                     OT_INFIX          },
        {       "?+?",    "+",    "_operator_add",               "Addition",                   OT_INFIX          },
        {       "?-?",    "-",    "_operator_subtract",          "Substraction",               OT_INFIX          },
        {       "?<<?",   "<<",   "_operator_shiftleft",         "Shift Left",                 OT_INFIX          },
        {       "?>>?",   ">>",   "_operator_shiftright",        "Shift Right",                OT_INFIX          },
        {       "?<?",    "<",    "_operator_less",              "Less-than",                  OT_INFIX          },
        {       "?>?",    ">",    "_operator_greater",           "Greater-than",               OT_INFIX          },
        {       "?<=?",   "<=",   "_operator_lessequal",         "Less-than-or-Equal",         OT_INFIX          },
        {       "?>=?",   ">=",   "_operator_greaterequal",      "Greater-than-or-Equal",      OT_INFIX          },
        {       "?==?",   "==",   "_operator_equal",             "Equality",                   OT_INFIX          },
        {       "?!=?",   "!=",   "_operator_notequal",          "Not-Equal",                  OT_INFIX          },
        {       "?&?",    "&",    "_operator_bitand",            "Bitwise And",                OT_INFIX          },
        {       "?^?",    "^",    "_operator_bitxor",            "Bitwise Xor",                OT_INFIX          },
        {       "?|?",    "|",    "_operator_bitor",             "Bitwise Or",                 OT_INFIX          },
        {       "?=?",    "=",    "_operator_assign",            "Assignment",                 OT_INFIXASSIGN    },
        {       "?\\=?",  "\\=",  "_operator_expassign",         "Exponentiation Assignment",  OT_INFIXASSIGN    },
        {       "?*=?",   "*=",   "_operator_multassign",        "Multiplication Assignment",  OT_INFIXASSIGN    },
        {       "?/=?",   "/=",   "_operator_divassign",         "Division Assignment",        OT_INFIXASSIGN    },
        {       "?%=?",   "%=",   "_operator_modassign",         "Modulo Assignment",          OT_INFIXASSIGN    },
        {       "?+=?",   "+=",   "_operator_addassign",         "Addition Assignment",        OT_INFIXASSIGN    },
        {       "?-=?",   "-=",   "_operator_subassign",         "Substrction Assignment",     OT_INFIXASSIGN    },
        {       "?<<=?",  "<<=",  "_operator_shiftleftassign",   "Shift Left Assignment",      OT_INFIXASSIGN    },
        {       "?>>=?",  ">>=",  "_operator_shiftrightassign",  "Shift Right Assignment",     OT_INFIXASSIGN    },
        {       "?&=?",   "&=",   "_operator_bitandassign",      "Bitwise And Assignment",     OT_INFIXASSIGN    },
        {       "?^=?",   "^=",   "_operator_bitxorassign",      "Bitwise Xor Assignment",     OT_INFIXASSIGN    },
        {       "?|=?",   "|=",   "_operator_bitorassign",       "Bitwise Or Assignment",      OT_INFIXASSIGN    },
}; // tableValues

enum { numOps = sizeof( tableValues ) / sizeof( OperatorInfo ) };

const OperatorInfo * operatorLookup( const std::string & inputName ) {
        // Static information set up:
        static std::unordered_map<std::string, const OperatorInfo *> inputTable;
        if ( inputTable.empty() ) for ( const OperatorInfo & op : tableValues ) {
                inputTable[ op.inputName ] = &op;
        }

        if ( inputName.find_first_of( "?^*+-!", 0, 1 ) == std::string::npos ) return nullptr; // prefilter
        const OperatorInfo * ret = inputTable.find( inputName )->second;
        // This can only happen if an invalid identifier name has been used.
        assert( ret );
        return ret;
}

bool isOperator( const std::string & inputName ) {
        return operatorLookup( inputName ) != nullptr;
}

std::string operatorFriendlyName( const std::string & inputName ) {
        const OperatorInfo * info = operatorLookup( inputName );
        if ( info ) return info->friendlyName;
        return "";
}

// This is only used in the demangler, so it is smaller (and only maybe slow).
const OperatorInfo * operatorLookupByOutput( const std::string & outputName ) {
        if ( '_' != outputName[0] ) return nullptr;
        for ( const OperatorInfo & op : tableValues ) {
                if ( outputName == op.outputName ) {
                        return &op;
                }
        }
        return nullptr;
}

bool isConstructor( const std::string & inputName ) {
        const OperatorInfo * info = operatorLookup( inputName );
        if ( info ) return info->type == OT_CTOR;
        return false;
}

bool isDestructor( const std::string & inputName ) {
        const OperatorInfo * info = operatorLookup( inputName );
        if ( info ) return info->type == OT_DTOR;
        return false;
}

bool isCtorDtor( const std::string & inputName ) {
        const OperatorInfo * info = operatorLookup( inputName );
        if ( info ) return info->type <= OT_CONSTRUCTOR;
        return false;
}

bool isAssignment( const std::string & inputName ) {
        const OperatorInfo * info = operatorLookup( inputName );
        if ( info ) return info->type > OT_CONSTRUCTOR && info->type <= OT_ASSIGNMENT;
        return false;
}

bool isCtorDtorAssign( const std::string & inputName ) {
        const OperatorInfo * info = operatorLookup( inputName );
        if ( info ) return info->type <= OT_ASSIGNMENT;
        return false;
}

} // namespace CodeGen

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