| 1 | //
|
|---|
| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
|
|---|
| 3 | //
|
|---|
| 4 | // The contents of this file are covered under the licence agreement in the
|
|---|
| 5 | // file "LICENCE" distributed with Cforall.
|
|---|
| 6 | //
|
|---|
| 7 | // CaseRangeMutator.cc --
|
|---|
| 8 | //
|
|---|
| 9 | // Author : Rodolfo G. Esteves
|
|---|
| 10 | // Created On : Mon May 18 07:44:20 2015
|
|---|
| 11 | // Last Modified By : Peter A. Buhr
|
|---|
| 12 | // Last Modified On : Thu Jul 28 01:56:47 2016
|
|---|
| 13 | // Update Count : 14
|
|---|
| 14 | //
|
|---|
| 15 |
|
|---|
| 16 | #include <list>
|
|---|
| 17 | #include <cassert>
|
|---|
| 18 | #include <cstdlib>
|
|---|
| 19 | #include <iterator>
|
|---|
| 20 |
|
|---|
| 21 | #include "Common/utility.h"
|
|---|
| 22 |
|
|---|
| 23 | #include "SynTree/Statement.h"
|
|---|
| 24 | #include "SynTree/Expression.h"
|
|---|
| 25 | #include "SynTree/Constant.h"
|
|---|
| 26 | #include "SynTree/Type.h"
|
|---|
| 27 | #include "CaseRangeMutator.h"
|
|---|
| 28 |
|
|---|
| 29 | namespace ControlStruct {
|
|---|
| 30 | Statement *CaseRangeMutator::mutate( SwitchStmt *switchStmt ) {
|
|---|
| 31 | std::list< Statement * > &cases = switchStmt->get_branches();
|
|---|
| 32 |
|
|---|
| 33 | // a `for' would be more natural... all this contortions are because `replace' invalidates the iterator
|
|---|
| 34 | std::list< Statement * >::iterator i = cases.begin();
|
|---|
| 35 | while ( i != cases.end() ) {
|
|---|
| 36 | (*i )->acceptMutator( *this );
|
|---|
| 37 |
|
|---|
| 38 | if ( ! newCaseLabels.empty() ) {
|
|---|
| 39 | std::list< Statement * > newCases;
|
|---|
| 40 |
|
|---|
| 41 | // transform( newCaseLabels.begin(), newCaseLabels.end(), bnd1st( ptr_fun( ctor< CaseStmt, Label, Expression * > ) ) );
|
|---|
| 42 |
|
|---|
| 43 | for ( std::list< Expression * >::iterator j = newCaseLabels.begin();
|
|---|
| 44 | j != newCaseLabels.end(); j++ ) {
|
|---|
| 45 | std::list<Label> emptyLabels;
|
|---|
| 46 | std::list< Statement *> emptyStmts;
|
|---|
| 47 | newCases.push_back( new CaseStmt( emptyLabels, *j, emptyStmts ) );
|
|---|
| 48 | } // for
|
|---|
| 49 |
|
|---|
| 50 | if ( CaseStmt *currentCase = dynamic_cast< CaseStmt * > ( *i ) )
|
|---|
| 51 | if ( ! currentCase->get_statements().empty() ) {
|
|---|
| 52 | CaseStmt *lastCase = dynamic_cast< CaseStmt * > ( newCases.back() );
|
|---|
| 53 | if ( lastCase == 0 ) { throw ( 0 ); /* FIXME */ } // something is very wrong, as I just made these, and they were all cases
|
|---|
| 54 | // transfer the statement block ( if any ) to the new list:
|
|---|
| 55 | lastCase->set_statements( currentCase->get_statements() );
|
|---|
| 56 | } // if
|
|---|
| 57 | std::list< Statement * >::iterator j = i; advance( j, 1 );
|
|---|
| 58 | replace ( cases, i, newCases );
|
|---|
| 59 | i = j;
|
|---|
| 60 | newCaseLabels.clear();
|
|---|
| 61 | } else
|
|---|
| 62 | i++;
|
|---|
| 63 | } // while
|
|---|
| 64 |
|
|---|
| 65 | return switchStmt;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | Statement *CaseRangeMutator::mutate( CaseStmt *caseStmt ) {
|
|---|
| 69 | UntypedExpr *cond;
|
|---|
| 70 | if ( ( cond = dynamic_cast< UntypedExpr * >( caseStmt->get_condition() )) != 0 ) {
|
|---|
| 71 | NameExpr *nmfunc;
|
|---|
| 72 | if ( ( nmfunc = dynamic_cast< NameExpr *>( cond->get_function() )) != 0 ) {
|
|---|
| 73 | if ( nmfunc->get_name() == "Range" ) {
|
|---|
| 74 | assert( cond->get_args().size() == 2 );
|
|---|
| 75 | std::list<Expression *>::iterator i = cond->get_args().begin();
|
|---|
| 76 | Expression *lo = *i, *hi = *(++i ); // "unnecessary" temporaries
|
|---|
| 77 | //fillRange( lo, hi );
|
|---|
| 78 | } // if
|
|---|
| 79 | } // if
|
|---|
| 80 | } else if ( TupleExpr *tcond = dynamic_cast< TupleExpr * >( caseStmt->get_condition() ) ) {
|
|---|
| 81 | // case list
|
|---|
| 82 | assert( ! tcond->get_exprs().empty() );
|
|---|
| 83 | for ( std::list< Expression * >::iterator i = tcond->get_exprs().begin(); i != tcond->get_exprs().end(); i++ )
|
|---|
| 84 | newCaseLabels.push_back( *i ); // do I need to clone them?
|
|---|
| 85 | } // if
|
|---|
| 86 |
|
|---|
| 87 | std::list< Statement * > &stmts = caseStmt->get_statements();
|
|---|
| 88 | mutateAll ( stmts, *this );
|
|---|
| 89 |
|
|---|
| 90 | return caseStmt;
|
|---|
| 91 | }
|
|---|
| 92 |
|
|---|
| 93 | void CaseRangeMutator::fillRange( Expression *lo, Expression *hi ) {
|
|---|
| 94 | // generate the actual range ( and check for consistency )
|
|---|
| 95 | Constant *c_lo, *c_hi;
|
|---|
| 96 | ConstantExpr *ce_lo, *ce_hi;
|
|---|
| 97 | ce_lo = dynamic_cast< ConstantExpr * >( lo );
|
|---|
| 98 | ce_hi = dynamic_cast< ConstantExpr * >( hi );
|
|---|
| 99 |
|
|---|
| 100 | if ( ce_lo && ce_hi ) {
|
|---|
| 101 | std::cout << ce_lo->get_constant()->get_value() << " " << ce_hi->get_constant()->get_value() << std::endl;
|
|---|
| 102 | c_lo = ce_lo->get_constant(); c_hi = ce_hi->get_constant();
|
|---|
| 103 | } /* else {
|
|---|
| 104 | if ( ! ce_lo ) ;
|
|---|
| 105 | if ( ! ce_hi ) ;
|
|---|
| 106 | } */
|
|---|
| 107 | BasicType *ty_lo = dynamic_cast< BasicType * >( c_lo->get_type() ),
|
|---|
| 108 | *ty_hi = dynamic_cast< BasicType * >( c_hi->get_type() );
|
|---|
| 109 |
|
|---|
| 110 | if ( ! ty_lo || ! ty_hi )
|
|---|
| 111 | return; // one of them is not a constant
|
|---|
| 112 | #if 0
|
|---|
| 113 | switch ( ty_lo->get_kind() ) {
|
|---|
| 114 | case BasicType::Char:
|
|---|
| 115 | case BasicType::UnsignedChar:
|
|---|
| 116 | switch ( ty_hi->get_kind() ) {
|
|---|
| 117 | case BasicType::Char:
|
|---|
| 118 | case BasicType::UnsignedChar:
|
|---|
| 119 | // first case, they are both printable ASCII characters represented as 'x'
|
|---|
| 120 | if ( c_lo->get_value().size() == 3 && c_hi->get_value().size() == 3 ) {
|
|---|
| 121 | char ch_lo = ( c_lo->get_value())[1], ch_hi = ( c_hi->get_value())[1];
|
|---|
| 122 |
|
|---|
| 123 | if ( ch_lo > ch_hi ) { char t=ch_lo; ch_lo=ch_hi; ch_hi=t; }
|
|---|
| 124 |
|
|---|
| 125 | for ( char c = ch_lo; c <= ch_hi; c++ ) {
|
|---|
| 126 | Type::Qualifiers q;
|
|---|
| 127 | Constant cnst( new BasicType( q, BasicType::Char ),
|
|---|
| 128 | std::string("'") + c + std::string("'") );
|
|---|
| 129 | newCaseLabels.push_back( new ConstantExpr( cnst ) );
|
|---|
| 130 | } // for
|
|---|
| 131 |
|
|---|
| 132 | return;
|
|---|
| 133 | } // if
|
|---|
| 134 | break;
|
|---|
| 135 | default:
|
|---|
| 136 | // error: incompatible constants
|
|---|
| 137 | break;
|
|---|
| 138 | } // switch
|
|---|
| 139 | break;
|
|---|
| 140 | case BasicType::ShortSignedInt:
|
|---|
| 141 | case BasicType::ShortUnsignedInt:
|
|---|
| 142 | case BasicType::SignedInt:
|
|---|
| 143 | case BasicType::UnsignedInt:
|
|---|
| 144 | case BasicType::LongSignedInt:
|
|---|
| 145 | case BasicType::LongUnsignedInt:
|
|---|
| 146 | case BasicType::LongLongSignedInt:
|
|---|
| 147 | case BasicType::LongLongUnsignedInt:
|
|---|
| 148 | switch ( ty_hi->get_kind() ) {
|
|---|
| 149 | case BasicType::ShortSignedInt:
|
|---|
| 150 | case BasicType::ShortUnsignedInt:
|
|---|
| 151 | case BasicType::SignedInt:
|
|---|
| 152 | case BasicType::UnsignedInt:
|
|---|
| 153 | case BasicType::LongSignedInt:
|
|---|
| 154 | case BasicType::LongUnsignedInt:
|
|---|
| 155 | case BasicType::LongLongSignedInt:
|
|---|
| 156 | case BasicType::LongLongUnsignedInt: {
|
|---|
| 157 | int i_lo = atoi( c_lo->get_value().c_str()),
|
|---|
| 158 | i_hi = atoi( c_hi->get_value().c_str());
|
|---|
| 159 |
|
|---|
| 160 | if ( i_lo > i_hi ) { int t=i_lo; i_lo=i_hi; i_hi=t; }
|
|---|
| 161 |
|
|---|
| 162 | for ( int c = i_lo; c <= i_hi; c++ ) {
|
|---|
| 163 | Type::Qualifiers q;
|
|---|
| 164 | Constant cnst( new BasicType( q, ty_hi->get_kind()), // figure can't hurt (used to think in positives)
|
|---|
| 165 | toString< int >( c ) );
|
|---|
| 166 | newCaseLabels.push_back( new ConstantExpr( cnst ) );
|
|---|
| 167 | }
|
|---|
| 168 |
|
|---|
| 169 | return;
|
|---|
| 170 | }
|
|---|
| 171 | default:
|
|---|
| 172 | // error: incompatible constants
|
|---|
| 173 | break;
|
|---|
| 174 | }
|
|---|
| 175 | break;
|
|---|
| 176 | default:
|
|---|
| 177 | break;
|
|---|
| 178 | } // switch
|
|---|
| 179 | #endif
|
|---|
| 180 | /* End: */{
|
|---|
| 181 | // invalid range, signal a warning (it still generates the two case labels)
|
|---|
| 182 | // newCaseLabels.push_back( lo );
|
|---|
| 183 | // newCaseLabels.push_back( hi );
|
|---|
| 184 | return;
|
|---|
| 185 | }
|
|---|
| 186 | }
|
|---|
| 187 | } // namespace ControlStruct
|
|---|
| 188 |
|
|---|
| 189 | // Local Variables: //
|
|---|
| 190 | // tab-width: 4 //
|
|---|
| 191 | // mode: c++ //
|
|---|
| 192 | // compile-command: "make install" //
|
|---|
| 193 | // End: //
|
|---|
