1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // GenPoly.cc -- |
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8 | // |
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9 | // Author : Richard C. Bilson |
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10 | // Created On : Mon May 18 07:44:20 2015 |
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11 | // Last Modified By : Rob Schluntz |
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12 | // Last Modified On : Tue Nov 24 15:23:08 2015 |
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13 | // Update Count : 11 |
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14 | // |
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15 | |
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16 | #include "GenPoly.h" |
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17 | #include "SynTree/Type.h" |
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18 | |
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19 | #include <iostream> |
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20 | using namespace std; |
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21 | |
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22 | namespace GenPoly { |
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23 | /// A function needs an adapter if it returns a polymorphic value or if any of its |
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24 | /// parameters have polymorphic type |
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25 | bool needsAdapter( FunctionType *adaptee, const TyVarMap &tyVars ) { |
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26 | if ( ! adaptee->get_returnVals().empty() && isPolyVal( adaptee->get_returnVals().front()->get_type(), tyVars ) ) { |
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27 | return true; |
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28 | } // if |
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29 | for ( std::list< DeclarationWithType* >::const_iterator innerArg = adaptee->get_parameters().begin(); innerArg != adaptee->get_parameters().end(); ++innerArg ) { |
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30 | if ( isPolyVal( (*innerArg)->get_type(), tyVars ) ) { |
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31 | return true; |
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32 | } // if |
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33 | } // for |
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34 | return false; |
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35 | } |
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36 | |
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37 | bool isPolyRet( FunctionType *function, std::string &name, const TyVarMap &otherTyVars ) { |
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38 | bool doTransform = false; |
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39 | if ( ! function->get_returnVals().empty() ) { |
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40 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType *>( function->get_returnVals().front()->get_type() ) ) { |
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41 | |
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42 | // figure out if the return type is specified by a type parameter |
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43 | for ( std::list< TypeDecl *>::const_iterator tyVar = function->get_forall().begin(); tyVar != function->get_forall().end(); ++tyVar ) { |
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44 | if ( (*tyVar)->get_name() == typeInst->get_name() ) { |
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45 | doTransform = true; |
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46 | name = typeInst->get_name(); |
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47 | break; |
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48 | } // if |
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49 | } // for |
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50 | if ( ! doTransform && otherTyVars.find( typeInst->get_name() ) != otherTyVars.end() ) { |
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51 | doTransform = true; |
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52 | } // if |
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53 | } // if |
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54 | } // if |
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55 | return doTransform; |
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56 | } |
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57 | |
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58 | bool isPolyRet( FunctionType *function, std::string &name ) { |
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59 | TyVarMap dummyTyVars; |
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60 | return isPolyRet( function, name, dummyTyVars ); |
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61 | } |
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62 | |
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63 | bool isPolyRet( FunctionType *function, const TyVarMap &otherTyVars ) { |
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64 | std::string dummyString; |
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65 | return isPolyRet( function, dummyString, otherTyVars ); |
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66 | } |
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67 | |
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68 | bool isPolyVal( Type *type, const TyVarMap &tyVars ) { |
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69 | if ( TypeInstType *typeInst = dynamic_cast< TypeInstType * >( type ) ) { |
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70 | if ( tyVars.find( typeInst->get_name() ) != tyVars.end() ) { |
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71 | return true; |
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72 | } // if |
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73 | } // if |
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74 | return false; |
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75 | } |
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76 | |
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77 | bool isPolyObj( Type *type, const TyVarMap &tyVars ) { |
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78 | if ( isPolyVal( type, tyVars ) ) { |
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79 | return true; |
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80 | } else if ( PointerType *pt = dynamic_cast<PointerType*>( type ) ) { |
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81 | return isPolyObj( pt->get_base(), tyVars ); |
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82 | } else { |
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83 | return false; |
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84 | } |
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85 | } |
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86 | |
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87 | void printTyVarMap( std::ostream &os, const TyVarMap &tyVarMap ) { |
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88 | for ( TyVarMap::const_iterator i = tyVarMap.begin(); i != tyVarMap.end(); ++i ) { |
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89 | os << i->first << " (" << i->second << ") "; |
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90 | } // for |
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91 | os << std::endl; |
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92 | } |
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93 | } // namespace GenPoly |
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94 | |
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95 | // Local Variables: // |
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96 | // tab-width: 4 // |
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97 | // mode: c++ // |
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98 | // compile-command: "make install" // |
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99 | // End: // |
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