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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