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 | // AdjustExprType.cpp --
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8 | //
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9 | // Author : Richard C. Bilson
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10 | // Created On : Sat May 16 23:41:42 2015
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11 | // Last Modified By : Peter A. Buhr
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12 | // Last Modified On : Wed Dec 11 21:43:56 2019
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13 | // Update Count : 6
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14 | //
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15 |
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16 | #include "AST/Node.hpp"
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17 | #include "AST/Pass.hpp"
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18 | #include "AST/SymbolTable.hpp"
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19 | #include "AST/Type.hpp"
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20 | #include "AST/TypeEnvironment.hpp"
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21 |
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22 | namespace ResolvExpr {
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23 |
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24 | namespace {
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25 |
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26 | class AdjustExprType final : public ast::WithShortCircuiting {
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27 | const ast::SymbolTable & symtab;
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28 | public:
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29 | const ast::TypeEnvironment & tenv;
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30 |
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31 | AdjustExprType( const ast::TypeEnvironment & e, const ast::SymbolTable & syms )
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32 | : symtab( syms ), tenv( e ) {}
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33 |
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34 | void previsit( const ast::VoidType * ) { visit_children = false; }
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35 | void previsit( const ast::BasicType * ) { visit_children = false; }
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36 | void previsit( const ast::PointerType * ) { visit_children = false; }
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37 | void previsit( const ast::ArrayType * ) { visit_children = false; }
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38 | void previsit( const ast::FunctionType * ) { visit_children = false; }
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39 | void previsit( const ast::StructInstType * ) { visit_children = false; }
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40 | void previsit( const ast::UnionInstType * ) { visit_children = false; }
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41 | void previsit( const ast::EnumInstType * ) { visit_children = false; }
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42 | void previsit( const ast::TraitInstType * ) { visit_children = false; }
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43 | void previsit( const ast::TypeInstType * ) { visit_children = false; }
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44 | void previsit( const ast::TupleType * ) { visit_children = false; }
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45 | void previsit( const ast::VarArgsType * ) { visit_children = false; }
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46 | void previsit( const ast::ZeroType * ) { visit_children = false; }
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47 | void previsit( const ast::OneType * ) { visit_children = false; }
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48 |
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49 | const ast::Type * postvisit( const ast::ArrayType * at ) {
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50 | return new ast::PointerType( at->base, at->qualifiers );
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51 | }
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52 |
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53 | const ast::Type * postvisit( const ast::FunctionType * ft ) {
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54 | return new ast::PointerType( ft );
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55 | }
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56 |
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57 | const ast::Type * postvisit( const ast::TypeInstType * inst ) {
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58 | // replace known function-type-variables with pointer-to-function
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59 | if ( const ast::EqvClass * eqvClass = tenv.lookup( *inst ) ) {
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60 | if ( eqvClass->data.kind == ast::TypeDecl::Ftype ) {
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61 | return new ast::PointerType( inst );
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62 | }
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63 | } else if ( const ast::NamedTypeDecl * ntDecl = symtab.lookupType( inst->name ) ) {
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64 | if ( auto tyDecl = dynamic_cast< const ast::TypeDecl * >( ntDecl ) ) {
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65 | if ( tyDecl->kind == ast::TypeDecl::Ftype ) {
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66 | return new ast::PointerType( inst );
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67 | }
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68 | }
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69 | }
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70 | return inst;
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71 | }
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72 | };
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73 |
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74 | } // anonymous namespace
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75 |
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76 | const ast::Type * adjustExprType(
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77 | const ast::Type * type, const ast::TypeEnvironment & env, const ast::SymbolTable & symtab
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78 | ) {
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79 | ast::Pass<AdjustExprType> adjuster{ env, symtab };
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80 | return type->accept( adjuster );
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81 | }
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82 |
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83 | } // namespace ResolvExpr
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84 |
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85 | // Local Variables: //
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86 | // tab-width: 4 //
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87 | // mode: c++ //
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88 | // compile-command: "make install" //
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89 | // End: //
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