[298fe57] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2018 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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[11df881] | 7 | // FixQualifiedTypes.cpp -- Replace the qualified type with a direct type. |
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[298fe57] | 8 | // |
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| 9 | // Author : Andrew Beach |
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| 10 | // Created On : Thr Apr 21 11:13:00 2022 |
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| 11 | // Last Modified By : Andrew Beach |
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| 12 | // Last Modified On : Fri Apr 22 11:36:00 2022 |
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| 13 | // Update Count : 0 |
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| 14 | // |
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| 15 | |
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| 16 | #include "Validate/FixQualifiedTypes.hpp" |
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| 17 | |
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| 18 | #include "AST/Pass.hpp" |
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| 19 | #include "AST/TranslationUnit.hpp" |
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| 20 | #include "Validate/NoIdSymbolTable.hpp" |
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| 21 | |
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| 22 | namespace Validate { |
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| 23 | |
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| 24 | namespace { |
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| 25 | |
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| 26 | struct FixQualifiedTypesCore : |
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| 27 | public WithNoIdSymbolTable, public ast::WithGuards { |
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| 28 | CodeLocation const * location = nullptr; |
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| 29 | |
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| 30 | void previsit( ast::ParseNode const * node ) { |
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| 31 | GuardValue( location ) = &node->location; |
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| 32 | } |
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| 33 | |
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| 34 | ast::Type const * postvisit( ast::QualifiedType const * type ) { |
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| 35 | assert( location ); |
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| 36 | |
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| 37 | ast::ptr<ast::Type> const & parent = type->parent; |
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| 38 | ast::ptr<ast::Type> const & child = type->child; |
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| 39 | if ( parent.as<ast::GlobalScopeType>() ) { |
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| 40 | // .T => lookup T at global scope. |
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| 41 | if ( auto inst = child.as<ast::TypeInstType>() ) { |
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| 42 | auto td = symtab.globalLookupType( inst->name ); |
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| 43 | if ( !td ) { |
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| 44 | SemanticError( *location, toString("Use of undefined global type ", inst->name) ); |
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| 45 | } |
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| 46 | auto base = td->base; |
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| 47 | assert( base ); |
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| 48 | ast::Type * ret = ast::deepCopy( base ); |
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| 49 | ret->qualifiers = type->qualifiers; |
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| 50 | return ret; |
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| 51 | } else { |
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| 52 | // .T => T is not a type name. |
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| 53 | assertf( false, "unhandled global qualified child type: %s", toCString(child) ); |
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| 54 | } |
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| 55 | } else { |
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| 56 | // S.T => S must be an aggregate type, find the declaration for T in S. |
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| 57 | ast::AggregateDecl const * aggr = nullptr; |
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| 58 | ast::BaseInstType const * instp = nullptr; |
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| 59 | if ( auto inst = parent.as<ast::StructInstType>() ) { |
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| 60 | aggr = inst->base; |
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| 61 | instp = inst; |
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| 62 | } else if ( auto inst = parent.as<ast::UnionInstType>() ) { |
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| 63 | aggr = inst->base; |
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| 64 | instp = inst; |
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| 65 | } else { |
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| 66 | SemanticError( *location, toString("Qualified type requires an aggregate on the left, but has: ", parent) ); |
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| 67 | } |
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| 68 | // TODO: Need to handle forward declarations. |
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| 69 | assert( aggr ); |
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| 70 | for ( ast::ptr<ast::Decl> const & member : aggr->members ) { |
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| 71 | if ( auto inst = child.as<ast::TypeInstType>() ) { |
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| 72 | if ( auto decl = member.as<ast::NamedTypeDecl>() ) { |
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| 73 | if ( decl->name == inst->name ) { |
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| 74 | assert( decl->base ); |
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| 75 | ast::Type * ret = ast::deepCopy( decl->base ); |
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| 76 | ret->qualifiers = type->qualifiers; |
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| 77 | ast::TypeSubstitution sub( aggr->params, instp->params ); |
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| 78 | auto result = sub.apply(ret); |
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| 79 | return result.node.release(); |
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| 80 | } |
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| 81 | } |
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| 82 | } else { |
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| 83 | // S.T - S is not an aggregate => error. |
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| 84 | assertf( false, "unhandled qualified child type: %s", toCString(type) ); |
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| 85 | } |
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| 86 | } |
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| 87 | // failed to find a satisfying definition of type |
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| 88 | SemanticError( *location, toString("Undefined type in qualified type: ", type) ); |
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| 89 | } |
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| 90 | } |
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| 91 | }; |
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| 92 | |
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| 93 | } // namespace |
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| 94 | |
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| 95 | void fixQualifiedTypes( ast::TranslationUnit & translationUnit ) { |
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| 96 | ast::Pass<FixQualifiedTypesCore>::run( translationUnit ); |
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| 97 | } |
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| 98 | |
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| 99 | } // namespace Validate |
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| 100 | |
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| 101 | // Local Variables: // |
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| 102 | // tab-width: 4 // |
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| 103 | // mode: c++ // |
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| 104 | // compile-command: "make install" // |
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| 105 | // End: // |
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