source: src/AST/Type.cpp @ 63be3387

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Type.cpp --
//
// Author           : Aaron B. Moss
// Created On       : Mon May 13 15:00:00 2019
// Last Modified By : Andrew Beach
// Last Modified On : Thu Jul 23 14:16:00 2020
// Update Count     : 5
//

#include "Type.hpp"

#include <cassert>
#include <utility>               // for move
#include <vector>

#include "Decl.hpp"
#include "Init.hpp"
#include "Inspect.hpp"
#include "Common/utility.h"      // for copy, move
#include "Tuples/Tuples.h"       // for isTtype

namespace ast {

const Type * Type::getComponent( unsigned i ) const {
        assertf( size() == 1 && i == 0, "Type::getComponent was called with size %d and index %d\n", size(), i );
        return this;
}

const Type * Type::stripDeclarator() const {
        const Type * t;
        const Type * a;
        for ( t = this; (a = ast::getPointerBase( t )); t = a );
        return t;
}

const Type * Type::stripReferences() const {
        const Type * t;
        const ReferenceType * r;
        for ( t = this; (r = dynamic_cast<const ReferenceType *>(t) ); t = r->base );
        return t;
}

// --- BasicType

// GENERATED START, DO NOT EDIT
// GENERATED BY BasicTypes-gen.cc
const char * BasicType::typeNames[] = {
        "_Bool",
        "char",
        "signed char",
        "unsigned char",
        "signed short int",
        "unsigned short int",
        "signed int",
        "unsigned int",
        "signed long int",
        "unsigned long int",
        "signed long long int",
        "unsigned long long int",
        "__int128",
        "unsigned __int128",
        "_Float16",
        "_Float16 _Complex",
        "_Float32",
        "_Float32 _Complex",
        "float",
        "float _Complex",
        "_Float32x",
        "_Float32x _Complex",
        "_Float64",
        "_Float64 _Complex",
        "double",
        "double _Complex",
        "_Float64x",
        "_Float64x _Complex",
        "__float80",
        "_Float128",
        "_Float128 _Complex",
        "__float128",
        "long double",
        "long double _Complex",
        "_Float128x",
        "_Float128x _Complex",
};
// GENERATED END

// --- FunctionType
namespace {
        bool containsTtype( const std::vector<ptr<Type>> & l ) {
                if ( ! l.empty() ) {
                        return Tuples::isTtype( l.back() );
                }
                return false;
        }
}

bool FunctionType::isTtype() const {
        return containsTtype( returns ) || containsTtype( params );
}

// --- BaseInstType

std::vector<readonly<Decl>> BaseInstType::lookup( const std::string& name ) const {
        assertf( aggr(), "Must have aggregate to perform lookup" );

        std::vector<readonly<Decl>> found;
        for ( const Decl * decl : aggr()->members ) {
                if ( decl->name == name ) { found.emplace_back( decl ); }
        }
        return found;
}

// --- SueInstType (StructInstType, UnionInstType, EnumInstType)

template<typename decl_t>
SueInstType<decl_t>::SueInstType(
        const base_type * b, CV::Qualifiers q, std::vector<ptr<Attribute>>&& as )
: BaseInstType( b->name, q, std::move(as) ), base( b ) {}

template<typename decl_t>
SueInstType<decl_t>::SueInstType(
        const base_type * b, std::vector<ptr<Expr>> && params,
        CV::Qualifiers q, std::vector<ptr<Attribute>> && as )
: BaseInstType( b->name, std::move(params), q, std::move(as) ), base( b ) {}

template<typename decl_t>
bool SueInstType<decl_t>::isComplete() const {
        return base ? base->body : false;
}

template class SueInstType<StructDecl>;
template class SueInstType<UnionDecl>;
template class SueInstType<EnumDecl>;

// --- TraitInstType

TraitInstType::TraitInstType(
        const TraitDecl * b, CV::Qualifiers q, std::vector<ptr<Attribute>>&& as )
: BaseInstType( b->name, q, std::move(as) ), base( b ) {}

// --- TypeInstType

bool TypeInstType::operator==( const TypeInstType & other ) const {
        return base == other.base
                && formal_usage == other.formal_usage
                && expr_id == other.expr_id;
}

TypeInstType::TypeInstType( const TypeDecl * b,
        CV::Qualifiers q, std::vector<ptr<Attribute>> && as )
: BaseInstType( b->name, q, std::move(as) ), base( b ), kind( b->kind ) {}

void TypeInstType::set_base( const TypeDecl * b ) {
        base = b;
        kind = b->kind;
}

bool TypeInstType::isComplete() const { return base->sized; }

std::string TypeInstType::TypeEnvKey::typeString() const {
        return std::string("_") + std::to_string(formal_usage)
                + "_" + std::to_string(expr_id) + "_" + base->name;
}

bool TypeInstType::TypeEnvKey::operator==(
                const TypeInstType::TypeEnvKey & other ) const {
        return base == other.base
                && formal_usage == other.formal_usage
                && expr_id == other.expr_id;
}

bool TypeInstType::TypeEnvKey::operator<(
                const TypeInstType::TypeEnvKey & other ) const {
        // TypeEnvKey ordering is an arbitrary total ordering.
        // It doesn't mean anything but allows for a sorting.
        if ( base < other.base ) {
                return true;
        } else if ( other.base < base ) {
                return false;
        } else if ( formal_usage < other.formal_usage ) {
                return true;
        } else if ( other.formal_usage < formal_usage ) {
                return false;
        } else {
                return expr_id < other.expr_id;
        }
}

// --- TupleType

TupleType::TupleType( std::vector<ptr<Type>> && ts, CV::Qualifiers q )
: Type( q ), types( std::move(ts) ), members() {
        // This constructor is awkward. `TupleType` needs to contain objects so that members can be
        // named, but members without initializer nodes end up getting constructors, which breaks
        // things. This happens because the object decls have to be visited so that their types are
        // kept in sync with the types listed here. Ultimately, the types listed here should perhaps
        // be eliminated and replaced with a list-view over members. The temporary solution is to
        // make a `ListInit` with `maybeConstructed = false`, so when the object is visited it is not
        // constructed. Potential better solutions include:
        //   a) Separate `TupleType` from its declarations, into `TupleDecl` and `Tuple{Inst?}Type`,
        //      similar to the aggregate types.
        //   b) Separate initializer nodes better, e.g. add a `MaybeConstructed` node that is replaced
        //      by `genInit`, rather than the current boolean flag.
        members.reserve( types.size() );
        for ( const Type * ty : types ) {
                members.emplace_back( new ObjectDecl{
                        CodeLocation(), "", ty, new ListInit( CodeLocation(), {}, {}, NoConstruct ),
                        Storage::Classes{}, Linkage::Cforall } );
        }
}

bool isUnboundType(const Type * type) {
        if (auto typeInst = dynamic_cast<const TypeInstType *>(type)) {
                // xxx - look for a type name produced by renameTyVars.

                // TODO: once TypeInstType representation is updated, it should properly check
                // if the context id is filled. this is a temporary hack for now
                return typeInst->formal_usage > 0;
        }
        return false;
}

}

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// mode: c++ //
// compile-command: "make install" //
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