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// Conversions as specified by JLS.
// Copyright (C) 2004, 2005 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
// gcjx is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// gcjx is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with gcjx; see the file COPYING.LIB. If
// not, write to the Free Software Foundation, Inc.,
// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#ifndef GCJX_CONVERSIONS_HH
#define GCJX_CONVERSIONS_HH
class model_expression;
class model_type;
model_type *binary_numeric_promotion (model_type *lhs_type,
model_type *rhs_type);
/// This handles binary numeric promotion. It returns the promoted
/// type, and it replaces the expressions with casts if required.
model_type *binary_numeric_promotion (ref_expression &lhs,
ref_expression &rhs);
model_type *unary_numeric_promotion (model_type *op_type);
/// This handles unary numeric promotion. It returns the promoted
/// type, and it replaces the expression with a cast if required.
model_type *unary_numeric_promotion (ref_expression &);
model_type *narrowing_primitive_conversion (model_type *to, model_type *from);
model_type *widening_primitive_conversion (model_type *to, model_type *from);
bool widening_reference_conversion (model_type *to, model_type *from);
model_type *widening_conversion (model_type *to, model_type *from);
model_type *assignment_conversion (model_type *lhs_type,
model_expression *rhs);
model_type *assignment_conversion (model_type *lhs, model_type *rhs);
model_type *assignment_conversion (model_type *lhs, ref_expression &rhs);
model_type *method_invocation_conversion (model_type *formal,
model_type *actual,
method_phase phase);
/// Note in this case we do not need a phase argument.
/// FIXME: document why...
void method_invocation_conversion (model_type *formal,
ref_expression &actual);
/// This implements capture conversion as defined in the JLS.
/// Essentially it replaces wildcards in a parameterization with new
/// type variables. The first argument is a request argument; it is
/// used for its location only.
model_class_instance *capture_conversion (model_element *,
model_class_instance *);
/// Return the wrapper type for a given primitive type. This also
/// works for `void'. Only primitive types and void can be passed as
/// arguments.
model_class *box_primitive_type (model_type *in);
/// Apply boxing conversion to the argument type. Returns null if
/// boxing conversion is not applicable.
model_type *boxing_conversion (model_type *in);
model_type *unboxing_conversion (model_type *in);
/// Return true if the type is convertible to 'boolean'.
bool boolean_conversion (model_type *in);
/// Return true if the type of the expression is convertible to
/// 'boolean'. If the expression is of type java.lang.Boolean, it is
/// wrapped in an explicit cast.
bool boolean_conversion (ref_expression &expr);
bool casting_conversion (model_type *to, model_type *from);
bool constant_type_p (model_type *t);
/// Return true if the value of the expression is representable in the
/// given type. This only works when both arguments are integral
/// types excluding 'long'.
bool representable_p (model_type *, model_expression *);
/// If the expression's type is not identical to the destination type,
/// wrap the expression in a cast to the destination type.
void maybe_cast_wrap (model_type *dest, ref_expression &expr);
/// Return true if the type is convertible to a numeric type.
bool convertible_to_numeric_p (model_type *);
/// Return true if the expression is commensurate with the type. This
/// is used for checking whether annotation values are valid.
bool annotation_commensurate_p (model_type *, model_expression *);
#endif // GCJX_CONVERSIONS_HH
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