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// Copyright (C) 2020-2022 Free Software Foundation, Inc.
// This file is part of GCC.
// GCC is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3, or (at your option) any later
// version.
// GCC 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 General Public License
// for more details.
// You should have received a copy of the GNU General Public License
// along with GCC; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#ifndef RUST_COMPILE_FNPARAM
#define RUST_COMPILE_FNPARAM
#include "rust-compile-base.h"
#include "rust-hir-address-taken.h"
namespace Rust {
namespace Compile {
class CompileFnParam : public HIRCompileBase
{
using Rust::Compile::HIRCompileBase::visit;
public:
static Bvariable *compile (Context *ctx, tree fndecl,
HIR::FunctionParam *param, tree decl_type,
Location locus)
{
CompileFnParam compiler (ctx, fndecl, decl_type, locus, *param);
param->get_param_name ()->accept_vis (compiler);
return compiler.compiled_param;
}
void visit (HIR::IdentifierPattern &pattern) override
{
if (!pattern.is_mut ())
decl_type = ctx->get_backend ()->immutable_type (decl_type);
bool address_taken = false;
address_taken_context->lookup_addess_taken (
param.get_mappings ().get_hirid (), &address_taken);
compiled_param = ctx->get_backend ()->parameter_variable (
fndecl, pattern.get_identifier (), decl_type, address_taken, locus);
}
void visit (HIR::WildcardPattern &pattern) override
{
decl_type = ctx->get_backend ()->immutable_type (decl_type);
bool address_taken = false;
compiled_param
= ctx->get_backend ()->parameter_variable (fndecl, "_", decl_type,
address_taken, locus);
}
private:
CompileFnParam (Context *ctx, tree fndecl, tree decl_type, Location locus,
const HIR::FunctionParam ¶m)
: HIRCompileBase (ctx), fndecl (fndecl), decl_type (decl_type),
locus (locus), param (param),
compiled_param (ctx->get_backend ()->error_variable ()),
address_taken_context (Resolver::AddressTakenContext::get ())
{}
tree fndecl;
tree decl_type;
Location locus;
const HIR::FunctionParam ¶m;
Bvariable *compiled_param;
const Resolver::AddressTakenContext *address_taken_context;
};
class CompileSelfParam : public HIRCompileBase
{
public:
static Bvariable *compile (Context *ctx, tree fndecl, HIR::SelfParam &self,
tree decl_type, Location locus)
{
bool is_immutable
= self.get_self_kind () == HIR::SelfParam::ImplicitSelfKind::IMM
|| self.get_self_kind () == HIR::SelfParam::ImplicitSelfKind::IMM_REF;
if (is_immutable)
decl_type = ctx->get_backend ()->immutable_type (decl_type);
const auto &address_taken_context = Resolver::AddressTakenContext::get ();
bool address_taken = false;
address_taken_context->lookup_addess_taken (
self.get_mappings ().get_hirid (), &address_taken);
return ctx->get_backend ()->parameter_variable (fndecl, "self", decl_type,
address_taken, locus);
}
};
} // namespace Compile
} // namespace Rust
#endif // RUST_COMPILE_FNPARAM
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