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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"
namespace Rust {
namespace Compile {
class CompileFnParam : public HIRCompileBase, public HIR::HIRPatternVisitor
{
public:
static Bvariable *compile (Context *ctx, tree fndecl,
HIR::FunctionParam *param, tree decl_type,
Location locus)
{
CompileFnParam compiler (ctx, fndecl, decl_type, locus);
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);
compiled_param
= ctx->get_backend ()->parameter_variable (fndecl,
pattern.get_identifier (),
decl_type, locus);
}
void visit (HIR::WildcardPattern &pattern) override
{
decl_type = ctx->get_backend ()->immutable_type (decl_type);
compiled_param
= ctx->get_backend ()->parameter_variable (fndecl, "_", decl_type, locus);
}
// Empty visit for unused Pattern HIR nodes.
void visit (HIR::GroupedPattern &) override {}
void visit (HIR::LiteralPattern &) override {}
void visit (HIR::PathInExpression &) override {}
void visit (HIR::QualifiedPathInExpression &) override {}
void visit (HIR::RangePattern &) override {}
void visit (HIR::ReferencePattern &) override {}
void visit (HIR::SlicePattern &) override {}
void visit (HIR::StructPattern &) override {}
void visit (HIR::TuplePattern &) override {}
void visit (HIR::TupleStructPattern &) override {}
private:
CompileFnParam (Context *ctx, tree fndecl, tree decl_type, Location locus)
: HIRCompileBase (ctx), fndecl (fndecl), decl_type (decl_type),
locus (locus), compiled_param (ctx->get_backend ()->error_variable ())
{}
tree fndecl;
tree decl_type;
Location locus;
Bvariable *compiled_param;
};
class CompileSelfParam : public HIRCompileBase, public HIR::HIRStmtVisitor
{
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);
return ctx->get_backend ()->parameter_variable (fndecl, "self", decl_type,
locus);
}
};
} // namespace Compile
} // namespace Rust
#endif // RUST_COMPILE_FNPARAM
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