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// Copyright (C) 2020-2025 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/>.
#include "rust-compile-fnparam.h"
#include "rust-compile-pattern.h"
#include "gimple-expr.h"
namespace Rust {
namespace Compile {
CompileFnParam::CompileFnParam (Context *ctx, tree fndecl, tree decl_type,
location_t locus)
: HIRCompileBase (ctx), fndecl (fndecl), decl_type (decl_type), locus (locus),
compiled_param (Bvariable::error_variable ())
{}
Bvariable *
CompileFnParam::compile (Context *ctx, tree fndecl, HIR::FunctionParam ¶m,
tree decl_type, location_t locus)
{
CompileFnParam compiler (ctx, fndecl, decl_type, locus);
param.get_param_name ().accept_vis (compiler);
return compiler.compiled_param;
}
Bvariable *
CompileFnParam::compile (Context *ctx, tree fndecl, HIR::Pattern ¶m,
tree decl_type, location_t locus)
{
CompileFnParam compiler (ctx, fndecl, decl_type, locus);
param.accept_vis (compiler);
return compiler.compiled_param;
}
void
CompileFnParam::visit (HIR::IdentifierPattern &pattern)
{
if (!pattern.is_mut ())
decl_type = Backend::immutable_type (decl_type);
compiled_param
= Backend::parameter_variable (fndecl,
pattern.get_identifier ().as_string (),
decl_type, locus);
}
void
CompileFnParam::visit (HIR::WildcardPattern &pattern)
{
decl_type = Backend::immutable_type (decl_type);
compiled_param = Backend::parameter_variable (fndecl, "_", decl_type, locus);
}
void
CompileFnParam::visit (HIR::TuplePattern &pattern)
{
compiled_param = create_tmp_param_var (decl_type);
CompilePatternBindings::Compile (
pattern, Backend::var_expression (compiled_param, locus), ctx);
}
void
CompileFnParam::visit (HIR::StructPattern &pattern)
{
compiled_param = create_tmp_param_var (decl_type);
CompilePatternBindings::Compile (
pattern, Backend::var_expression (compiled_param, locus), ctx);
}
void
CompileFnParam::visit (HIR::TupleStructPattern &pattern)
{
compiled_param = create_tmp_param_var (decl_type);
CompilePatternBindings::Compile (
pattern, Backend::var_expression (compiled_param, locus), ctx);
}
void
CompileFnParam::visit (HIR::ReferencePattern &pattern)
{
compiled_param = create_tmp_param_var (decl_type);
CompilePatternBindings::Compile (
pattern, Backend::var_expression (compiled_param, locus), ctx);
}
Bvariable *
CompileSelfParam::compile (Context *ctx, tree fndecl, HIR::SelfParam &self,
tree decl_type, location_t 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 = Backend::immutable_type (decl_type);
return Backend::parameter_variable (fndecl, "self", decl_type, locus);
}
Bvariable *
CompileFnParam::create_tmp_param_var (tree decl_type)
{
// generate the anon param
tree tmp_ident = create_tmp_var_name ("RSTPRM");
std::string cpp_str_identifier = std::string (IDENTIFIER_POINTER (tmp_ident));
decl_type = Backend::immutable_type (decl_type);
return Backend::parameter_variable (fndecl, cpp_str_identifier, decl_type,
locus);
}
} // namespace Compile
} // namespace Rust
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