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// Copyright (C) 2020 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_STMT
#define RUST_COMPILE_STMT
#include "rust-compile-base.h"
#include "rust-compile-tyty.h"
#include "rust-compile-expr.h"
namespace Rust {
namespace Compile {
class CompileStmt : public HIRCompileBase
{
public:
static void Compile (HIR::Stmt *stmt, Context *ctx)
{
CompileStmt compiler (ctx);
stmt->accept_vis (compiler);
rust_assert (compiler.ok);
}
virtual ~CompileStmt () {}
void visit (HIR::ExprStmtWithBlock &stmt)
{
ok = true;
auto translated = CompileExpr::Compile (stmt.get_expr (), ctx);
// these can be null
if (translated == nullptr)
return;
gcc_unreachable ();
}
void visit (HIR::ExprStmtWithoutBlock &stmt)
{
ok = true;
auto translated = CompileExpr::Compile (stmt.get_expr (), ctx);
// these can be null
if (translated == nullptr)
return;
gcc_unreachable ();
}
void visit (HIR::LetStmt &stmt)
{
// marks that the statement has been looked at
ok = true;
// nothing to do
if (!stmt.has_init_expr ())
return;
TyTy::TyBase *ty = nullptr;
if (!ctx->get_tyctx ()->lookup_type (stmt.get_mappings ().get_hirid (),
&ty))
{
rust_fatal_error (stmt.get_locus (), "failed to lookup var decl type");
return;
}
// there is an ICE in GCC for void_node
if (ty->get_kind () == TyTy::TypeKind::UNIT)
return;
Bvariable *var = nullptr;
if (!ctx->lookup_var_decl (stmt.get_mappings ().get_hirid (), &var))
{
rust_fatal_error (stmt.get_locus (),
"failed to lookup compiled variable decl");
return;
}
Bexpression *init = CompileExpr::Compile (stmt.get_init_expr (), ctx);
auto fnctx = ctx->peek_fn ();
auto s = ctx->get_backend ()->init_statement (fnctx.fndecl, var, init);
ctx->add_statement (s);
}
private:
CompileStmt (Context *ctx) : HIRCompileBase (ctx), ok (false) {}
bool ok;
};
} // namespace Compile
} // namespace Rust
#endif // RUST_COMPILE_STMT
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