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// Copyright (C) 2020-2023 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-ast-resolve-pattern.h"
#include "rust-ast-resolve-path.h"
#include "rust-ast-resolve-expr.h"
namespace Rust {
namespace Resolver {
void
PatternDeclaration::visit (AST::PathInExpression &pattern)
{
ResolvePath::go (&pattern);
}
void
PatternDeclaration::visit (AST::TupleStructPattern &pattern)
{
ResolvePath::go (&pattern.get_path ());
std::unique_ptr<AST::TupleStructItems> &items = pattern.get_items ();
switch (items->get_item_type ())
{
case AST::TupleStructItems::RANGE: {
// TODO
gcc_unreachable ();
}
break;
case AST::TupleStructItems::NO_RANGE: {
AST::TupleStructItemsNoRange &items_no_range
= static_cast<AST::TupleStructItemsNoRange &> (*items.get ());
for (auto &inner_pattern : items_no_range.get_patterns ())
{
PatternDeclaration::go (inner_pattern.get (), type);
}
}
break;
}
}
void
PatternDeclaration::visit (AST::StructPattern &pattern)
{
ResolvePath::go (&pattern.get_path ());
auto &struct_pattern_elems = pattern.get_struct_pattern_elems ();
for (auto &field : struct_pattern_elems.get_struct_pattern_fields ())
{
switch (field->get_item_type ())
{
case AST::StructPatternField::ItemType::TUPLE_PAT: {
// TODO
gcc_unreachable ();
}
break;
case AST::StructPatternField::ItemType::IDENT_PAT: {
// TODO
gcc_unreachable ();
}
break;
case AST::StructPatternField::ItemType::IDENT: {
AST::StructPatternFieldIdent &ident
= static_cast<AST::StructPatternFieldIdent &> (*field.get ());
resolver->get_name_scope ().insert (
CanonicalPath::new_seg (ident.get_node_id (),
ident.get_identifier ()),
ident.get_node_id (), ident.get_locus ());
}
break;
}
}
// TODO
rust_assert (!struct_pattern_elems.has_etc ());
}
void
PatternDeclaration::visit (AST::TuplePattern &pattern)
{
std::unique_ptr<AST::TuplePatternItems> &items = pattern.get_items ();
switch (items->get_pattern_type ())
{
case AST::TuplePatternItems::TuplePatternItemType::MULTIPLE: {
AST::TuplePatternItemsMultiple &ref
= *static_cast<AST::TuplePatternItemsMultiple *> (
pattern.get_items ().get ());
for (auto &p : ref.get_patterns ())
p->accept_vis (*this);
}
break;
case AST::TuplePatternItems::TuplePatternItemType::RANGED: {
AST::TuplePatternItemsRanged &ref
= *static_cast<AST::TuplePatternItemsRanged *> (
pattern.get_items ().get ());
for (auto &p : ref.get_lower_patterns ())
p->accept_vis (*this);
for (auto &p : ref.get_upper_patterns ())
p->accept_vis (*this);
}
break;
}
}
static void
resolve_range_pattern_bound (AST::RangePatternBound *bound)
{
switch (bound->get_bound_type ())
{
case AST::RangePatternBound::RangePatternBoundType::LITERAL:
// Nothing to resolve for a literal.
break;
case AST::RangePatternBound::RangePatternBoundType::PATH: {
AST::RangePatternBoundPath &ref
= *static_cast<AST::RangePatternBoundPath *> (bound);
ResolvePath::go (&ref.get_path ());
}
break;
case AST::RangePatternBound::RangePatternBoundType::QUALPATH: {
AST::RangePatternBoundQualPath &ref
= *static_cast<AST::RangePatternBoundQualPath *> (bound);
ResolvePath::go (&ref.get_qualified_path ());
}
break;
}
}
void
PatternDeclaration::visit (AST::RangePattern &pattern)
{
resolve_range_pattern_bound (pattern.get_upper_bound ().get ());
resolve_range_pattern_bound (pattern.get_lower_bound ().get ());
}
} // namespace Resolver
} // namespace Rust
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