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lang-item: Remove unused NodeId from LangItemPath
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gcc/rust/ChangeLog:

	* ast/rust-path.h: Adapt children of Path to fix some NodeId issues.
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@CohenArthur
CohenArthur committed Dec 5, 2024
1 parent c5bfe9f commit 651cc09
Showing 1 changed file with 37 additions and 39 deletions.
76 changes: 37 additions & 39 deletions gcc/rust/ast/rust-path.h
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Original file line number Diff line number Diff line change
Expand Up @@ -599,9 +599,6 @@ class Path : public Pattern
return Pattern::Kind::Path;
}

location_t get_locus () const override { return locus; }
NodeId get_node_id () const override { return node_id; }

std::unique_ptr<Path> clone_path ()
{
return std::unique_ptr<Path> (clone_path_impl ());
Expand All @@ -613,22 +610,19 @@ class Path : public Pattern
}

protected:
location_t locus;
NodeId node_id;

Path (location_t locus, NodeId node_id) : locus (locus), node_id (node_id) {}

virtual Path *clone_path_impl () const = 0;
};

class RegularPath : public Path
{
std::vector<PathExprSegment> segments;
NodeId node_id;
location_t locus;

public:
explicit RegularPath (std::vector<PathExprSegment> &&segments,
location_t locus, NodeId node_id)
: Path (locus, node_id), segments (std::move (segments))
: segments (std::move (segments)), node_id (node_id), locus (locus)
{}

std::string as_string () const override;
Expand Down Expand Up @@ -657,17 +651,25 @@ class RegularPath : public Path
return new RegularPath (std::vector<PathExprSegment> (segments), locus,
node_id);
}

NodeId get_node_id () const override { return node_id; }
location_t get_locus () const override { return locus; }
};

class LangItemPath : public Path
{
NodeId lang_item;

LangItem::Kind kind;
NodeId node_id;
location_t locus;

LangItemPath (LangItem::Kind kind, NodeId node_id, location_t locus)
: kind (kind), node_id (node_id), locus (locus)
{}

public:
explicit LangItemPath (LangItem::Kind kind, location_t locus)
: Path (locus, Analysis::Mappings::get ().get_next_node_id ()), kind (kind)
: kind (kind), node_id (Analysis::Mappings::get ().get_next_node_id ()),
locus (locus)
{}

Path::Kind get_path_kind () const override { return Path::Kind::LangItem; }
Expand All @@ -676,12 +678,15 @@ class LangItemPath : public Path

Path *clone_path_impl () const override
{
return new LangItemPath (kind, locus);
return new LangItemPath (kind, node_id, locus);
}

std::string as_string () const override;

LangItem::Kind get_lang_item_kind () { return kind; }

NodeId get_node_id () const override { return node_id; }
location_t get_locus () const override { return locus; }
};

/* AST node representing a path-in-expression pattern (path that allows
Expand Down Expand Up @@ -739,11 +744,10 @@ class PathInExpression : public Pattern, public ExprWithoutBlock
// Returns whether path in expression is in an error state.
bool is_error () const
{
// FIXME: Cleanup
if (path->get_path_kind () == Path::Kind::Regular)
return !static_cast<RegularPath &> (*path).has_segments ();

return false;
rust_unreachable ();
}

/* Converts PathInExpression to SimplePath if possible (i.e. no generic
Expand Down Expand Up @@ -822,7 +826,7 @@ class PathInExpression : public Pattern, public ExprWithoutBlock
if (path->get_path_kind () == Path::Kind::Regular)
return static_cast<RegularPath &> (*path).get_segments ().size () == 1;

return false;
rust_unreachable ();
}

Pattern::Kind get_pattern_kind () override { return Pattern::Kind::Path; }
Expand Down Expand Up @@ -1201,17 +1205,13 @@ class TypePathSegmentFunction : public TypePathSegment
}
};

// Path used inside types
class TypePath : public TypeNoBounds, public Path
{
bool has_opening_scope_resolution;
std::vector<std::unique_ptr<TypePathSegment> > segments;
location_t locus;

protected:
Kind get_path_kind () const override { return Kind::Type; }

Path *clone_path_impl () const override { return new TypePath (*this); }

/* Use covariance to implement clone function as returning this object
* rather than base */
TypePath *clone_type_no_bounds_impl () const override
Expand All @@ -1234,23 +1234,23 @@ class TypePath : public TypeNoBounds, public Path
static TypePath create_error ()
{
return TypePath (std::vector<std::unique_ptr<TypePathSegment> > (),
UNKNOWN_LOCATION);
UNDEF_LOCATION);
}

// Constructor
TypePath (std::vector<std::unique_ptr<TypePathSegment> > segments,
location_t locus, bool has_opening_scope_resolution = false)
: TypeNoBounds (),
Path (locus, Analysis::Mappings::get ().get_next_node_id ()),
has_opening_scope_resolution (has_opening_scope_resolution),
segments (std::move (segments))
segments (std::move (segments)), locus (locus)
{}

// Copy constructor with vector clone
TypePath (TypePath const &other)
: Path (other.locus, other.Path::get_node_id ()),
has_opening_scope_resolution (other.has_opening_scope_resolution)
: has_opening_scope_resolution (other.has_opening_scope_resolution),
locus (other.locus)
{
node_id = other.node_id;
segments.reserve (other.segments.size ());
for (const auto &e : other.segments)
segments.push_back (e->clone_type_path_segment ());
Expand All @@ -1259,7 +1259,9 @@ class TypePath : public TypeNoBounds, public Path
// Overloaded assignment operator with clone
TypePath &operator= (TypePath const &other)
{
node_id = other.node_id;
has_opening_scope_resolution = other.has_opening_scope_resolution;
locus = other.locus;

segments.reserve (other.segments.size ());
for (const auto &e : other.segments)
Expand All @@ -1281,6 +1283,12 @@ class TypePath : public TypeNoBounds, public Path
// Creates a trait bound with a clone of this type path as its only element.
TraitBound *to_trait_bound (bool in_parens) const override;

location_t get_locus () const override final { return locus; }
NodeId get_node_id () const override final { return node_id; }

void mark_for_strip () override {}
bool is_marked_for_strip () const override { return false; }

void accept_vis (ASTVisitor &vis) override;

// TODO: this seems kinda dodgy
Expand All @@ -1294,20 +1302,10 @@ class TypePath : public TypeNoBounds, public Path
}

size_t get_num_segments () const { return segments.size (); }
location_t get_locus () const override { return Path::get_locus (); }

// TypePath is both a Type and a Path, which is really annoying for a few
// methods. We need to override them and manually call either of them, which
// sucks. Oh well.

void mark_for_strip () override { TypeNoBounds::mark_for_strip (); }
Path::Kind get_path_kind () const override { return Path::Kind::Type; }

bool is_marked_for_strip () const override
{
return TypeNoBounds::is_marked_for_strip ();
}

NodeId get_node_id () const override { return TypeNoBounds::get_node_id (); }
Path *clone_path_impl () const override { return new TypePath (*this); }
};

struct QualifiedPathType
Expand Down Expand Up @@ -1496,7 +1494,7 @@ class QualifiedPathInExpression : public Pattern, public ExprWithoutBlock
if (path->get_path_kind () == Path::Kind::Regular)
return static_cast<RegularPath &> (*path).get_segments ().size () == 1;

return false;
rust_unreachable ();
}

protected:
Expand Down

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