mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
057254dbc1
Introduced SyntaxArena for managing memory and cache. SyntaxArena holds BumpPtrAllocator as a allocation storage. RawSyntax is now able to be constructed with normal heap allocation, or by SyntaxArena. RawSyntax has ManualMemory flag which indicates it's managed by SyntaxArena. If the flag is true, its Retain()/Release() is no-op thus it's never destructed by IntrusiveRefCntPtr. This speedups the memory allocation for RawSyntax. Also, in Syntax parsing, "token" RawSyntax is reused if: a) It's not string literal with >16 length; and b) It doesn't contain random text trivia (e.g. comment). This reduces the overall allocation cost.
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
%{
|
|
# -*- mode: C++ -*-
|
|
from gyb_syntax_support import *
|
|
NODE_MAP = create_node_map()
|
|
# Ignore the following admonition; it applies to the resulting .h file only
|
|
}%
|
|
//// Automatically Generated From SyntaxBuilders.h.gyb.
|
|
//// Do Not Edit Directly!
|
|
//===------------- SyntaxBuilders.h - Syntax Node definitions -------------===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
|
|
// Licensed under Apache License v2.0 with Runtime Library Exception
|
|
//
|
|
// See https://swift.org/LICENSE.txt for license information
|
|
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SWIFT_SYNTAX_BUILDERS_H
|
|
#define SWIFT_SYNTAX_BUILDERS_H
|
|
|
|
#include "swift/Syntax/RawSyntax.h"
|
|
#include "swift/Syntax/SyntaxNodes.h"
|
|
|
|
namespace swift {
|
|
namespace syntax {
|
|
|
|
class SyntaxArena;
|
|
|
|
% for node in SYNTAX_NODES:
|
|
% if node.is_buildable():
|
|
% child_count = len(node.children)
|
|
class ${node.name}Builder {
|
|
SyntaxArena *Arena = nullptr;
|
|
RC<RawSyntax> Layout[${child_count}] = {
|
|
% for child in node.children:
|
|
nullptr,
|
|
% end
|
|
};
|
|
|
|
public:
|
|
${node.name}Builder() = default;
|
|
${node.name}Builder(SyntaxArena &Arena) : Arena(&Arena) {}
|
|
|
|
% for child in node.children:
|
|
${node.name}Builder &use${child.name}(${child.type_name} ${child.name});
|
|
% child_node = NODE_MAP.get(child.syntax_kind)
|
|
% if child_node and child_node.is_syntax_collection():
|
|
% child_elt = child_node.collection_element_name
|
|
% child_elt_type = child_node.collection_element_type
|
|
${node.name}Builder &add${child_elt}(${child_elt_type} ${child_elt});
|
|
% end
|
|
% end
|
|
|
|
${node.name} build();
|
|
};
|
|
|
|
% end
|
|
% end
|
|
|
|
}
|
|
}
|
|
|
|
#endif // SWIFT_SYNTAX_BUILDERS_H
|