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56a923475f
Instead of having a heap-allocated RefCountedBox to store a SyntaxData's parent, reference-count SyntaxData itself. This has a couple of advantages: - When passing SyntaxData around, only a pointer needs to be passed instead of the entire struct contents. This is faster. - We can later introduce a SyntaxDataRef, which behaves similar to SyntaxData, but delegates the responsibility that the parent stays alive to the user. While sacrificing guaranteed memory safety, this means that SyntaxData can then be stack-allocated without any ref-counting overhead.
137 lines
4.0 KiB
C++
137 lines
4.0 KiB
C++
%{
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# -*- mode: C++ -*-
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from gyb_syntax_support import *
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NODE_MAP = create_node_map()
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# Ignore the following admonition; it applies to the resulting .h file only
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}%
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//// Automatically Generated From SyntaxNodes.h.gyb.
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//// Do Not Edit Directly!
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//===---------------- SyntaxNodes.h - Syntax Node definitions -------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_SYNTAX_NODES_H
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#define SWIFT_SYNTAX_NODES_H
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#include "swift/Syntax/Syntax.h"
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#include "swift/Syntax/SyntaxCollection.h"
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#include "swift/Syntax/TokenSyntax.h"
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#include "swift/Syntax/UnknownSyntax.h"
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namespace swift {
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namespace syntax {
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% # Emit the non-collection classes first, then emit the collection classes
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% # that reference these classes.
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% for node in SYNTAX_NODES:
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% if not node.is_syntax_collection():
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class ${node.name};
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% end
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% end
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% for node in SYNTAX_NODES:
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% if node.is_syntax_collection():
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using ${node.name} =
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SyntaxCollection<SyntaxKind::${node.syntax_kind},
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${node.collection_element_type}>;
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% end
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% end
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% for node in SYNTAX_NODES:
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% if not node.is_syntax_collection():
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% qualifier = "" if node.is_base() else "final"
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% for line in dedented_lines(node.description):
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/// ${line}
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% end
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class ${node.name} ${qualifier} : public ${node.base_type} {
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% if node.is_buildable():
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friend class ${node.name}Builder;
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% end
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% if node.requires_validation():
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void validate() const;
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% end
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public:
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% if node.children:
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enum Cursor : uint32_t {
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% for child in node.children:
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${child.name},
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% end
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};
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% end
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${node.name}(const RC<const SyntaxData> &Data) : ${node.base_type}(Data) {
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% if node.requires_validation():
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this->validate();
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% end
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}
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% for child in node.children:
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% for line in dedented_lines(child.description):
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/// ${line}
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% end
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% if child.is_optional:
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llvm::Optional<${child.type_name}> get${child.name}() const;
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% else:
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${child.type_name} get${child.name}() const;
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% end
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% child_node = NODE_MAP.get(child.syntax_kind)
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% if child_node and child_node.is_syntax_collection():
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% child_elt = child.collection_element_name
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% child_elt_type = child_node.collection_element_type
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% if not child_elt:
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% raise Exception("'collection_element_name' should be set for '%s' of '%s'" % (child.name, node.name))
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% end
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/// Adds the provided `${child_elt}` to the node's `${child.name}`
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/// collection. The new raw node will be created in the same arena as this
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/// node.
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/// - param element: The new `${child_elt}` to add to the node's
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/// `${child.name}` collection.
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/// - returns: A copy of the receiver with the provided `${child_elt}`
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/// appended to its `${child.name}` collection.
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${node.name} add${child_elt}(${child_elt_type} ${child_elt});
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% end
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/// Returns a copy of the receiver with its `${child.name}` replaced. The new
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/// raw node will be created in the same arena as this node.
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/// - param newChild: The new `${child.name}` to replace the node's
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/// current `${child.name}`, if present.
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${node.name}
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with${child.name}(llvm::Optional<${child.type_name}> New${child.type_name});
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% end
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static bool kindof(SyntaxKind Kind) {
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% if node.is_base():
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return is${node.syntax_kind}Kind(Kind);
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% else:
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return Kind == SyntaxKind::${node.syntax_kind};
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% end
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}
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static bool classof(const Syntax *S) {
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return kindof(S->getKind());
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}
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};
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% end
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% end
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/// Calculating an identifier for all syntax nodes' structures for verification
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/// purposes.
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const char* getSyntaxStructureVersioningIdentifier();
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}
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}
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#endif // SWIFT_SYNTAX_NODES_H
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