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3d3a2a5925
Now that we parse Swift decls in one pass, we no longer need to track the parser's position across multiple parser calls.
110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
//===--- PersistentParserState.h - Parser State -----------------*- C++ -*-===//
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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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//
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// Parser state persistent across multiple parses.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_PARSE_PERSISTENTPARSERSTATE_H
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#define SWIFT_PARSE_PERSISTENTPARSERSTATE_H
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#include "swift/Basic/SourceLoc.h"
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#include "swift/Parse/LocalContext.h"
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#include "swift/Parse/ParserPosition.h"
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#include "swift/Parse/Scope.h"
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#include "llvm/ADT/DenseMap.h"
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namespace swift {
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class SourceFile;
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class DeclContext;
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class IterableDeclContext;
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enum class CodeCompletionDelayedDeclKind {
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TopLevelCodeDecl,
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Decl,
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FunctionBody,
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};
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class CodeCompletionDelayedDeclState {
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public:
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CodeCompletionDelayedDeclKind Kind;
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unsigned Flags;
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DeclContext *ParentContext;
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SavedScope Scope;
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unsigned StartOffset;
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unsigned EndOffset;
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unsigned PrevOffset;
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SavedScope takeScope() { return std::move(Scope); }
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CodeCompletionDelayedDeclState(CodeCompletionDelayedDeclKind Kind,
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unsigned Flags, DeclContext *ParentContext,
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SavedScope &&Scope, unsigned StartOffset,
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unsigned EndOffset, unsigned PrevOffset)
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: Kind(Kind), Flags(Flags), ParentContext(ParentContext),
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Scope(std::move(Scope)), StartOffset(StartOffset), EndOffset(EndOffset),
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PrevOffset(PrevOffset) {}
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};
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/// Parser state persistent across multiple parses.
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class PersistentParserState {
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public:
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// FIXME: When condition evaluation moves to a later phase, remove this bit
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// and adjust the client call 'performParseOnly'.
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bool PerformConditionEvaluation = true;
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private:
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swift::ScopeInfo ScopeInfo;
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std::unique_ptr<CodeCompletionDelayedDeclState> CodeCompletionDelayedDeclStat;
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/// The local context for all top-level code.
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TopLevelContext TopLevelCode;
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public:
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swift::ScopeInfo &getScopeInfo() { return ScopeInfo; }
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PersistentParserState();
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PersistentParserState(ASTContext &ctx) : PersistentParserState() { }
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~PersistentParserState();
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void setCodeCompletionDelayedDeclState(SourceManager &SM, unsigned BufferID,
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CodeCompletionDelayedDeclKind Kind,
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unsigned Flags,
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DeclContext *ParentContext,
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SourceRange BodyRange,
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SourceLoc PreviousLoc);
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void restoreCodeCompletionDelayedDeclState(
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const CodeCompletionDelayedDeclState &other);
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bool hasCodeCompletionDelayedDeclState() {
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return CodeCompletionDelayedDeclStat.get() != nullptr;
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}
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CodeCompletionDelayedDeclState &getCodeCompletionDelayedDeclState() {
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return *CodeCompletionDelayedDeclStat.get();
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}
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std::unique_ptr<CodeCompletionDelayedDeclState>
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takeCodeCompletionDelayedDeclState() {
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assert(hasCodeCompletionDelayedDeclState());
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return std::move(CodeCompletionDelayedDeclStat);
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}
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TopLevelContext &getTopLevelContext() {
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return TopLevelCode;
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}
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};
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} // end namespace swift
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#endif
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