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b394e35fdd
At some point we stopped completing keywords after `else` in an if statement. Bring back the completion of `if`, which is the only valid continuation other than a brace. rdar://37467474
920 lines
29 KiB
C++
920 lines
29 KiB
C++
//===--- CodeCompletion.h - Routines for code completion --------*- 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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#ifndef SWIFT_IDE_CODECOMPLETION_H
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#define SWIFT_IDE_CODECOMPLETION_H
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#include "swift/AST/Identifier.h"
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#include "swift/Basic/LLVM.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/TrailingObjects.h"
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#include <functional>
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#include <memory>
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#include <string>
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#include <vector>
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namespace swift {
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class CodeCompletionCallbacksFactory;
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class Decl;
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class DeclContext;
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class ModuleDecl;
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namespace ide {
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class CodeCompletionCache;
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class CodeCompletionContext;
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class CodeCompletionResultBuilder;
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struct RequestedCachedModule;
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/// \brief A routine to remove code completion tokens from code completion
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/// tests.
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///
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/// \code
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/// code-completion-token:
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/// '#^' identifier '^#'
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/// \endcode
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///
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/// \param Input test source code.
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/// \param TokenName names the token whose position should be returned in
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/// \p CompletionOffset.
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/// \param CompletionOffset set to ~0U on error, or to a 0-based byte offset on
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/// success.
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///
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/// \returns test source code without any code completion tokens.
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std::string removeCodeCompletionTokens(StringRef Input,
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StringRef TokenName,
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unsigned *CompletionOffset);
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namespace detail {
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class CodeCompletionStringChunk {
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friend class swift::ide::CodeCompletionResultBuilder;
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public:
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enum class ChunkKind {
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/// "open", "public", "internal", "fileprivate", or "private".
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AccessControlKeyword,
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/// such as @"availability".
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DeclAttrKeyword,
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/// such as "unavailable" etc. for @available.
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DeclAttrParamKeyword,
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/// The "override" keyword.
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OverrideKeyword,
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/// The "throws" keyword.
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ThrowsKeyword,
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/// The "rethrows" keyword.
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RethrowsKeyword,
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/// The keyword part of a declaration before the name, like "func".
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DeclIntroducer,
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/// Normal text chunk.
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Text,
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/// The first chunk of an optional substring that continues until
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/// \c NestingLevel decreases.
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OptionalBegin,
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/// Punctuation.
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LeftParen,
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RightParen,
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LeftBracket,
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RightBracket,
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LeftAngle,
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RightAngle,
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Dot,
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Ellipsis,
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Comma,
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ExclamationMark,
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QuestionMark,
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Ampersand,
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Equal,
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Whitespace,
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/// The first chunk of a substring that describes the parameter for a
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/// generic type.
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GenericParameterBegin,
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/// Generic type parameter name.
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GenericParameterName,
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/// The first chunk of a substring that describes the parameter for a
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/// function call.
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CallParameterBegin,
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/// Function call parameter name.
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CallParameterName,
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/// Function call parameter internal / local name. If the parameter has no
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/// formal API name, it can still have a local name which can be useful
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/// for display purposes.
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///
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/// This chunk should not be inserted into the editor buffer.
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CallParameterInternalName,
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/// A colon between parameter name and value. Should be inserted in the
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/// editor buffer if the preceding CallParameterName was inserted.
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CallParameterColon,
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/// A colon between parameter name and value. Used in decl attribute.
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DeclAttrParamColon,
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/// Required parameter type.
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CallParameterType,
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/// Desugared closure parameter type. This can be used to get the
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/// closure type if CallParameterType is a NameAliasType.
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CallParameterClosureType,
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/// A placeholder for \c ! or \c ? in a call to a method found by dynamic
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/// lookup.
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///
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/// The default spelling is \c !, but clients may render it as \c ? if
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/// desired.
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DynamicLookupMethodCallTail,
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/// A placeholder for \c ! or \c ? in a call to an optional method.
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///
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/// The default spelling is \c !, but clients may render it as \c ? if
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/// desired.
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OptionalMethodCallTail,
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/// Specifies the type of the whole entity that is returned in this code
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/// completion result. For example, for variable references it is the
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/// variable type, for function calls it is the return type.
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///
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/// This chunk should not be inserted into the editor buffer.
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TypeAnnotation,
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/// A brace statement -- left brace and right brace. The preferred
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/// position to put the cursor after the completion result is inserted
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/// into the editor buffer is between the braces.
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///
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/// The spelling is always "{}", but clients may choose to insert newline
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/// and indentation in between.
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BraceStmtWithCursor,
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};
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static bool chunkStartsNestedGroup(ChunkKind Kind) {
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return Kind == ChunkKind::CallParameterBegin ||
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Kind == ChunkKind::GenericParameterBegin ||
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Kind == ChunkKind::OptionalBegin;
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}
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static bool chunkHasText(ChunkKind Kind) {
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return Kind == ChunkKind::AccessControlKeyword ||
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Kind == ChunkKind::OverrideKeyword ||
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Kind == ChunkKind::ThrowsKeyword ||
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Kind == ChunkKind::RethrowsKeyword ||
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Kind == ChunkKind::DeclAttrKeyword ||
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Kind == ChunkKind::DeclIntroducer ||
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Kind == ChunkKind::Text ||
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Kind == ChunkKind::LeftParen ||
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Kind == ChunkKind::RightParen ||
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Kind == ChunkKind::LeftBracket ||
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Kind == ChunkKind::RightBracket ||
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Kind == ChunkKind::LeftAngle ||
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Kind == ChunkKind::RightAngle ||
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Kind == ChunkKind::Dot ||
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Kind == ChunkKind::Ellipsis ||
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Kind == ChunkKind::Comma ||
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Kind == ChunkKind::ExclamationMark ||
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Kind == ChunkKind::QuestionMark ||
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Kind == ChunkKind::Ampersand ||
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Kind == ChunkKind::Equal ||
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Kind == ChunkKind::Whitespace ||
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Kind == ChunkKind::CallParameterName ||
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Kind == ChunkKind::CallParameterInternalName ||
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Kind == ChunkKind::CallParameterColon ||
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Kind == ChunkKind::DeclAttrParamColon ||
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Kind == ChunkKind::DeclAttrParamKeyword ||
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Kind == ChunkKind::CallParameterType ||
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Kind == ChunkKind::CallParameterClosureType ||
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Kind == ChunkKind::GenericParameterName ||
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Kind == ChunkKind::DynamicLookupMethodCallTail ||
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Kind == ChunkKind::OptionalMethodCallTail ||
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Kind == ChunkKind::TypeAnnotation ||
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Kind == ChunkKind::BraceStmtWithCursor;
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}
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private:
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unsigned Kind : 8;
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unsigned NestingLevel : 8;
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/// \brief If true, then this chunk is an annotation that is included only
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/// for exposition and may not be inserted in the editor buffer.
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unsigned IsAnnotation : 1;
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StringRef Text;
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CodeCompletionStringChunk(ChunkKind Kind, unsigned NestingLevel, StringRef Text,
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bool isAnnotation)
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: Kind(unsigned(Kind)), NestingLevel(NestingLevel),
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IsAnnotation(isAnnotation), Text(Text) {
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assert(chunkHasText(Kind));
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}
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CodeCompletionStringChunk(ChunkKind Kind, unsigned NestingLevel,
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bool isAnnotation)
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: Kind(unsigned(Kind)), NestingLevel(NestingLevel),
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IsAnnotation(isAnnotation) {
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assert(!chunkHasText(Kind));
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}
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void setIsAnnotation() {
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IsAnnotation = 1;
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}
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public:
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ChunkKind getKind() const {
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return ChunkKind(Kind);
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}
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bool is(ChunkKind K) const { return getKind() == K; }
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unsigned getNestingLevel() const {
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return NestingLevel;
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}
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bool isAnnotation() const {
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return IsAnnotation;
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}
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bool hasText() const { return chunkHasText(getKind()); }
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StringRef getText() const {
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assert(hasText());
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return Text;
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}
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bool endsPreviousNestedGroup(unsigned GroupNestingLevel) const {
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return NestingLevel < GroupNestingLevel ||
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(NestingLevel == GroupNestingLevel && chunkStartsNestedGroup(getKind()));
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}
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static CodeCompletionStringChunk createWithText(ChunkKind Kind,
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unsigned NestingLevel,
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StringRef Text,
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bool isAnnotation = false) {
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return CodeCompletionStringChunk(Kind, NestingLevel, Text, isAnnotation);
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}
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static CodeCompletionStringChunk createSimple(ChunkKind Kind,
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unsigned NestingLevel,
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bool isAnnotation = false) {
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return CodeCompletionStringChunk(Kind, NestingLevel, isAnnotation);
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}
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};
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} // end namespace detail
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/// \brief A structured representation of a code completion string.
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class alignas(detail::CodeCompletionStringChunk) CodeCompletionString final :
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private llvm::TrailingObjects<CodeCompletionString,
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detail::CodeCompletionStringChunk> {
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friend class CodeCompletionResultBuilder;
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friend TrailingObjects;
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public:
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using Chunk = detail::CodeCompletionStringChunk;
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private:
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unsigned NumChunks : 16;
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CodeCompletionString(ArrayRef<Chunk> Chunks);
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public:
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/// Creates a \c CodeCompletionString from a list of \c Chunks.
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///
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/// \note The caller must ensure any text inside \c Chunks will outlive this
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/// object, typically by storing them inside a \c CodeCompletionResultSink.
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static CodeCompletionString *create(llvm::BumpPtrAllocator &Allocator,
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ArrayRef<Chunk> Chunks);
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ArrayRef<Chunk> getChunks() const {
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return {getTrailingObjects<Chunk>(), NumChunks};
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}
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StringRef getFirstTextChunk(bool includeLeadingPunctuation = false) const;
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Optional<unsigned>
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getFirstTextChunkIndex(bool includeLeadingPunctuation = false) const;
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/// Concatenates all text chunks considered part of the name to \p OS.
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void getName(raw_ostream &OS) const;
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/// Print a debug representation of the code completion string to \p OS.
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void print(raw_ostream &OS) const;
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void dump() const;
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};
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/// \brief Describes the origin of the code completion result.
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///
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/// This enum is ordered from the contexts that are "nearest" to the code
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/// completion point to "outside" contexts.
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enum class SemanticContextKind {
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/// Used in cases when the concept of semantic context is not applicable.
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None,
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/// \brief This is a highly-likely expression-context-specific completion
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/// result. This description is intentionally vague: this is a catch-all
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/// category for all heuristics for highly-likely results.
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///
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/// For example, the name of an overridden superclass member inside a nominal
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/// member function has ExpressionSpecific context:
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/// \code
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/// class Base {
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/// init() {}
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/// init(a: Int) {}
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/// func foo() {}
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/// func bar() {}
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/// }
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/// class Derived {
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/// init() {
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/// super. // init() -- ExpressionSpecific
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/// // init(a: Int) -- Super
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/// }
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///
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/// func foo() {
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/// super. // foo() -- ExpressionSpecific
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/// // bar() -- Super
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/// }
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/// }
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/// \endcode
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ExpressionSpecific,
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/// A declaration from the same function.
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Local,
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/// A declaration found in the immediately enclosing nominal decl.
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CurrentNominal,
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/// A declaration found in the superclass of the immediately enclosing
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/// nominal decl.
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Super,
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/// A declaration found in the non-immediately enclosing nominal decl.
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///
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/// For example, 'Foo' is visible at (1) because of this.
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/// \code
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/// struct A {
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/// typealias Foo = Int
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/// struct B {
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/// func foo() {
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/// // (1)
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/// }
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/// }
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/// }
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/// \endcode
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OutsideNominal,
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/// A declaration from the current module.
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CurrentModule,
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/// A declaration imported from other module.
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OtherModule,
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};
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/// The declaration kind of a code completion result, if it is a declaration.
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enum class CodeCompletionDeclKind {
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Module,
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Class,
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Struct,
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Enum,
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EnumElement,
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Protocol,
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AssociatedType,
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TypeAlias,
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GenericTypeParam,
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Constructor,
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Destructor,
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Subscript,
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StaticMethod,
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InstanceMethod,
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PrefixOperatorFunction,
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PostfixOperatorFunction,
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InfixOperatorFunction,
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FreeFunction,
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StaticVar,
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InstanceVar,
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LocalVar,
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GlobalVar,
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PrecedenceGroup,
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};
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enum class CodeCompletionLiteralKind {
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ArrayLiteral,
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BooleanLiteral,
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ColorLiteral,
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DictionaryLiteral,
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IntegerLiteral,
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ImageLiteral,
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NilLiteral,
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StringLiteral,
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Tuple,
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};
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enum class CodeCompletionOperatorKind {
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None,
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Unknown,
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Bang, // !
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NotEq, // !=
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NotEqEq, // !==
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Modulo, // %
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ModuloEq, // %=
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Amp, // &
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AmpAmp, // &&
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AmpStar, // &*
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AmpPlus, // &+
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AmpMinus, // &-
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AmpEq, // &=
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LParen, // ( -- not really an operator, but treated as one in some cases.
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Star, // *
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StarEq, // *=
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Plus, // +
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PlusEq, // +=
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Minus, // -
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MinusEq, // -=
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Dot, // .
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DotDotDot, // ...
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DotDotLess, // ..<
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Slash, // /
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SlashEq, // /=
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Less, // <
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LessLess, // <<
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LessLessEq, // <<=
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LessEq, // <=
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Eq, // =
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EqEq, // ==
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EqEqEq, // ===
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Greater, // >
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GreaterEq, // >=
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GreaterGreater, // >>
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GreaterGreaterEq, // >>=
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QuestionDot, // ?.
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Caret, // ^
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CaretEq, // ^=
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Pipe, // |
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PipeEq, // |=
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PipePipe, // ||
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TildeEq, // ~=
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};
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enum class CodeCompletionKeywordKind {
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None,
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#define KEYWORD(X) kw_##X,
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#define POUND_KEYWORD(X) pound_##X,
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#include "swift/Syntax/TokenKinds.def"
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};
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enum class CompletionKind {
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None,
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Import,
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UnresolvedMember,
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DotExpr,
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StmtOrExpr,
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PostfixExprBeginning,
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PostfixExpr,
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PostfixExprParen,
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SuperExpr,
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SuperExprDot,
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KeyPathExpr,
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KeyPathExprDot,
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TypeSimpleBeginning,
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TypeIdentifierWithDot,
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TypeIdentifierWithoutDot,
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CaseStmtBeginning,
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CaseStmtDotPrefix,
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NominalMemberBeginning,
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AttributeBegin,
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AttributeDeclParen,
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PoundAvailablePlatform,
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AssignmentRHS,
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CallArg,
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ReturnStmtExpr,
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ForEachSequence,
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AfterPound,
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AfterIfStmtElse,
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GenericParams,
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SwiftKeyPath,
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};
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/// \brief A single code completion result.
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class CodeCompletionResult {
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friend class CodeCompletionResultBuilder;
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public:
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enum ResultKind {
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Declaration,
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Keyword,
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Pattern,
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Literal,
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BuiltinOperator,
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};
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/// Describes the relationship between the type of the completion results and
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/// the expected type at the code completion position.
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enum ExpectedTypeRelation {
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/// The relationship of the result's type to the expected type is not
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/// invalid, not convertible, and not identical.
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Unrelated,
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/// The result's type is invalid at the expected position.
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Invalid,
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/// The result's type is convertible to the type of the expected.
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Convertible,
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/// The result's type is identical to the type of the expected.
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Identical,
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};
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enum NotRecommendedReason {
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Redundant,
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TypeMismatch,
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Deprecated,
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NoReason,
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};
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private:
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unsigned Kind : 3;
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unsigned AssociatedKind : 8;
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unsigned KnownOperatorKind : 6;
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unsigned SemanticContext : 3;
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unsigned NotRecommended : 1;
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unsigned NotRecReason : 3;
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/// The number of bytes to the left of the code completion point that
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/// should be erased first if this completion string is inserted in the
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/// editor buffer.
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unsigned NumBytesToErase : 7;
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public:
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static const unsigned MaxNumBytesToErase = 127;
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private:
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CodeCompletionString *CompletionString;
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StringRef ModuleName;
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StringRef BriefDocComment;
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ArrayRef<StringRef> AssociatedUSRs;
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ArrayRef<std::pair<StringRef, StringRef>> DocWords;
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unsigned TypeDistance : 3;
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public:
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/// Constructs a \c Pattern, \c Keyword or \c BuiltinOperator result.
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///
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/// \note The caller must ensure \c CodeCompletionString outlives this result.
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CodeCompletionResult(ResultKind Kind, SemanticContextKind SemanticContext,
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unsigned NumBytesToErase,
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CodeCompletionString *CompletionString,
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ExpectedTypeRelation TypeDistance = Unrelated,
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CodeCompletionOperatorKind KnownOperatorKind =
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CodeCompletionOperatorKind::None)
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: Kind(Kind), KnownOperatorKind(unsigned(KnownOperatorKind)),
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SemanticContext(unsigned(SemanticContext)), NotRecommended(false),
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|
NotRecReason(NotRecommendedReason::NoReason),
|
|
NumBytesToErase(NumBytesToErase), CompletionString(CompletionString),
|
|
TypeDistance(TypeDistance) {
|
|
assert(Kind != Declaration && "use the other constructor");
|
|
assert(CompletionString);
|
|
if (isOperator() && KnownOperatorKind == CodeCompletionOperatorKind::None)
|
|
this->KnownOperatorKind =
|
|
(unsigned)getCodeCompletionOperatorKind(CompletionString);
|
|
assert(!isOperator() ||
|
|
getOperatorKind() != CodeCompletionOperatorKind::None);
|
|
AssociatedKind = 0;
|
|
}
|
|
|
|
/// Constructs a \c Keyword result.
|
|
///
|
|
/// \note The caller must ensure \c CodeCompletionString outlives this result.
|
|
CodeCompletionResult(CodeCompletionKeywordKind Kind,
|
|
SemanticContextKind SemanticContext,
|
|
unsigned NumBytesToErase,
|
|
CodeCompletionString *CompletionString,
|
|
ExpectedTypeRelation TypeDistance = Unrelated)
|
|
: Kind(Keyword), KnownOperatorKind(0),
|
|
SemanticContext(unsigned(SemanticContext)), NotRecommended(false),
|
|
NotRecReason(NotRecommendedReason::NoReason),
|
|
NumBytesToErase(NumBytesToErase), CompletionString(CompletionString),
|
|
TypeDistance(TypeDistance) {
|
|
assert(CompletionString);
|
|
AssociatedKind = static_cast<unsigned>(Kind);
|
|
}
|
|
|
|
/// Constructs a \c Literal result.
|
|
///
|
|
/// \note The caller must ensure \c CodeCompletionString outlives this result.
|
|
CodeCompletionResult(CodeCompletionLiteralKind LiteralKind,
|
|
SemanticContextKind SemanticContext,
|
|
unsigned NumBytesToErase,
|
|
CodeCompletionString *CompletionString,
|
|
ExpectedTypeRelation TypeDistance)
|
|
: Kind(Literal), KnownOperatorKind(0),
|
|
SemanticContext(unsigned(SemanticContext)), NotRecommended(false),
|
|
NotRecReason(NotRecommendedReason::NoReason),
|
|
NumBytesToErase(NumBytesToErase), CompletionString(CompletionString),
|
|
TypeDistance(TypeDistance) {
|
|
AssociatedKind = static_cast<unsigned>(LiteralKind);
|
|
assert(CompletionString);
|
|
}
|
|
|
|
/// Constructs a \c Declaration result.
|
|
///
|
|
/// \note The caller must ensure \c CodeCompletionString and any StringRef
|
|
/// arguments outlive this result, typically by storing them in the same
|
|
/// \c CodeCompletionResultSink as the result itself.
|
|
CodeCompletionResult(SemanticContextKind SemanticContext,
|
|
unsigned NumBytesToErase,
|
|
CodeCompletionString *CompletionString,
|
|
const Decl *AssociatedDecl, StringRef ModuleName,
|
|
bool NotRecommended,
|
|
CodeCompletionResult::NotRecommendedReason NotRecReason,
|
|
StringRef BriefDocComment,
|
|
ArrayRef<StringRef> AssociatedUSRs,
|
|
ArrayRef<std::pair<StringRef, StringRef>> DocWords,
|
|
enum ExpectedTypeRelation TypeDistance)
|
|
: Kind(ResultKind::Declaration), KnownOperatorKind(0),
|
|
SemanticContext(unsigned(SemanticContext)),
|
|
NotRecommended(NotRecommended), NotRecReason(NotRecReason),
|
|
NumBytesToErase(NumBytesToErase), CompletionString(CompletionString),
|
|
ModuleName(ModuleName), BriefDocComment(BriefDocComment),
|
|
AssociatedUSRs(AssociatedUSRs), DocWords(DocWords),
|
|
TypeDistance(TypeDistance) {
|
|
assert(AssociatedDecl && "should have a decl");
|
|
AssociatedKind = unsigned(getCodeCompletionDeclKind(AssociatedDecl));
|
|
assert(CompletionString);
|
|
if (isOperator())
|
|
KnownOperatorKind =
|
|
(unsigned)getCodeCompletionOperatorKind(CompletionString);
|
|
assert(!isOperator() ||
|
|
getOperatorKind() != CodeCompletionOperatorKind::None);
|
|
}
|
|
|
|
// FIXME:
|
|
CodeCompletionResult(SemanticContextKind SemanticContext,
|
|
unsigned NumBytesToErase,
|
|
CodeCompletionString *CompletionString,
|
|
CodeCompletionDeclKind DeclKind, StringRef ModuleName,
|
|
bool NotRecommended,
|
|
CodeCompletionResult::NotRecommendedReason NotRecReason,
|
|
StringRef BriefDocComment,
|
|
ArrayRef<StringRef> AssociatedUSRs,
|
|
ArrayRef<std::pair<StringRef, StringRef>> DocWords,
|
|
CodeCompletionOperatorKind KnownOperatorKind)
|
|
: Kind(ResultKind::Declaration),
|
|
KnownOperatorKind(unsigned(KnownOperatorKind)),
|
|
SemanticContext(unsigned(SemanticContext)),
|
|
NotRecommended(NotRecommended), NotRecReason(NotRecReason),
|
|
NumBytesToErase(NumBytesToErase), CompletionString(CompletionString),
|
|
ModuleName(ModuleName), BriefDocComment(BriefDocComment),
|
|
AssociatedUSRs(AssociatedUSRs), DocWords(DocWords) {
|
|
AssociatedKind = static_cast<unsigned>(DeclKind);
|
|
assert(CompletionString);
|
|
TypeDistance = ExpectedTypeRelation::Unrelated;
|
|
assert(!isOperator() ||
|
|
getOperatorKind() != CodeCompletionOperatorKind::None);
|
|
}
|
|
|
|
ResultKind getKind() const { return static_cast<ResultKind>(Kind); }
|
|
|
|
CodeCompletionDeclKind getAssociatedDeclKind() const {
|
|
assert(getKind() == Declaration);
|
|
return static_cast<CodeCompletionDeclKind>(AssociatedKind);
|
|
}
|
|
|
|
CodeCompletionLiteralKind getLiteralKind() const {
|
|
assert(getKind() == Literal);
|
|
return static_cast<CodeCompletionLiteralKind>(AssociatedKind);
|
|
}
|
|
|
|
CodeCompletionKeywordKind getKeywordKind() const {
|
|
assert(getKind() == Keyword);
|
|
return static_cast<CodeCompletionKeywordKind>(AssociatedKind);
|
|
}
|
|
|
|
bool isOperator() const {
|
|
if (getKind() != Declaration)
|
|
return getKind() == BuiltinOperator;
|
|
switch (getAssociatedDeclKind()) {
|
|
case CodeCompletionDeclKind::PrefixOperatorFunction:
|
|
case CodeCompletionDeclKind::PostfixOperatorFunction:
|
|
case CodeCompletionDeclKind::InfixOperatorFunction:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
CodeCompletionOperatorKind getOperatorKind() const {
|
|
assert(isOperator());
|
|
return static_cast<CodeCompletionOperatorKind>(KnownOperatorKind);
|
|
}
|
|
|
|
ExpectedTypeRelation getExpectedTypeRelation() const {
|
|
return static_cast<ExpectedTypeRelation>(TypeDistance);
|
|
}
|
|
|
|
NotRecommendedReason getNotRecommendedReason() const {
|
|
return static_cast<NotRecommendedReason>(NotRecReason);
|
|
}
|
|
|
|
SemanticContextKind getSemanticContext() const {
|
|
return static_cast<SemanticContextKind>(SemanticContext);
|
|
}
|
|
|
|
bool isNotRecommended() const {
|
|
return NotRecommended;
|
|
}
|
|
|
|
unsigned getNumBytesToErase() const {
|
|
return NumBytesToErase;
|
|
}
|
|
|
|
CodeCompletionString *getCompletionString() const {
|
|
return CompletionString;
|
|
}
|
|
|
|
StringRef getModuleName() const { return ModuleName; }
|
|
|
|
StringRef getBriefDocComment() const {
|
|
return BriefDocComment;
|
|
}
|
|
|
|
ArrayRef<StringRef> getAssociatedUSRs() const {
|
|
return AssociatedUSRs;
|
|
}
|
|
|
|
ArrayRef<std::pair<StringRef, StringRef>> getDeclKeywords() const {
|
|
return DocWords;
|
|
}
|
|
|
|
/// Print a debug representation of the code completion result to \p OS.
|
|
void print(raw_ostream &OS) const;
|
|
void dump() const;
|
|
|
|
static CodeCompletionDeclKind getCodeCompletionDeclKind(const Decl *D);
|
|
static CodeCompletionOperatorKind
|
|
getCodeCompletionOperatorKind(StringRef name);
|
|
static CodeCompletionOperatorKind
|
|
getCodeCompletionOperatorKind(CodeCompletionString *str);
|
|
};
|
|
|
|
struct CodeCompletionResultSink {
|
|
using AllocatorPtr = std::shared_ptr<llvm::BumpPtrAllocator>;
|
|
|
|
/// The allocator used to allocate results "native" to this sink.
|
|
AllocatorPtr Allocator;
|
|
|
|
/// Allocators that keep alive "foreign" results imported into this sink from
|
|
/// other sinks.
|
|
std::vector<AllocatorPtr> ForeignAllocators;
|
|
|
|
std::vector<CodeCompletionResult *> Results;
|
|
|
|
/// A single-element cache for module names stored in Allocator, keyed by a
|
|
/// clang::Module * or swift::ModuleDecl *.
|
|
std::pair<void *, StringRef> LastModule;
|
|
|
|
CodeCompletionResultSink()
|
|
: Allocator(std::make_shared<llvm::BumpPtrAllocator>()) {}
|
|
};
|
|
|
|
class CodeCompletionContext {
|
|
friend class CodeCompletionResultBuilder;
|
|
|
|
/// \brief A set of current completion results, not yet delivered to the
|
|
/// consumer.
|
|
CodeCompletionResultSink CurrentResults;
|
|
|
|
public:
|
|
CodeCompletionCache &Cache;
|
|
CompletionKind CodeCompletionKind = CompletionKind::None;
|
|
bool HasExpectedTypeRelation = false;
|
|
|
|
/// Whether there may be members that can use implicit member syntax,
|
|
/// e.g. `x = .foo`.
|
|
bool MayUseImplicitMemberExpr = false;
|
|
|
|
CodeCompletionContext(CodeCompletionCache &Cache)
|
|
: Cache(Cache) {}
|
|
|
|
/// \brief Allocate a string owned by the code completion context.
|
|
StringRef copyString(StringRef Str);
|
|
|
|
/// \brief Return current code completion results.
|
|
MutableArrayRef<CodeCompletionResult *> takeResults();
|
|
|
|
/// \brief Sort code completion results in an implementation-defined order
|
|
/// in place.
|
|
static void sortCompletionResults(
|
|
MutableArrayRef<CodeCompletionResult *> Results);
|
|
|
|
CodeCompletionResultSink &getResultSink() {
|
|
return CurrentResults;
|
|
}
|
|
};
|
|
|
|
/// \brief An abstract base class for consumers of code completion results.
|
|
/// \see \c SimpleCachingCodeCompletionConsumer.
|
|
class CodeCompletionConsumer {
|
|
public:
|
|
virtual ~CodeCompletionConsumer() {}
|
|
virtual void
|
|
handleResultsAndModules(CodeCompletionContext &context,
|
|
ArrayRef<RequestedCachedModule> requestedModules,
|
|
DeclContext *DCForModules) = 0;
|
|
};
|
|
|
|
/// A simplified code completion consumer interface that clients can use to get
|
|
/// CodeCompletionResults with automatic caching of top-level completions from
|
|
/// imported modules.
|
|
struct SimpleCachingCodeCompletionConsumer : public CodeCompletionConsumer {
|
|
|
|
// Implement the CodeCompletionConsumer interface.
|
|
void handleResultsAndModules(CodeCompletionContext &context,
|
|
ArrayRef<RequestedCachedModule> requestedModules,
|
|
DeclContext *DCForModules) override;
|
|
|
|
/// Clients should override this method to receive \p Results.
|
|
virtual void handleResults(
|
|
MutableArrayRef<CodeCompletionResult *> Results) = 0;
|
|
};
|
|
|
|
/// \brief A code completion result consumer that prints the results to a
|
|
/// \c raw_ostream.
|
|
class PrintingCodeCompletionConsumer
|
|
: public SimpleCachingCodeCompletionConsumer {
|
|
llvm::raw_ostream &OS;
|
|
bool IncludeKeywords;
|
|
bool IncludeComments;
|
|
|
|
public:
|
|
PrintingCodeCompletionConsumer(llvm::raw_ostream &OS,
|
|
bool IncludeKeywords = true,
|
|
bool IncludeComments = true)
|
|
: OS(OS),
|
|
IncludeKeywords(IncludeKeywords),
|
|
IncludeComments(IncludeComments) {}
|
|
|
|
void handleResults(MutableArrayRef<CodeCompletionResult *> Results) override;
|
|
};
|
|
|
|
/// \brief Create a factory for code completion callbacks.
|
|
CodeCompletionCallbacksFactory *
|
|
makeCodeCompletionCallbacksFactory(CodeCompletionContext &CompletionContext,
|
|
CodeCompletionConsumer &Consumer);
|
|
|
|
/// Lookup the top-level code completions from \p module and store them in
|
|
/// \p targetSink.
|
|
///
|
|
/// Results are looked up as if in \p currDeclContext, which may be null.
|
|
void lookupCodeCompletionResultsFromModule(CodeCompletionResultSink &targetSink,
|
|
const ModuleDecl *module,
|
|
ArrayRef<std::string> accessPath,
|
|
bool needLeadingDot,
|
|
const DeclContext *currDeclContext);
|
|
|
|
/// Copy code completion results from \p sourceSink to \p targetSink, possibly
|
|
/// restricting by \p onlyTypes.
|
|
void copyCodeCompletionResults(CodeCompletionResultSink &targetSink,
|
|
CodeCompletionResultSink &sourceSink,
|
|
bool onlyTypes);
|
|
|
|
} // end namespace ide
|
|
} // end namespace swift
|
|
|
|
template <> struct llvm::DenseMapInfo<swift::ide::CodeCompletionKeywordKind> {
|
|
using Kind = swift::ide::CodeCompletionKeywordKind;
|
|
static Kind getEmptyKey() { return Kind(~0u); }
|
|
static Kind getTombstoneKey() { return Kind(~1u); }
|
|
static unsigned getHashValue(const Kind &Val) { return unsigned(Val); }
|
|
static bool isEqual(const Kind &LHS, const Kind &RHS) { return LHS == RHS; }
|
|
};
|
|
template <> struct llvm::DenseMapInfo<swift::ide::CodeCompletionLiteralKind> {
|
|
using Kind = swift::ide::CodeCompletionLiteralKind;
|
|
static Kind getEmptyKey() { return Kind(~0u); }
|
|
static Kind getTombstoneKey() { return Kind(~1u); }
|
|
static unsigned getHashValue(const Kind &Val) { return unsigned(Val); }
|
|
static bool isEqual(const Kind &LHS, const Kind &RHS) { return LHS == RHS; }
|
|
};
|
|
template <> struct llvm::DenseMapInfo<swift::ide::CodeCompletionDeclKind> {
|
|
using Kind = swift::ide::CodeCompletionDeclKind;
|
|
static Kind getEmptyKey() { return Kind(~0u); }
|
|
static Kind getTombstoneKey() { return Kind(~1u); }
|
|
static unsigned getHashValue(const Kind &Val) { return unsigned(Val); }
|
|
static bool isEqual(const Kind &LHS, const Kind &RHS) { return LHS == RHS; }
|
|
};
|
|
|
|
#endif // SWIFT_IDE_CODECOMPLETION_H
|