mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
1ee2db4520
Accessors logically belong to their storage and can be synthesized on the fly, so removing them from the members list eliminates one source of mutability (but doesn't eliminate it; there are also witnesses for derived conformances, and implicit constructors). Since a few ASTWalker implementations break in non-trivial ways when the traversal is changed to visit accessors as children of the storage rather than peers, I hacked up the ASTWalker to optionally preserve the old traversal order for now. This is ugly and needs to be cleaned up, but I want to avoid breaking _too_ much with this commit.
1554 lines
54 KiB
C++
1554 lines
54 KiB
C++
//===--- SyntaxModel.cpp - Routines for IDE syntax model ------------------===//
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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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#include "swift/IDE/SyntaxModel.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/ASTWalker.h"
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#include "swift/AST/Decl.h"
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#include "swift/AST/Expr.h"
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#include "swift/AST/Pattern.h"
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#include "swift/AST/ParameterList.h"
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#include "swift/AST/Module.h"
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#include "swift/AST/Stmt.h"
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#include "swift/AST/TypeRepr.h"
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#include "swift/Basic/SourceManager.h"
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#include "swift/Parse/Lexer.h"
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#include "swift/Parse/Token.h"
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#include "swift/Config.h"
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#include "swift/Subsystems.h"
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#include "clang/Basic/CharInfo.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include <vector>
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#include <regex>
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using namespace swift;
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using namespace ide;
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void SyntaxModelWalker::anchor() {}
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struct SyntaxModelContext::Implementation {
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SourceFile &SrcFile;
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const LangOptions &LangOpts;
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const SourceManager &SrcMgr;
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std::vector<SyntaxNode> TokenNodes;
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Implementation(SourceFile &SrcFile)
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: SrcFile(SrcFile),
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LangOpts(SrcFile.getASTContext().LangOpts),
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SrcMgr(SrcFile.getASTContext().SourceMgr) {}
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};
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SyntaxModelContext::SyntaxModelContext(SourceFile &SrcFile)
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: Impl(*new Implementation(SrcFile)) {
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const bool IsPlayground = Impl.LangOpts.Playground;
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const SourceManager &SM = Impl.SrcMgr;
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ArrayRef<Token> Tokens = SrcFile.getAllTokens();
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std::vector<SyntaxNode> Nodes;
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SourceLoc AttrLoc;
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SourceLoc UnaryMinusLoc;
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for (unsigned I = 0, E = Tokens.size(); I != E; ++I) {
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auto &Tok = Tokens[I];
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// Ignore empty string literals between interpolations, e.g. "\(1)\(2)"
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if (!Tok.getLength())
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continue;
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SyntaxNodeKind Kind;
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SourceLoc Loc;
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Optional<unsigned> Length;
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if (AttrLoc.isValid()) {
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// This token is following @, see if it's a known attribute name.
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// Type attribute, decl attribute, or '@unknown' for swift case statement.
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if (TypeAttributes::getAttrKindFromString(Tok.getText()) != TAK_Count ||
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DeclAttribute::getAttrKindFromString(Tok.getText()) != DAK_Count ||
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Tok.getText() == "unknown") {
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// It's a known attribute, so treat it as a syntactic attribute node for
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// syntax coloring. If swift gets user attributes then all identifiers
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// will be treated as syntactic attribute nodes.
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Loc = AttrLoc;
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Length = SM.getByteDistance(Loc, Tok.getLoc()) + Tok.getLength();
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Kind = SyntaxNodeKind::AttributeId;
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}
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AttrLoc = SourceLoc();
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}
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if (!Loc.isValid()) {
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Loc = Tok.getLoc();
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Length = Tok.getLength();
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switch(Tok.getKind()) {
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#define KEYWORD(X) case tok::kw_##X:
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#include "swift/Syntax/TokenKinds.def"
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#undef KEYWORD
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case tok::contextual_keyword:
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Kind = SyntaxNodeKind::Keyword;
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break;
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#define POUND_OBJECT_LITERAL(Name, Desc, Proto) case tok::pound_##Name:
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#include "swift/Syntax/TokenKinds.def"
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Kind = SyntaxNodeKind::Keyword;
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break;
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#define POUND_COND_DIRECTIVE_KEYWORD(Name) case tok::pound_##Name:
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#include "swift/Syntax/TokenKinds.def"
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Kind = SyntaxNodeKind::BuildConfigKeyword;
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break;
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#define POUND_DIRECTIVE_KEYWORD(Name) case tok::pound_##Name:
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#define POUND_COND_DIRECTIVE_KEYWORD(Name)
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#include "swift/Syntax/TokenKinds.def"
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Kind = SyntaxNodeKind::PoundDirectiveKeyword;
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break;
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#define POUND_OBJECT_LITERAL(Name, Desc, Proto)
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#define POUND_DIRECTIVE_KEYWORD(Name)
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#define POUND_KEYWORD(Name) case tok::pound_##Name:
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#include "swift/Syntax/TokenKinds.def"
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Kind = SyntaxNodeKind::Keyword;
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break;
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case tok::identifier:
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if (Tok.getText().startswith("<#"))
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Kind = SyntaxNodeKind::EditorPlaceholder;
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else
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Kind = SyntaxNodeKind::Identifier;
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break;
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case tok::dollarident: Kind = SyntaxNodeKind::DollarIdent; break;
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case tok::string_literal: Kind = SyntaxNodeKind::String; break;
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case tok::integer_literal:
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Kind = SyntaxNodeKind::Integer;
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if (UnaryMinusLoc.isValid()) {
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Loc = UnaryMinusLoc;
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Length = *Length + SM.getByteDistance(UnaryMinusLoc, Tok.getLoc());
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}
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break;
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case tok::floating_literal:
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Kind = SyntaxNodeKind::Floating;
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if (UnaryMinusLoc.isValid()) {
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Loc = UnaryMinusLoc;
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Length = *Length + SM.getByteDistance(UnaryMinusLoc, Tok.getLoc());
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}
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break;
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case tok::oper_prefix:
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if (Tok.getText() == "-")
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UnaryMinusLoc = Loc;
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continue;
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case tok::comment:
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if (Tok.getText().startswith("///") ||
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(IsPlayground && Tok.getText().startswith("//:")))
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Kind = SyntaxNodeKind::DocCommentLine;
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else if (Tok.getText().startswith("/**") ||
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(IsPlayground && Tok.getText().startswith("/*:")))
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Kind = SyntaxNodeKind::DocCommentBlock;
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else if (Tok.getText().startswith("//"))
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Kind = SyntaxNodeKind::CommentLine;
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else
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Kind = SyntaxNodeKind::CommentBlock;
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break;
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case tok::at_sign:
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// Set the location of @ and continue. Next token should be the
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// attribute name.
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AttrLoc = Tok.getLoc();
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continue;
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case tok::string_interpolation_anchor: {
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Kind = SyntaxNodeKind::StringInterpolationAnchor;
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break;
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}
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case tok::unknown: {
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if (Tok.getRawText().ltrim('#').startswith("\"")) {
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// This is likely an invalid single-line ("), multi-line ("""),
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// or raw (#", ##", #""", etc.) string literal.
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Kind = SyntaxNodeKind::String;
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break;
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}
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continue;
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}
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default:
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continue;
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}
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}
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UnaryMinusLoc = SourceLoc(); // Reset.
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assert(Loc.isValid());
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assert(Nodes.empty() || SM.isBeforeInBuffer(Nodes.back().Range.getStart(),
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Loc));
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Nodes.emplace_back(Kind, CharSourceRange(Loc, Length.getValue()));
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}
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Impl.TokenNodes = std::move(Nodes);
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}
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SyntaxModelContext::~SyntaxModelContext() {
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delete &Impl;
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}
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namespace {
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using ASTNodeType = ASTWalker::ParentTy;
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struct StructureElement {
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SyntaxStructureNode StructureNode;
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ASTNodeType ASTNode;
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StructureElement(const SyntaxStructureNode &StructureNode,
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const ASTNodeType &ASTNode)
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:StructureNode(StructureNode), ASTNode(ASTNode) { }
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};
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static const std::vector<std::string> URLProtocols = {
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// Use RegexStrURL:
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"acap", "afp", "afs", "cid", "data", "fax", "feed", "file", "ftp", "go",
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"gopher", "http", "https", "imap", "ldap", "mailserver", "mid", "modem",
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"news", "nntp", "opaquelocktoken", "pop", "prospero", "rdar", "rtsp", "service"
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"sip", "soap.beep", "soap.beeps", "tel", "telnet", "tip", "tn3270", "urn",
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"vemmi", "wais", "xcdoc", "z39.50r","z39.50s",
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// Use RegexStrMailURL:
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"mailto", "im",
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// Use RegexStrRadarURL:
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"radar"
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};
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static const char *const RegexStrURL =
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"(acap|afp|afs|cid|data|fax|feed|file|ftp|go|"
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"gopher|http|https|imap|ldap|mailserver|mid|modem|news|nntp|opaquelocktoken|"
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"pop|prospero|rdar|rtsp|service|sip|soap\\.beep|soap\\.beeps|tel|telnet|tip|"
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"tn3270|urn|vemmi|wais|xcdoc|z39\\.50r|z39\\.50s)://"
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"([a-zA-Z0-9\\-_.]+/)?[a-zA-Z0-9;/?:@\\&=+$,\\-_.!~*'()%#]+";
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static const char *const RegexStrMailURL =
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"(mailto|im):[a-zA-Z0-9\\-_]+@[a-zA-Z0-9\\-_\\.!%]+";
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static const char *const RegexStrRadarURL =
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"radar:[a-zA-Z0-9;/?:@\\&=+$,\\-_.!~*'()%#]+";
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class ModelASTWalker : public ASTWalker {
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ArrayRef<Token> AllTokensInFile;
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const LangOptions &LangOpts;
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const SourceManager &SM;
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unsigned BufferID;
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std::vector<StructureElement> SubStructureStack;
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SourceLoc LastLoc;
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static const std::regex &getURLRegex(StringRef Protocol);
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Optional<SyntaxNode> parseFieldNode(StringRef Text, StringRef OrigText,
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SourceLoc OrigLoc);
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llvm::DenseSet<ASTNode> NodesVisitedBefore;
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/// When non-zero, we should avoid passing tokens as syntax nodes since a parent of several tokens
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/// is considered as one, e.g. object literal expression.
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uint8_t AvoidPassingSyntaxToken = 0;
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public:
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SyntaxModelWalker &Walker;
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ArrayRef<SyntaxNode> TokenNodes;
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ModelASTWalker(const SourceFile &File, SyntaxModelWalker &Walker)
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: AllTokensInFile(File.getAllTokens()),
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LangOpts(File.getASTContext().LangOpts),
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SM(File.getASTContext().SourceMgr),
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BufferID(File.getBufferID().getValue()),
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Walker(Walker) { }
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// FIXME: Remove this
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bool shouldWalkAccessorsTheOldWay() override { return true; }
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void visitSourceFile(SourceFile &SrcFile, ArrayRef<SyntaxNode> Tokens);
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std::pair<bool, Expr *> walkToExprPre(Expr *E) override;
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Expr *walkToExprPost(Expr *E) override;
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std::pair<bool, Stmt *> walkToStmtPre(Stmt *S) override;
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Stmt *walkToStmtPost(Stmt *S) override;
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bool walkToDeclPre(Decl *D) override;
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bool walkToDeclPost(Decl *D) override;
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bool walkToTypeReprPre(TypeRepr *T) override;
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bool shouldWalkIntoGenericParams() override { return true; }
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private:
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static bool findUrlStartingLoc(StringRef Text, unsigned &Start,
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std::regex& Regex);
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bool annotateIfConfigConditionIdentifiers(Expr *Cond);
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bool handleAttrs(const DeclAttributes &Attrs);
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bool handleAttrs(const TypeAttributes &Attrs);
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using DeclAttributeAndRange = std::pair<const DeclAttribute *, SourceRange>;
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bool handleSpecialDeclAttribute(const DeclAttribute *Decl,
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ArrayRef<Token> Toks);
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bool handleAttrRanges(ArrayRef<DeclAttributeAndRange> DeclRanges);
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bool shouldPassBraceStructureNode(BraceStmt *S);
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enum PassNodesBehavior {
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/// Pass all nodes up to but not including the location.
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ExcludeNodeAtLocation,
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/// Pass all nodes up to and including the location.
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IncludeNodeAtLocation,
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/// Like ExcludeNodeAtLocation, and skip past any node at the location.
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DisplaceNodeAtLocation
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};
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bool passTokenNodesUntil(SourceLoc Loc, PassNodesBehavior Behavior);
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bool passNonTokenNode(const SyntaxNode &Node);
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bool passNode(const SyntaxNode &Node);
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bool pushStructureNode(const SyntaxStructureNode &Node,
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const ASTNodeType& ASTNode);
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bool popStructureNode();
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bool isCurrentCallArgExpr(const Expr *E);
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bool processComment(CharSourceRange Range);
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bool searchForURL(CharSourceRange Range);
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bool findFieldsInDocCommentLine(SyntaxNode Node);
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bool findFieldsInDocCommentBlock(SyntaxNode Node);
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bool isVisitedBefore(ASTNode Node) {
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return NodesVisitedBefore.count(Node) > 0;
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}
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};
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const std::regex &ModelASTWalker::getURLRegex(StringRef Pro) {
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static const std::regex Regexes[3] = {
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std::regex{ RegexStrURL, std::regex::ECMAScript | std::regex::nosubs },
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std::regex{ RegexStrMailURL, std::regex::ECMAScript | std::regex::nosubs },
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std::regex{ RegexStrRadarURL, std::regex::ECMAScript | std::regex::nosubs }
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};
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static const auto MailToPosition = std::find(URLProtocols.begin(),
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URLProtocols.end(),
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"mailto");
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static const auto RadarPosition = std::find(URLProtocols.begin(),
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URLProtocols.end(),
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"radar");
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auto Found = std::find(URLProtocols.begin(), URLProtocols.end(), Pro);
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assert(Found != URLProtocols.end() && "bad protocol name");
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if (Found < MailToPosition)
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return Regexes[0];
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else if (Found < RadarPosition)
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return Regexes[1];
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else
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return Regexes[2];
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}
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SyntaxStructureKind syntaxStructureKindFromNominalTypeDecl(NominalTypeDecl *N) {
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if (isa<ClassDecl>(N))
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return SyntaxStructureKind::Class;
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else if (isa<StructDecl>(N))
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return SyntaxStructureKind::Struct;
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else if (isa<ProtocolDecl>(N))
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return SyntaxStructureKind::Protocol;
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else {
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// All other known NominalTypeDecl derived classes covered, so assert() here.
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assert(isa<EnumDecl>(N));
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return SyntaxStructureKind::Enum;
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}
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}
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CharSourceRange charSourceRangeFromSourceRange(const SourceManager &SM,
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const SourceRange &SR) {
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return Lexer::getCharSourceRangeFromSourceRange(SM, SR);
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}
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CharSourceRange innerCharSourceRangeFromSourceRange(const SourceManager &SM,
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const SourceRange &SR) {
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if (SR.isInvalid())
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return CharSourceRange();
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SourceLoc SRS = Lexer::getLocForEndOfToken(SM, SR.Start);
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return CharSourceRange(SM, SRS, (SR.End != SR.Start) ? SR.End : SRS);
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}
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CharSourceRange parameterNameRangeOfCallArg(const TupleExpr *TE,
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const Expr *Arg) {
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if (!TE->hasElementNameLocs() || !TE->hasElementNames())
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return CharSourceRange();
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// Loop over the elements to find the index representing Arg.
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// This is somewhat inefficient but the only way to find the corresponding
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// name without the index, and the number of parameters in a call is normally
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// very low. If this becomes a performance problem, we could perhaps have
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// ASTWalker visit the element name as well.
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unsigned i = 0;
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for (auto E : TE->getElements()) {
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if (E == Arg) {
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SourceLoc NL = TE->getElementNameLoc(i);
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Identifier Name = TE->getElementName(i);
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if (NL.isValid() && !Name.empty())
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return CharSourceRange(NL, Name.getLength());
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return CharSourceRange();
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}
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++i;
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}
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return CharSourceRange();
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}
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static void setDecl(SyntaxStructureNode &N, Decl *D) {
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N.Dcl = D;
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N.Attrs = D->getAttrs();
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N.DocRange = D->getRawComment().getCharSourceRange();
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}
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} // anonymous namespace
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bool SyntaxModelContext::walk(SyntaxModelWalker &Walker) {
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ModelASTWalker ASTWalk(Impl.SrcFile, Walker);
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ASTWalk.visitSourceFile(Impl.SrcFile, Impl.TokenNodes);
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return true;
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}
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void ModelASTWalker::visitSourceFile(SourceFile &SrcFile,
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ArrayRef<SyntaxNode> Tokens) {
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TokenNodes = Tokens;
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SrcFile.walk(*this);
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// Pass the rest of the token nodes.
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for (auto &TokNode : TokenNodes)
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passNode(TokNode);
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}
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std::pair<bool, Expr *> ModelASTWalker::walkToExprPre(Expr *E) {
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if (isVisitedBefore(E))
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return {false, E};
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auto addCallArgExpr = [&](Expr *Elem, TupleExpr *ParentTupleExpr) {
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if (isCurrentCallArgExpr(ParentTupleExpr)) {
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CharSourceRange NR = parameterNameRangeOfCallArg(ParentTupleExpr, Elem);
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SyntaxStructureNode SN;
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SN.Kind = SyntaxStructureKind::Argument;
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SN.NameRange = NR;
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SN.BodyRange = charSourceRangeFromSourceRange(SM, Elem->getSourceRange());
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if (NR.isValid()) {
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SN.Range = charSourceRangeFromSourceRange(SM, SourceRange(NR.getStart(),
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Elem->getEndLoc()));
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passTokenNodesUntil(NR.getStart(),
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PassNodesBehavior::ExcludeNodeAtLocation);
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}
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else
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SN.Range = SN.BodyRange;
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pushStructureNode(SN, Elem);
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}
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};
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if (auto *ParentTupleExpr = dyn_cast_or_null<TupleExpr>(Parent.getAsExpr())) {
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// the argument value is a tuple expression already, we can just extract it
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addCallArgExpr(E, ParentTupleExpr);
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} else if (auto *ParentOptionalExpr = dyn_cast_or_null<OptionalEvaluationExpr>(Parent.getAsExpr())) {
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// if an argument value is an optional expression, we should extract the
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// argument from the subexpression
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if (auto *ParentTupleExpr = dyn_cast_or_null<TupleExpr>(ParentOptionalExpr->getSubExpr())) {
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addCallArgExpr(E, ParentTupleExpr);
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}
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}
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if (E->isImplicit())
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return { true, E };
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auto addExprElem = [&](const Expr *Elem, SyntaxStructureNode &SN) {
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if (isa<ErrorExpr>(Elem))
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return;
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SourceRange R = Elem->getSourceRange();
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if (R.isInvalid())
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return;
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SN.Elements.emplace_back(SyntaxStructureElementKind::Expr,
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charSourceRangeFromSourceRange(SM, R));
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};
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if (auto *CE = dyn_cast<CallExpr>(E)) {
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SyntaxStructureNode SN;
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SN.Kind = SyntaxStructureKind::CallExpression;
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SN.Range = charSourceRangeFromSourceRange(SM, E->getSourceRange());
|
|
if (CE->getFn() && CE->getFn()->getSourceRange().isValid())
|
|
SN.NameRange = charSourceRangeFromSourceRange(SM,
|
|
CE->getFn()->getSourceRange());
|
|
if (CE->getArg() && CE->getArg()->getSourceRange().isValid())
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM,
|
|
CE->getArg()->getSourceRange());
|
|
pushStructureNode(SN, CE);
|
|
|
|
} else if (auto *ObjectE = dyn_cast<ObjectLiteralExpr>(E)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::ObjectLiteralExpression;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, ObjectE->getSourceRange());
|
|
SourceLoc NRStart = ObjectE->getSourceLoc().getAdvancedLoc(1);
|
|
SourceLoc NREnd =
|
|
NRStart.getAdvancedLoc(ObjectE->getLiteralKindRawName().size());
|
|
SN.NameRange = CharSourceRange(SM, NRStart, NREnd);
|
|
SN.BodyRange =
|
|
innerCharSourceRangeFromSourceRange(SM, ObjectE->getSourceRange());
|
|
// Consider the object literal as a single syntax token for highlighting.
|
|
passNonTokenNode({SyntaxNodeKind::ObjectLiteral, SN.Range});
|
|
pushStructureNode(SN, E);
|
|
} else if (auto *ArrayE = dyn_cast<ArrayExpr>(E)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::ArrayExpression;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, E->getSourceRange());
|
|
for (auto *Elem : ArrayE->getElements())
|
|
addExprElem(Elem, SN);
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM, E->getSourceRange());
|
|
pushStructureNode(SN, E);
|
|
|
|
} else if (auto *DictE = dyn_cast<DictionaryExpr>(E)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::DictionaryExpression;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, E->getSourceRange());
|
|
for (auto *Elem : DictE->getElements()) {
|
|
if (auto *TupleE = dyn_cast<TupleExpr>(Elem)) {
|
|
for (auto *TE : TupleE->getElements())
|
|
addExprElem(TE, SN);
|
|
} else {
|
|
addExprElem(Elem, SN);
|
|
}
|
|
}
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM, E->getSourceRange());
|
|
pushStructureNode(SN, E);
|
|
} else if (auto *Tup = dyn_cast<TupleExpr>(E)) {
|
|
if (isCurrentCallArgExpr(Tup)) {
|
|
for (unsigned I = 0; I < Tup->getNumElements(); ++ I) {
|
|
SourceLoc NameLoc = Tup->getElementNameLoc(I);
|
|
if (NameLoc.isValid())
|
|
passTokenNodesUntil(NameLoc, PassNodesBehavior::ExcludeNodeAtLocation);
|
|
}
|
|
} else {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::TupleExpression;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, Tup->getSourceRange());
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM,
|
|
Tup->getSourceRange());
|
|
|
|
for (auto *Elem : Tup->getElements()) {
|
|
addExprElem(Elem, SN);
|
|
}
|
|
|
|
pushStructureNode(SN, Tup);
|
|
}
|
|
} else if (auto *Closure = dyn_cast<ClosureExpr>(E)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::ClosureExpression;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, E->getSourceRange());
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM, E->getSourceRange());
|
|
if (Closure->hasExplicitResultType())
|
|
SN.TypeRange = charSourceRangeFromSourceRange(SM,
|
|
Closure->getExplicitResultTypeLoc().getSourceRange());
|
|
|
|
pushStructureNode(SN, Closure);
|
|
} else if (auto SE = dyn_cast<SequenceExpr>(E)) {
|
|
// In SequenceExpr, explicit cast expressions (e.g. 'as', 'is') appear
|
|
// twice. Skip pointers we've already seen.
|
|
SmallPtrSet<Expr *, 5> seenExpr;
|
|
for (auto subExpr : SE->getElements()) {
|
|
if (!seenExpr.insert(subExpr).second) {
|
|
continue;
|
|
}
|
|
llvm::SaveAndRestore<ASTWalker::ParentTy> SetParent(Parent, E);
|
|
subExpr->walk(*this);
|
|
}
|
|
return { false, walkToExprPost(SE) };
|
|
}
|
|
|
|
return { true, E };
|
|
}
|
|
|
|
Expr *ModelASTWalker::walkToExprPost(Expr *E) {
|
|
while (!SubStructureStack.empty() &&
|
|
SubStructureStack.back().ASTNode.getAsExpr() == E)
|
|
popStructureNode();
|
|
|
|
return E;
|
|
}
|
|
|
|
std::pair<bool, Stmt *> ModelASTWalker::walkToStmtPre(Stmt *S) {
|
|
if (isVisitedBefore(S)) {
|
|
return {false, S};
|
|
}
|
|
auto addExprElem = [&](SyntaxStructureElementKind K, const Expr *Elem,
|
|
SyntaxStructureNode &SN) {
|
|
if (isa<ErrorExpr>(Elem))
|
|
return;
|
|
SourceRange R = Elem->getSourceRange();
|
|
if (R.isInvalid())
|
|
return;
|
|
SN.Elements.emplace_back(K, charSourceRangeFromSourceRange(SM, R));
|
|
};
|
|
|
|
if (auto *ForEachS = dyn_cast<ForEachStmt>(S)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::ForEachStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
if (ForEachS->getPattern()) {
|
|
auto Pat = ForEachS->getPattern();
|
|
if (!Pat->isImplicit()) {
|
|
SourceRange ElemRange = Pat->getSourceRange();
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::Id,
|
|
charSourceRangeFromSourceRange(SM, ElemRange));
|
|
}
|
|
}
|
|
if (ForEachS->getSequence())
|
|
addExprElem(SyntaxStructureElementKind::Expr, ForEachS->getSequence(),SN);
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (auto *WhileS = dyn_cast<WhileStmt>(S)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::WhileStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
if (!WhileS->getCond().empty()) {
|
|
auto Conds = WhileS->getCond();
|
|
SourceRange ElemRange = SourceRange(Conds.front().getSourceRange().Start,
|
|
Conds.back().getSourceRange().End);
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::ConditionExpr,
|
|
charSourceRangeFromSourceRange(SM, ElemRange));
|
|
}
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (auto *RepeatWhileS = dyn_cast<RepeatWhileStmt>(S)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::RepeatWhileStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
if (RepeatWhileS->getCond()) {
|
|
addExprElem(SyntaxStructureElementKind::Expr, RepeatWhileS->getCond(), SN);
|
|
}
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (auto *IfS = dyn_cast<IfStmt>(S)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::IfStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
if (!IfS->getCond().empty()) {
|
|
auto Conds = IfS->getCond();
|
|
SourceRange ElemRange = SourceRange(Conds.front().getSourceRange().Start,
|
|
Conds.back().getSourceRange().End);
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::ConditionExpr,
|
|
charSourceRangeFromSourceRange(SM, ElemRange));
|
|
}
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (auto *GS = dyn_cast<GuardStmt>(S)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::GuardStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
if (!GS->getCond().empty()) {
|
|
auto Conds = GS->getCond();
|
|
SourceRange ElemRange = SourceRange(Conds.front().getSourceRange().Start,
|
|
Conds.back().getSourceRange().End);
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::ConditionExpr,
|
|
charSourceRangeFromSourceRange(SM, ElemRange));
|
|
}
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (auto *SwitchS = dyn_cast<SwitchStmt>(S)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::SwitchStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
if (SwitchS->getSubjectExpr()) {
|
|
addExprElem(SyntaxStructureElementKind::Expr, SwitchS->getSubjectExpr(),
|
|
SN);
|
|
}
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (auto *CaseS = dyn_cast<CaseStmt>(S)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::CaseStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
for (const CaseLabelItem &Item : CaseS->getCaseLabelItems()) {
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::Pattern,
|
|
charSourceRangeFromSourceRange(SM,
|
|
Item.getSourceRange()));
|
|
}
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (isa<BraceStmt>(S) && shouldPassBraceStructureNode(cast<BraceStmt>(S))) {
|
|
// Pass BraceStatement structure node.
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::BraceStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, S->getSourceRange());
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM,
|
|
S->getSourceRange());
|
|
pushStructureNode(SN, S);
|
|
|
|
} else if (auto *SW = dyn_cast<SwitchStmt>(S)) {
|
|
if (SW->getLBraceLoc().isValid() && SW->getRBraceLoc().isValid()) {
|
|
SourceRange BraceRange(SW->getLBraceLoc(), SW->getRBraceLoc());
|
|
SyntaxStructureNode SN;
|
|
SN.Kind = SyntaxStructureKind::BraceStatement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, BraceRange);
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM, BraceRange);
|
|
pushStructureNode(SN, SW);
|
|
}
|
|
|
|
} else if (auto *DeferS = dyn_cast<DeferStmt>(S)) {
|
|
// Since 'DeferStmt::getTempDecl()' is marked as implicit, we manually walk
|
|
// into the body.
|
|
if (auto *FD = DeferS->getTempDecl()) {
|
|
auto *RetS = FD->getBody()->walk(*this);
|
|
assert(RetS == FD->getBody());
|
|
(void)RetS;
|
|
walkToStmtPost(DeferS);
|
|
}
|
|
// Already walked children.
|
|
return { false, DeferS };
|
|
}
|
|
|
|
return { true, S };
|
|
}
|
|
|
|
Stmt *ModelASTWalker::walkToStmtPost(Stmt *S) {
|
|
while (!SubStructureStack.empty() &&
|
|
SubStructureStack.back().ASTNode.getAsStmt() == S)
|
|
popStructureNode();
|
|
|
|
return S;
|
|
}
|
|
|
|
bool ModelASTWalker::walkToDeclPre(Decl *D) {
|
|
if (isVisitedBefore(D))
|
|
return false;
|
|
if (D->isImplicit())
|
|
return false;
|
|
|
|
if (!handleAttrs(D->getAttrs()))
|
|
return false;
|
|
|
|
if (isa<AccessorDecl>(D)) {
|
|
// Don't push structure nodes for accessors.
|
|
} else if (auto *AFD = dyn_cast<AbstractFunctionDecl>(D)) {
|
|
// Pass Function / Method structure node.
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
const DeclContext *DC = AFD->getDeclContext();
|
|
auto *FD = dyn_cast<FuncDecl>(AFD);
|
|
if (DC->isTypeContext()) {
|
|
if (FD && FD->isStatic()) {
|
|
if (FD->getStaticSpelling() == StaticSpellingKind::KeywordClass)
|
|
SN.Kind = SyntaxStructureKind::ClassFunction;
|
|
else
|
|
SN.Kind = SyntaxStructureKind::StaticFunction;
|
|
} else {
|
|
SN.Kind = SyntaxStructureKind::InstanceFunction;
|
|
}
|
|
}
|
|
else
|
|
SN.Kind = SyntaxStructureKind::FreeFunction;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, AFD->getSourceRange());
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM,
|
|
AFD->getBodySourceRange());
|
|
SN.NameRange = charSourceRangeFromSourceRange(SM,
|
|
AFD->getSignatureSourceRange());
|
|
if (FD) {
|
|
SN.TypeRange = charSourceRangeFromSourceRange(SM,
|
|
FD->getBodyResultTypeLoc().getSourceRange());
|
|
}
|
|
pushStructureNode(SN, AFD);
|
|
} else if (auto *NTD = dyn_cast<NominalTypeDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SN.Kind = syntaxStructureKindFromNominalTypeDecl(NTD);
|
|
SN.Range = charSourceRangeFromSourceRange(SM, NTD->getSourceRange());
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM, NTD->getBraces());
|
|
SourceLoc NRStart = NTD->getNameLoc();
|
|
SourceLoc NREnd = NRStart.getAdvancedLoc(NTD->getName().getLength());
|
|
SN.NameRange = CharSourceRange(SM, NRStart, NREnd);
|
|
|
|
for (const TypeLoc &TL : NTD->getInherited()) {
|
|
CharSourceRange TR = charSourceRangeFromSourceRange(SM,
|
|
TL.getSourceRange());
|
|
SN.InheritedTypeRanges.push_back(TR);
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::TypeRef, TR);
|
|
}
|
|
|
|
pushStructureNode(SN, NTD);
|
|
|
|
} else if (auto *ED = dyn_cast<ExtensionDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SN.Kind = SyntaxStructureKind::Extension;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, ED->getSourceRange());
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM, ED->getBraces());
|
|
SourceRange NSR = ED->getExtendedTypeLoc().getSourceRange();
|
|
SN.NameRange = charSourceRangeFromSourceRange(SM, NSR);
|
|
|
|
for (const TypeLoc &TL : ED->getInherited()) {
|
|
CharSourceRange TR = charSourceRangeFromSourceRange(SM,
|
|
TL.getSourceRange());
|
|
SN.InheritedTypeRanges.push_back(TR);
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::TypeRef, TR);
|
|
}
|
|
|
|
pushStructureNode(SN, ED);
|
|
|
|
} else if (auto *PD = dyn_cast<ParamDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
SN.Dcl = D;
|
|
SN.Kind = SyntaxStructureKind::Parameter;
|
|
if (!PD->getArgumentName().empty()) {
|
|
SourceLoc ArgStart = PD->getSourceRange().Start;
|
|
SN.NameRange = CharSourceRange(ArgStart, PD->getArgumentName().getLength());
|
|
passTokenNodesUntil(ArgStart, PassNodesBehavior::ExcludeNodeAtLocation);
|
|
}
|
|
SN.Range = charSourceRangeFromSourceRange(SM, PD->getSourceRange());
|
|
SN.Attrs = PD->getAttrs();
|
|
SN.TypeRange = charSourceRangeFromSourceRange(SM,
|
|
PD->getTypeSourceRangeForDiagnostics());
|
|
pushStructureNode(SN, PD);
|
|
} else if (auto *VD = dyn_cast<VarDecl>(D)) {
|
|
const DeclContext *DC = VD->getDeclContext();
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SourceRange SR;
|
|
if (auto *PBD = VD->getParentPatternBinding())
|
|
SR = PBD->getSourceRange();
|
|
else
|
|
SR = VD->getSourceRange();
|
|
SN.Range = charSourceRangeFromSourceRange(SM, SR);
|
|
auto bracesRange = VD->getBracesRange();
|
|
if (bracesRange.isValid())
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM, bracesRange);
|
|
SourceLoc NRStart = VD->getNameLoc();
|
|
SourceLoc NREnd = NRStart.getAdvancedLoc(VD->getName().getLength());
|
|
SN.NameRange = CharSourceRange(SM, NRStart, NREnd);
|
|
SN.TypeRange = charSourceRangeFromSourceRange(SM,
|
|
VD->getTypeSourceRangeForDiagnostics());
|
|
|
|
if (DC->isLocalContext()) {
|
|
SN.Kind = SyntaxStructureKind::LocalVariable;
|
|
} else if (DC->isTypeContext()) {
|
|
if (VD->isStatic()) {
|
|
StaticSpellingKind Spell = StaticSpellingKind::KeywordStatic;
|
|
if (auto *PBD = VD->getParentPatternBinding())
|
|
Spell = PBD->getStaticSpelling();
|
|
if (Spell == StaticSpellingKind::KeywordClass)
|
|
SN.Kind = SyntaxStructureKind::ClassVariable;
|
|
else
|
|
SN.Kind = SyntaxStructureKind::StaticVariable;
|
|
} else {
|
|
SN.Kind = SyntaxStructureKind::InstanceVariable;
|
|
}
|
|
} else {
|
|
SN.Kind = SyntaxStructureKind::GlobalVariable;
|
|
}
|
|
pushStructureNode(SN, VD);
|
|
|
|
} else if (auto *ConfigD = dyn_cast<IfConfigDecl>(D)) {
|
|
for (auto &Clause : ConfigD->getClauses()) {
|
|
if (Clause.Cond && !annotateIfConfigConditionIdentifiers(Clause.Cond))
|
|
return false;
|
|
|
|
for (auto &Element : Clause.Elements) {
|
|
if (auto *E = Element.dyn_cast<Expr*>()) {
|
|
E->walk(*this);
|
|
} else if (auto *S = Element.dyn_cast<Stmt*>()) {
|
|
S->walk(*this);
|
|
} else {
|
|
Element.get<Decl*>()->walk(*this);
|
|
}
|
|
NodesVisitedBefore.insert(Element);
|
|
}
|
|
}
|
|
|
|
} else if (auto *EnumCaseD = dyn_cast<EnumCaseDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SN.Kind = SyntaxStructureKind::EnumCase;
|
|
SN.Range = charSourceRangeFromSourceRange(SM, D->getSourceRange());
|
|
|
|
// We need to handle the special case where attributes semantically
|
|
// attach to enum element decls while syntactically locate before enum case decl.
|
|
for (auto *EnumElemD : EnumCaseD->getElements()) {
|
|
for (auto *Att : EnumElemD->getAttrs()) {
|
|
if (Att->isDeclModifier() &&
|
|
SM.isBeforeInBuffer(Att->getLocation(), D->getSourceRange().Start)) {
|
|
passNonTokenNode({SyntaxNodeKind::AttributeBuiltin,
|
|
charSourceRangeFromSourceRange(SM,
|
|
Att->getLocation())});
|
|
}
|
|
}
|
|
}
|
|
if (pushStructureNode(SN, D)) {
|
|
// FIXME: ASTWalker walks enum elements as members of the enum decl, not
|
|
// as members of the enum case decl. Walk them manually here so that they
|
|
// end up as child nodes of enum case.
|
|
for (auto *EnumElemD : EnumCaseD->getElements()) {
|
|
if (EnumElemD->getName().empty())
|
|
continue;
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, EnumElemD);
|
|
SN.Kind = SyntaxStructureKind::EnumElement;
|
|
SN.Range = charSourceRangeFromSourceRange(SM,
|
|
EnumElemD->getSourceRange());
|
|
if (auto ParamList = EnumElemD->getParameterList()) {
|
|
SourceRange NameRange = SourceRange(EnumElemD->getNameLoc(),
|
|
ParamList->getSourceRange().End);
|
|
SN.NameRange = charSourceRangeFromSourceRange(SM, NameRange);
|
|
} else {
|
|
SN.NameRange = CharSourceRange(EnumElemD->getNameLoc(),
|
|
EnumElemD->getName().getLength());
|
|
}
|
|
|
|
if (auto *E = EnumElemD->getRawValueExpr()) {
|
|
SourceRange ElemRange = E->getSourceRange();
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::InitExpr,
|
|
charSourceRangeFromSourceRange(SM, ElemRange));
|
|
}
|
|
pushStructureNode(SN, EnumElemD);
|
|
EnumElemD->walk(*this);
|
|
NodesVisitedBefore.insert(EnumElemD);
|
|
}
|
|
}
|
|
} else if (auto *TypeAliasD = dyn_cast<TypeAliasDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SN.Kind = SyntaxStructureKind::TypeAlias;
|
|
SN.Range = charSourceRangeFromSourceRange(SM,
|
|
TypeAliasD->getSourceRange());
|
|
SN.NameRange = CharSourceRange(TypeAliasD->getNameLoc(),
|
|
TypeAliasD->getName().getLength());
|
|
pushStructureNode(SN, TypeAliasD);
|
|
} else if (auto *SubscriptD = dyn_cast<SubscriptDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SN.Kind = SyntaxStructureKind::Subscript;
|
|
SN.Range = charSourceRangeFromSourceRange(SM,
|
|
SubscriptD->getSourceRange());
|
|
SN.BodyRange = innerCharSourceRangeFromSourceRange(SM,
|
|
SubscriptD->getBracesRange());
|
|
SN.NameRange = charSourceRangeFromSourceRange(SM,
|
|
SubscriptD->getSignatureSourceRange());
|
|
SN.TypeRange = charSourceRangeFromSourceRange(SM,
|
|
SubscriptD->getElementTypeLoc().getSourceRange());
|
|
pushStructureNode(SN, SubscriptD);
|
|
} else if (auto *AssociatedTypeD = dyn_cast<AssociatedTypeDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SN.Kind = SyntaxStructureKind::AssociatedType;
|
|
SN.Range = charSourceRangeFromSourceRange(SM,
|
|
AssociatedTypeD->getSourceRange());
|
|
SN.NameRange = CharSourceRange(AssociatedTypeD->getNameLoc(),
|
|
AssociatedTypeD->getName().getLength());
|
|
pushStructureNode(SN, AssociatedTypeD);
|
|
} else if (auto *GenericParamD = dyn_cast<GenericTypeParamDecl>(D)) {
|
|
SyntaxStructureNode SN;
|
|
setDecl(SN, D);
|
|
SN.Kind = SyntaxStructureKind::GenericTypeParam;
|
|
SN.Range = charSourceRangeFromSourceRange(SM,
|
|
GenericParamD->getSourceRange());
|
|
SN.NameRange = CharSourceRange(GenericParamD->getNameLoc(),
|
|
GenericParamD->getName().getLength());
|
|
for (const TypeLoc &TL : GenericParamD->getInherited()) {
|
|
CharSourceRange TR = charSourceRangeFromSourceRange(SM,
|
|
TL.getSourceRange());
|
|
SN.InheritedTypeRanges.push_back(TR);
|
|
SN.Elements.emplace_back(SyntaxStructureElementKind::TypeRef, TR);
|
|
}
|
|
|
|
pushStructureNode(SN, GenericParamD);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::walkToDeclPost(swift::Decl *D) {
|
|
while (!SubStructureStack.empty() &&
|
|
SubStructureStack.back().ASTNode.getAsDecl() == D)
|
|
popStructureNode();
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::walkToTypeReprPre(TypeRepr *T) {
|
|
if (auto AttrT = dyn_cast<AttributedTypeRepr>(T)) {
|
|
if (!handleAttrs(AttrT->getAttrs()))
|
|
return false;
|
|
|
|
} else if (auto IdT = dyn_cast<ComponentIdentTypeRepr>(T)) {
|
|
if (!passTokenNodesUntil(IdT->getIdLoc(), ExcludeNodeAtLocation))
|
|
return false;
|
|
if (TokenNodes.empty() ||
|
|
TokenNodes.front().Range.getStart() != IdT->getIdLoc())
|
|
return false;
|
|
if (!passNode({SyntaxNodeKind::TypeId, TokenNodes.front().Range}))
|
|
return false;
|
|
TokenNodes = TokenNodes.slice(1);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
namespace {
|
|
template <typename FnTy>
|
|
class IdRefWalker : public ASTWalker {
|
|
const FnTy &Fn;
|
|
|
|
public:
|
|
IdRefWalker(const FnTy &Fn) : Fn(Fn) {}
|
|
|
|
std::pair<bool, Expr *> walkToExprPre(Expr *E) override {
|
|
if (auto DRE = dyn_cast<UnresolvedDeclRefExpr>(E)) {
|
|
if (!DRE->hasName())
|
|
return { true, E };
|
|
if (DRE->getRefKind() != DeclRefKind::Ordinary)
|
|
return { true, E };
|
|
if (!Fn(CharSourceRange(
|
|
DRE->getSourceRange().Start,
|
|
DRE->getName().getBaseName().userFacingName().size())))
|
|
return { false, nullptr };
|
|
}
|
|
return { true, E };
|
|
}
|
|
};
|
|
} // end anonymous namespace
|
|
|
|
bool ModelASTWalker::annotateIfConfigConditionIdentifiers(Expr *Cond) {
|
|
if (!Cond)
|
|
return true;
|
|
auto passNode = [&](CharSourceRange R) {
|
|
return passNonTokenNode({ SyntaxNodeKind::BuildConfigId, R });
|
|
};
|
|
|
|
IdRefWalker<decltype(passNode)> Walker(passNode);
|
|
return Cond->walk(Walker);
|
|
}
|
|
|
|
bool ModelASTWalker::handleSpecialDeclAttribute(const DeclAttribute *D,
|
|
ArrayRef<Token> Toks) {
|
|
if (!D)
|
|
return false;
|
|
if (isa<CustomAttr>(D) || isa<AvailableAttr>(D)) {
|
|
if (!passTokenNodesUntil(D->getRangeWithAt().Start,
|
|
PassNodesBehavior::ExcludeNodeAtLocation))
|
|
return false;
|
|
if (auto *CA = dyn_cast<CustomAttr>(D)) {
|
|
if (auto *Repr = CA->getTypeLoc().getTypeRepr()) {
|
|
if (!Repr->walk(*this))
|
|
return false;
|
|
}
|
|
if (auto *Arg = CA->getArg()) {
|
|
if (!Arg->walk(*this))
|
|
return false;
|
|
}
|
|
} else if (!TokenNodes.empty()) {
|
|
auto Next = TokenNodes.front();
|
|
if (Next.Range.getStart() == D->getRangeWithAt().Start) {
|
|
TokenNodes = TokenNodes.drop_front();
|
|
if (!passNode({SyntaxNodeKind::AttributeBuiltin, Next.Range}))
|
|
return false;
|
|
} else {
|
|
assert(0 && "Attribute's TokenNodes already consumed?");
|
|
}
|
|
} else {
|
|
assert(0 && "No TokenNodes?");
|
|
}
|
|
if (!passTokenNodesUntil(D->getRange().End, PassNodesBehavior::IncludeNodeAtLocation))
|
|
return false;
|
|
return true;
|
|
}
|
|
if (isa<RethrowsAttr>(D))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
bool ModelASTWalker::handleAttrs(const DeclAttributes &Attrs) {
|
|
SmallVector<DeclAttributeAndRange, 4> DeclRanges;
|
|
for (auto At : Attrs) {
|
|
if (At->getRangeWithAt().isValid())
|
|
DeclRanges.push_back(std::make_pair(At, At->getRangeWithAt()));
|
|
}
|
|
return handleAttrRanges(DeclRanges);
|
|
}
|
|
|
|
bool ModelASTWalker::handleAttrs(const TypeAttributes &Attrs) {
|
|
SmallVector<SourceRange, 4> Ranges;
|
|
Attrs.getAttrRanges(Ranges);
|
|
SmallVector<DeclAttributeAndRange, 4> DeclRanges;
|
|
for (auto R : Ranges) {
|
|
DeclRanges.push_back(std::make_pair(nullptr, R));
|
|
}
|
|
return handleAttrRanges(DeclRanges);
|
|
}
|
|
|
|
bool ModelASTWalker::handleAttrRanges(ArrayRef<DeclAttributeAndRange> DeclRanges) {
|
|
if (DeclRanges.empty())
|
|
return true;
|
|
|
|
SmallVector<DeclAttributeAndRange, 4> SortedRanges(DeclRanges.begin(),
|
|
DeclRanges.end());
|
|
std::sort(
|
|
SortedRanges.begin(), SortedRanges.end(),
|
|
[&](DeclAttributeAndRange LHS, DeclAttributeAndRange RHS) {
|
|
// Since attributes don't overlap it's safe to compare just by the
|
|
// range's Start
|
|
return SM.isBeforeInBuffer(LHS.second.Start, RHS.second.Start);
|
|
});
|
|
// Handle duplicate synthesized attributes due to * in @available
|
|
auto NewEnd = std::unique(SortedRanges.begin(), SortedRanges.end(),
|
|
[&](DeclAttributeAndRange LHS, DeclAttributeAndRange RHS) {
|
|
return LHS.second == RHS.second;
|
|
});
|
|
if (NewEnd != SortedRanges.end())
|
|
SortedRanges.erase(NewEnd, SortedRanges.end());
|
|
DeclRanges = SortedRanges;
|
|
|
|
SourceLoc BeginLoc = DeclRanges.front().second.Start;
|
|
|
|
auto Toks = slice_token_array(AllTokensInFile, BeginLoc,
|
|
DeclRanges.back().second.End);
|
|
|
|
auto passAttrNode = [&](SourceRange AttrRange) -> bool {
|
|
SourceRange Range = AttrRange;
|
|
if (!passNonTokenNode({SyntaxNodeKind::AttributeBuiltin,
|
|
charSourceRangeFromSourceRange(SM, Range)}))
|
|
return false;
|
|
|
|
while (!TokenNodes.empty() &&
|
|
SM.rangeContainsTokenLoc(AttrRange,
|
|
TokenNodes.front().Range.getStart()))
|
|
TokenNodes = TokenNodes.slice(1);
|
|
return true;
|
|
};
|
|
|
|
for (auto Tok : Toks) {
|
|
if (DeclRanges.empty())
|
|
break;
|
|
if (Tok.getLoc() == DeclRanges.front().second.Start) {
|
|
auto R = DeclRanges.front().second;
|
|
auto D = DeclRanges.front().first;
|
|
DeclRanges = DeclRanges.slice(1);
|
|
if (!handleSpecialDeclAttribute(D, Toks)) {
|
|
if (!passAttrNode(R))
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!DeclRanges.empty() &&
|
|
!handleSpecialDeclAttribute(DeclRanges.front().first, Toks)) {
|
|
if (!passAttrNode(DeclRanges.front().second))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::shouldPassBraceStructureNode(BraceStmt *S) {
|
|
return (!dyn_cast_or_null<AbstractFunctionDecl>(Parent.getAsDecl()) &&
|
|
!dyn_cast_or_null<TopLevelCodeDecl>(Parent.getAsDecl()) &&
|
|
!dyn_cast_or_null<CaseStmt>(Parent.getAsStmt()) &&
|
|
S->getSourceRange().isValid());
|
|
}
|
|
|
|
bool ModelASTWalker::passTokenNodesUntil(SourceLoc Loc,
|
|
PassNodesBehavior Behavior) {
|
|
assert(Loc.isValid());
|
|
unsigned I = 0;
|
|
for (unsigned E = TokenNodes.size(); I != E; ++I) {
|
|
SourceLoc TokLoc = TokenNodes[I].Range.getStart();
|
|
if (SM.isBeforeInBuffer(Loc, TokLoc)) {
|
|
break;
|
|
}
|
|
if (TokLoc == Loc && Behavior != IncludeNodeAtLocation) {
|
|
if (Behavior == DisplaceNodeAtLocation) {
|
|
// Skip past the node directly at the specified location, allowing the
|
|
// caller to effectively replace it.
|
|
++I;
|
|
}
|
|
break;
|
|
}
|
|
if (!AvoidPassingSyntaxToken) {
|
|
if (!passNode(TokenNodes[I]))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
TokenNodes = TokenNodes.slice(I);
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::passNonTokenNode(const SyntaxNode &Node) {
|
|
// Skip out of order non-token nodes.
|
|
// Ideally this shouldn't happen, but the AST can contain overlapping nodes,
|
|
// such as multiple PatternBindingDecl in code like: var a, b : Int. Which
|
|
// would cause us to report the TypeRepr twice.
|
|
if (!SM.isBeforeInBuffer(LastLoc, Node.Range.getStart()))
|
|
return true;
|
|
|
|
if (!passTokenNodesUntil(Node.Range.getStart(), DisplaceNodeAtLocation))
|
|
return false;
|
|
if (!passNode(Node))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::passNode(const SyntaxNode &Node) {
|
|
assert(!SM.isBeforeInBuffer(Node.Range.getStart(), LastLoc));
|
|
LastLoc = Node.Range.getStart();
|
|
|
|
bool ShouldWalkSubTree = Walker.walkToNodePre(Node);
|
|
|
|
if (ShouldWalkSubTree) {
|
|
if (Node.isComment()) {
|
|
if (!processComment(Node.Range))
|
|
return false;
|
|
} else if (Node.Kind == SyntaxNodeKind::DocCommentLine) {
|
|
if (!findFieldsInDocCommentLine(Node))
|
|
return false;
|
|
} else if (Node.Kind == SyntaxNodeKind::DocCommentBlock) {
|
|
if (!findFieldsInDocCommentBlock(Node))
|
|
return false;
|
|
} else if (Node.Kind == SyntaxNodeKind::CommentMarker) {
|
|
if (!searchForURL(Node.Range))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return Walker.walkToNodePost(Node);
|
|
}
|
|
|
|
static bool shouldAvoidPssingSyntaxToken(const SyntaxStructureNode &Node) {
|
|
return Node.Kind == SyntaxStructureKind::ObjectLiteralExpression;
|
|
}
|
|
|
|
bool ModelASTWalker::pushStructureNode(const SyntaxStructureNode &Node,
|
|
const ASTNodeType& ASTNode) {
|
|
SubStructureStack.emplace_back(Node, ASTNode);
|
|
if (shouldAvoidPssingSyntaxToken(Node))
|
|
AvoidPassingSyntaxToken ++;
|
|
|
|
if (!passTokenNodesUntil(Node.Range.getStart(), ExcludeNodeAtLocation))
|
|
return false;
|
|
if (!Walker.walkToSubStructurePre(Node))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::popStructureNode() {
|
|
assert(!SubStructureStack.empty());
|
|
SyntaxStructureNode Node = SubStructureStack.back().StructureNode;
|
|
SWIFT_DEFER {
|
|
if (shouldAvoidPssingSyntaxToken(Node)) {
|
|
assert(AvoidPassingSyntaxToken);
|
|
AvoidPassingSyntaxToken --;
|
|
}
|
|
};
|
|
SubStructureStack.pop_back();
|
|
|
|
// VarDecls are popped before we see their TypeRepr, so if we pass the token
|
|
// nodes now they will not change from identifier to a type-identifier.
|
|
if (!Node.hasSubstructure()) {
|
|
if (!passTokenNodesUntil(Node.Range.getEnd(), IncludeNodeAtLocation))
|
|
return false;
|
|
}
|
|
if (!Walker.walkToSubStructurePost(Node))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::isCurrentCallArgExpr(const Expr *E) {
|
|
if (SubStructureStack.empty())
|
|
return false;
|
|
auto Current = SubStructureStack.back();
|
|
|
|
if (Current.StructureNode.Kind ==
|
|
SyntaxStructureKind::ObjectLiteralExpression &&
|
|
cast<ObjectLiteralExpr>(Current.ASTNode.getAsExpr())->getArg() == E)
|
|
return true;
|
|
|
|
return Current.StructureNode.Kind == SyntaxStructureKind::CallExpression &&
|
|
cast<CallExpr>(Current.ASTNode.getAsExpr())->getArg() == E;
|
|
}
|
|
|
|
bool ModelASTWalker::processComment(CharSourceRange Range) {
|
|
StringRef Text = SM.extractText(Range, BufferID);
|
|
SourceLoc Loc = Range.getStart();
|
|
// Search for 'FIXME:' or 'TODO:'.
|
|
while (1) {
|
|
auto Pos = Text.find_first_of("FTM");
|
|
if (Pos == StringRef::npos)
|
|
return searchForURL(Range);
|
|
|
|
Text = Text.substr(Pos);
|
|
Loc = Loc.getAdvancedLoc(Pos);
|
|
if (Text.startswith("FIXME:") || Text.startswith("TODO:") ||
|
|
Text.startswith("MARK:"))
|
|
break;
|
|
Text = Text.substr(1);
|
|
Loc = Loc.getAdvancedLoc(1);
|
|
}
|
|
|
|
auto NewLinePos = Text.find_first_of("\r\n");
|
|
if (NewLinePos != StringRef::npos) {
|
|
Text = Text.substr(0, NewLinePos);
|
|
}
|
|
if (Text.endswith("*/")) {
|
|
Text = Text.drop_back(2);
|
|
}
|
|
Text = Text.rtrim();
|
|
|
|
CharSourceRange BeforeMarker{ SM, Range.getStart(), Loc };
|
|
CharSourceRange Marker(Loc, Text.size());
|
|
CharSourceRange AfterMarker{ SM, Marker.getEnd(), Range.getEnd() };
|
|
|
|
if (!searchForURL(BeforeMarker))
|
|
return false;
|
|
|
|
SyntaxNode Node{ SyntaxNodeKind::CommentMarker, Marker };
|
|
if (!passNode(Node))
|
|
return false;
|
|
|
|
return searchForURL(AfterMarker);
|
|
}
|
|
|
|
bool ModelASTWalker::findUrlStartingLoc(StringRef Text,
|
|
unsigned &Start,
|
|
std::regex &Regex) {
|
|
#ifdef SWIFT_HAVE_WORKING_STD_REGEX
|
|
static const auto MailToPosition = std::find(URLProtocols.begin(),
|
|
URLProtocols.end(),
|
|
"mailto");
|
|
auto Index = Text.find(":");
|
|
if (Index == StringRef::npos)
|
|
return false;
|
|
|
|
auto Lookback = [Text](unsigned Index, StringRef Name) {
|
|
return Index >= Name.size() &&
|
|
Text.substr(Index - Name.size(), Name.size()) == Name;
|
|
};
|
|
|
|
auto HasSlash = Text.substr(Index).startswith("://");
|
|
|
|
if (HasSlash) {
|
|
for (auto It = URLProtocols.begin(); It < URLProtocols.end(); ++ It) {
|
|
if (Lookback(Index, *It)) {
|
|
Regex = getURLRegex(*It);
|
|
Start = Index - It->size();
|
|
return true;
|
|
}
|
|
}
|
|
} else {
|
|
for (auto It = MailToPosition; It < URLProtocols.end(); ++ It) {
|
|
if (Lookback(Index, *It)) {
|
|
Regex = getURLRegex(*It);
|
|
Start = Index - It->size();
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
static CharSourceRange sanitizeUnpairedParenthesis(CharSourceRange Range) {
|
|
auto Text = Range.str();
|
|
if (Text.back() != ')') {
|
|
return Range;
|
|
}
|
|
unsigned Pairs = 0;
|
|
unsigned TrimLen = 0;
|
|
for (char C : Text) {
|
|
if (C == '(') {
|
|
Pairs ++;
|
|
} else if (C == ')') {
|
|
if (Pairs == 0)
|
|
TrimLen ++;
|
|
else
|
|
Pairs --;
|
|
} else {
|
|
TrimLen = 0;
|
|
}
|
|
}
|
|
|
|
return CharSourceRange(Range.getStart(), Text.size() - TrimLen);
|
|
}
|
|
|
|
bool ModelASTWalker::searchForURL(CharSourceRange Range) {
|
|
StringRef OrigText = SM.extractText(Range, BufferID);
|
|
SourceLoc OrigLoc = Range.getStart();
|
|
|
|
StringRef Text = OrigText;
|
|
while (1) {
|
|
std::match_results<StringRef::iterator> Matches;
|
|
std::regex Regex;
|
|
unsigned Start;
|
|
if (findUrlStartingLoc(Text, Start, Regex) &&
|
|
std::regex_search(Text.substr(Start).begin(),
|
|
Text.substr(Start).end(), Matches, Regex)) {
|
|
auto &RxMatch = Matches[0];
|
|
StringRef Match(RxMatch.first, RxMatch.second - RxMatch.first);
|
|
SourceLoc Loc = OrigLoc.getAdvancedLoc(Match.data() - OrigText.data());
|
|
CharSourceRange Range(Loc, Match.size());
|
|
SyntaxNode Node{ SyntaxNodeKind::CommentURL,
|
|
sanitizeUnpairedParenthesis(Range) };
|
|
if (!passNode(Node))
|
|
return false;
|
|
Text = Text.substr(Match.data() - Text.data() + Match.size());
|
|
} else {
|
|
auto Index = Text.find(':');
|
|
if (Index == StringRef::npos)
|
|
break;
|
|
Text = Text.substr(Index + 1);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
namespace {
|
|
class DocFieldParser {
|
|
const char *ptr;
|
|
const char *end;
|
|
|
|
bool advanceIf(char c) {
|
|
if (ptr == end || c != *ptr)
|
|
return false;
|
|
++ptr;
|
|
return true;
|
|
}
|
|
bool advanceIf(llvm::function_ref<bool(char)> predicate) {
|
|
if (ptr == end || !predicate(*ptr))
|
|
return false;
|
|
++ptr;
|
|
return true;
|
|
}
|
|
|
|
public:
|
|
DocFieldParser(StringRef text) : ptr(text.begin()), end(text.end()) {
|
|
assert(text.rtrim().find('\n') == StringRef::npos &&
|
|
"expected single line");
|
|
}
|
|
|
|
// Case-insensitively match one of the following patterns:
|
|
// ^[ ]?- (parameter) [^:]*:
|
|
// ^[ ]?- (Parameters):
|
|
// ^[ ]*- (...MarkupSimpleFields.def...|returns):
|
|
Optional<StringRef> parseFieldName() {
|
|
unsigned numSpaces = 0;
|
|
while (advanceIf(' '))
|
|
++numSpaces;
|
|
if (!advanceIf('-') || !advanceIf(' '))
|
|
return None;
|
|
|
|
if (ptr == end || !clang::isIdentifierBody(*ptr))
|
|
return None;
|
|
const char *identStart = ptr++;
|
|
while (advanceIf([](char c) { return clang::isIdentifierBody(c); }))
|
|
;
|
|
StringRef ident(identStart, ptr - identStart);
|
|
|
|
if (ident.equals_lower("parameter")) {
|
|
if (numSpaces > 1 || !advanceIf(' '))
|
|
return None;
|
|
while (advanceIf([](char c) { return c != ':'; }))
|
|
;
|
|
if (!advanceIf(':'))
|
|
return None;
|
|
return ident;
|
|
|
|
} else if (advanceIf(':')) {
|
|
if (ident.equals_lower("parameters") && numSpaces > 1)
|
|
return None;
|
|
auto lowerIdent = ident.lower();
|
|
bool isField = llvm::StringSwitch<bool>(lowerIdent)
|
|
#define MARKUP_SIMPLE_FIELD(Id, Keyword, XMLKind) .Case(#Keyword, true)
|
|
#include "swift/Markup/SimpleFields.def"
|
|
.Case("parameters", true)
|
|
.Case("returns", true)
|
|
.Default(false);
|
|
if (isField)
|
|
return ident;
|
|
}
|
|
|
|
return None;
|
|
}
|
|
};
|
|
} // end anonymous namespace
|
|
|
|
Optional<SyntaxNode> ModelASTWalker::parseFieldNode(StringRef Text,
|
|
StringRef OrigText,
|
|
SourceLoc OrigLoc) {
|
|
Optional<SyntaxNode> Node;
|
|
DocFieldParser parser(Text);
|
|
if (auto ident = parser.parseFieldName()) {
|
|
auto loc = OrigLoc.getAdvancedLoc(ident->data() - OrigText.data());
|
|
CharSourceRange range(loc, ident->size());
|
|
Node = Optional<SyntaxNode>({SyntaxNodeKind::DocCommentField, range});
|
|
}
|
|
return Node;
|
|
}
|
|
|
|
bool ModelASTWalker::findFieldsInDocCommentLine(SyntaxNode Node) {
|
|
auto OrigText = SM.extractText(Node.Range, BufferID);
|
|
auto OrigLoc = Node.Range.getStart();
|
|
|
|
auto Text = OrigText.drop_front(3); // Drop "///"
|
|
if (Text.empty())
|
|
return true;
|
|
|
|
auto FieldNode = parseFieldNode(Text, OrigText, OrigLoc);
|
|
if (FieldNode.hasValue())
|
|
passNode(FieldNode.getValue());
|
|
else
|
|
searchForURL(Node.Range);
|
|
return true;
|
|
}
|
|
|
|
bool ModelASTWalker::findFieldsInDocCommentBlock(SyntaxNode Node) {
|
|
auto OrigText = SM.extractText(Node.Range, BufferID);
|
|
auto OrigLoc = Node.Range.getStart();
|
|
|
|
if (!OrigText.startswith("/**") &&
|
|
!(LangOpts.Playground && OrigText.startswith("/*:")))
|
|
return true;
|
|
|
|
auto Text = OrigText.drop_front(3); // Drop "^/**" or "/*:"
|
|
|
|
if (!Text.endswith("*/"))
|
|
return true;
|
|
|
|
Text = Text.drop_back(2); // Drop "*/"
|
|
|
|
if (Text.empty())
|
|
return true;
|
|
|
|
llvm::SmallVector<StringRef, 8> RawLines;
|
|
Text.split(RawLines, '\n');
|
|
auto FirstNewLine = std::find_if(RawLines.begin(), RawLines.end(),
|
|
[](StringRef Line) { return !Line.trim().empty(); });
|
|
|
|
if (FirstNewLine == RawLines.end())
|
|
return true;
|
|
|
|
Text = Text.substr(FirstNewLine->data() - Text.data());
|
|
if (Text.empty())
|
|
return true;
|
|
|
|
size_t Indent = Text.ltrim().data() - Text.data();
|
|
SmallVector<StringRef, 10> Lines;
|
|
Text.split(Lines, "\n");
|
|
|
|
for (auto Line : Lines) {
|
|
Line = Line.rtrim();
|
|
if (Line.size() < Indent)
|
|
continue;
|
|
auto FieldNode = parseFieldNode(Line.drop_front(Indent), OrigText, OrigLoc);
|
|
if (FieldNode.hasValue())
|
|
passNode(FieldNode.getValue());
|
|
else
|
|
searchForURL(CharSourceRange(Node.Range.getStart().
|
|
getAdvancedLoc(Line.data() - OrigText.data()),
|
|
Line.size()));
|
|
}
|
|
|
|
std::match_results<StringRef::iterator> Matches;
|
|
return true;
|
|
}
|