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llvm-project/clang/lib/Format/FormatToken.h

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//===--- FormatToken.h - Format C++ code ------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file contains the declaration of the FormatToken, a wrapper
/// around Token with additional information related to formatting.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_FORMAT_FORMATTOKEN_H
#define LLVM_CLANG_LIB_FORMAT_FORMATTOKEN_H
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/OperatorPrecedence.h"
#include "clang/Format/Format.h"
#include "clang/Lex/Lexer.h"
#include <memory>
#include <unordered_set>
namespace clang {
namespace format {
#define LIST_TOKEN_TYPES \
TYPE(ArrayInitializerLSquare) \
TYPE(ArraySubscriptLSquare) \
TYPE(AttributeParen) \
TYPE(BinaryOperator) \
TYPE(BitFieldColon) \
TYPE(BlockComment) \
TYPE(CastRParen) \
TYPE(ConditionalExpr) \
TYPE(ConflictAlternative) \
TYPE(ConflictEnd) \
TYPE(ConflictStart) \
TYPE(CtorInitializerColon) \
TYPE(CtorInitializerComma) \
TYPE(DesignatedInitializerLSquare) \
TYPE(DesignatedInitializerPeriod) \
TYPE(DictLiteral) \
TYPE(ForEachMacro) \
TYPE(FunctionAnnotationRParen) \
TYPE(FunctionDeclarationName) \
TYPE(FunctionLBrace) \
TYPE(FunctionTypeLParen) \
TYPE(ImplicitStringLiteral) \
TYPE(InheritanceColon) \
TYPE(InheritanceComma) \
TYPE(InlineASMBrace) \
TYPE(InlineASMColon) \
TYPE(JavaAnnotation) \
TYPE(JsComputedPropertyName) \
TYPE(JsExponentiation) \
TYPE(JsExponentiationEqual) \
TYPE(JsFatArrow) \
TYPE(JsNonNullAssertion) \
TYPE(JsTypeColon) \
TYPE(JsTypeOperator) \
TYPE(JsTypeOptionalQuestion) \
TYPE(LambdaArrow) \
TYPE(LambdaLSquare) \
TYPE(LeadingJavaAnnotation) \
TYPE(LineComment) \
TYPE(MacroBlockBegin) \
TYPE(MacroBlockEnd) \
TYPE(ObjCBlockLBrace) \
TYPE(ObjCBlockLParen) \
TYPE(ObjCDecl) \
TYPE(ObjCForIn) \
TYPE(ObjCMethodExpr) \
TYPE(ObjCMethodSpecifier) \
TYPE(ObjCProperty) \
TYPE(ObjCStringLiteral) \
TYPE(OverloadedOperator) \
TYPE(OverloadedOperatorLParen) \
TYPE(PointerOrReference) \
TYPE(PureVirtualSpecifier) \
TYPE(RangeBasedForLoopColon) \
TYPE(RegexLiteral) \
TYPE(SelectorName) \
TYPE(StartOfName) \
TYPE(StructuredBindingLSquare) \
TYPE(TemplateCloser) \
TYPE(TemplateOpener) \
TYPE(TemplateString) \
TYPE(TrailingAnnotation) \
TYPE(TrailingReturnArrow) \
TYPE(TrailingUnaryOperator) \
TYPE(UnaryOperator) \
TYPE(Unknown)
enum TokenType {
#define TYPE(X) TT_##X,
LIST_TOKEN_TYPES
#undef TYPE
NUM_TOKEN_TYPES
};
/// \brief Determines the name of a token type.
const char *getTokenTypeName(TokenType Type);
// Represents what type of block a set of braces open.
enum BraceBlockKind { BK_Unknown, BK_Block, BK_BracedInit };
// The packing kind of a function's parameters.
enum ParameterPackingKind { PPK_BinPacked, PPK_OnePerLine, PPK_Inconclusive };
enum FormatDecision { FD_Unformatted, FD_Continue, FD_Break };
class TokenRole;
class AnnotatedLine;
/// \brief A wrapper around a \c Token storing information about the
/// whitespace characters preceding it.
struct FormatToken {
FormatToken() {}
/// \brief The \c Token.
Token Tok;
/// \brief The number of newlines immediately before the \c Token.
///
/// This can be used to determine what the user wrote in the original code
/// and thereby e.g. leave an empty line between two function definitions.
unsigned NewlinesBefore = 0;
/// \brief Whether there is at least one unescaped newline before the \c
/// Token.
bool HasUnescapedNewline = false;
/// \brief The range of the whitespace immediately preceding the \c Token.
SourceRange WhitespaceRange;
/// \brief The offset just past the last '\n' in this token's leading
/// whitespace (relative to \c WhiteSpaceStart). 0 if there is no '\n'.
unsigned LastNewlineOffset = 0;
/// \brief The width of the non-whitespace parts of the token (or its first
/// line for multi-line tokens) in columns.
/// We need this to correctly measure number of columns a token spans.
unsigned ColumnWidth = 0;
/// \brief Contains the width in columns of the last line of a multi-line
/// token.
unsigned LastLineColumnWidth = 0;
/// \brief Whether the token text contains newlines (escaped or not).
bool IsMultiline = false;
/// \brief Indicates that this is the first token of the file.
bool IsFirst = false;
/// \brief Whether there must be a line break before this token.
///
/// This happens for example when a preprocessor directive ended directly
/// before the token.
bool MustBreakBefore = false;
/// \brief The raw text of the token.
///
/// Contains the raw token text without leading whitespace and without leading
/// escaped newlines.
StringRef TokenText;
/// \brief Set to \c true if this token is an unterminated literal.
bool IsUnterminatedLiteral = 0;
/// \brief Contains the kind of block if this token is a brace.
BraceBlockKind BlockKind = BK_Unknown;
TokenType Type = TT_Unknown;
/// \brief The number of spaces that should be inserted before this token.
unsigned SpacesRequiredBefore = 0;
/// \brief \c true if it is allowed to break before this token.
bool CanBreakBefore = false;
/// \brief \c true if this is the ">" of "template<..>".
bool ClosesTemplateDeclaration = false;
/// \brief Number of parameters, if this is "(", "[" or "<".
///
/// This is initialized to 1 as we don't need to distinguish functions with
/// 0 parameters from functions with 1 parameter. Thus, we can simply count
/// the number of commas.
unsigned ParameterCount = 0;
/// \brief Number of parameters that are nested blocks,
/// if this is "(", "[" or "<".
unsigned BlockParameterCount = 0;
/// \brief If this is a bracket ("<", "(", "[" or "{"), contains the kind of
/// the surrounding bracket.
tok::TokenKind ParentBracket = tok::unknown;
/// \brief A token can have a special role that can carry extra information
/// about the token's formatting.
std::unique_ptr<TokenRole> Role;
/// \brief If this is an opening parenthesis, how are the parameters packed?
ParameterPackingKind PackingKind = PPK_Inconclusive;
/// \brief The total length of the unwrapped line up to and including this
/// token.
unsigned TotalLength = 0;
/// \brief The original 0-based column of this token, including expanded tabs.
/// The configured TabWidth is used as tab width.
unsigned OriginalColumn = 0;
/// \brief The length of following tokens until the next natural split point,
/// or the next token that can be broken.
unsigned UnbreakableTailLength = 0;
// FIXME: Come up with a 'cleaner' concept.
/// \brief The binding strength of a token. This is a combined value of
/// operator precedence, parenthesis nesting, etc.
unsigned BindingStrength = 0;
/// \brief The nesting level of this token, i.e. the number of surrounding (),
/// [], {} or <>.
unsigned NestingLevel = 0;
/// \brief The indent level of this token. Copied from the surrounding line.
unsigned IndentLevel = 0;
/// \brief Penalty for inserting a line break before this token.
unsigned SplitPenalty = 0;
/// \brief If this is the first ObjC selector name in an ObjC method
/// definition or call, this contains the length of the longest name.
///
/// This being set to 0 means that the selectors should not be colon-aligned,
/// e.g. because several of them are block-type.
unsigned LongestObjCSelectorName = 0;
/// \brief Stores the number of required fake parentheses and the
/// corresponding operator precedence.
///
/// If multiple fake parentheses start at a token, this vector stores them in
/// reverse order, i.e. inner fake parenthesis first.
SmallVector<prec::Level, 4> FakeLParens;
/// \brief Insert this many fake ) after this token for correct indentation.
unsigned FakeRParens = 0;
/// \brief \c true if this token starts a binary expression, i.e. has at least
/// one fake l_paren with a precedence greater than prec::Unknown.
bool StartsBinaryExpression = false;
/// \brief \c true if this token ends a binary expression.
bool EndsBinaryExpression = false;
/// \brief Is this is an operator (or "."/"->") in a sequence of operators
/// with the same precedence, contains the 0-based operator index.
unsigned OperatorIndex = 0;
/// \brief If this is an operator (or "."/"->") in a sequence of operators
/// with the same precedence, points to the next operator.
FormatToken *NextOperator = nullptr;
/// \brief Is this token part of a \c DeclStmt defining multiple variables?
///
/// Only set if \c Type == \c TT_StartOfName.
bool PartOfMultiVariableDeclStmt = false;
/// \brief Does this line comment continue a line comment section?
///
/// Only set to true if \c Type == \c TT_LineComment.
bool ContinuesLineCommentSection = false;
/// \brief If this is a bracket, this points to the matching one.
FormatToken *MatchingParen = nullptr;
/// \brief The previous token in the unwrapped line.
FormatToken *Previous = nullptr;
/// \brief The next token in the unwrapped line.
FormatToken *Next = nullptr;
/// \brief If this token starts a block, this contains all the unwrapped lines
/// in it.
SmallVector<AnnotatedLine *, 1> Children;
/// \brief Stores the formatting decision for the token once it was made.
FormatDecision Decision = FD_Unformatted;
/// \brief If \c true, this token has been fully formatted (indented and
/// potentially re-formatted inside), and we do not allow further formatting
/// changes.
bool Finalized = false;
bool is(tok::TokenKind Kind) const { return Tok.is(Kind); }
bool is(TokenType TT) const { return Type == TT; }
bool is(const IdentifierInfo *II) const {
return II && II == Tok.getIdentifierInfo();
}
bool is(tok::PPKeywordKind Kind) const {
return Tok.getIdentifierInfo() &&
Tok.getIdentifierInfo()->getPPKeywordID() == Kind;
}
template <typename A, typename B> bool isOneOf(A K1, B K2) const {
return is(K1) || is(K2);
}
template <typename A, typename B, typename... Ts>
bool isOneOf(A K1, B K2, Ts... Ks) const {
return is(K1) || isOneOf(K2, Ks...);
}
template <typename T> bool isNot(T Kind) const { return !is(Kind); }
/// \c true if this token starts a sequence with the given tokens in order,
/// following the ``Next`` pointers, ignoring comments.
template <typename A, typename... Ts>
bool startsSequence(A K1, Ts... Tokens) const {
return startsSequenceInternal(K1, Tokens...);
}
/// \c true if this token ends a sequence with the given tokens in order,
/// following the ``Previous`` pointers, ignoring comments.
template <typename A, typename... Ts>
bool endsSequence(A K1, Ts... Tokens) const {
return endsSequenceInternal(K1, Tokens...);
}
bool isStringLiteral() const { return tok::isStringLiteral(Tok.getKind()); }
bool isObjCAtKeyword(tok::ObjCKeywordKind Kind) const {
return Tok.isObjCAtKeyword(Kind);
}
bool isAccessSpecifier(bool ColonRequired = true) const {
return isOneOf(tok::kw_public, tok::kw_protected, tok::kw_private) &&
(!ColonRequired || (Next && Next->is(tok::colon)));
}
/// \brief Determine whether the token is a simple-type-specifier.
bool isSimpleTypeSpecifier() const;
bool isObjCAccessSpecifier() const {
return is(tok::at) && Next &&
(Next->isObjCAtKeyword(tok::objc_public) ||
Next->isObjCAtKeyword(tok::objc_protected) ||
Next->isObjCAtKeyword(tok::objc_package) ||
Next->isObjCAtKeyword(tok::objc_private));
}
/// \brief Returns whether \p Tok is ([{ or a template opening <.
bool opensScope() const {
if (is(TT_TemplateString) && TokenText.endswith("${"))
return true;
return isOneOf(tok::l_paren, tok::l_brace, tok::l_square,
TT_TemplateOpener);
}
/// \brief Returns whether \p Tok is )]} or a template closing >.
bool closesScope() const {
if (is(TT_TemplateString) && TokenText.startswith("}"))
return true;
return isOneOf(tok::r_paren, tok::r_brace, tok::r_square,
TT_TemplateCloser);
}
/// \brief Returns \c true if this is a "." or "->" accessing a member.
bool isMemberAccess() const {
return isOneOf(tok::arrow, tok::period, tok::arrowstar) &&
!isOneOf(TT_DesignatedInitializerPeriod, TT_TrailingReturnArrow,
TT_LambdaArrow);
}
bool isUnaryOperator() const {
switch (Tok.getKind()) {
case tok::plus:
case tok::plusplus:
case tok::minus:
case tok::minusminus:
case tok::exclaim:
case tok::tilde:
case tok::kw_sizeof:
case tok::kw_alignof:
return true;
default:
return false;
}
}
bool isBinaryOperator() const {
// Comma is a binary operator, but does not behave as such wrt. formatting.
return getPrecedence() > prec::Comma;
}
bool isTrailingComment() const {
return is(tok::comment) &&
(is(TT_LineComment) || !Next || Next->NewlinesBefore > 0);
}
/// \brief Returns \c true if this is a keyword that can be used
/// like a function call (e.g. sizeof, typeid, ...).
bool isFunctionLikeKeyword() const {
switch (Tok.getKind()) {
case tok::kw_throw:
case tok::kw_typeid:
case tok::kw_return:
case tok::kw_sizeof:
case tok::kw_alignof:
case tok::kw_alignas:
case tok::kw_decltype:
case tok::kw_noexcept:
case tok::kw_static_assert:
case tok::kw___attribute:
return true;
default:
return false;
}
}
/// \brief Returns \c true if this is a string literal that's like a label,
/// e.g. ends with "=" or ":".
bool isLabelString() const {
if (!is(tok::string_literal))
return false;
StringRef Content = TokenText;
if (Content.startswith("\"") || Content.startswith("'"))
Content = Content.drop_front(1);
if (Content.endswith("\"") || Content.endswith("'"))
Content = Content.drop_back(1);
Content = Content.trim();
return Content.size() > 1 &&
(Content.back() == ':' || Content.back() == '=');
}
/// \brief Returns actual token start location without leading escaped
/// newlines and whitespace.
///
/// This can be different to Tok.getLocation(), which includes leading escaped
/// newlines.
SourceLocation getStartOfNonWhitespace() const {
return WhitespaceRange.getEnd();
}
prec::Level getPrecedence() const {
return getBinOpPrecedence(Tok.getKind(), true, true);
}
/// \brief Returns the previous token ignoring comments.
FormatToken *getPreviousNonComment() const {
FormatToken *Tok = Previous;
while (Tok && Tok->is(tok::comment))
Tok = Tok->Previous;
return Tok;
}
/// \brief Returns the next token ignoring comments.
const FormatToken *getNextNonComment() const {
const FormatToken *Tok = Next;
while (Tok && Tok->is(tok::comment))
Tok = Tok->Next;
return Tok;
}
/// \brief Returns \c true if this tokens starts a block-type list, i.e. a
/// list that should be indented with a block indent.
bool opensBlockOrBlockTypeList(const FormatStyle &Style) const {
if (is(TT_TemplateString) && opensScope())
return true;
return is(TT_ArrayInitializerLSquare) ||
(is(tok::l_brace) &&
(BlockKind == BK_Block || is(TT_DictLiteral) ||
(!Style.Cpp11BracedListStyle && NestingLevel == 0))) ||
(is(tok::less) && (Style.Language == FormatStyle::LK_Proto ||
Style.Language == FormatStyle::LK_TextProto));
}
/// \brief Returns whether the token is the left square bracket of a C++
/// structured binding declaration.
bool isCppStructuredBinding(const FormatStyle &Style) const {
if (!Style.isCpp() || isNot(tok::l_square))
return false;
const FormatToken *T = this;
do {
T = T->getPreviousNonComment();
} while (T && T->isOneOf(tok::kw_const, tok::kw_volatile, tok::amp,
tok::ampamp));
return T && T->is(tok::kw_auto);
}
/// \brief Same as opensBlockOrBlockTypeList, but for the closing token.
bool closesBlockOrBlockTypeList(const FormatStyle &Style) const {
if (is(TT_TemplateString) && closesScope())
return true;
return MatchingParen && MatchingParen->opensBlockOrBlockTypeList(Style);
}
/// \brief Return the actual namespace token, if this token starts a namespace
/// block.
const FormatToken *getNamespaceToken() const {
const FormatToken *NamespaceTok = this;
if (is(tok::comment))
NamespaceTok = NamespaceTok->getNextNonComment();
// Detect "(inline)? namespace" in the beginning of a line.
if (NamespaceTok && NamespaceTok->is(tok::kw_inline))
NamespaceTok = NamespaceTok->getNextNonComment();
return NamespaceTok && NamespaceTok->is(tok::kw_namespace) ? NamespaceTok
: nullptr;
}
private:
// Disallow copying.
FormatToken(const FormatToken &) = delete;
void operator=(const FormatToken &) = delete;
template <typename A, typename... Ts>
bool startsSequenceInternal(A K1, Ts... Tokens) const {
if (is(tok::comment) && Next)
return Next->startsSequenceInternal(K1, Tokens...);
return is(K1) && Next && Next->startsSequenceInternal(Tokens...);
}
template <typename A> bool startsSequenceInternal(A K1) const {
if (is(tok::comment) && Next)
return Next->startsSequenceInternal(K1);
return is(K1);
}
template <typename A, typename... Ts> bool endsSequenceInternal(A K1) const {
if (is(tok::comment) && Previous)
return Previous->endsSequenceInternal(K1);
return is(K1);
}
template <typename A, typename... Ts>
bool endsSequenceInternal(A K1, Ts... Tokens) const {
if (is(tok::comment) && Previous)
return Previous->endsSequenceInternal(K1, Tokens...);
return is(K1) && Previous && Previous->endsSequenceInternal(Tokens...);
}
};
class ContinuationIndenter;
struct LineState;
class TokenRole {
public:
TokenRole(const FormatStyle &Style) : Style(Style) {}
virtual ~TokenRole();
/// \brief After the \c TokenAnnotator has finished annotating all the tokens,
/// this function precomputes required information for formatting.
virtual void precomputeFormattingInfos(const FormatToken *Token);
/// \brief Apply the special formatting that the given role demands.
///
/// Assumes that the token having this role is already formatted.
///
/// Continues formatting from \p State leaving indentation to \p Indenter and
/// returns the total penalty that this formatting incurs.
virtual unsigned formatFromToken(LineState &State,
ContinuationIndenter *Indenter,
bool DryRun) {
return 0;
}
/// \brief Same as \c formatFromToken, but assumes that the first token has
/// already been set thereby deciding on the first line break.
virtual unsigned formatAfterToken(LineState &State,
ContinuationIndenter *Indenter,
bool DryRun) {
return 0;
}
/// \brief Notifies the \c Role that a comma was found.
virtual void CommaFound(const FormatToken *Token) {}
protected:
const FormatStyle &Style;
};
class CommaSeparatedList : public TokenRole {
public:
CommaSeparatedList(const FormatStyle &Style)
: TokenRole(Style), HasNestedBracedList(false) {}
void precomputeFormattingInfos(const FormatToken *Token) override;
unsigned formatAfterToken(LineState &State, ContinuationIndenter *Indenter,
bool DryRun) override;
unsigned formatFromToken(LineState &State, ContinuationIndenter *Indenter,
bool DryRun) override;
/// \brief Adds \p Token as the next comma to the \c CommaSeparated list.
void CommaFound(const FormatToken *Token) override {
Commas.push_back(Token);
}
private:
/// \brief A struct that holds information on how to format a given list with
/// a specific number of columns.
struct ColumnFormat {
/// \brief The number of columns to use.
unsigned Columns;
/// \brief The total width in characters.
unsigned TotalWidth;
/// \brief The number of lines required for this format.
unsigned LineCount;
/// \brief The size of each column in characters.
SmallVector<unsigned, 8> ColumnSizes;
};
/// \brief Calculate which \c ColumnFormat fits best into
/// \p RemainingCharacters.
const ColumnFormat *getColumnFormat(unsigned RemainingCharacters) const;
/// \brief The ordered \c FormatTokens making up the commas of this list.
SmallVector<const FormatToken *, 8> Commas;
/// \brief The length of each of the list's items in characters including the
/// trailing comma.
SmallVector<unsigned, 8> ItemLengths;
/// \brief Precomputed formats that can be used for this list.
SmallVector<ColumnFormat, 4> Formats;
bool HasNestedBracedList;
};
/// \brief Encapsulates keywords that are context sensitive or for languages not
/// properly supported by Clang's lexer.
struct AdditionalKeywords {
AdditionalKeywords(IdentifierTable &IdentTable) {
kw_final = &IdentTable.get("final");
kw_override = &IdentTable.get("override");
kw_in = &IdentTable.get("in");
kw_of = &IdentTable.get("of");
kw_CF_ENUM = &IdentTable.get("CF_ENUM");
kw_CF_OPTIONS = &IdentTable.get("CF_OPTIONS");
kw_NS_ENUM = &IdentTable.get("NS_ENUM");
kw_NS_OPTIONS = &IdentTable.get("NS_OPTIONS");
kw_as = &IdentTable.get("as");
kw_async = &IdentTable.get("async");
kw_await = &IdentTable.get("await");
kw_declare = &IdentTable.get("declare");
kw_finally = &IdentTable.get("finally");
kw_from = &IdentTable.get("from");
kw_function = &IdentTable.get("function");
kw_get = &IdentTable.get("get");
kw_import = &IdentTable.get("import");
kw_is = &IdentTable.get("is");
kw_let = &IdentTable.get("let");
kw_module = &IdentTable.get("module");
kw_readonly = &IdentTable.get("readonly");
kw_set = &IdentTable.get("set");
kw_type = &IdentTable.get("type");
kw_typeof = &IdentTable.get("typeof");
kw_var = &IdentTable.get("var");
kw_yield = &IdentTable.get("yield");
kw_abstract = &IdentTable.get("abstract");
kw_assert = &IdentTable.get("assert");
kw_extends = &IdentTable.get("extends");
kw_implements = &IdentTable.get("implements");
kw_instanceof = &IdentTable.get("instanceof");
kw_interface = &IdentTable.get("interface");
kw_native = &IdentTable.get("native");
kw_package = &IdentTable.get("package");
kw_synchronized = &IdentTable.get("synchronized");
kw_throws = &IdentTable.get("throws");
kw___except = &IdentTable.get("__except");
kw___has_include = &IdentTable.get("__has_include");
kw___has_include_next = &IdentTable.get("__has_include_next");
kw_mark = &IdentTable.get("mark");
kw_extend = &IdentTable.get("extend");
kw_option = &IdentTable.get("option");
kw_optional = &IdentTable.get("optional");
kw_repeated = &IdentTable.get("repeated");
kw_required = &IdentTable.get("required");
kw_returns = &IdentTable.get("returns");
kw_signals = &IdentTable.get("signals");
kw_qsignals = &IdentTable.get("Q_SIGNALS");
kw_slots = &IdentTable.get("slots");
kw_qslots = &IdentTable.get("Q_SLOTS");
// Keep this at the end of the constructor to make sure everything here is
// already initialized.
JsExtraKeywords = std::unordered_set<IdentifierInfo *>(
{kw_as, kw_async, kw_await, kw_declare, kw_finally, kw_from,
kw_function, kw_get, kw_import, kw_is, kw_let, kw_module, kw_readonly,
kw_set, kw_type, kw_typeof, kw_var, kw_yield,
// Keywords from the Java section.
kw_abstract, kw_extends, kw_implements, kw_instanceof, kw_interface});
}
// Context sensitive keywords.
IdentifierInfo *kw_final;
IdentifierInfo *kw_override;
IdentifierInfo *kw_in;
IdentifierInfo *kw_of;
IdentifierInfo *kw_CF_ENUM;
IdentifierInfo *kw_CF_OPTIONS;
IdentifierInfo *kw_NS_ENUM;
IdentifierInfo *kw_NS_OPTIONS;
IdentifierInfo *kw___except;
IdentifierInfo *kw___has_include;
IdentifierInfo *kw___has_include_next;
// JavaScript keywords.
IdentifierInfo *kw_as;
IdentifierInfo *kw_async;
IdentifierInfo *kw_await;
IdentifierInfo *kw_declare;
IdentifierInfo *kw_finally;
IdentifierInfo *kw_from;
IdentifierInfo *kw_function;
IdentifierInfo *kw_get;
IdentifierInfo *kw_import;
IdentifierInfo *kw_is;
IdentifierInfo *kw_let;
IdentifierInfo *kw_module;
IdentifierInfo *kw_readonly;
IdentifierInfo *kw_set;
IdentifierInfo *kw_type;
IdentifierInfo *kw_typeof;
IdentifierInfo *kw_var;
IdentifierInfo *kw_yield;
// Java keywords.
IdentifierInfo *kw_abstract;
IdentifierInfo *kw_assert;
IdentifierInfo *kw_extends;
IdentifierInfo *kw_implements;
IdentifierInfo *kw_instanceof;
IdentifierInfo *kw_interface;
IdentifierInfo *kw_native;
IdentifierInfo *kw_package;
IdentifierInfo *kw_synchronized;
IdentifierInfo *kw_throws;
// Pragma keywords.
IdentifierInfo *kw_mark;
// Proto keywords.
IdentifierInfo *kw_extend;
IdentifierInfo *kw_option;
IdentifierInfo *kw_optional;
IdentifierInfo *kw_repeated;
IdentifierInfo *kw_required;
IdentifierInfo *kw_returns;
// QT keywords.
IdentifierInfo *kw_signals;
IdentifierInfo *kw_qsignals;
IdentifierInfo *kw_slots;
IdentifierInfo *kw_qslots;
/// \brief Returns \c true if \p Tok is a true JavaScript identifier, returns
/// \c false if it is a keyword or a pseudo keyword.
bool IsJavaScriptIdentifier(const FormatToken &Tok) const {
return Tok.is(tok::identifier) &&
JsExtraKeywords.find(Tok.Tok.getIdentifierInfo()) ==
JsExtraKeywords.end();
}
private:
/// \brief The JavaScript keywords beyond the C++ keyword set.
std::unordered_set<IdentifierInfo *> JsExtraKeywords;
};
} // namespace format
} // namespace clang
#endif
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