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-rw-r--r--clang/lib/Format/UnwrappedLineParser.h256
1 files changed, 1 insertions, 255 deletions
diff --git a/clang/lib/Format/UnwrappedLineParser.h b/clang/lib/Format/UnwrappedLineParser.h
index 350885e2c80..227b023a81b 100644
--- a/clang/lib/Format/UnwrappedLineParser.h
+++ b/clang/lib/Format/UnwrappedLineParser.h
@@ -17,267 +17,13 @@
#define LLVM_CLANG_FORMAT_UNWRAPPED_LINE_PARSER_H
#include "clang/Basic/IdentifierTable.h"
-#include "clang/Basic/OperatorPrecedence.h"
#include "clang/Format/Format.h"
-#include "clang/Lex/Lexer.h"
+#include "FormatToken.h"
#include <list>
namespace clang {
namespace format {
-enum TokenType {
- TT_BinaryOperator,
- TT_BlockComment,
- TT_CastRParen,
- TT_ConditionalExpr,
- TT_CtorInitializerColon,
- TT_DesignatedInitializerPeriod,
- TT_ImplicitStringLiteral,
- TT_InlineASMColon,
- TT_InheritanceColon,
- TT_FunctionTypeLParen,
- TT_LineComment,
- TT_ObjCArrayLiteral,
- TT_ObjCBlockLParen,
- TT_ObjCDecl,
- TT_ObjCDictLiteral,
- TT_ObjCForIn,
- TT_ObjCMethodExpr,
- TT_ObjCMethodSpecifier,
- TT_ObjCProperty,
- TT_ObjCSelectorName,
- TT_OverloadedOperator,
- TT_OverloadedOperatorLParen,
- TT_PointerOrReference,
- TT_PureVirtualSpecifier,
- TT_RangeBasedForLoopColon,
- TT_StartOfName,
- TT_TemplateCloser,
- TT_TemplateOpener,
- TT_TrailingUnaryOperator,
- TT_UnaryOperator,
- TT_Unknown
-};
-
-/// \brief A wrapper around a \c Token storing information about the
-/// whitespace characters preceeding it.
-struct FormatToken {
- FormatToken()
- : NewlinesBefore(0), HasUnescapedNewline(false), LastNewlineOffset(0),
- TokenLength(0), IsFirst(false), MustBreakBefore(false),
- Type(TT_Unknown), SpacesRequiredBefore(0), CanBreakBefore(false),
- ClosesTemplateDeclaration(false), ParameterCount(0), TotalLength(0),
- UnbreakableTailLength(0), BindingStrength(0), SplitPenalty(0),
- LongestObjCSelectorName(0), FakeRParens(0), LastInChainOfCalls(false),
- PartOfMultiVariableDeclStmt(false), MatchingParen(NULL), Previous(NULL),
- Next(NULL) {}
-
- /// \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;
-
- /// \brief Whether there is at least one unescaped newline before the \c
- /// Token.
- bool HasUnescapedNewline;
-
- /// \brief The range of the whitespace immediately preceeding 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;
-
- /// \brief The length of the non-whitespace parts of the token. This is
- /// necessary because we need to handle escaped newlines that are stored
- /// with the token.
- unsigned TokenLength;
-
- /// \brief Indicates that this is the first token.
- bool IsFirst;
-
- /// \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;
-
- /// \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();
- }
-
- /// \brief The raw text of the token.
- ///
- /// Contains the raw token text without leading whitespace and without leading
- /// escaped newlines.
- StringRef TokenText;
-
- TokenType Type;
-
- unsigned SpacesRequiredBefore;
- bool CanBreakBefore;
-
- bool ClosesTemplateDeclaration;
-
- /// \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;
-
- /// \brief The total length of the line up to and including this token.
- unsigned TotalLength;
-
- /// \brief The length of following tokens until the next natural split point,
- /// or the next token that can be broken.
- unsigned UnbreakableTailLength;
-
- // 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;
-
- /// \brief Penalty for inserting a line break before this token.
- unsigned SplitPenalty;
-
- /// \brief If this is the first ObjC selector name in an ObjC method
- /// definition or call, this contains the length of the longest name.
- unsigned LongestObjCSelectorName;
-
- /// \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;
-
- /// \brief Is this the last "." or "->" in a builder-type call?
- bool LastInChainOfCalls;
-
- /// \brief Is this token part of a \c DeclStmt defining multiple variables?
- ///
- /// Only set if \c Type == \c TT_StartOfName.
- bool PartOfMultiVariableDeclStmt;
-
- bool is(tok::TokenKind Kind) const { return Tok.is(Kind); }
-
- bool isOneOf(tok::TokenKind K1, tok::TokenKind K2) const {
- return is(K1) || is(K2);
- }
-
- bool isOneOf(tok::TokenKind K1, tok::TokenKind K2, tok::TokenKind K3) const {
- return is(K1) || is(K2) || is(K3);
- }
-
- bool isOneOf(tok::TokenKind K1, tok::TokenKind K2, tok::TokenKind K3,
- tok::TokenKind K4, tok::TokenKind K5 = tok::NUM_TOKENS,
- tok::TokenKind K6 = tok::NUM_TOKENS,
- tok::TokenKind K7 = tok::NUM_TOKENS,
- tok::TokenKind K8 = tok::NUM_TOKENS,
- tok::TokenKind K9 = tok::NUM_TOKENS,
- tok::TokenKind K10 = tok::NUM_TOKENS,
- tok::TokenKind K11 = tok::NUM_TOKENS,
- tok::TokenKind K12 = tok::NUM_TOKENS) const {
- return is(K1) || is(K2) || is(K3) || is(K4) || is(K5) || is(K6) || is(K7) ||
- is(K8) || is(K9) || is(K10) || is(K11) || is(K12);
- }
-
- bool isNot(tok::TokenKind Kind) const { return Tok.isNot(Kind); }
-
- 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)));
- }
-
- 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 {
- return isOneOf(tok::l_paren, tok::l_brace, tok::l_square) ||
- Type == TT_TemplateOpener;
-
- }
- /// \brief Returns whether \p Tok is )]} or a template opening >.
- bool closesScope() const {
- return isOneOf(tok::r_paren, tok::r_brace, tok::r_square) ||
- Type == TT_TemplateCloser;
- }
-
- 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) && (!Next || Next->NewlinesBefore > 0);
- }
-
- prec::Level getPrecedence() const {
- return getBinOpPrecedence(Tok.getKind(), true, true);
- }
-
- /// \brief Returns the previous token ignoring comments.
- FormatToken *getPreviousNoneComment() const {
- FormatToken *Tok = Previous;
- while (Tok != NULL && Tok->is(tok::comment))
- Tok = Tok->Previous;
- return Tok;
- }
-
- /// \brief Returns the next token ignoring comments.
- const FormatToken *getNextNoneComment() const {
- const FormatToken *Tok = Next;
- while (Tok != NULL && Tok->is(tok::comment))
- Tok = Tok->Next;
- return Tok;
- }
-
- FormatToken *MatchingParen;
-
- FormatToken *Previous;
- FormatToken *Next;
-
-private:
- // Disallow copying.
- FormatToken(const FormatToken &);
- void operator=(const FormatToken &);
-};
-
/// \brief An unwrapped line is a sequence of \c Token, that we would like to
/// put on a single line if there was no column limit.
///
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