Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1 | //===--- Format.cpp - Format C++ code -------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | /// |
| 10 | /// \file |
| 11 | /// \brief This file implements functions declared in Format.h. This will be |
| 12 | /// split into separate files as we go. |
| 13 | /// |
| 14 | /// This is EXPERIMENTAL code under heavy development. It is not in a state yet, |
| 15 | /// where it can be used to format real code. |
| 16 | /// |
| 17 | //===----------------------------------------------------------------------===// |
| 18 | |
| 19 | #include "clang/Format/Format.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 20 | #include "UnwrappedLineParser.h" |
Daniel Jasper | 675d2e3 | 2012-12-21 10:20:02 +0000 | [diff] [blame] | 21 | #include "clang/Basic/OperatorPrecedence.h" |
Chandler Carruth | b99083e | 2013-01-02 10:28:36 +0000 | [diff] [blame] | 22 | #include "clang/Basic/SourceManager.h" |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 23 | #include "clang/Lex/Lexer.h" |
Daniel Jasper | 8822d3a | 2012-12-04 13:02:32 +0000 | [diff] [blame] | 24 | #include <string> |
| 25 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 26 | namespace clang { |
| 27 | namespace format { |
| 28 | |
| 29 | // FIXME: Move somewhere sane. |
| 30 | struct TokenAnnotation { |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 31 | enum TokenType { |
| 32 | TT_Unknown, |
| 33 | TT_TemplateOpener, |
| 34 | TT_TemplateCloser, |
| 35 | TT_BinaryOperator, |
| 36 | TT_UnaryOperator, |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 37 | TT_TrailingUnaryOperator, |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 38 | TT_OverloadedOperator, |
| 39 | TT_PointerOrReference, |
| 40 | TT_ConditionalExpr, |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 41 | TT_CtorInitializerColon, |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 42 | TT_LineComment, |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 43 | TT_BlockComment, |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 44 | TT_DirectorySeparator, |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 45 | TT_ObjCMethodSpecifier |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 46 | }; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 47 | |
| 48 | TokenType Type; |
| 49 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 50 | bool SpaceRequiredBefore; |
| 51 | bool CanBreakBefore; |
| 52 | bool MustBreakBefore; |
Daniel Jasper | 9a64fb5 | 2013-01-02 15:08:56 +0000 | [diff] [blame] | 53 | |
| 54 | bool ClosesTemplateDeclaration; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 55 | }; |
| 56 | |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 57 | static prec::Level getPrecedence(const FormatToken &Tok) { |
| 58 | return getBinOpPrecedence(Tok.Tok.getKind(), true, true); |
| 59 | } |
| 60 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 61 | using llvm::MutableArrayRef; |
| 62 | |
| 63 | FormatStyle getLLVMStyle() { |
| 64 | FormatStyle LLVMStyle; |
| 65 | LLVMStyle.ColumnLimit = 80; |
| 66 | LLVMStyle.MaxEmptyLinesToKeep = 1; |
| 67 | LLVMStyle.PointerAndReferenceBindToType = false; |
| 68 | LLVMStyle.AccessModifierOffset = -2; |
| 69 | LLVMStyle.SplitTemplateClosingGreater = true; |
Alexander Kornienko | 1575731 | 2012-12-06 18:03:27 +0000 | [diff] [blame] | 70 | LLVMStyle.IndentCaseLabels = false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 71 | return LLVMStyle; |
| 72 | } |
| 73 | |
| 74 | FormatStyle getGoogleStyle() { |
| 75 | FormatStyle GoogleStyle; |
| 76 | GoogleStyle.ColumnLimit = 80; |
| 77 | GoogleStyle.MaxEmptyLinesToKeep = 1; |
| 78 | GoogleStyle.PointerAndReferenceBindToType = true; |
| 79 | GoogleStyle.AccessModifierOffset = -1; |
| 80 | GoogleStyle.SplitTemplateClosingGreater = false; |
Alexander Kornienko | 1575731 | 2012-12-06 18:03:27 +0000 | [diff] [blame] | 81 | GoogleStyle.IndentCaseLabels = true; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 82 | return GoogleStyle; |
| 83 | } |
| 84 | |
| 85 | struct OptimizationParameters { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 86 | unsigned PenaltyIndentLevel; |
Daniel Jasper | a4974cf | 2012-12-24 16:43:00 +0000 | [diff] [blame] | 87 | unsigned PenaltyLevelDecrease; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 88 | }; |
| 89 | |
| 90 | class UnwrappedLineFormatter { |
| 91 | public: |
| 92 | UnwrappedLineFormatter(const FormatStyle &Style, SourceManager &SourceMgr, |
| 93 | const UnwrappedLine &Line, |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 94 | unsigned PreviousEndOfLineColumn, |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 95 | const std::vector<TokenAnnotation> &Annotations, |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 96 | tooling::Replacements &Replaces, bool StructuralError) |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 97 | : Style(Style), SourceMgr(SourceMgr), Line(Line), |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 98 | PreviousEndOfLineColumn(PreviousEndOfLineColumn), |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 99 | Annotations(Annotations), Replaces(Replaces), |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 100 | StructuralError(StructuralError) { |
Daniel Jasper | e2c7acf | 2012-12-24 00:13:23 +0000 | [diff] [blame] | 101 | Parameters.PenaltyIndentLevel = 15; |
Daniel Jasper | 46a46a2 | 2013-01-07 07:13:20 +0000 | [diff] [blame] | 102 | Parameters.PenaltyLevelDecrease = 30; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 103 | } |
| 104 | |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 105 | /// \brief Formats an \c UnwrappedLine. |
| 106 | /// |
| 107 | /// \returns The column after the last token in the last line of the |
| 108 | /// \c UnwrappedLine. |
| 109 | unsigned format() { |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 110 | // Format first token and initialize indent. |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 111 | unsigned Indent = formatFirstToken(); |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 112 | |
| 113 | // Initialize state dependent on indent. |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 114 | IndentState State; |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 115 | State.Column = Indent; |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 116 | State.ConsumedTokens = 0; |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 117 | State.Indent.push_back(Indent + 4); |
| 118 | State.LastSpace.push_back(Indent); |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 119 | State.FirstLessLess.push_back(0); |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 120 | State.ForLoopVariablePos = 0; |
| 121 | State.LineContainsContinuedForLoopSection = false; |
Daniel Jasper | a4974cf | 2012-12-24 16:43:00 +0000 | [diff] [blame] | 122 | State.StartOfLineLevel = 1; |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 123 | |
| 124 | // The first token has already been indented and thus consumed. |
| 125 | moveStateToNextToken(State); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 126 | |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 127 | // Check whether the UnwrappedLine can be put onto a single line. If so, |
| 128 | // this is bound to be the optimal solution (by definition) and we don't |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 129 | // need to analyze the entire solution space. |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 130 | unsigned Columns = State.Column; |
| 131 | bool FitsOnALine = true; |
| 132 | for (unsigned i = 1, n = Line.Tokens.size(); i != n; ++i) { |
| 133 | Columns += (Annotations[i].SpaceRequiredBefore ? 1 : 0) + |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 134 | Line.Tokens[i].TokenLength; |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 135 | // A special case for the colon of a constructor initializer as this only |
| 136 | // needs to be put on a new line if the line needs to be split. |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 137 | // FIXME: We need to check whether we're in a preprocessor directive, even |
| 138 | // if all tokens fit - the next line might be a preprocessor directive, |
| 139 | // too, in which case we need to account for the possible escaped newline. |
Manuel Klimek | d544c57 | 2013-01-07 09:24:17 +0000 | [diff] [blame^] | 140 | if (Columns > Style.ColumnLimit - (Line.InPPDirective ? 1 : 0) || |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 141 | (Annotations[i].MustBreakBefore && |
| 142 | Annotations[i].Type != TokenAnnotation::TT_CtorInitializerColon)) { |
| 143 | FitsOnALine = false; |
| 144 | break; |
| 145 | } |
| 146 | } |
| 147 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 148 | // Start iterating at 1 as we have correctly formatted of Token #0 above. |
| 149 | for (unsigned i = 1, n = Line.Tokens.size(); i != n; ++i) { |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 150 | if (FitsOnALine) { |
| 151 | addTokenToState(false, false, State); |
| 152 | } else { |
| 153 | unsigned NoBreak = calcPenalty(State, false, UINT_MAX); |
| 154 | unsigned Break = calcPenalty(State, true, NoBreak); |
| 155 | addTokenToState(Break < NoBreak, false, State); |
| 156 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 157 | } |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 158 | return State.Column; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | private: |
| 162 | /// \brief The current state when indenting a unwrapped line. |
| 163 | /// |
| 164 | /// As the indenting tries different combinations this is copied by value. |
| 165 | struct IndentState { |
| 166 | /// \brief The number of used columns in the current line. |
| 167 | unsigned Column; |
| 168 | |
| 169 | /// \brief The number of tokens already consumed. |
| 170 | unsigned ConsumedTokens; |
| 171 | |
Daniel Jasper | a4974cf | 2012-12-24 16:43:00 +0000 | [diff] [blame] | 172 | /// \brief The parenthesis level of the first token on the current line. |
| 173 | unsigned StartOfLineLevel; |
| 174 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 175 | /// \brief The position to which a specific parenthesis level needs to be |
| 176 | /// indented. |
| 177 | std::vector<unsigned> Indent; |
| 178 | |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 179 | /// \brief The position of the last space on each level. |
| 180 | /// |
| 181 | /// Used e.g. to break like: |
| 182 | /// functionCall(Parameter, otherCall( |
| 183 | /// OtherParameter)); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 184 | std::vector<unsigned> LastSpace; |
| 185 | |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 186 | /// \brief The position the first "<<" operator encountered on each level. |
| 187 | /// |
| 188 | /// Used to align "<<" operators. 0 if no such operator has been encountered |
| 189 | /// on a level. |
| 190 | std::vector<unsigned> FirstLessLess; |
| 191 | |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 192 | /// \brief The column of the first variable in a for-loop declaration. |
| 193 | /// |
| 194 | /// Used to align the second variable if necessary. |
| 195 | unsigned ForLoopVariablePos; |
| 196 | |
| 197 | /// \brief \c true if this line contains a continued for-loop section. |
| 198 | bool LineContainsContinuedForLoopSection; |
| 199 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 200 | /// \brief Comparison operator to be able to used \c IndentState in \c map. |
| 201 | bool operator<(const IndentState &Other) const { |
| 202 | if (Other.ConsumedTokens != ConsumedTokens) |
| 203 | return Other.ConsumedTokens > ConsumedTokens; |
| 204 | if (Other.Column != Column) |
| 205 | return Other.Column > Column; |
Daniel Jasper | a4974cf | 2012-12-24 16:43:00 +0000 | [diff] [blame] | 206 | if (Other.StartOfLineLevel != StartOfLineLevel) |
| 207 | return Other.StartOfLineLevel > StartOfLineLevel; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 208 | if (Other.Indent.size() != Indent.size()) |
| 209 | return Other.Indent.size() > Indent.size(); |
| 210 | for (int i = 0, e = Indent.size(); i != e; ++i) { |
| 211 | if (Other.Indent[i] != Indent[i]) |
| 212 | return Other.Indent[i] > Indent[i]; |
| 213 | } |
| 214 | if (Other.LastSpace.size() != LastSpace.size()) |
| 215 | return Other.LastSpace.size() > LastSpace.size(); |
| 216 | for (int i = 0, e = LastSpace.size(); i != e; ++i) { |
| 217 | if (Other.LastSpace[i] != LastSpace[i]) |
| 218 | return Other.LastSpace[i] > LastSpace[i]; |
| 219 | } |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 220 | if (Other.FirstLessLess.size() != FirstLessLess.size()) |
| 221 | return Other.FirstLessLess.size() > FirstLessLess.size(); |
| 222 | for (int i = 0, e = FirstLessLess.size(); i != e; ++i) { |
| 223 | if (Other.FirstLessLess[i] != FirstLessLess[i]) |
| 224 | return Other.FirstLessLess[i] > FirstLessLess[i]; |
| 225 | } |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 226 | if (Other.ForLoopVariablePos != ForLoopVariablePos) |
| 227 | return Other.ForLoopVariablePos < ForLoopVariablePos; |
| 228 | if (Other.LineContainsContinuedForLoopSection != |
| 229 | LineContainsContinuedForLoopSection) |
| 230 | return LineContainsContinuedForLoopSection; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 231 | return false; |
| 232 | } |
| 233 | }; |
| 234 | |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 235 | /// \brief Appends the next token to \p State and updates information |
| 236 | /// necessary for indentation. |
| 237 | /// |
| 238 | /// Puts the token on the current line if \p Newline is \c true and adds a |
| 239 | /// line break and necessary indentation otherwise. |
| 240 | /// |
| 241 | /// If \p DryRun is \c false, also creates and stores the required |
| 242 | /// \c Replacement. |
| 243 | void addTokenToState(bool Newline, bool DryRun, IndentState &State) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 244 | unsigned Index = State.ConsumedTokens; |
| 245 | const FormatToken &Current = Line.Tokens[Index]; |
| 246 | const FormatToken &Previous = Line.Tokens[Index - 1]; |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 247 | unsigned ParenLevel = State.Indent.size() - 1; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 248 | |
| 249 | if (Newline) { |
Manuel Klimek | 060143e | 2013-01-02 18:33:23 +0000 | [diff] [blame] | 250 | unsigned WhitespaceStartColumn = State.Column; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 251 | if (Current.Tok.is(tok::string_literal) && |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 252 | Previous.Tok.is(tok::string_literal)) { |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 253 | State.Column = State.Column - Previous.TokenLength; |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 254 | } else if (Current.Tok.is(tok::lessless) && |
| 255 | State.FirstLessLess[ParenLevel] != 0) { |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 256 | State.Column = State.FirstLessLess[ParenLevel]; |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 257 | } else if (ParenLevel != 0 && |
| 258 | (Previous.Tok.is(tok::equal) || Current.Tok.is(tok::arrow) || |
| 259 | Current.Tok.is(tok::period))) { |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 260 | // Indent and extra 4 spaces after '=' as it continues an expression. |
| 261 | // Don't do that on the top level, as we already indent 4 there. |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 262 | State.Column = State.Indent[ParenLevel] + 4; |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 263 | } else if ( |
| 264 | Line.Tokens[0].Tok.is(tok::kw_for) && Previous.Tok.is(tok::comma)) { |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 265 | State.Column = State.ForLoopVariablePos; |
Daniel Jasper | 9a64fb5 | 2013-01-02 15:08:56 +0000 | [diff] [blame] | 266 | } else if (Annotations[Index - 1].ClosesTemplateDeclaration) { |
| 267 | State.Column = State.Indent[ParenLevel] - 4; |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 268 | } else { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 269 | State.Column = State.Indent[ParenLevel]; |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 270 | } |
| 271 | |
Daniel Jasper | a4974cf | 2012-12-24 16:43:00 +0000 | [diff] [blame] | 272 | State.StartOfLineLevel = ParenLevel + 1; |
| 273 | |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 274 | if (Line.Tokens[0].Tok.is(tok::kw_for)) |
| 275 | State.LineContainsContinuedForLoopSection = |
| 276 | Previous.Tok.isNot(tok::semi); |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 277 | |
Manuel Klimek | 060143e | 2013-01-02 18:33:23 +0000 | [diff] [blame] | 278 | if (!DryRun) { |
| 279 | if (!Line.InPPDirective) |
| 280 | replaceWhitespace(Current, 1, State.Column); |
| 281 | else |
| 282 | replacePPWhitespace(Current, 1, State.Column, WhitespaceStartColumn); |
| 283 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 284 | |
Daniel Jasper | a88bb45 | 2012-12-04 10:50:12 +0000 | [diff] [blame] | 285 | State.LastSpace[ParenLevel] = State.Indent[ParenLevel]; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 286 | if (Current.Tok.is(tok::colon) && |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 287 | Annotations[Index].Type != TokenAnnotation::TT_ConditionalExpr && |
| 288 | Annotations[0].Type != TokenAnnotation::TT_ObjCMethodSpecifier) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 289 | State.Indent[ParenLevel] += 2; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 290 | } else { |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 291 | if (Current.Tok.is(tok::equal) && Line.Tokens[0].Tok.is(tok::kw_for)) |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 292 | State.ForLoopVariablePos = State.Column - Previous.TokenLength; |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 293 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 294 | unsigned Spaces = Annotations[Index].SpaceRequiredBefore ? 1 : 0; |
| 295 | if (Annotations[Index].Type == TokenAnnotation::TT_LineComment) |
| 296 | Spaces = 2; |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 297 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 298 | if (!DryRun) |
| 299 | replaceWhitespace(Current, 0, Spaces); |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 300 | |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 301 | // FIXME: Look into using this alignment at other ParenLevels. |
| 302 | if (ParenLevel == 0 && (getPrecedence(Previous) == prec::Assignment || |
| 303 | Previous.Tok.is(tok::kw_return))) |
| 304 | State.Indent[ParenLevel] = State.Column + Spaces; |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 305 | if (Previous.Tok.is(tok::l_paren) || |
| 306 | Annotations[Index - 1].Type == TokenAnnotation::TT_TemplateOpener) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 307 | State.Indent[ParenLevel] = State.Column; |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 308 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 309 | // Top-level spaces are exempt as that mostly leads to better results. |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 310 | State.Column += Spaces; |
Daniel Jasper | a88bb45 | 2012-12-04 10:50:12 +0000 | [diff] [blame] | 311 | if (Spaces > 0 && ParenLevel != 0) |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 312 | State.LastSpace[ParenLevel] = State.Column; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 313 | } |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 314 | moveStateToNextToken(State); |
| 315 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 316 | |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 317 | /// \brief Mark the next token as consumed in \p State and modify its stacks |
| 318 | /// accordingly. |
| 319 | void moveStateToNextToken(IndentState &State) { |
| 320 | unsigned Index = State.ConsumedTokens; |
| 321 | const FormatToken &Current = Line.Tokens[Index]; |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 322 | unsigned ParenLevel = State.Indent.size() - 1; |
| 323 | |
| 324 | if (Current.Tok.is(tok::lessless) && State.FirstLessLess[ParenLevel] == 0) |
| 325 | State.FirstLessLess[ParenLevel] = State.Column; |
| 326 | |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 327 | State.Column += Current.TokenLength; |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 328 | |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 329 | // If we encounter an opening (, [, { or <, we add a level to our stacks to |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 330 | // prepare for the following tokens. |
| 331 | if (Current.Tok.is(tok::l_paren) || Current.Tok.is(tok::l_square) || |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 332 | Current.Tok.is(tok::l_brace) || |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 333 | Annotations[Index].Type == TokenAnnotation::TT_TemplateOpener) { |
| 334 | State.Indent.push_back(4 + State.LastSpace.back()); |
| 335 | State.LastSpace.push_back(State.LastSpace.back()); |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 336 | State.FirstLessLess.push_back(0); |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 337 | } |
| 338 | |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 339 | // If we encounter a closing ), ], } or >, we can remove a level from our |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 340 | // stacks. |
Daniel Jasper | a88bb45 | 2012-12-04 10:50:12 +0000 | [diff] [blame] | 341 | if (Current.Tok.is(tok::r_paren) || Current.Tok.is(tok::r_square) || |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 342 | (Current.Tok.is(tok::r_brace) && State.ConsumedTokens > 0) || |
Daniel Jasper | a88bb45 | 2012-12-04 10:50:12 +0000 | [diff] [blame] | 343 | Annotations[Index].Type == TokenAnnotation::TT_TemplateCloser) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 344 | State.Indent.pop_back(); |
| 345 | State.LastSpace.pop_back(); |
Daniel Jasper | 3b5943f | 2012-12-06 09:56:08 +0000 | [diff] [blame] | 346 | State.FirstLessLess.pop_back(); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | ++State.ConsumedTokens; |
| 350 | } |
| 351 | |
Daniel Jasper | 9a0b494 | 2012-12-17 14:34:14 +0000 | [diff] [blame] | 352 | /// \brief Calculate the panelty for splitting after the token at \p Index. |
| 353 | unsigned splitPenalty(unsigned Index) { |
| 354 | assert(Index < Line.Tokens.size() && |
| 355 | "Tried to calculate penalty for splitting after the last token"); |
| 356 | const FormatToken &Left = Line.Tokens[Index]; |
| 357 | const FormatToken &Right = Line.Tokens[Index + 1]; |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 358 | |
| 359 | // In for-loops, prefer breaking at ',' and ';'. |
| 360 | if (Line.Tokens[0].Tok.is(tok::kw_for) && |
| 361 | (Left.Tok.isNot(tok::comma) && Left.Tok.isNot(tok::semi))) |
| 362 | return 20; |
| 363 | |
Daniel Jasper | 9a64fb5 | 2013-01-02 15:08:56 +0000 | [diff] [blame] | 364 | if (Left.Tok.is(tok::semi) || Left.Tok.is(tok::comma) || |
| 365 | Annotations[Index].ClosesTemplateDeclaration) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 366 | return 0; |
Daniel Jasper | e2c7acf | 2012-12-24 00:13:23 +0000 | [diff] [blame] | 367 | if (Left.Tok.is(tok::l_paren)) |
Daniel Jasper | 723f030 | 2013-01-02 14:40:02 +0000 | [diff] [blame] | 368 | return 20; |
Daniel Jasper | 9a0b494 | 2012-12-17 14:34:14 +0000 | [diff] [blame] | 369 | |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 370 | prec::Level Level = getPrecedence(Line.Tokens[Index]); |
Daniel Jasper | e2c7acf | 2012-12-24 00:13:23 +0000 | [diff] [blame] | 371 | if (Level != prec::Unknown) |
| 372 | return Level; |
| 373 | |
Daniel Jasper | 9a0b494 | 2012-12-17 14:34:14 +0000 | [diff] [blame] | 374 | if (Right.Tok.is(tok::arrow) || Right.Tok.is(tok::period)) |
Daniel Jasper | 46a46a2 | 2013-01-07 07:13:20 +0000 | [diff] [blame] | 375 | return 150; |
Daniel Jasper | 9a0b494 | 2012-12-17 14:34:14 +0000 | [diff] [blame] | 376 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 377 | return 3; |
| 378 | } |
| 379 | |
| 380 | /// \brief Calculate the number of lines needed to format the remaining part |
| 381 | /// of the unwrapped line. |
| 382 | /// |
| 383 | /// Assumes the formatting so far has led to |
| 384 | /// the \c IndentState \p State. If \p NewLine is set, a new line will be |
| 385 | /// added after the previous token. |
| 386 | /// |
| 387 | /// \param StopAt is used for optimization. If we can determine that we'll |
| 388 | /// definitely need at least \p StopAt additional lines, we already know of a |
| 389 | /// better solution. |
| 390 | unsigned calcPenalty(IndentState State, bool NewLine, unsigned StopAt) { |
| 391 | // We are at the end of the unwrapped line, so we don't need any more lines. |
| 392 | if (State.ConsumedTokens >= Line.Tokens.size()) |
| 393 | return 0; |
| 394 | |
| 395 | if (!NewLine && Annotations[State.ConsumedTokens].MustBreakBefore) |
| 396 | return UINT_MAX; |
| 397 | if (NewLine && !Annotations[State.ConsumedTokens].CanBreakBefore) |
| 398 | return UINT_MAX; |
Daniel Jasper | a324a0e | 2012-12-21 14:37:20 +0000 | [diff] [blame] | 399 | if (!NewLine && Line.Tokens[State.ConsumedTokens - 1].Tok.is(tok::semi) && |
| 400 | State.LineContainsContinuedForLoopSection) |
| 401 | return UINT_MAX; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 402 | |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 403 | unsigned CurrentPenalty = 0; |
| 404 | if (NewLine) { |
| 405 | CurrentPenalty += Parameters.PenaltyIndentLevel * State.Indent.size() + |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 406 | splitPenalty(State.ConsumedTokens - 1); |
Daniel Jasper | a4974cf | 2012-12-24 16:43:00 +0000 | [diff] [blame] | 407 | } else { |
| 408 | if (State.Indent.size() < State.StartOfLineLevel) |
| 409 | CurrentPenalty += Parameters.PenaltyLevelDecrease * |
| 410 | (State.StartOfLineLevel - State.Indent.size()); |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 411 | } |
| 412 | |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 413 | addTokenToState(NewLine, true, State); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 414 | |
| 415 | // Exceeding column limit is bad. |
Manuel Klimek | 060143e | 2013-01-02 18:33:23 +0000 | [diff] [blame] | 416 | if (State.Column > Style.ColumnLimit - (Line.InPPDirective ? 1 : 0)) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 417 | return UINT_MAX; |
| 418 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 419 | if (StopAt <= CurrentPenalty) |
| 420 | return UINT_MAX; |
| 421 | StopAt -= CurrentPenalty; |
| 422 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 423 | StateMap::iterator I = Memory.find(State); |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 424 | if (I != Memory.end()) { |
| 425 | // If this state has already been examined, we can safely return the |
| 426 | // previous result if we |
| 427 | // - have not hit the optimatization (and thus returned UINT_MAX) OR |
| 428 | // - are now computing for a smaller or equal StopAt. |
| 429 | unsigned SavedResult = I->second.first; |
| 430 | unsigned SavedStopAt = I->second.second; |
Daniel Jasper | 9a0b494 | 2012-12-17 14:34:14 +0000 | [diff] [blame] | 431 | if (SavedResult != UINT_MAX) |
| 432 | return SavedResult + CurrentPenalty; |
| 433 | else if (StopAt <= SavedStopAt) |
| 434 | return UINT_MAX; |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 435 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 436 | |
| 437 | unsigned NoBreak = calcPenalty(State, false, StopAt); |
| 438 | unsigned WithBreak = calcPenalty(State, true, std::min(StopAt, NoBreak)); |
| 439 | unsigned Result = std::min(NoBreak, WithBreak); |
Daniel Jasper | 9a0b494 | 2012-12-17 14:34:14 +0000 | [diff] [blame] | 440 | |
| 441 | // We have to store 'Result' without adding 'CurrentPenalty' as the latter |
| 442 | // can depend on 'NewLine'. |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 443 | Memory[State] = std::pair<unsigned, unsigned>(Result, StopAt); |
Daniel Jasper | 9a0b494 | 2012-12-17 14:34:14 +0000 | [diff] [blame] | 444 | |
| 445 | return Result == UINT_MAX ? UINT_MAX : Result + CurrentPenalty; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | /// \brief Replaces the whitespace in front of \p Tok. Only call once for |
| 449 | /// each \c FormatToken. |
| 450 | void replaceWhitespace(const FormatToken &Tok, unsigned NewLines, |
| 451 | unsigned Spaces) { |
Manuel Klimek | 060143e | 2013-01-02 18:33:23 +0000 | [diff] [blame] | 452 | Replaces.insert(tooling::Replacement( |
| 453 | SourceMgr, Tok.WhiteSpaceStart, Tok.WhiteSpaceLength, |
| 454 | std::string(NewLines, '\n') + std::string(Spaces, ' '))); |
| 455 | } |
| 456 | |
| 457 | /// \brief Like \c replaceWhitespace, but additionally adds right-aligned |
| 458 | /// backslashes to escape newlines inside a preprocessor directive. |
| 459 | /// |
| 460 | /// This function and \c replaceWhitespace have the same behavior if |
| 461 | /// \c Newlines == 0. |
| 462 | void replacePPWhitespace(const FormatToken &Tok, unsigned NewLines, |
| 463 | unsigned Spaces, unsigned WhitespaceStartColumn) { |
Manuel Klimek | a080a18 | 2013-01-02 16:30:12 +0000 | [diff] [blame] | 464 | std::string NewLineText; |
Manuel Klimek | 060143e | 2013-01-02 18:33:23 +0000 | [diff] [blame] | 465 | if (NewLines > 0) { |
Manuel Klimek | a080a18 | 2013-01-02 16:30:12 +0000 | [diff] [blame] | 466 | unsigned Offset = |
Manuel Klimek | 060143e | 2013-01-02 18:33:23 +0000 | [diff] [blame] | 467 | std::min<int>(Style.ColumnLimit - 1, WhitespaceStartColumn); |
Manuel Klimek | a080a18 | 2013-01-02 16:30:12 +0000 | [diff] [blame] | 468 | for (unsigned i = 0; i < NewLines; ++i) { |
| 469 | NewLineText += std::string(Style.ColumnLimit - Offset - 1, ' '); |
| 470 | NewLineText += "\\\n"; |
| 471 | Offset = 0; |
| 472 | } |
| 473 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 474 | Replaces.insert(tooling::Replacement( |
| 475 | SourceMgr, Tok.WhiteSpaceStart, Tok.WhiteSpaceLength, |
Manuel Klimek | a080a18 | 2013-01-02 16:30:12 +0000 | [diff] [blame] | 476 | NewLineText + std::string(Spaces, ' '))); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | /// \brief Add a new line and the required indent before the first Token |
Alexander Kornienko | 720ffb6 | 2012-12-05 13:56:52 +0000 | [diff] [blame] | 480 | /// of the \c UnwrappedLine if there was no structural parsing error. |
| 481 | /// Returns the indent level of the \c UnwrappedLine. |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 482 | unsigned formatFirstToken() { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 483 | const FormatToken &Token = Line.Tokens[0]; |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 484 | if (!Token.WhiteSpaceStart.isValid() || StructuralError) |
| 485 | return SourceMgr.getSpellingColumnNumber(Token.Tok.getLocation()) - 1; |
| 486 | |
| 487 | unsigned Newlines = |
| 488 | std::min(Token.NewlinesBefore, Style.MaxEmptyLinesToKeep + 1); |
Manuel Klimek | f6fd00b | 2013-01-05 22:56:06 +0000 | [diff] [blame] | 489 | if (Newlines == 0 && !Token.IsFirst) |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 490 | Newlines = 1; |
| 491 | unsigned Indent = Line.Level * 2; |
Alexander Kornienko | 56e49c5 | 2012-12-10 16:34:48 +0000 | [diff] [blame] | 492 | if ((Token.Tok.is(tok::kw_public) || Token.Tok.is(tok::kw_protected) || |
| 493 | Token.Tok.is(tok::kw_private)) && |
| 494 | static_cast<int>(Indent) + Style.AccessModifierOffset >= 0) |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 495 | Indent += Style.AccessModifierOffset; |
Manuel Klimek | 060143e | 2013-01-02 18:33:23 +0000 | [diff] [blame] | 496 | if (!Line.InPPDirective || Token.HasUnescapedNewline) |
| 497 | replaceWhitespace(Token, Newlines, Indent); |
| 498 | else |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 499 | replacePPWhitespace(Token, Newlines, Indent, PreviousEndOfLineColumn); |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 500 | return Indent; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | FormatStyle Style; |
| 504 | SourceManager &SourceMgr; |
| 505 | const UnwrappedLine &Line; |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 506 | const unsigned PreviousEndOfLineColumn; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 507 | const std::vector<TokenAnnotation> &Annotations; |
| 508 | tooling::Replacements &Replaces; |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 509 | bool StructuralError; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 510 | |
Daniel Jasper | 33182dd | 2012-12-05 14:57:28 +0000 | [diff] [blame] | 511 | // A map from an indent state to a pair (Result, Used-StopAt). |
| 512 | typedef std::map<IndentState, std::pair<unsigned, unsigned> > StateMap; |
| 513 | StateMap Memory; |
| 514 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 515 | OptimizationParameters Parameters; |
| 516 | }; |
| 517 | |
| 518 | /// \brief Determines extra information about the tokens comprising an |
| 519 | /// \c UnwrappedLine. |
| 520 | class TokenAnnotator { |
| 521 | public: |
| 522 | TokenAnnotator(const UnwrappedLine &Line, const FormatStyle &Style, |
Manuel Klimek | 6cf5814 | 2013-01-07 08:54:53 +0000 | [diff] [blame] | 523 | SourceManager &SourceMgr, Lexer &Lex) |
| 524 | : Line(Line), Style(Style), SourceMgr(SourceMgr), Lex(Lex) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | /// \brief A parser that gathers additional information about tokens. |
| 528 | /// |
| 529 | /// The \c TokenAnnotator tries to matches parenthesis and square brakets and |
| 530 | /// store a parenthesis levels. It also tries to resolve matching "<" and ">" |
| 531 | /// into template parameter lists. |
| 532 | class AnnotatingParser { |
| 533 | public: |
Manuel Klimek | 0be4b36 | 2012-12-03 20:55:42 +0000 | [diff] [blame] | 534 | AnnotatingParser(const SmallVector<FormatToken, 16> &Tokens, |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 535 | std::vector<TokenAnnotation> &Annotations) |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 536 | : Tokens(Tokens), Annotations(Annotations), Index(0) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 537 | } |
| 538 | |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 539 | bool parseAngle() { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 540 | while (Index < Tokens.size()) { |
| 541 | if (Tokens[Index].Tok.is(tok::greater)) { |
Daniel Jasper | a88bb45 | 2012-12-04 10:50:12 +0000 | [diff] [blame] | 542 | Annotations[Index].Type = TokenAnnotation::TT_TemplateCloser; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 543 | next(); |
| 544 | return true; |
| 545 | } |
| 546 | if (Tokens[Index].Tok.is(tok::r_paren) || |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 547 | Tokens[Index].Tok.is(tok::r_square) || |
| 548 | Tokens[Index].Tok.is(tok::r_brace)) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 549 | return false; |
| 550 | if (Tokens[Index].Tok.is(tok::pipepipe) || |
| 551 | Tokens[Index].Tok.is(tok::ampamp) || |
| 552 | Tokens[Index].Tok.is(tok::question) || |
| 553 | Tokens[Index].Tok.is(tok::colon)) |
| 554 | return false; |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 555 | if (!consumeToken()) |
| 556 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 557 | } |
| 558 | return false; |
| 559 | } |
| 560 | |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 561 | bool parseParens() { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 562 | while (Index < Tokens.size()) { |
| 563 | if (Tokens[Index].Tok.is(tok::r_paren)) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 564 | next(); |
| 565 | return true; |
| 566 | } |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 567 | if (Tokens[Index].Tok.is(tok::r_square) || |
| 568 | Tokens[Index].Tok.is(tok::r_brace)) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 569 | return false; |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 570 | if (!consumeToken()) |
| 571 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 572 | } |
| 573 | return false; |
| 574 | } |
| 575 | |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 576 | bool parseSquare() { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 577 | while (Index < Tokens.size()) { |
| 578 | if (Tokens[Index].Tok.is(tok::r_square)) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 579 | next(); |
| 580 | return true; |
| 581 | } |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 582 | if (Tokens[Index].Tok.is(tok::r_paren) || |
| 583 | Tokens[Index].Tok.is(tok::r_brace)) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 584 | return false; |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 585 | if (!consumeToken()) |
| 586 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 587 | } |
| 588 | return false; |
| 589 | } |
| 590 | |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 591 | bool parseConditional() { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 592 | while (Index < Tokens.size()) { |
| 593 | if (Tokens[Index].Tok.is(tok::colon)) { |
| 594 | Annotations[Index].Type = TokenAnnotation::TT_ConditionalExpr; |
| 595 | next(); |
| 596 | return true; |
| 597 | } |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 598 | if (!consumeToken()) |
| 599 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 600 | } |
| 601 | return false; |
| 602 | } |
| 603 | |
Daniel Jasper | 9a64fb5 | 2013-01-02 15:08:56 +0000 | [diff] [blame] | 604 | bool parseTemplateDeclaration() { |
| 605 | if (Index < Tokens.size() && Tokens[Index].Tok.is(tok::less)) { |
| 606 | Annotations[Index].Type = TokenAnnotation::TT_TemplateOpener; |
| 607 | next(); |
| 608 | if (!parseAngle()) |
| 609 | return false; |
| 610 | Annotations[Index - 1].ClosesTemplateDeclaration = true; |
| 611 | parseLine(); |
| 612 | return true; |
| 613 | } |
| 614 | return false; |
| 615 | } |
| 616 | |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 617 | bool consumeToken() { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 618 | unsigned CurrentIndex = Index; |
| 619 | next(); |
| 620 | switch (Tokens[CurrentIndex].Tok.getKind()) { |
| 621 | case tok::l_paren: |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 622 | if (!parseParens()) |
| 623 | return false; |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 624 | if (Index < Tokens.size() && Tokens[Index].Tok.is(tok::colon)) { |
| 625 | Annotations[Index].Type = TokenAnnotation::TT_CtorInitializerColon; |
| 626 | next(); |
| 627 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 628 | break; |
| 629 | case tok::l_square: |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 630 | if (!parseSquare()) |
| 631 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 632 | break; |
| 633 | case tok::less: |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 634 | if (parseAngle()) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 635 | Annotations[CurrentIndex].Type = TokenAnnotation::TT_TemplateOpener; |
| 636 | else { |
| 637 | Annotations[CurrentIndex].Type = TokenAnnotation::TT_BinaryOperator; |
| 638 | Index = CurrentIndex + 1; |
| 639 | } |
| 640 | break; |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 641 | case tok::r_paren: |
| 642 | case tok::r_square: |
| 643 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 644 | case tok::greater: |
| 645 | Annotations[CurrentIndex].Type = TokenAnnotation::TT_BinaryOperator; |
| 646 | break; |
| 647 | case tok::kw_operator: |
Daniel Jasper | f6aef6a | 2012-12-24 10:56:04 +0000 | [diff] [blame] | 648 | if (Tokens[Index].Tok.is(tok::l_paren)) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 649 | Annotations[Index].Type = TokenAnnotation::TT_OverloadedOperator; |
Daniel Jasper | f6aef6a | 2012-12-24 10:56:04 +0000 | [diff] [blame] | 650 | next(); |
| 651 | if (Index < Tokens.size() && Tokens[Index].Tok.is(tok::r_paren)) { |
| 652 | Annotations[Index].Type = TokenAnnotation::TT_OverloadedOperator; |
| 653 | next(); |
| 654 | } |
| 655 | } else { |
| 656 | while (Index < Tokens.size() && !Tokens[Index].Tok.is(tok::l_paren)) { |
| 657 | Annotations[Index].Type = TokenAnnotation::TT_OverloadedOperator; |
| 658 | next(); |
| 659 | } |
| 660 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 661 | break; |
| 662 | case tok::question: |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 663 | parseConditional(); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 664 | break; |
Daniel Jasper | 9a64fb5 | 2013-01-02 15:08:56 +0000 | [diff] [blame] | 665 | case tok::kw_template: |
| 666 | parseTemplateDeclaration(); |
| 667 | break; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 668 | default: |
| 669 | break; |
| 670 | } |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 671 | return true; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 672 | } |
| 673 | |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 674 | void parseIncludeDirective() { |
| 675 | while (Index < Tokens.size()) { |
| 676 | if (Tokens[Index].Tok.is(tok::slash)) |
| 677 | Annotations[Index].Type = TokenAnnotation::TT_DirectorySeparator; |
| 678 | else if (Tokens[Index].Tok.is(tok::less)) |
| 679 | Annotations[Index].Type = TokenAnnotation::TT_TemplateOpener; |
| 680 | else if (Tokens[Index].Tok.is(tok::greater)) |
| 681 | Annotations[Index].Type = TokenAnnotation::TT_TemplateCloser; |
| 682 | next(); |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | void parsePreprocessorDirective() { |
| 687 | next(); |
| 688 | if (Index >= Tokens.size()) |
| 689 | return; |
Manuel Klimek | f6fd00b | 2013-01-05 22:56:06 +0000 | [diff] [blame] | 690 | // Hashes in the middle of a line can lead to any strange token |
| 691 | // sequence. |
| 692 | if (Tokens[Index].Tok.getIdentifierInfo() == NULL) |
| 693 | return; |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 694 | switch (Tokens[Index].Tok.getIdentifierInfo()->getPPKeywordID()) { |
| 695 | case tok::pp_include: |
Nico Weber | b23ae0c | 2012-12-21 18:21:56 +0000 | [diff] [blame] | 696 | case tok::pp_import: |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 697 | parseIncludeDirective(); |
| 698 | break; |
| 699 | default: |
| 700 | break; |
| 701 | } |
| 702 | } |
| 703 | |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 704 | bool parseLine() { |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 705 | if (Tokens[Index].Tok.is(tok::hash)) { |
| 706 | parsePreprocessorDirective(); |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 707 | return true; |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 708 | } |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 709 | while (Index < Tokens.size()) { |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 710 | if (!consumeToken()) |
| 711 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 712 | } |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 713 | return true; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | void next() { |
| 717 | ++Index; |
| 718 | } |
| 719 | |
| 720 | private: |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 721 | const SmallVector<FormatToken, 16> &Tokens; |
| 722 | std::vector<TokenAnnotation> &Annotations; |
| 723 | unsigned Index; |
| 724 | }; |
| 725 | |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 726 | bool annotate() { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 727 | Annotations.clear(); |
| 728 | for (int i = 0, e = Line.Tokens.size(); i != e; ++i) { |
| 729 | Annotations.push_back(TokenAnnotation()); |
| 730 | } |
| 731 | |
Manuel Klimek | 0be4b36 | 2012-12-03 20:55:42 +0000 | [diff] [blame] | 732 | AnnotatingParser Parser(Line.Tokens, Annotations); |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 733 | if (!Parser.parseLine()) |
| 734 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 735 | |
| 736 | determineTokenTypes(); |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 737 | bool IsObjCMethodDecl = |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 738 | (Line.Tokens.size() > 0 && |
| 739 | (Annotations[0].Type == TokenAnnotation::TT_ObjCMethodSpecifier)); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 740 | for (int i = 1, e = Line.Tokens.size(); i != e; ++i) { |
| 741 | TokenAnnotation &Annotation = Annotations[i]; |
| 742 | |
Daniel Jasper | 4dc41de | 2013-01-02 08:44:14 +0000 | [diff] [blame] | 743 | Annotation.CanBreakBefore = canBreakBefore(i); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 744 | |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 745 | if (Annotation.Type == TokenAnnotation::TT_CtorInitializerColon) { |
| 746 | Annotation.MustBreakBefore = true; |
| 747 | Annotation.SpaceRequiredBefore = true; |
Daniel Jasper | f6aef6a | 2012-12-24 10:56:04 +0000 | [diff] [blame] | 748 | } else if (Annotation.Type == TokenAnnotation::TT_OverloadedOperator) { |
| 749 | Annotation.SpaceRequiredBefore = |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 750 | Line.Tokens[i].Tok.is(tok::identifier) || |
| 751 | Line.Tokens[i].Tok.is(tok::kw_new) || |
| 752 | Line.Tokens[i].Tok.is(tok::kw_delete); |
Daniel Jasper | f6aef6a | 2012-12-24 10:56:04 +0000 | [diff] [blame] | 753 | } else if ( |
| 754 | Annotations[i - 1].Type == TokenAnnotation::TT_OverloadedOperator) { |
| 755 | Annotation.SpaceRequiredBefore = false; |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 756 | } else if (IsObjCMethodDecl && Line.Tokens[i].Tok.is(tok::identifier) && |
| 757 | (i != e - 1) && Line.Tokens[i + 1].Tok.is(tok::colon) && |
| 758 | Line.Tokens[i - 1].Tok.is(tok::identifier)) { |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 759 | Annotation.CanBreakBefore = true; |
| 760 | Annotation.SpaceRequiredBefore = true; |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 761 | } else if (IsObjCMethodDecl && Line.Tokens[i].Tok.is(tok::identifier) && |
| 762 | Line.Tokens[i - 1].Tok.is(tok::l_paren) && |
| 763 | Line.Tokens[i - 2].Tok.is(tok::colon)) { |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 764 | // Don't break this identifier as ':' or identifier |
| 765 | // before it will break. |
| 766 | Annotation.CanBreakBefore = false; |
| 767 | } else if (Line.Tokens[i].Tok.is(tok::at) && |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 768 | Line.Tokens[i - 2].Tok.is(tok::at)) { |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 769 | // Don't put two objc's '@' on the same line. This could happen, |
Fariborz Jahanian | 5f04ef5 | 2012-12-21 17:14:23 +0000 | [diff] [blame] | 770 | // as in, @optional @property ... |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 771 | Annotation.MustBreakBefore = true; |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 772 | } else if (Line.Tokens[i].Tok.is(tok::colon)) { |
Daniel Jasper | dfbb319 | 2012-12-05 16:24:48 +0000 | [diff] [blame] | 773 | Annotation.SpaceRequiredBefore = |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 774 | Line.Tokens[0].Tok.isNot(tok::kw_case) && !IsObjCMethodDecl && |
| 775 | (i != e - 1); |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 776 | // Don't break at ':' if identifier before it can beak. |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 777 | if (IsObjCMethodDecl && Line.Tokens[i - 1].Tok.is(tok::identifier) && |
| 778 | Annotations[i - 1].CanBreakBefore) |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 779 | Annotation.CanBreakBefore = false; |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 780 | } else if ( |
| 781 | Annotations[i - 1].Type == TokenAnnotation::TT_ObjCMethodSpecifier) { |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 782 | Annotation.SpaceRequiredBefore = true; |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 783 | } else if (Annotations[i - 1].Type == TokenAnnotation::TT_UnaryOperator) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 784 | Annotation.SpaceRequiredBefore = false; |
| 785 | } else if (Annotation.Type == TokenAnnotation::TT_UnaryOperator) { |
| 786 | Annotation.SpaceRequiredBefore = |
Daniel Jasper | 8822d3a | 2012-12-04 13:02:32 +0000 | [diff] [blame] | 787 | Line.Tokens[i - 1].Tok.isNot(tok::l_paren) && |
| 788 | Line.Tokens[i - 1].Tok.isNot(tok::l_square); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 789 | } else if (Line.Tokens[i - 1].Tok.is(tok::greater) && |
| 790 | Line.Tokens[i].Tok.is(tok::greater)) { |
Daniel Jasper | 8822d3a | 2012-12-04 13:02:32 +0000 | [diff] [blame] | 791 | if (Annotation.Type == TokenAnnotation::TT_TemplateCloser && |
Daniel Jasper | 2040915 | 2012-12-04 14:54:30 +0000 | [diff] [blame] | 792 | Annotations[i - 1].Type == TokenAnnotation::TT_TemplateCloser) |
Daniel Jasper | a88bb45 | 2012-12-04 10:50:12 +0000 | [diff] [blame] | 793 | Annotation.SpaceRequiredBefore = Style.SplitTemplateClosingGreater; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 794 | else |
| 795 | Annotation.SpaceRequiredBefore = false; |
| 796 | } else if ( |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 797 | Annotation.Type == TokenAnnotation::TT_DirectorySeparator || |
| 798 | Annotations[i - 1].Type == TokenAnnotation::TT_DirectorySeparator) { |
| 799 | Annotation.SpaceRequiredBefore = false; |
| 800 | } else if ( |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 801 | Annotation.Type == TokenAnnotation::TT_BinaryOperator || |
| 802 | Annotations[i - 1].Type == TokenAnnotation::TT_BinaryOperator) { |
| 803 | Annotation.SpaceRequiredBefore = true; |
| 804 | } else if ( |
Daniel Jasper | a88bb45 | 2012-12-04 10:50:12 +0000 | [diff] [blame] | 805 | Annotations[i - 1].Type == TokenAnnotation::TT_TemplateCloser && |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 806 | Line.Tokens[i].Tok.is(tok::l_paren)) { |
| 807 | Annotation.SpaceRequiredBefore = false; |
Daniel Jasper | 8822d3a | 2012-12-04 13:02:32 +0000 | [diff] [blame] | 808 | } else if (Line.Tokens[i].Tok.is(tok::less) && |
| 809 | Line.Tokens[0].Tok.is(tok::hash)) { |
| 810 | Annotation.SpaceRequiredBefore = true; |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 811 | } else if (IsObjCMethodDecl && Line.Tokens[i - 1].Tok.is(tok::r_paren) && |
| 812 | Line.Tokens[i].Tok.is(tok::identifier)) { |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 813 | // Don't space between ')' and <id> |
| 814 | Annotation.SpaceRequiredBefore = false; |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 815 | } else if (IsObjCMethodDecl && Line.Tokens[i - 1].Tok.is(tok::colon) && |
| 816 | Line.Tokens[i].Tok.is(tok::l_paren)) { |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 817 | // Don't space between ':' and '(' |
| 818 | Annotation.SpaceRequiredBefore = false; |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 819 | } else if (Annotation.Type == TokenAnnotation::TT_TrailingUnaryOperator) { |
| 820 | Annotation.SpaceRequiredBefore = false; |
| 821 | } else { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 822 | Annotation.SpaceRequiredBefore = |
| 823 | spaceRequiredBetween(Line.Tokens[i - 1].Tok, Line.Tokens[i].Tok); |
| 824 | } |
| 825 | |
| 826 | if (Annotations[i - 1].Type == TokenAnnotation::TT_LineComment || |
| 827 | (Line.Tokens[i].Tok.is(tok::string_literal) && |
| 828 | Line.Tokens[i - 1].Tok.is(tok::string_literal))) { |
| 829 | Annotation.MustBreakBefore = true; |
| 830 | } |
| 831 | |
| 832 | if (Annotation.MustBreakBefore) |
| 833 | Annotation.CanBreakBefore = true; |
| 834 | } |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 835 | return true; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 836 | } |
| 837 | |
| 838 | const std::vector<TokenAnnotation> &getAnnotations() { |
| 839 | return Annotations; |
| 840 | } |
| 841 | |
| 842 | private: |
| 843 | void determineTokenTypes() { |
Nico Weber | 00d5a04 | 2012-12-23 01:07:46 +0000 | [diff] [blame] | 844 | bool IsRHS = false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 845 | for (int i = 0, e = Line.Tokens.size(); i != e; ++i) { |
| 846 | TokenAnnotation &Annotation = Annotations[i]; |
| 847 | const FormatToken &Tok = Line.Tokens[i]; |
| 848 | |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 849 | if (getPrecedence(Tok) == prec::Assignment) |
Nico Weber | 00d5a04 | 2012-12-23 01:07:46 +0000 | [diff] [blame] | 850 | IsRHS = true; |
| 851 | else if (Tok.Tok.is(tok::kw_return)) |
| 852 | IsRHS = true; |
Daniel Jasper | 112fb27 | 2012-12-05 07:51:39 +0000 | [diff] [blame] | 853 | |
Daniel Jasper | 675d2e3 | 2012-12-21 10:20:02 +0000 | [diff] [blame] | 854 | if (Annotation.Type != TokenAnnotation::TT_Unknown) |
| 855 | continue; |
| 856 | |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 857 | if (Tok.Tok.is(tok::star) || Tok.Tok.is(tok::amp)) { |
Nico Weber | 00d5a04 | 2012-12-23 01:07:46 +0000 | [diff] [blame] | 858 | Annotation.Type = determineStarAmpUsage(i, IsRHS); |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 859 | } else if (Tok.Tok.is(tok::minus) || Tok.Tok.is(tok::plus)) { |
| 860 | Annotation.Type = determinePlusMinusUsage(i); |
| 861 | } else if (Tok.Tok.is(tok::minusminus) || Tok.Tok.is(tok::plusplus)) { |
| 862 | Annotation.Type = determineIncrementUsage(i); |
| 863 | } else if (Tok.Tok.is(tok::exclaim)) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 864 | Annotation.Type = TokenAnnotation::TT_UnaryOperator; |
Daniel Jasper | 675d2e3 | 2012-12-21 10:20:02 +0000 | [diff] [blame] | 865 | } else if (isBinaryOperator(Line.Tokens[i])) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 866 | Annotation.Type = TokenAnnotation::TT_BinaryOperator; |
Daniel Jasper | 675d2e3 | 2012-12-21 10:20:02 +0000 | [diff] [blame] | 867 | } else if (Tok.Tok.is(tok::comment)) { |
Manuel Klimek | 6cf5814 | 2013-01-07 08:54:53 +0000 | [diff] [blame] | 868 | std::string Data( |
| 869 | Lexer::getSpelling(Tok.Tok, SourceMgr, Lex.getLangOpts())); |
| 870 | if (StringRef(Data).startswith("//")) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 871 | Annotation.Type = TokenAnnotation::TT_LineComment; |
| 872 | else |
| 873 | Annotation.Type = TokenAnnotation::TT_BlockComment; |
| 874 | } |
| 875 | } |
| 876 | } |
| 877 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 878 | bool isBinaryOperator(const FormatToken &Tok) { |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 879 | // Comma is a binary operator, but does not behave as such wrt. formatting. |
Daniel Jasper | cf225b6 | 2012-12-24 13:43:52 +0000 | [diff] [blame] | 880 | return getPrecedence(Tok) > prec::Comma; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 881 | } |
| 882 | |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 883 | TokenAnnotation::TokenType determineStarAmpUsage(unsigned Index, bool IsRHS) { |
Daniel Jasper | ba3d307 | 2013-01-02 17:21:36 +0000 | [diff] [blame] | 884 | if (Index == 0) |
| 885 | return TokenAnnotation::TT_UnaryOperator; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 886 | if (Index == Annotations.size()) |
| 887 | return TokenAnnotation::TT_Unknown; |
Daniel Jasper | ef5b9c3 | 2013-01-02 15:46:59 +0000 | [diff] [blame] | 888 | const FormatToken &PrevToken = Line.Tokens[Index - 1]; |
| 889 | const FormatToken &NextToken = Line.Tokens[Index + 1]; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 890 | |
Daniel Jasper | 9bb0d28 | 2013-01-04 20:46:38 +0000 | [diff] [blame] | 891 | if (PrevToken.Tok.is(tok::l_paren) || PrevToken.Tok.is(tok::l_square) || |
| 892 | PrevToken.Tok.is(tok::comma) || PrevToken.Tok.is(tok::kw_return) || |
| 893 | PrevToken.Tok.is(tok::colon) || |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 894 | Annotations[Index - 1].Type == TokenAnnotation::TT_BinaryOperator) |
| 895 | return TokenAnnotation::TT_UnaryOperator; |
| 896 | |
Daniel Jasper | ef5b9c3 | 2013-01-02 15:46:59 +0000 | [diff] [blame] | 897 | if (PrevToken.Tok.isLiteral() || NextToken.Tok.isLiteral() || |
Daniel Jasper | ba3d307 | 2013-01-02 17:21:36 +0000 | [diff] [blame] | 898 | NextToken.Tok.is(tok::plus) || NextToken.Tok.is(tok::minus) || |
| 899 | NextToken.Tok.is(tok::plusplus) || NextToken.Tok.is(tok::minusminus) || |
| 900 | NextToken.Tok.is(tok::tilde) || NextToken.Tok.is(tok::exclaim) || |
| 901 | NextToken.Tok.is(tok::kw_alignof) || NextToken.Tok.is(tok::kw_sizeof)) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 902 | return TokenAnnotation::TT_BinaryOperator; |
| 903 | |
Daniel Jasper | ef5b9c3 | 2013-01-02 15:46:59 +0000 | [diff] [blame] | 904 | if (NextToken.Tok.is(tok::comma) || NextToken.Tok.is(tok::r_paren) || |
| 905 | NextToken.Tok.is(tok::greater)) |
| 906 | return TokenAnnotation::TT_PointerOrReference; |
| 907 | |
Daniel Jasper | 112fb27 | 2012-12-05 07:51:39 +0000 | [diff] [blame] | 908 | // It is very unlikely that we are going to find a pointer or reference type |
| 909 | // definition on the RHS of an assignment. |
Nico Weber | 00d5a04 | 2012-12-23 01:07:46 +0000 | [diff] [blame] | 910 | if (IsRHS) |
Daniel Jasper | 112fb27 | 2012-12-05 07:51:39 +0000 | [diff] [blame] | 911 | return TokenAnnotation::TT_BinaryOperator; |
| 912 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 913 | return TokenAnnotation::TT_PointerOrReference; |
| 914 | } |
| 915 | |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 916 | TokenAnnotation::TokenType determinePlusMinusUsage(unsigned Index) { |
| 917 | // At the start of the line, +/- specific ObjectiveC method declarations. |
| 918 | if (Index == 0) |
| 919 | return TokenAnnotation::TT_ObjCMethodSpecifier; |
| 920 | |
| 921 | // Use heuristics to recognize unary operators. |
| 922 | const Token &PreviousTok = Line.Tokens[Index - 1].Tok; |
| 923 | if (PreviousTok.is(tok::equal) || PreviousTok.is(tok::l_paren) || |
| 924 | PreviousTok.is(tok::comma) || PreviousTok.is(tok::l_square) || |
Daniel Jasper | 1f0754b | 2013-01-02 15:26:16 +0000 | [diff] [blame] | 925 | PreviousTok.is(tok::question) || PreviousTok.is(tok::colon) || |
| 926 | PreviousTok.is(tok::kw_return) || PreviousTok.is(tok::kw_case)) |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 927 | return TokenAnnotation::TT_UnaryOperator; |
| 928 | |
| 929 | // There can't be to consecutive binary operators. |
| 930 | if (Annotations[Index - 1].Type == TokenAnnotation::TT_BinaryOperator) |
| 931 | return TokenAnnotation::TT_UnaryOperator; |
| 932 | |
| 933 | // Fall back to marking the token as binary operator. |
| 934 | return TokenAnnotation::TT_BinaryOperator; |
| 935 | } |
| 936 | |
| 937 | /// \brief Determine whether ++/-- are pre- or post-increments/-decrements. |
| 938 | TokenAnnotation::TokenType determineIncrementUsage(unsigned Index) { |
| 939 | if (Index != 0 && Line.Tokens[Index - 1].Tok.is(tok::identifier)) |
| 940 | return TokenAnnotation::TT_TrailingUnaryOperator; |
| 941 | |
| 942 | return TokenAnnotation::TT_UnaryOperator; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 943 | } |
| 944 | |
| 945 | bool spaceRequiredBetween(Token Left, Token Right) { |
Daniel Jasper | 8b39c66 | 2012-12-10 18:59:13 +0000 | [diff] [blame] | 946 | if (Right.is(tok::r_paren) || Right.is(tok::semi) || Right.is(tok::comma)) |
| 947 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 948 | if (Left.is(tok::kw_template) && Right.is(tok::less)) |
| 949 | return true; |
| 950 | if (Left.is(tok::arrow) || Right.is(tok::arrow)) |
| 951 | return false; |
| 952 | if (Left.is(tok::exclaim) || Left.is(tok::tilde)) |
| 953 | return false; |
Fariborz Jahanian | 154120c | 2012-12-20 19:54:13 +0000 | [diff] [blame] | 954 | if (Left.is(tok::at) && Right.is(tok::identifier)) |
| 955 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 956 | if (Left.is(tok::less) || Right.is(tok::greater) || Right.is(tok::less)) |
| 957 | return false; |
Daniel Jasper | c74e279 | 2012-12-07 09:52:15 +0000 | [diff] [blame] | 958 | if (Right.is(tok::amp) || Right.is(tok::star)) |
| 959 | return Left.isLiteral() || |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 960 | (Left.isNot(tok::star) && Left.isNot(tok::amp) && |
| 961 | !Style.PointerAndReferenceBindToType); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 962 | if (Left.is(tok::amp) || Left.is(tok::star)) |
| 963 | return Right.isLiteral() || Style.PointerAndReferenceBindToType; |
| 964 | if (Right.is(tok::star) && Left.is(tok::l_paren)) |
| 965 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 966 | if (Left.is(tok::l_square) || Right.is(tok::l_square) || |
| 967 | Right.is(tok::r_square)) |
| 968 | return false; |
Daniel Jasper | c74e279 | 2012-12-07 09:52:15 +0000 | [diff] [blame] | 969 | if (Left.is(tok::coloncolon) || |
| 970 | (Right.is(tok::coloncolon) && |
| 971 | (Left.is(tok::identifier) || Left.is(tok::greater)))) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 972 | return false; |
| 973 | if (Left.is(tok::period) || Right.is(tok::period)) |
| 974 | return false; |
| 975 | if (Left.is(tok::colon) || Right.is(tok::colon)) |
| 976 | return true; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 977 | if (Left.is(tok::l_paren)) |
| 978 | return false; |
| 979 | if (Left.is(tok::hash)) |
| 980 | return false; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 981 | if (Right.is(tok::l_paren)) { |
Daniel Jasper | 98e6b4a | 2012-12-21 09:41:31 +0000 | [diff] [blame] | 982 | return Left.is(tok::kw_if) || Left.is(tok::kw_for) || |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 983 | Left.is(tok::kw_while) || Left.is(tok::kw_switch) || |
| 984 | (Left.isNot(tok::identifier) && Left.isNot(tok::kw_sizeof) && |
Daniel Jasper | ba3d307 | 2013-01-02 17:21:36 +0000 | [diff] [blame] | 985 | Left.isNot(tok::kw_typeof) && Left.isNot(tok::kw_alignof)); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 986 | } |
| 987 | return true; |
| 988 | } |
| 989 | |
Daniel Jasper | 4dc41de | 2013-01-02 08:44:14 +0000 | [diff] [blame] | 990 | bool canBreakBefore(unsigned i) { |
Daniel Jasper | 5eda31e | 2013-01-02 18:30:06 +0000 | [diff] [blame] | 991 | if (Annotations[i - 1].ClosesTemplateDeclaration) |
| 992 | return true; |
Daniel Jasper | 4dc41de | 2013-01-02 08:44:14 +0000 | [diff] [blame] | 993 | if (Annotations[i - 1].Type == TokenAnnotation::TT_PointerOrReference || |
Daniel Jasper | 5eda31e | 2013-01-02 18:30:06 +0000 | [diff] [blame] | 994 | Annotations[i - 1].Type == TokenAnnotation::TT_TemplateCloser || |
Daniel Jasper | 4dc41de | 2013-01-02 08:44:14 +0000 | [diff] [blame] | 995 | Annotations[i].Type == TokenAnnotation::TT_ConditionalExpr) { |
| 996 | return false; |
| 997 | } |
| 998 | const FormatToken &Left = Line.Tokens[i - 1]; |
| 999 | const FormatToken &Right = Line.Tokens[i]; |
Daniel Jasper | 05b1ac8 | 2012-12-17 11:29:41 +0000 | [diff] [blame] | 1000 | if (Right.Tok.is(tok::r_paren) || Right.Tok.is(tok::l_brace) || |
| 1001 | Right.Tok.is(tok::comment) || Right.Tok.is(tok::greater)) |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1002 | return false; |
Daniel Jasper | 675d2e3 | 2012-12-21 10:20:02 +0000 | [diff] [blame] | 1003 | return (isBinaryOperator(Left) && Left.Tok.isNot(tok::lessless)) || |
Daniel Jasper | d7610b8 | 2012-12-24 16:51:15 +0000 | [diff] [blame] | 1004 | Left.Tok.is(tok::comma) || Right.Tok.is(tok::lessless) || |
| 1005 | Right.Tok.is(tok::arrow) || Right.Tok.is(tok::period) || |
| 1006 | Right.Tok.is(tok::colon) || Left.Tok.is(tok::semi) || |
| 1007 | Left.Tok.is(tok::l_brace) || |
| 1008 | (Left.Tok.is(tok::l_paren) && !Right.Tok.is(tok::r_paren)); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1009 | } |
| 1010 | |
| 1011 | const UnwrappedLine &Line; |
| 1012 | FormatStyle Style; |
| 1013 | SourceManager &SourceMgr; |
Manuel Klimek | 6cf5814 | 2013-01-07 08:54:53 +0000 | [diff] [blame] | 1014 | Lexer &Lex; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1015 | std::vector<TokenAnnotation> Annotations; |
| 1016 | }; |
| 1017 | |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1018 | class LexerBasedFormatTokenSource : public FormatTokenSource { |
| 1019 | public: |
| 1020 | LexerBasedFormatTokenSource(Lexer &Lex, SourceManager &SourceMgr) |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 1021 | : GreaterStashed(false), Lex(Lex), SourceMgr(SourceMgr), |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1022 | IdentTable(Lex.getLangOpts()) { |
| 1023 | Lex.SetKeepWhitespaceMode(true); |
| 1024 | } |
| 1025 | |
| 1026 | virtual FormatToken getNextToken() { |
| 1027 | if (GreaterStashed) { |
| 1028 | FormatTok.NewlinesBefore = 0; |
| 1029 | FormatTok.WhiteSpaceStart = |
| 1030 | FormatTok.Tok.getLocation().getLocWithOffset(1); |
| 1031 | FormatTok.WhiteSpaceLength = 0; |
| 1032 | GreaterStashed = false; |
| 1033 | return FormatTok; |
| 1034 | } |
| 1035 | |
| 1036 | FormatTok = FormatToken(); |
| 1037 | Lex.LexFromRawLexer(FormatTok.Tok); |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 1038 | StringRef Text = rawTokenText(FormatTok.Tok); |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1039 | FormatTok.WhiteSpaceStart = FormatTok.Tok.getLocation(); |
Manuel Klimek | f6fd00b | 2013-01-05 22:56:06 +0000 | [diff] [blame] | 1040 | if (SourceMgr.getFileOffset(FormatTok.WhiteSpaceStart) == 0) |
| 1041 | FormatTok.IsFirst = true; |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1042 | |
| 1043 | // Consume and record whitespace until we find a significant token. |
| 1044 | while (FormatTok.Tok.is(tok::unknown)) { |
Manuel Klimek | a080a18 | 2013-01-02 16:30:12 +0000 | [diff] [blame] | 1045 | FormatTok.NewlinesBefore += Text.count('\n'); |
| 1046 | FormatTok.HasUnescapedNewline = |
| 1047 | Text.count("\\\n") != FormatTok.NewlinesBefore; |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1048 | FormatTok.WhiteSpaceLength += FormatTok.Tok.getLength(); |
| 1049 | |
| 1050 | if (FormatTok.Tok.is(tok::eof)) |
| 1051 | return FormatTok; |
| 1052 | Lex.LexFromRawLexer(FormatTok.Tok); |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 1053 | Text = rawTokenText(FormatTok.Tok); |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1054 | } |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 1055 | |
| 1056 | // Now FormatTok is the next non-whitespace token. |
| 1057 | FormatTok.TokenLength = Text.size(); |
| 1058 | |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1059 | // In case the token starts with escaped newlines, we want to |
| 1060 | // take them into account as whitespace - this pattern is quite frequent |
| 1061 | // in macro definitions. |
| 1062 | // FIXME: What do we want to do with other escaped spaces, and escaped |
| 1063 | // spaces or newlines in the middle of tokens? |
| 1064 | // FIXME: Add a more explicit test. |
| 1065 | unsigned i = 0; |
| 1066 | while (i + 1 < Text.size() && Text[i] == '\\' && Text[i+1] == '\n') { |
| 1067 | FormatTok.WhiteSpaceLength += 2; |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 1068 | FormatTok.TokenLength -= 2; |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1069 | i += 2; |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1070 | } |
| 1071 | |
| 1072 | if (FormatTok.Tok.is(tok::raw_identifier)) { |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1073 | IdentifierInfo &Info = IdentTable.get(Text); |
Daniel Jasper | cd1a32b | 2012-12-21 17:58:39 +0000 | [diff] [blame] | 1074 | FormatTok.Tok.setIdentifierInfo(&Info); |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1075 | FormatTok.Tok.setKind(Info.getTokenID()); |
| 1076 | } |
| 1077 | |
| 1078 | if (FormatTok.Tok.is(tok::greatergreater)) { |
| 1079 | FormatTok.Tok.setKind(tok::greater); |
| 1080 | GreaterStashed = true; |
| 1081 | } |
| 1082 | |
| 1083 | return FormatTok; |
| 1084 | } |
| 1085 | |
| 1086 | private: |
| 1087 | FormatToken FormatTok; |
| 1088 | bool GreaterStashed; |
| 1089 | Lexer &Lex; |
| 1090 | SourceManager &SourceMgr; |
| 1091 | IdentifierTable IdentTable; |
| 1092 | |
| 1093 | /// Returns the text of \c FormatTok. |
Manuel Klimek | 9541938 | 2013-01-07 07:56:50 +0000 | [diff] [blame] | 1094 | StringRef rawTokenText(Token &Tok) { |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1095 | return StringRef(SourceMgr.getCharacterData(Tok.getLocation()), |
| 1096 | Tok.getLength()); |
| 1097 | } |
| 1098 | }; |
| 1099 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1100 | class Formatter : public UnwrappedLineConsumer { |
| 1101 | public: |
| 1102 | Formatter(const FormatStyle &Style, Lexer &Lex, SourceManager &SourceMgr, |
| 1103 | const std::vector<CharSourceRange> &Ranges) |
Daniel Jasper | 1321eb5 | 2012-12-18 21:05:13 +0000 | [diff] [blame] | 1104 | : Style(Style), Lex(Lex), SourceMgr(SourceMgr), Ranges(Ranges), |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 1105 | StructuralError(false) { |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1106 | } |
| 1107 | |
Daniel Jasper | accb0b0 | 2012-12-04 21:05:31 +0000 | [diff] [blame] | 1108 | virtual ~Formatter() { |
| 1109 | } |
| 1110 | |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1111 | tooling::Replacements format() { |
Alexander Kornienko | 469a21b | 2012-12-07 16:15:44 +0000 | [diff] [blame] | 1112 | LexerBasedFormatTokenSource Tokens(Lex, SourceMgr); |
| 1113 | UnwrappedLineParser Parser(Style, Tokens, *this); |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 1114 | StructuralError = Parser.parse(); |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1115 | unsigned PreviousEndOfLineColumn = 0; |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 1116 | for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(), |
| 1117 | E = UnwrappedLines.end(); |
| 1118 | I != E; ++I) |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1119 | PreviousEndOfLineColumn = |
| 1120 | formatUnwrappedLine(*I, PreviousEndOfLineColumn); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1121 | return Replaces; |
| 1122 | } |
| 1123 | |
| 1124 | private: |
Alexander Kornienko | 720ffb6 | 2012-12-05 13:56:52 +0000 | [diff] [blame] | 1125 | virtual void consumeUnwrappedLine(const UnwrappedLine &TheLine) { |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 1126 | UnwrappedLines.push_back(TheLine); |
| 1127 | } |
| 1128 | |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1129 | unsigned formatUnwrappedLine(const UnwrappedLine &TheLine, |
| 1130 | unsigned PreviousEndOfLineColumn) { |
| 1131 | if (TheLine.Tokens.empty()) |
| 1132 | return 0; // FIXME: Find out how this can ever happen. |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1133 | |
| 1134 | CharSourceRange LineRange = |
| 1135 | CharSourceRange::getTokenRange(TheLine.Tokens.front().Tok.getLocation(), |
| 1136 | TheLine.Tokens.back().Tok.getLocation()); |
| 1137 | |
| 1138 | for (unsigned i = 0, e = Ranges.size(); i != e; ++i) { |
| 1139 | if (SourceMgr.isBeforeInTranslationUnit(LineRange.getEnd(), |
| 1140 | Ranges[i].getBegin()) || |
| 1141 | SourceMgr.isBeforeInTranslationUnit(Ranges[i].getEnd(), |
| 1142 | LineRange.getBegin())) |
| 1143 | continue; |
| 1144 | |
Manuel Klimek | 6cf5814 | 2013-01-07 08:54:53 +0000 | [diff] [blame] | 1145 | TokenAnnotator Annotator(TheLine, Style, SourceMgr, Lex); |
Daniel Jasper | 1f42f11 | 2013-01-04 18:52:56 +0000 | [diff] [blame] | 1146 | if (!Annotator.annotate()) |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1147 | break; |
| 1148 | UnwrappedLineFormatter Formatter( |
| 1149 | Style, SourceMgr, TheLine, PreviousEndOfLineColumn, |
| 1150 | Annotator.getAnnotations(), Replaces, StructuralError); |
| 1151 | return Formatter.format(); |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1152 | } |
Manuel Klimek | d4397b9 | 2013-01-04 23:34:14 +0000 | [diff] [blame] | 1153 | // If we did not reformat this unwrapped line, the column at the end of the |
| 1154 | // last token is unchanged - thus, we can calculate the end of the last |
| 1155 | // token, and return the result. |
| 1156 | const FormatToken &Token = TheLine.Tokens.back(); |
| 1157 | return SourceMgr.getSpellingColumnNumber(Token.Tok.getLocation()) + |
| 1158 | Lex.MeasureTokenLength(Token.Tok.getLocation(), SourceMgr, |
| 1159 | Lex.getLangOpts()) - |
| 1160 | 1; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1161 | } |
| 1162 | |
| 1163 | FormatStyle Style; |
| 1164 | Lexer &Lex; |
| 1165 | SourceManager &SourceMgr; |
| 1166 | tooling::Replacements Replaces; |
| 1167 | std::vector<CharSourceRange> Ranges; |
Alexander Kornienko | cff563c | 2012-12-04 17:27:50 +0000 | [diff] [blame] | 1168 | std::vector<UnwrappedLine> UnwrappedLines; |
| 1169 | bool StructuralError; |
Daniel Jasper | bac016b | 2012-12-03 18:12:45 +0000 | [diff] [blame] | 1170 | }; |
| 1171 | |
| 1172 | tooling::Replacements reformat(const FormatStyle &Style, Lexer &Lex, |
| 1173 | SourceManager &SourceMgr, |
| 1174 | std::vector<CharSourceRange> Ranges) { |
| 1175 | Formatter formatter(Style, Lex, SourceMgr, Ranges); |
| 1176 | return formatter.format(); |
| 1177 | } |
| 1178 | |
| 1179 | } // namespace format |
| 1180 | } // namespace clang |