git.saurik.com Git - wxWidgets.git/blob - src/stc/scintilla/lexers/LexASY.cxx

1 // Scintilla source code edit control

2 //Author: instanton (email: soft_share<at>126<dot>com)

3 // The License.txt file describes the conditions under which this software may be distributed.

5 #include <stdlib.h>

6 #include <string.h>

7 #include <stdio.h>

8 #include <stdarg.h>

9 #include <assert.h>

11 #include "ILexer.h"

12 #include "Scintilla.h"

13 #include "SciLexer.h"

15 #include "WordList.h"

16 #include "LexAccessor.h"

17 #include "Accessor.h"

18 #include "StyleContext.h"

19 #include "CharacterSet.h"

20 #include "LexerModule.h"

22 #ifdef SCI_NAMESPACE

23 using namespace Scintilla;

24 #endif

 static void ColouriseAsyDoc(unsigned int startPos, int length, int initStyle,

27 WordList *keywordlists[], Accessor &styler) {

         WordList &keywords = *keywordlists[0];

         WordList &keywords2 = *keywordlists[1];

         CharacterSet setWordStart(CharacterSet::setAlpha, "_", 0x80, true);

         CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);

35 int visibleChars = 0;

         StyleContext sc(startPos, length, initStyle, styler);

         for (; sc.More(); sc.Forward()) {

41 if (sc.atLineStart) {

                         if (sc.state == SCE_ASY_STRING) {

43 sc.SetState(SCE_ASY_STRING);

44 }

45 visibleChars = 0;

46 }

                 if (sc.ch == '\\') {

                         if (sc.chNext == '\n' || sc.chNext == '\r') {

50 sc.Forward();

                                 if (sc.ch == '\r' && sc.chNext == '\n') {

52 sc.Forward();

53 }

54 // continuationLine = true;

55 continue;

56 }

57 }

59 // Determine if the current state should terminate.

60 switch (sc.state) {

61 case SCE_ASY_OPERATOR:

62 sc.SetState(SCE_ASY_DEFAULT);

63 break;

64 case SCE_ASY_NUMBER:

                                 if (!setWord.Contains(sc.ch)) {

66 sc.SetState(SCE_ASY_DEFAULT);

67 }

68 break;

69 case SCE_ASY_IDENTIFIER:

                                 if (!setWord.Contains(sc.ch) || (sc.ch == '.')) {

71 char s[1000];

                                         sc.GetCurrentLowered(s, sizeof(s));

                                         if (keywords.InList(s)) {

74 sc.ChangeState(SCE_ASY_WORD);

                                         } else if (keywords2.InList(s)) {

76 sc.ChangeState(SCE_ASY_WORD2);

77 }

78 sc.SetState(SCE_ASY_DEFAULT);

79 }

80 break;

81 case SCE_ASY_COMMENT:

                                 if (sc.Match('*', '/')) {

83 sc.Forward();

84 sc.ForwardSetState(SCE_ASY_DEFAULT);

85 }

86 break;

87 case SCE_ASY_COMMENTLINE:

88 if (sc.atLineStart) {

89 sc.SetState(SCE_ASY_DEFAULT);

90 }

91 break;

92 case SCE_ASY_STRING:

93 if (sc.atLineEnd) {

94 sc.ChangeState(SCE_ASY_STRINGEOL);

                                 } else if (sc.ch == '\\') {

                                         if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {

97 sc.Forward();

98 }

                                 } else if (sc.ch == '\"') {

100 sc.ForwardSetState(SCE_ASY_DEFAULT);

101 }

102 break;

103 case SCE_ASY_CHARACTER:

104 if (sc.atLineEnd) {

105 sc.ChangeState(SCE_ASY_STRINGEOL);

                                 } else  if (sc.ch == '\\') {

                                         if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {

108 sc.Forward();

109 }

                                 } else if (sc.ch == '\'') {

111 sc.ForwardSetState(SCE_ASY_DEFAULT);

112 }

113 break;

114 }

115

116 // Determine if a new state should be entered.

                 if (sc.state == SCE_ASY_DEFAULT) {

                         if (setWordStart.Contains(sc.ch) || (sc.ch == '@')) {

119 sc.SetState(SCE_ASY_IDENTIFIER);

                         } else if (sc.Match('/', '*')) {

121 sc.SetState(SCE_ASY_COMMENT);

122 sc.Forward(); //

                         } else if (sc.Match('/', '/')) {

124 sc.SetState(SCE_ASY_COMMENTLINE);

                         } else if (sc.ch == '\"') {

126 sc.SetState(SCE_ASY_STRING);

                         } else if (sc.ch == '\'') {

128 sc.SetState(SCE_ASY_CHARACTER);

                         } else if (sc.ch == '#' && visibleChars == 0) {

130 do {

131 sc.Forward();

                                 } while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());

133 if (sc.atLineEnd) {

134 sc.SetState(SCE_ASY_DEFAULT);

135 }

                         } else if (isoperator(static_cast<char>(sc.ch))) {

137 sc.SetState(SCE_ASY_OPERATOR);

138 }

139 }

140

141 }

142 sc.Complete();

143 }

144

 static bool IsAsyCommentStyle(int style) {

146 return style == SCE_ASY_COMMENT;

147 }

148

149

 static inline bool isASYidentifier(int ch) {

151 return

       ((ch >= 'a') && (ch <= 'z')) || ((ch >= 'A') && (ch <= 'Z')) ;

153 }

154

 static int ParseASYWord(unsigned int pos, Accessor &styler, char *word)

156 {

157 int length=0;

   char ch=styler.SafeGetCharAt(pos);

159 *word=0;

160

   while(isASYidentifier(ch) && length<100){

162 word[length]=ch;

163 length++;

           ch=styler.SafeGetCharAt(pos+length);

165 }

166 word[length]=0;

167 return length;

168 }

169

 static bool IsASYDrawingLine(int line, Accessor &styler) {

         int pos = styler.LineStart(line);

         int eol_pos = styler.LineStart(line + 1) - 1;

173

174 int startpos = pos;

         char buffer[100]="";

176

177 while (startpos<eol_pos){

178 char ch = styler[startpos];

                 ParseASYWord(startpos,styler,buffer);

                 bool drawcommands = strncmp(buffer,"draw",4)==0||

                         strncmp(buffer,"pair",4)==0||strncmp(buffer,"label",5)==0;

                 if (!drawcommands && ch!=' ') return false;

                 else if (drawcommands) return true;

184 startpos++;

185 }

186 return false;

187 }

188

 static void FoldAsyDoc(unsigned int startPos, int length, int initStyle,

190 WordList *[], Accessor &styler) {

         bool foldComment = styler.GetPropertyInt("fold.comment") != 0;

         bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;

         bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;

194 unsigned int endPos = startPos + length;

195 int visibleChars = 0;

         int lineCurrent = styler.GetLine(startPos);

197 int levelCurrent = SC_FOLDLEVELBASE;

         if (lineCurrent > 0)

                 levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;

200 int levelMinCurrent = levelCurrent;

201 int levelNext = levelCurrent;

202 char chNext = styler[startPos];

         int styleNext = styler.StyleAt(startPos);

204 int style = initStyle;

         for (unsigned int i = startPos; i < endPos; i++) {

206 char ch = chNext;

                 chNext = styler.SafeGetCharAt(i + 1);

208 int stylePrev = style;

209 style = styleNext;

                 styleNext = styler.StyleAt(i + 1);

                 bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');

                 if (foldComment && IsAsyCommentStyle(style)) {

                         if (!IsAsyCommentStyle(stylePrev) && (stylePrev != SCE_ASY_COMMENTLINEDOC)) {

214 levelNext++;

                         } else if (!IsAsyCommentStyle(styleNext) && (styleNext != SCE_ASY_COMMENTLINEDOC) && !atEOL) {

216 levelNext--;

217 }

218 }

219 if (style == SCE_ASY_OPERATOR) {

                         if (ch == '{') {

221 if (levelMinCurrent > levelNext) {

222 levelMinCurrent = levelNext;

223 }

224 levelNext++;

                         } else if (ch == '}') {

226 levelNext--;

227 }

228 }

229

                 if (atEOL && IsASYDrawingLine(lineCurrent, styler)){

                         if (lineCurrent==0 && IsASYDrawingLine(lineCurrent + 1, styler))

232 levelNext++;

                         else if (lineCurrent!=0 && !IsASYDrawingLine(lineCurrent - 1, styler)

                                 && IsASYDrawingLine(lineCurrent + 1, styler)

235 )

236 levelNext++;

                         else if (lineCurrent!=0 && IsASYDrawingLine(lineCurrent - 1, styler) &&

                                 !IsASYDrawingLine(lineCurrent+1, styler))

239 levelNext--;

240 }

241

242 if (atEOL) {

243 int levelUse = levelCurrent;

244 if (foldAtElse) {

245 levelUse = levelMinCurrent;

246 }

                         int lev = levelUse | levelNext << 16;

                         if (visibleChars == 0 && foldCompact)

249 lev |= SC_FOLDLEVELWHITEFLAG;

250 if (levelUse < levelNext)

251 lev |= SC_FOLDLEVELHEADERFLAG;

                         if (lev != styler.LevelAt(lineCurrent)) {

                                 styler.SetLevel(lineCurrent, lev);

254 }

255 lineCurrent++;

256 levelCurrent = levelNext;

257 levelMinCurrent = levelCurrent;

258 visibleChars = 0;

259 }

                 if (!IsASpace(ch))

261 visibleChars++;

262 }

263 }

264

265 static const char * const asyWordLists[] = {

266 "Primary keywords and identifiers",

267 "Secondary keywords and identifiers",

268 0,

269 };

270

 LexerModule lmASY(SCLEX_ASYMPTOTE, ColouriseAsyDoc, "asy", FoldAsyDoc, asyWordLists);