1
// Scintilla source code edit control
4
** Based on LexPascal.cxx
5
** Written by Laurent le Tynevez
6
** Updated by Simon Steele <s.steele@pnotepad.org> September 2002
7
** Updated by Mathias Rauen <scite@madshi.net> May 2003 (Delphi adjustments)
8
** Updated by Rod Falck, Aug 2006 Converted to COBOL
22
#include "Scintilla.h"
24
#include "StyleContext.h"
27
using namespace Scintilla;
30
#define IN_DIVISION 0x01
31
#define IN_DECLARATIVES 0x02
32
#define IN_SECTION 0x04
33
#define IN_PARAGRAPH 0x08
35
#define NOT_HEADER 0x10
37
inline bool isCOBOLoperator(char ch)
39
return isoperator(ch);
42
inline bool isCOBOLwordchar(char ch)
44
return isascii(ch) && (isalnum(ch) || ch == '-');
48
inline bool isCOBOLwordstart(char ch)
50
return isascii(ch) && isalnum(ch);
53
static int CountBits(int nBits)
56
for (int i = 0; i < 32; ++i)
64
static void getRange(unsigned int start,
70
while ((i < end - start + 1) && (i < len-1)) {
71
s[i] = static_cast<char>(tolower(styler[start + i]));
77
static void ColourTo(Accessor &styler, unsigned int end, unsigned int attr) {
78
styler.ColourTo(end, attr);
82
static int classifyWordCOBOL(unsigned int start, unsigned int end, /*WordList &keywords*/WordList *keywordlists[], Accessor &styler, int nContainment, bool *bAarea) {
85
WordList& a_keywords = *keywordlists[0];
86
WordList& b_keywords = *keywordlists[1];
87
WordList& c_keywords = *keywordlists[2];
90
getRange(start, end, styler, s, sizeof(s));
92
char chAttr = SCE_C_IDENTIFIER;
93
if (isdigit(s[0]) || (s[0] == '.')) {
94
chAttr = SCE_C_NUMBER;
97
if (!isdigit(*p) && isCOBOLwordchar(*p)) {
98
chAttr = SCE_C_IDENTIFIER;
105
if (a_keywords.InList(s)) {
108
else if (b_keywords.InList(s)) {
109
chAttr = SCE_C_WORD2;
111
else if (c_keywords.InList(s)) {
116
if (strcmp(s, "division") == 0) {
118
// we've determined the containment, anything else is just ignored for those purposes
120
} else if (strcmp(s, "declaratives") == 0) {
121
ret = IN_DIVISION | IN_DECLARATIVES;
122
if (nContainment & IN_DECLARATIVES)
123
ret |= NOT_HEADER | IN_SECTION;
124
// we've determined the containment, anything else is just ignored for those purposes
126
} else if (strcmp(s, "section") == 0) {
127
ret = (nContainment &~ IN_PARAGRAPH) | IN_SECTION;
128
// we've determined the containment, anything else is just ignored for those purposes
130
} else if (strcmp(s, "end") == 0 && (nContainment & IN_DECLARATIVES)) {
131
ret = IN_DIVISION | IN_DECLARATIVES | IN_SECTION | NOT_HEADER;
133
ret = nContainment | IN_PARAGRAPH;
136
ColourTo(styler, end, chAttr);
140
static void ColouriseCOBOLDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
143
styler.StartAt(startPos);
145
int state = initStyle;
146
if (state == SCE_C_CHARACTER) // Does not leak onto next line
147
state = SCE_C_DEFAULT;
149
char chNext = styler[startPos];
150
unsigned int lengthDoc = startPos + length;
154
int currentLine = styler.GetLine(startPos);
155
if (currentLine > 0) {
156
styler.SetLineState(currentLine, styler.GetLineState(currentLine-1));
157
nContainment = styler.GetLineState(currentLine);
158
nContainment &= ~NOT_HEADER;
160
styler.SetLineState(currentLine, 0);
164
styler.StartSegment(startPos);
165
bool bNewLine = true;
166
bool bAarea = !isspacechar(chNext);
168
for (unsigned int i = startPos; i < lengthDoc; i++) {
171
chNext = styler.SafeGetCharAt(i + 1);
178
if (column <= 1 && !bAarea) {
179
bAarea = !isspacechar(ch);
181
bool bSetNewLine = false;
182
if ((ch == '\r' && chNext != '\n') || (ch == '\n')) {
183
// Trigger on CR only (Mac style) or either on LF from CR+LF (Dos/Win) or on LF alone (Unix)
184
// Avoid triggering two times on Dos/Win
186
if (state == SCE_C_CHARACTER) {
187
ColourTo(styler, i, state);
188
state = SCE_C_DEFAULT;
190
styler.SetLineState(currentLine, nContainment);
193
if (nContainment & NOT_HEADER)
194
nContainment &= ~(NOT_HEADER | IN_DECLARATIVES | IN_SECTION);
197
if (styler.IsLeadByte(ch)) {
198
chNext = styler.SafeGetCharAt(i + 2);
204
if (state == SCE_C_DEFAULT) {
205
if (isCOBOLwordstart(ch) || (ch == '$' && isalpha(chNext))) {
206
ColourTo(styler, i-1, state);
207
state = SCE_C_IDENTIFIER;
208
} else if (column == 0 && ch == '*' && chNext != '*') {
209
ColourTo(styler, i-1, state);
210
state = SCE_C_COMMENTLINE;
211
} else if (column == 0 && ch == '/' && chNext != '*') {
212
ColourTo(styler, i-1, state);
213
state = SCE_C_COMMENTLINE;
214
} else if (column == 0 && ch == '*' && chNext == '*') {
215
ColourTo(styler, i-1, state);
216
state = SCE_C_COMMENTDOC;
217
} else if (column == 0 && ch == '/' && chNext == '*') {
218
ColourTo(styler, i-1, state);
219
state = SCE_C_COMMENTDOC;
220
} else if (ch == '"') {
221
ColourTo(styler, i-1, state);
222
state = SCE_C_STRING;
223
} else if (ch == '\'') {
224
ColourTo(styler, i-1, state);
225
state = SCE_C_CHARACTER;
226
} else if (ch == '?' && column == 0) {
227
ColourTo(styler, i-1, state);
228
state = SCE_C_PREPROCESSOR;
229
} else if (isCOBOLoperator(ch)) {
230
ColourTo(styler, i-1, state);
231
ColourTo(styler, i, SCE_C_OPERATOR);
233
} else if (state == SCE_C_IDENTIFIER) {
234
if (!isCOBOLwordchar(ch)) {
235
int lStateChange = classifyWordCOBOL(styler.GetStartSegment(), i - 1, keywordlists, styler, nContainment, &bAarea);
237
if(lStateChange != 0) {
238
styler.SetLineState(currentLine, lStateChange);
239
nContainment = lStateChange;
242
state = SCE_C_DEFAULT;
243
chNext = styler.SafeGetCharAt(i + 1);
245
state = SCE_C_STRING;
246
} else if (ch == '\'') {
247
state = SCE_C_CHARACTER;
248
} else if (isCOBOLoperator(ch)) {
249
ColourTo(styler, i, SCE_C_OPERATOR);
253
if (state == SCE_C_PREPROCESSOR) {
254
if ((ch == '\r' || ch == '\n') && !(chPrev == '\\' || chPrev == '\r')) {
255
ColourTo(styler, i-1, state);
256
state = SCE_C_DEFAULT;
258
} else if (state == SCE_C_COMMENT) {
259
if (ch == '\r' || ch == '\n') {
260
ColourTo(styler, i, state);
261
state = SCE_C_DEFAULT;
263
} else if (state == SCE_C_COMMENTDOC) {
264
if (ch == '\r' || ch == '\n') {
265
if (((i > styler.GetStartSegment() + 2) || (
266
(initStyle == SCE_C_COMMENTDOC) &&
267
(styler.GetStartSegment() == static_cast<unsigned int>(startPos))))) {
268
ColourTo(styler, i, state);
269
state = SCE_C_DEFAULT;
272
} else if (state == SCE_C_COMMENTLINE) {
273
if (ch == '\r' || ch == '\n') {
274
ColourTo(styler, i-1, state);
275
state = SCE_C_DEFAULT;
277
} else if (state == SCE_C_STRING) {
279
ColourTo(styler, i, state);
280
state = SCE_C_DEFAULT;
282
} else if (state == SCE_C_CHARACTER) {
284
ColourTo(styler, i, state);
285
state = SCE_C_DEFAULT;
290
bNewLine = bSetNewLine;
296
ColourTo(styler, lengthDoc - 1, state);
299
static void FoldCOBOLDoc(unsigned int startPos, int length, int, WordList *[],
301
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
302
unsigned int endPos = startPos + length;
303
int visibleChars = 0;
304
int lineCurrent = styler.GetLine(startPos);
305
int levelPrev = lineCurrent > 0 ? styler.LevelAt(lineCurrent - 1) & SC_FOLDLEVELNUMBERMASK : 0xFFF;
306
char chNext = styler[startPos];
308
bool bNewLine = true;
309
bool bAarea = !isspacechar(chNext);
311
bool bComment = false;
312
for (unsigned int i = startPos; i < endPos; i++) {
314
chNext = styler.SafeGetCharAt(i + 1);
319
bComment = (ch == '*' || ch == '/' || ch == '?');
321
if (column <= 1 && !bAarea) {
322
bAarea = !isspacechar(ch);
324
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
326
int nContainment = styler.GetLineState(lineCurrent);
327
int lev = CountBits(nContainment & IN_FLAGS) | SC_FOLDLEVELBASE;
328
if (bAarea && !bComment)
330
if (visibleChars == 0 && foldCompact)
331
lev |= SC_FOLDLEVELWHITEFLAG;
332
if ((bAarea) && (visibleChars > 0) && !(nContainment & NOT_HEADER) && !bComment)
333
lev |= SC_FOLDLEVELHEADERFLAG;
334
if (lev != styler.LevelAt(lineCurrent)) {
335
styler.SetLevel(lineCurrent, lev);
337
if ((lev & SC_FOLDLEVELNUMBERMASK) <= (levelPrev & SC_FOLDLEVELNUMBERMASK)) {
338
// this level is at the same level or less than the previous line
339
// therefore these is nothing for the previous header to collapse, so remove the header
340
styler.SetLevel(lineCurrent - 1, levelPrev & ~SC_FOLDLEVELHEADERFLAG);
352
if (!isspacechar(ch))
356
// Fill in the real level of the next line, keeping the current flags as they will be filled in later
357
int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
358
styler.SetLevel(lineCurrent, levelPrev | flagsNext);
361
static const char * const COBOLWordListDesc[] = {
368
LexerModule lmCOBOL(SCLEX_COBOL, ColouriseCOBOLDoc, "COBOL", FoldCOBOLDoc, COBOLWordListDesc);