1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
// Scintilla source code edit control
/** @file LexVB.cxx
** Lexer for Visual Basic and VBScript.
**/
// Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <stdarg.h>
#include "Platform.h"
#include "PropSet.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"
// Internal state, highlighted as number
#define SCE_B_FILENUMBER SCE_B_DEFAULT+100
static bool IsVBComment(Accessor &styler, int pos, int len) {
return len > 0 && styler[pos] == '\'';
}
static inline bool IsTypeCharacter(int ch) {
return ch == '%' || ch == '&' || ch == '@' || ch == '!' || ch == '#' || ch == '$';
}
// Extended to accept accented characters
static inline bool IsAWordChar(int ch) {
return ch >= 0x80 ||
(isalnum(ch) || ch == '.' || ch == '_');
}
static inline bool IsAWordStart(int ch) {
return ch >= 0x80 ||
(isalpha(ch) || ch == '_');
}
static inline bool IsANumberChar(int ch) {
// Not exactly following number definition (several dots are seen as OK, etc.)
// but probably enough in most cases.
return (ch < 0x80) &&
(isdigit(ch) || toupper(ch) == 'E' ||
ch == '.' || ch == '-' || ch == '+');
}
static void ColouriseVBDoc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler, bool vbScriptSyntax) {
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords3 = *keywordlists[2];
WordList &keywords4 = *keywordlists[3];
styler.StartAt(startPos);
int visibleChars = 0;
int fileNbDigits = 0;
// Do not leak onto next line
if (initStyle == SCE_B_STRINGEOL || initStyle == SCE_B_COMMENT || initStyle == SCE_B_PREPROCESSOR) {
initStyle = SCE_B_DEFAULT;
}
StyleContext sc(startPos, length, initStyle, styler);
for (; sc.More(); sc.Forward()) {
if (sc.state == SCE_B_OPERATOR) {
sc.SetState(SCE_B_DEFAULT);
} else if (sc.state == SCE_B_IDENTIFIER) {
if (!IsAWordChar(sc.ch)) {
// In Basic (except VBScript), a variable name or a function name
// can end with a special character indicating the type of the value
// held or returned.
bool skipType = false;
if (!vbScriptSyntax && IsTypeCharacter(sc.ch)) {
sc.Forward(); // Skip it
skipType = true;
}
if (sc.ch == ']') {
sc.Forward();
}
char s[100];
sc.GetCurrentLowered(s, sizeof(s));
if (skipType) {
s[strlen(s) - 1] = '\0';
}
if (strcmp(s, "rem") == 0) {
sc.ChangeState(SCE_B_COMMENT);
} else {
if (keywords.InList(s)) {
sc.ChangeState(SCE_B_KEYWORD);
} else if (keywords2.InList(s)) {
sc.ChangeState(SCE_B_KEYWORD2);
} else if (keywords3.InList(s)) {
sc.ChangeState(SCE_B_KEYWORD3);
} else if (keywords4.InList(s)) {
sc.ChangeState(SCE_B_KEYWORD4);
} // Else, it is really an identifier...
sc.SetState(SCE_B_DEFAULT);
}
}
} else if (sc.state == SCE_B_NUMBER) {
// We stop the number definition on non-numerical non-dot non-eE non-sign char
// Also accepts A-F for hex. numbers
if (!IsANumberChar(sc.ch) && !(tolower(sc.ch) >= 'a' && tolower(sc.ch) <= 'f')) {
sc.SetState(SCE_B_DEFAULT);
}
} else if (sc.state == SCE_B_STRING) {
// VB doubles quotes to preserve them, so just end this string
// state now as a following quote will start again
if (sc.ch == '\"') {
if (sc.chNext == '\"') {
sc.Forward();
} else {
if (tolower(sc.chNext) == 'c') {
sc.Forward();
}
sc.ForwardSetState(SCE_B_DEFAULT);
}
} else if (sc.atLineEnd) {
visibleChars = 0;
sc.ChangeState(SCE_B_STRINGEOL);
sc.ForwardSetState(SCE_B_DEFAULT);
}
} else if (sc.state == SCE_B_COMMENT) {
if (sc.atLineEnd) {
visibleChars = 0;
sc.ForwardSetState(SCE_B_DEFAULT);
}
} else if (sc.state == SCE_B_PREPROCESSOR) {
if (sc.atLineEnd) {
visibleChars = 0;
sc.ForwardSetState(SCE_B_DEFAULT);
}
} else if (sc.state == SCE_B_FILENUMBER) {
if (IsADigit(sc.ch)) {
fileNbDigits++;
if (fileNbDigits > 3) {
sc.ChangeState(SCE_B_DATE);
}
} else if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == ',') {
// Regular uses: Close #1; Put #1, ...; Get #1, ... etc.
// Too bad if date is format #27, Oct, 2003# or something like that...
// Use regular number state
sc.ChangeState(SCE_B_NUMBER);
sc.SetState(SCE_B_DEFAULT);
} else if (sc.ch == '#') {
sc.ChangeState(SCE_B_DATE);
sc.ForwardSetState(SCE_B_DEFAULT);
} else {
sc.ChangeState(SCE_B_DATE);
}
if (sc.state != SCE_B_FILENUMBER) {
fileNbDigits = 0;
}
} else if (sc.state == SCE_B_DATE) {
if (sc.atLineEnd) {
visibleChars = 0;
sc.ChangeState(SCE_B_STRINGEOL);
sc.ForwardSetState(SCE_B_DEFAULT);
} else if (sc.ch == '#') {
sc.ForwardSetState(SCE_B_DEFAULT);
}
}
if (sc.state == SCE_B_DEFAULT) {
if (sc.ch == '\'') {
sc.SetState(SCE_B_COMMENT);
} else if (sc.ch == '\"') {
sc.SetState(SCE_B_STRING);
} else if (sc.ch == '#' && visibleChars == 0) {
// Preprocessor commands are alone on their line
sc.SetState(SCE_B_PREPROCESSOR);
} else if (sc.ch == '#') {
// It can be a date literal, ending with #, or a file number, from 1 to 511
// The date literal depends on the locale, so anything can go between #'s.
// Can be #January 1, 1993# or #1 Jan 93# or #05/11/2003#, etc.
// So we set the FILENUMBER state, and switch to DATE if it isn't a file number
sc.SetState(SCE_B_FILENUMBER);
} else if (sc.ch == '&' && tolower(sc.chNext) == 'h') {
// Hexadecimal number
sc.SetState(SCE_B_NUMBER);
sc.Forward();
} else if (sc.ch == '&' && tolower(sc.chNext) == 'o') {
// Octal number
sc.SetState(SCE_B_NUMBER);
sc.Forward();
} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(SCE_B_NUMBER);
} else if (IsAWordStart(sc.ch) || (sc.ch == '[')) {
sc.SetState(SCE_B_IDENTIFIER);
} else if (isoperator(static_cast<char>(sc.ch)) || (sc.ch == '\\')) { // Integer division
sc.SetState(SCE_B_OPERATOR);
}
}
if (sc.atLineEnd) {
visibleChars = 0;
}
if (!IsASpace(sc.ch)) {
visibleChars++;
}
}
sc.Complete();
}
static void FoldVBDoc(unsigned int startPos, int length, int,
WordList *[], Accessor &styler) {
int endPos = startPos + length;
// Backtrack to previous line in case need to fix its fold status
int lineCurrent = styler.GetLine(startPos);
if (startPos > 0) {
if (lineCurrent > 0) {
lineCurrent--;
startPos = styler.LineStart(lineCurrent);
}
}
int spaceFlags = 0;
int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsVBComment);
char chNext = styler[startPos];
for (int i = startPos; i < endPos; i++) {
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) {
int lev = indentCurrent;
int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsVBComment);
if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
// Only non whitespace lines can be headers
if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
lev |= SC_FOLDLEVELHEADERFLAG;
} else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
// Line after is blank so check the next - maybe should continue further?
int spaceFlags2 = 0;
int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsVBComment);
if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
lev |= SC_FOLDLEVELHEADERFLAG;
}
}
}
indentCurrent = indentNext;
styler.SetLevel(lineCurrent, lev);
lineCurrent++;
}
}
}
static void ColouriseVBNetDoc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler) {
ColouriseVBDoc(startPos, length, initStyle, keywordlists, styler, false);
}
static void ColouriseVBScriptDoc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler) {
ColouriseVBDoc(startPos, length, initStyle, keywordlists, styler, true);
}
static const char * const vbWordListDesc[] = {
"Keywords",
"user1",
"user2",
"user3",
0
};
LexerModule lmVB(SCLEX_VB, ColouriseVBNetDoc, "vb", FoldVBDoc, vbWordListDesc);
LexerModule lmVBScript(SCLEX_VBSCRIPT, ColouriseVBScriptDoc, "vbscript", FoldVBDoc, vbWordListDesc);
|
