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
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
// Scintilla source code edit control
/** @file LexVerilog.cxx
** Lexer for Verilog.
** Written by Avi Yegudin, based on C++ lexer by Neil Hodgson
**/
// Copyright 1998-2002 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"
static inline bool IsAWordChar(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || ch == '\'');
}
static inline bool IsAWordStart(const int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '$');
}
static void ColouriseVerilogDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
Accessor &styler) {
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords3 = *keywordlists[2];
WordList &keywords4 = *keywordlists[3];
// Do not leak onto next line
if (initStyle == SCE_V_STRINGEOL)
initStyle = SCE_V_DEFAULT;
StyleContext sc(startPos, length, initStyle, styler);
for (; sc.More(); sc.Forward()) {
if (sc.atLineStart && (sc.state == SCE_V_STRING)) {
// Prevent SCE_V_STRINGEOL from leaking back to previous line
sc.SetState(SCE_V_STRING);
}
// Handle line continuation generically.
if (sc.ch == '\\') {
if (sc.chNext == '\n' || sc.chNext == '\r') {
sc.Forward();
if (sc.ch == '\r' && sc.chNext == '\n') {
sc.Forward();
}
continue;
}
}
// Determine if the current state should terminate.
if (sc.state == SCE_V_OPERATOR) {
sc.SetState(SCE_V_DEFAULT);
} else if (sc.state == SCE_V_NUMBER) {
if (!IsAWordChar(sc.ch)) {
sc.SetState(SCE_V_DEFAULT);
}
} else if (sc.state == SCE_V_IDENTIFIER) {
if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
char s[100];
sc.GetCurrent(s, sizeof(s));
if (keywords.InList(s)) {
sc.ChangeState(SCE_V_WORD);
} else if (keywords2.InList(s)) {
sc.ChangeState(SCE_V_WORD2);
} else if (keywords3.InList(s)) {
sc.ChangeState(SCE_V_WORD3);
} else if (keywords4.InList(s)) {
sc.ChangeState(SCE_V_USER);
}
sc.SetState(SCE_V_DEFAULT);
}
} else if (sc.state == SCE_V_PREPROCESSOR) {
if (!IsAWordChar(sc.ch)) {
sc.SetState(SCE_V_DEFAULT);
}
} else if (sc.state == SCE_V_COMMENT) {
if (sc.Match('*', '/')) {
sc.Forward();
sc.ForwardSetState(SCE_V_DEFAULT);
}
} else if (sc.state == SCE_V_COMMENTLINE || sc.state == SCE_V_COMMENTLINEBANG) {
if (sc.atLineEnd) {
sc.SetState(SCE_V_DEFAULT);
}
} else if (sc.state == SCE_V_STRING) {
if (sc.ch == '\\') {
if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
sc.Forward();
}
} else if (sc.ch == '\"') {
sc.ForwardSetState(SCE_V_DEFAULT);
} else if (sc.atLineEnd) {
sc.ChangeState(SCE_V_STRINGEOL);
sc.ForwardSetState(SCE_V_DEFAULT);
}
}
// Determine if a new state should be entered.
if (sc.state == SCE_V_DEFAULT) {
if (IsADigit(sc.ch) || (sc.ch == '\'') || (sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(SCE_V_NUMBER);
} else if (IsAWordStart(sc.ch)) {
sc.SetState(SCE_V_IDENTIFIER);
} else if (sc.Match('/', '*')) {
sc.SetState(SCE_V_COMMENT);
sc.Forward(); // Eat the * so it isn't used for the end of the comment
} else if (sc.Match('/', '/')) {
if (sc.Match("//!")) // Nice to have a different comment style
sc.SetState(SCE_V_COMMENTLINEBANG);
else
sc.SetState(SCE_V_COMMENTLINE);
} else if (sc.ch == '\"') {
sc.SetState(SCE_V_STRING);
} else if (sc.ch == '`') {
sc.SetState(SCE_V_PREPROCESSOR);
// Skip whitespace between ` and preprocessor word
do {
sc.Forward();
} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
if (sc.atLineEnd) {
sc.SetState(SCE_V_DEFAULT);
}
} else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@' || sc.ch == '#') {
sc.SetState(SCE_V_OPERATOR);
}
}
}
sc.Complete();
}
static bool IsStreamCommentStyle(int style) {
return style == SCE_V_COMMENT;
}
// Store both the current line's fold level and the next lines in the
// level store to make it easy to pick up with each increment
// and to make it possible to fiddle the current level for "} else {".
static void FoldNoBoxVerilogDoc(unsigned int startPos, int length, int initStyle,
Accessor &styler) {
bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
// Verilog specific folding options:
// fold_at_module -
// Generally used methodology in verilog code is
// one module per file, so folding at module definition is useless.
// fold_at_brace/parenthese -
// Folding of long port lists can be convenient.
bool foldAtModule = styler.GetPropertyInt("fold.verilog.flags", 0) != 0;
bool foldAtBrace = 1;
bool foldAtParenthese = 1;
unsigned int endPos = startPos + length;
int visibleChars = 0;
int lineCurrent = styler.GetLine(startPos);
int levelCurrent = SC_FOLDLEVELBASE;
if (lineCurrent > 0)
levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
int levelMinCurrent = levelCurrent;
int levelNext = levelCurrent;
char chNext = styler[startPos];
int styleNext = styler.StyleAt(startPos);
int style = initStyle;
for (unsigned int i = startPos; i < endPos; i++) {
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
int stylePrev = style;
style = styleNext;
styleNext = styler.StyleAt(i + 1);
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
if (foldComment && IsStreamCommentStyle(style)) {
if (!IsStreamCommentStyle(stylePrev)) {
levelNext++;
} else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
// Comments don't end at end of line and the next character may be unstyled.
levelNext--;
}
}
if (foldComment && (style == SCE_V_COMMENTLINE)) {
if ((ch == '/') && (chNext == '/')) {
char chNext2 = styler.SafeGetCharAt(i + 2);
if (chNext2 == '{') {
levelNext++;
} else if (chNext2 == '}') {
levelNext--;
}
}
}
if (foldPreprocessor && (style == SCE_V_PREPROCESSOR)) {
if (ch == '`') {
unsigned int j = i + 1;
while ((j < endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
j++;
}
if (styler.Match(j, "if")) {
levelNext++;
} else if (styler.Match(j, "end")) {
levelNext--;
}
}
}
if (style == SCE_V_OPERATOR) {
if (foldAtParenthese) {
if (ch == '(') {
levelNext++;
} else if (ch == ')') {
levelNext--;
}
}
}
if (style == SCE_V_OPERATOR) {
if (foldAtBrace) {
if (ch == '{') {
levelNext++;
} else if (ch == '}') {
levelNext--;
}
}
}
if (style == SCE_V_WORD && stylePrev != SCE_V_WORD) {
unsigned int j = i;
if (styler.Match(j, "case") ||
styler.Match(j, "casex") ||
styler.Match(j, "casez") ||
styler.Match(j, "function") ||
styler.Match(j, "fork") ||
styler.Match(j, "table") ||
styler.Match(j, "task") ||
styler.Match(j, "specify") ||
styler.Match(j, "primitive") ||
styler.Match(j, "module") && foldAtModule ||
styler.Match(j, "begin")) {
levelNext++;
} else if (styler.Match(j, "endcase") ||
styler.Match(j, "endfunction") ||
styler.Match(j, "join") ||
styler.Match(j, "endtask") ||
styler.Match(j, "endtable") ||
styler.Match(j, "endspecify") ||
styler.Match(j, "endprimitive") ||
styler.Match(j, "endmodule") && foldAtModule ||
styler.Match(j, "end") && !IsAWordChar(styler.SafeGetCharAt(j+3))) {
levelNext--;
}
}
if (atEOL) {
int levelUse = levelCurrent;
if (foldAtElse) {
levelUse = levelMinCurrent;
}
int lev = levelUse | levelNext << 16;
if (visibleChars == 0 && foldCompact)
lev |= SC_FOLDLEVELWHITEFLAG;
if (levelUse < levelNext)
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
lineCurrent++;
levelCurrent = levelNext;
levelMinCurrent = levelCurrent;
visibleChars = 0;
}
if (!isspacechar(ch))
visibleChars++;
}
}
static void FoldVerilogDoc(unsigned int startPos, int length, int initStyle, WordList *[],
Accessor &styler) {
FoldNoBoxVerilogDoc(startPos, length, initStyle, styler);
}
static const char * const verilogWordLists[] = {
"Primary keywords and identifiers",
"Secondary keywords and identifiers",
"System Tasks",
"User defined tasks and identifiers",
"Unused",
0,
};
LexerModule lmVerilog(SCLEX_VERILOG, ColouriseVerilogDoc, "verilog", FoldVerilogDoc, verilogWordLists);
|
