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
|
// Scintilla source code edit control
/** @file LexLout.cxx
** Lexer for the Basser Lout (>= version 3) typesetting language
**/
// Copyright 2003 by Kein-Hong Man <mkh@pl.jaring.my>
// 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) && (isalpha(ch) || ch == '@' || ch == '_');
}
static inline bool IsAnOther(const int ch) {
return (ch < 0x80) && (ch == '{' || ch == '}' ||
ch == '!' || ch == '$' || ch == '%' || ch == '&' || ch == '\'' ||
ch == '(' || ch == ')' || ch == '*' || ch == '+' || ch == ',' ||
ch == '-' || ch == '.' || ch == '/' || ch == ':' || ch == ';' ||
ch == '<' || ch == '=' || ch == '>' || ch == '?' || ch == '[' ||
ch == ']' || ch == '^' || ch == '`' || ch == '|' || ch == '~');
}
static void ColouriseLoutDoc(unsigned int startPos, int length, int initStyle,
WordList *keywordlists[], Accessor &styler) {
WordList &keywords = *keywordlists[0];
WordList &keywords2 = *keywordlists[1];
WordList &keywords3 = *keywordlists[2];
int visibleChars = 0;
int firstWordInLine = 0;
int leadingAtSign = 0;
StyleContext sc(startPos, length, initStyle, styler);
for (; sc.More(); sc.Forward()) {
if (sc.atLineStart && (sc.state == SCE_LOUT_STRING)) {
// Prevent SCE_LOUT_STRINGEOL from leaking back to previous line
sc.SetState(SCE_LOUT_STRING);
}
// Determine if the current state should terminate.
if (sc.state == SCE_LOUT_COMMENT) {
if (sc.atLineEnd) {
sc.SetState(SCE_LOUT_DEFAULT);
visibleChars = 0;
}
} else if (sc.state == SCE_LOUT_NUMBER) {
if (!IsADigit(sc.ch) && sc.ch != '.') {
sc.SetState(SCE_LOUT_DEFAULT);
}
} else if (sc.state == SCE_LOUT_STRING) {
if (sc.ch == '\\') {
if (sc.chNext == '\"' || sc.chNext == '\\') {
sc.Forward();
}
} else if (sc.ch == '\"') {
sc.ForwardSetState(SCE_LOUT_DEFAULT);
} else if (sc.atLineEnd) {
sc.ChangeState(SCE_LOUT_STRINGEOL);
sc.ForwardSetState(SCE_LOUT_DEFAULT);
visibleChars = 0;
}
} else if (sc.state == SCE_LOUT_IDENTIFIER) {
if (!IsAWordChar(sc.ch)) {
char s[100];
sc.GetCurrent(s, sizeof(s));
if (leadingAtSign) {
if (keywords.InList(s)) {
sc.ChangeState(SCE_LOUT_WORD);
} else {
sc.ChangeState(SCE_LOUT_WORD4);
}
} else if (firstWordInLine && keywords3.InList(s)) {
sc.ChangeState(SCE_LOUT_WORD3);
}
sc.SetState(SCE_LOUT_DEFAULT);
}
} else if (sc.state == SCE_LOUT_OPERATOR) {
if (!IsAnOther(sc.ch)) {
char s[100];
sc.GetCurrent(s, sizeof(s));
if (keywords2.InList(s)) {
sc.ChangeState(SCE_LOUT_WORD2);
}
sc.SetState(SCE_LOUT_DEFAULT);
}
}
// Determine if a new state should be entered.
if (sc.state == SCE_LOUT_DEFAULT) {
if (sc.ch == '#') {
sc.SetState(SCE_LOUT_COMMENT);
} else if (sc.ch == '\"') {
sc.SetState(SCE_LOUT_STRING);
} else if (IsADigit(sc.ch) ||
(sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(SCE_LOUT_NUMBER);
} else if (IsAWordChar(sc.ch)) {
firstWordInLine = (visibleChars == 0);
leadingAtSign = (sc.ch == '@');
sc.SetState(SCE_LOUT_IDENTIFIER);
} else if (IsAnOther(sc.ch)) {
sc.SetState(SCE_LOUT_OPERATOR);
}
}
if (sc.atLineEnd) {
// Reset states to begining of colourise so no surprises
// if different sets of lines lexed.
visibleChars = 0;
}
if (!IsASpace(sc.ch)) {
visibleChars++;
}
}
sc.Complete();
}
static void FoldLoutDoc(unsigned int startPos, int length, int, WordList *[],
Accessor &styler) {
unsigned int endPos = startPos + length;
int visibleChars = 0;
int lineCurrent = styler.GetLine(startPos);
int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
int levelCurrent = levelPrev;
char chNext = styler[startPos];
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
int styleNext = styler.StyleAt(startPos);
char s[10];
for (unsigned int i = startPos; i < endPos; i++) {
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
int style = styleNext;
styleNext = styler.StyleAt(i + 1);
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
if (style == SCE_LOUT_WORD) {
if (ch == '@') {
for (unsigned int j = 0; j < 8; j++) {
if (!IsAWordChar(styler[i + j])) {
break;
}
s[j] = styler[i + j];
s[j + 1] = '\0';
}
if (strcmp(s, "@Begin") == 0) {
levelCurrent++;
} else if (strcmp(s, "@End") == 0) {
levelCurrent--;
}
}
} else if (style == SCE_LOUT_OPERATOR) {
if (ch == '{') {
levelCurrent++;
} else if (ch == '}') {
levelCurrent--;
}
}
if (atEOL) {
int lev = levelPrev;
if (visibleChars == 0 && foldCompact) {
lev |= SC_FOLDLEVELWHITEFLAG;
}
if ((levelCurrent > levelPrev) && (visibleChars > 0)) {
lev |= SC_FOLDLEVELHEADERFLAG;
}
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
lineCurrent++;
levelPrev = levelCurrent;
visibleChars = 0;
}
if (!isspacechar(ch))
visibleChars++;
}
// Fill in the real level of the next line, keeping the current flags as they will be filled in later
int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}
static const char * const loutWordLists[] = {
"Predefined identifiers",
"Predefined delimiters",
"Predefined keywords",
0,
};
LexerModule lmLout(SCLEX_LOUT, ColouriseLoutDoc, "lout", FoldLoutDoc, loutWordLists);
|
