1 // Scintilla source code edit control
2 /** @file LexFlagShip.cxx
3 ** Lexer for FlagShip
4 ** (Syntactically compatible to other XBase dialects, like dBase, Clipper, Fox etc.)
5 **/
6 // Copyright 2005 by Randy Butler
7 // Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org>
8 // The License.txt file describes the conditions under which this software may be distributed.
9
10 #include <stdlib.h>
11 #include <string.h>
12 #include <ctype.h>
13 #include <stdio.h>
14 #include <stdarg.h>
15
16 #include "Platform.h"
17
18 #include "PropSet.h"
19 #include "Accessor.h"
20 #include "StyleContext.h"
21 #include "KeyWords.h"
22 #include "Scintilla.h"
23 #include "SciLexer.h"
24
IsFlagShipComment(Accessor & styler,int pos,int len)25 static bool IsFlagShipComment(Accessor &styler, int pos, int len) {
26 return len>0 && styler[pos]=='\'';
27 }
28
IsTypeCharacter(int ch)29 static inline bool IsTypeCharacter(int ch) {
30 return ch == '%' || ch == '&' || ch == '@' || ch == '!' || ch == '#' || ch == '$';
31 }
32
33 // Extended to accept accented characters
IsAWordChar(int ch)34 static inline bool IsAWordChar(int ch) {
35 return ch >= 0x80 ||
36 (isalnum(ch) || ch == '.' || ch == '_');
37 }
38
IsAWordStart(int ch)39 static inline bool IsAWordStart(int ch) {
40 return ch >= 0x80 ||
41 (isalnum(ch) || ch == '_');
42 }
43
IsADateCharacter(const int ch)44 static inline bool IsADateCharacter(const int ch) {
45 return (ch < 0x80) &&
46 (isalnum(ch) || ch == '|' || ch == '-' || ch == '/' || ch == ':' || ch == ' ' || ch == '\t');
47 }
48
49
ColouriseFlagShipDoc(unsigned int startPos,int length,int initStyle,WordList * keywordlists[],Accessor & styler)50 static void ColouriseFlagShipDoc(unsigned int startPos, int length, int initStyle,
51 WordList *keywordlists[], Accessor &styler) {
52
53 //bool FSScriptSyntax = true;
54 WordList &keywords = *keywordlists[0];
55 WordList &keywords2 = *keywordlists[1];
56 WordList &keywords3 = *keywordlists[2];
57 WordList &keywords4 = *keywordlists[3];
58
59 styler.StartAt(startPos);
60
61 int visibleChars = 0;
62
63 StyleContext sc(startPos, length, initStyle, styler);
64
65 for (; sc.More(); sc.Forward()) {
66
67 if (sc.state == SCE_FS_OPERATOR) {
68 sc.SetState(SCE_FS_DEFAULT);
69 } else if (sc.state == SCE_FS_IDENTIFIER) {
70 if (!IsAWordChar(sc.ch)) {
71 char s[100];
72 sc.GetCurrentLowered(s, sizeof(s));
73 if (keywords.InList(s)) {
74 sc.ChangeState(SCE_FS_KEYWORD);
75 } else if (keywords2.InList(s)) {
76 sc.ChangeState(SCE_FS_KEYWORD2);
77 } else if (keywords3.InList(s)) {
78 sc.ChangeState(SCE_FS_KEYWORD3);
79 } else if (keywords4.InList(s)) {
80 sc.ChangeState(SCE_FS_KEYWORD4);
81 }// Else, it is really an identifier...
82 sc.SetState(SCE_FS_DEFAULT);
83 }
84 } else if (sc.state == SCE_FS_NUMBER) {
85 if (!IsAWordChar(sc.ch)) {
86 sc.SetState(SCE_FS_DEFAULT);
87 }
88 } else if (sc.state == SCE_FS_STRING) {
89 // VB doubles quotes to preserve them, so just end this string
90 // state now as a following quote will start again
91 if (sc.ch == '\"') {
92 if (tolower(sc.chNext) == 'c') {
93 sc.Forward();
94 }
95 sc.ForwardSetState(SCE_FS_DEFAULT);
96 } else if (sc.atLineEnd) {
97 sc.ChangeState(SCE_FS_STRINGEOL);
98 sc.ForwardSetState(SCE_FS_DEFAULT);
99 }
100 } else if (sc.state == SCE_FS_COMMENT) {
101 if (sc.Match('*', '/')) { // new code
102 sc.Forward();
103 sc.ForwardSetState(SCE_FS_DEFAULT);
104 //if (sc.atLineEnd) { // old code
105 // sc.SetState(SCE_FS_DEFAULT);
106 }
107 } else if (sc.state == SCE_FS_COMMENTLINE) { //new code
108 if (sc.ch == '\r' || sc.ch == '\n') {
109 sc.SetState(SCE_FS_DEFAULT);
110 visibleChars = 0;
111 }
112 } else if (sc.state == SCE_FS_PREPROCESSOR) {
113 if (sc.atLineEnd) {
114 sc.SetState(SCE_FS_DEFAULT);
115 }
116 } else if (sc.state == SCE_FS_DATE) {
117 if (sc.ch == '#' || !IsADateCharacter(sc.chNext)) {
118 sc.ForwardSetState(SCE_FS_DEFAULT);
119 }
120 }
121
122 // Determine if a new state should be entered.
123 if (sc.state == SCE_FS_DEFAULT) {
124 if (sc.Match('/', '*')) { // New code
125 sc.SetState(SCE_FS_COMMENT);
126 sc.Forward(); // Eat the * so it isn't used for the end of the comment
127 //if (sc.ch == '\'') { // Old code
128 // sc.SetState(SCE_FS_COMMENT); // old code
129 } else if (sc.Match('/', '/')) { // New code
130 sc.SetState(SCE_FS_COMMENTLINE);
131 } else if (sc.ch == '\"') {
132 sc.SetState(SCE_FS_STRING);
133 } else if (sc.ch == '#' && visibleChars == 0) {
134 // Preprocessor commands are alone on their line
135 sc.SetState(SCE_FS_PREPROCESSOR);
136 } else if (sc.ch == '#') {
137 int n = 1;
138 int chSeek = ' ';
139 while ((n < 100) && (chSeek == ' ' || chSeek == '\t')) {
140 chSeek = sc.GetRelative(n);
141 n++;
142 }
143 if (IsADigit(chSeek)) {
144 sc.SetState(SCE_FS_DATE);
145 } else {
146 sc.SetState(SCE_FS_OPERATOR);
147 }
148 } else if (sc.ch == '&' && tolower(sc.chNext) == 'h') {
149 sc.SetState(SCE_FS_NUMBER);
150 } else if (sc.ch == '&' && tolower(sc.chNext) == 'o') {
151 sc.SetState(SCE_FS_NUMBER);
152 } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
153 sc.SetState(SCE_FS_NUMBER);
154 } else if (IsAWordStart(sc.ch) || (sc.ch == '[')) {
155 sc.SetState(SCE_FS_IDENTIFIER);
156 } else if (isoperator(static_cast<char>(sc.ch)) || (sc.ch == '\\')) {
157 sc.SetState(SCE_FS_OPERATOR);
158 }
159 }
160
161 if (sc.atLineEnd) {
162 visibleChars = 0;
163 }
164 if (!IsASpace(sc.ch)) {
165 visibleChars++;
166 }
167 }
168 sc.Complete();
169 }
170
FoldFlagShipDoc(unsigned int startPos,int length,int,WordList * [],Accessor & styler)171 static void FoldFlagShipDoc(unsigned int startPos, int length, int,
172 WordList *[], Accessor &styler) {
173
174 int endPos = startPos + length;
175
176 // Backtrack to previous line in case need to fix its fold status
177 int lineCurrent = styler.GetLine(startPos);
178 if (startPos > 0) {
179 if (lineCurrent > 0) {
180 lineCurrent--;
181 startPos = styler.LineStart(lineCurrent);
182 }
183 }
184 int spaceFlags = 0;
185 int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsFlagShipComment);
186 char chNext = styler[startPos];
187 for (int i = startPos; i < endPos; i++) {
188 char ch = chNext;
189 chNext = styler.SafeGetCharAt(i + 1);
190
191 if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) {
192 int lev = indentCurrent;
193 int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsFlagShipComment);
194 if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
195 // Only non whitespace lines can be headers
196 if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
197 lev |= SC_FOLDLEVELHEADERFLAG;
198 } else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
199 // Line after is blank so check the next - maybe should continue further?
200 int spaceFlags2 = 0;
201 int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsFlagShipComment);
202 if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
203 lev |= SC_FOLDLEVELHEADERFLAG;
204 }
205 }
206 }
207 indentCurrent = indentNext;
208 styler.SetLevel(lineCurrent, lev);
209 lineCurrent++;
210 }
211 }
212 }
213
214
215 static const char * const FSWordListDesc[] = {
216 "Keywords",
217 "functions",
218 "user2",
219 "user3",
220 0
221 };
222
223 LexerModule lmFlagShip(SCLEX_FLAGSHIP, ColouriseFlagShipDoc, "flagship", FoldFlagShipDoc, FSWordListDesc);
224
225
226
227