1// Scintilla source code edit control
2/** @file LexDMAP.cxx
3 ** Lexer for MSC Nastran DMAP.
4 ** Written by Mark Robinson, based on the Fortran lexer by Chuan-jian Shen, Last changed Aug. 2013
5 **/
6// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
7// The License.txt file describes the conditions under which this software may be distributed.
8/***************************************/
9#include <stdlib.h>
10#include <string.h>
11#include <stdio.h>
12#include <stdarg.h>
13#include <assert.h>
14#include <ctype.h>
15
16#include <string>
17#include <string_view>
18/***************************************/
19#include "ILexer.h"
20#include "Scintilla.h"
21#include "SciLexer.h"
22
23#include "WordList.h"
24#include "LexAccessor.h"
25#include "Accessor.h"
26#include "StyleContext.h"
27#include "CharacterSet.h"
28#include "LexerModule.h"
29/***************************************/
30
31using namespace Lexilla;
32
33/***********************************************/
34static inline bool IsAWordChar(const int ch) {
35 return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '%');
36}
37/**********************************************/
38static inline bool IsAWordStart(const int ch) {
39 return (ch < 0x80) && (isalnum(ch));
40}
41/***************************************/
42static void ColouriseDMAPDoc(Sci_PositionU startPos, Sci_Position length, int initStyle,
43 WordList *keywordlists[], Accessor &styler) {
44 WordList &keywords = *keywordlists[0];
45 WordList &keywords2 = *keywordlists[1];
46 WordList &keywords3 = *keywordlists[2];
47 /***************************************/
48 Sci_Position posLineStart = 0, numNonBlank = 0;
49 Sci_Position endPos = startPos + length;
50 /***************************************/
51 // backtrack to the nearest keyword
52 while ((startPos > 1) && (styler.StyleAt(startPos) != SCE_DMAP_WORD)) {
53 startPos--;
54 }
55 startPos = styler.LineStart(styler.GetLine(startPos));
56 initStyle = styler.StyleAt(startPos - 1);
57 StyleContext sc(startPos, endPos-startPos, initStyle, styler);
58 /***************************************/
59 for (; sc.More(); sc.Forward()) {
60 // remember the start position of the line
61 if (sc.atLineStart) {
62 posLineStart = sc.currentPos;
63 numNonBlank = 0;
64 sc.SetState(SCE_DMAP_DEFAULT);
65 }
66 if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
67 /***********************************************/
68 // Handle data appearing after column 72; it is ignored
69 Sci_Position toLineStart = sc.currentPos - posLineStart;
70 if (toLineStart >= 72 || sc.ch == '$') {
71 sc.SetState(SCE_DMAP_COMMENT);
72 while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
73 continue;
74 }
75 /***************************************/
76 // Determine if the current state should terminate.
77 if (sc.state == SCE_DMAP_OPERATOR) {
78 sc.SetState(SCE_DMAP_DEFAULT);
79 } else if (sc.state == SCE_DMAP_NUMBER) {
80 if (!(IsAWordChar(sc.ch) || sc.ch=='\'' || sc.ch=='\"' || sc.ch=='.')) {
81 sc.SetState(SCE_DMAP_DEFAULT);
82 }
83 } else if (sc.state == SCE_DMAP_IDENTIFIER) {
84 if (!IsAWordChar(sc.ch) || (sc.ch == '%')) {
85 char s[100];
86 sc.GetCurrentLowered(s, sizeof(s));
87 if (keywords.InList(s)) {
88 sc.ChangeState(SCE_DMAP_WORD);
89 } else if (keywords2.InList(s)) {
90 sc.ChangeState(SCE_DMAP_WORD2);
91 } else if (keywords3.InList(s)) {
92 sc.ChangeState(SCE_DMAP_WORD3);
93 }
94 sc.SetState(SCE_DMAP_DEFAULT);
95 }
96 } else if (sc.state == SCE_DMAP_COMMENT) {
97 if (sc.ch == '\r' || sc.ch == '\n') {
98 sc.SetState(SCE_DMAP_DEFAULT);
99 }
100 } else if (sc.state == SCE_DMAP_STRING1) {
101 if (sc.ch == '\'') {
102 if (sc.chNext == '\'') {
103 sc.Forward();
104 } else {
105 sc.ForwardSetState(SCE_DMAP_DEFAULT);
106 }
107 } else if (sc.atLineEnd) {
108 sc.ChangeState(SCE_DMAP_STRINGEOL);
109 sc.ForwardSetState(SCE_DMAP_DEFAULT);
110 }
111 } else if (sc.state == SCE_DMAP_STRING2) {
112 if (sc.atLineEnd) {
113 sc.ChangeState(SCE_DMAP_STRINGEOL);
114 sc.ForwardSetState(SCE_DMAP_DEFAULT);
115 } else if (sc.ch == '\"') {
116 if (sc.chNext == '\"') {
117 sc.Forward();
118 } else {
119 sc.ForwardSetState(SCE_DMAP_DEFAULT);
120 }
121 }
122 }
123 /***************************************/
124 // Determine if a new state should be entered.
125 if (sc.state == SCE_DMAP_DEFAULT) {
126 if (sc.ch == '$') {
127 sc.SetState(SCE_DMAP_COMMENT);
128 } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext)) || (sc.ch == '-' && IsADigit(sc.chNext))) {
129 sc.SetState(SCE_F_NUMBER);
130 } else if (IsAWordStart(sc.ch)) {
131 sc.SetState(SCE_DMAP_IDENTIFIER);
132 } else if (sc.ch == '\"') {
133 sc.SetState(SCE_DMAP_STRING2);
134 } else if (sc.ch == '\'') {
135 sc.SetState(SCE_DMAP_STRING1);
136 } else if (isoperator(static_cast<char>(sc.ch))) {
137 sc.SetState(SCE_DMAP_OPERATOR);
138 }
139 }
140 }
141 sc.Complete();
142}
143/***************************************/
144// To determine the folding level depending on keywords
145static int classifyFoldPointDMAP(const char* s, const char* prevWord) {
146 int lev = 0;
147 if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) || strcmp(s, "enddo") == 0 || strcmp(s, "endif") == 0) {
148 lev = -1;
149 } else if ((strcmp(prevWord, "do") == 0 && strcmp(s, "while") == 0) || strcmp(s, "then") == 0) {
150 lev = 1;
151 }
152 return lev;
153}
154// Folding the code
155static void FoldDMAPDoc(Sci_PositionU startPos, Sci_Position length, int initStyle,
156 WordList *[], Accessor &styler) {
157 //
158 // bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
159 // Do not know how to fold the comment at the moment.
160 //
161 bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
162 Sci_PositionU endPos = startPos + length;
163 int visibleChars = 0;
164 Sci_Position lineCurrent = styler.GetLine(startPos);
165 int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
166 int levelCurrent = levelPrev;
167 char chNext = styler[startPos];
168 int styleNext = styler.StyleAt(startPos);
169 int style = initStyle;
170 /***************************************/
171 Sci_Position lastStart = 0;
172 char prevWord[32] = "";
173 /***************************************/
174 for (Sci_PositionU i = startPos; i < endPos; i++) {
175 char ch = chNext;
176 chNext = styler.SafeGetCharAt(i + 1);
177 int stylePrev = style;
178 style = styleNext;
179 styleNext = styler.StyleAt(i + 1);
180 bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
181 //
182 if ((stylePrev == SCE_DMAP_DEFAULT || stylePrev == SCE_DMAP_OPERATOR || stylePrev == SCE_DMAP_COMMENT) && (style == SCE_DMAP_WORD)) {
183 // Store last word and label start point.
184 lastStart = i;
185 }
186 /***************************************/
187 if (style == SCE_DMAP_WORD) {
188 if(iswordchar(ch) && !iswordchar(chNext)) {
189 char s[32];
190 Sci_PositionU k;
191 for(k=0; (k<31 ) && (k<i-lastStart+1 ); k++) {
192 s[k] = static_cast<char>(tolower(styler[lastStart+k]));
193 }
194 s[k] = '\0';
195 levelCurrent += classifyFoldPointDMAP(s, prevWord);
196 strcpy(prevWord, s);
197 }
198 }
199 if (atEOL) {
200 int lev = levelPrev;
201 if (visibleChars == 0 && foldCompact)
202 lev |= SC_FOLDLEVELWHITEFLAG;
203 if ((levelCurrent > levelPrev) && (visibleChars > 0))
204 lev |= SC_FOLDLEVELHEADERFLAG;
205 if (lev != styler.LevelAt(lineCurrent)) {
206 styler.SetLevel(lineCurrent, lev);
207 }
208 lineCurrent++;
209 levelPrev = levelCurrent;
210 visibleChars = 0;
211 strcpy(prevWord, "");
212 }
213 /***************************************/
214 if (!isspacechar(ch)) visibleChars++;
215 }
216 /***************************************/
217 // Fill in the real level of the next line, keeping the current flags as they will be filled in later
218 int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
219 styler.SetLevel(lineCurrent, levelPrev | flagsNext);
220}
221/***************************************/
222static const char * const DMAPWordLists[] = {
223 "Primary keywords and identifiers",
224 "Intrinsic functions",
225 "Extended and user defined functions",
226 0,
227};
228/***************************************/
229LexerModule lmDMAP(SCLEX_DMAP, ColouriseDMAPDoc, "DMAP", FoldDMAPDoc, DMAPWordLists);
230