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-rw-r--r--src/KeyWords.cxx2
-rw-r--r--src/LexFortran.cxx274
2 files changed, 276 insertions, 0 deletions
diff --git a/src/KeyWords.cxx b/src/KeyWords.cxx
index 7f77f2fad..d9682b606 100644
--- a/src/KeyWords.cxx
+++ b/src/KeyWords.cxx
@@ -153,6 +153,8 @@ int Scintilla_LinkLexers() {
LINK_LEXER(lmNncrontab);
LINK_LEXER(lmEiffel);
LINK_LEXER(lmEiffelkw);
+ LINK_LEXER(lmFortran);
+ LINK_LEXER(lmF77);
LINK_LEXER(lmHTML);
LINK_LEXER(lmXML);
LINK_LEXER(lmASP);
diff --git a/src/LexFortran.cxx b/src/LexFortran.cxx
new file mode 100644
index 000000000..85e84c58a
--- /dev/null
+++ b/src/LexFortran.cxx
@@ -0,0 +1,274 @@
+// Scintilla source code edit control
+/** @file LexFortran.cxx
+ ** Lexer for Fortran.
+ ** Writen by Chuan-jian Shen, Last changed Oct. 2002
+ **/
+// Copyright 1998-2001 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 == '%');
+}
+
+static inline bool IsAWordStart(const int ch) {
+ return (ch < 0x80) && (isalnum(ch));
+}
+
+static void ColouriseFortranDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+ Accessor &styler, bool isFixFormat) {
+
+ WordList &keywords = *keywordlists[0];
+ WordList &keywords2 = *keywordlists[1];
+ WordList &keywords3 = *keywordlists[2];
+
+ int posLineStart = 0;
+
+ StyleContext sc(startPos, length, initStyle, styler);
+
+ for (; sc.More(); sc.Forward()) {
+
+ if (sc.atLineStart) {
+ posLineStart = sc.currentPos;
+ if (sc.state == SCE_F_STRING1) {
+ // Prevent SCE_F_STRINGEOL from leaking back to previous line
+ sc.SetState(SCE_F_STRING1);
+ }
+ else if(sc.state == SCE_F_STRING2) {
+ sc.SetState(SCE_F_STRING2);
+ }
+ }
+
+ // 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_F_OPERATOR) {
+ sc.SetState(SCE_F_DEFAULT);
+ } else if (sc.state == SCE_F_NUMBER) {
+ if (!IsAWordChar(sc.ch)) {
+ sc.SetState(SCE_F_DEFAULT);
+ }
+ } else if (sc.state == SCE_F_IDENTIFIER) {
+ if (!IsAWordChar(sc.ch) || (sc.ch == '%')) {
+ char s[100];
+ sc.GetCurrentLowered(s, sizeof(s));
+ if (keywords.InList(s)) {
+ sc.ChangeState(SCE_F_WORD);
+ } else if (keywords2.InList(s)) {
+ sc.ChangeState(SCE_F_WORD2);
+ } else if (keywords3.InList(s)) {
+ sc.ChangeState(SCE_F_WORD3);
+ }
+ sc.SetState(SCE_F_DEFAULT);
+ }
+ } else if (sc.state == SCE_F_COMMENT) {
+ if (sc.ch == '\r' || sc.ch == '\n') {
+ sc.SetState(SCE_F_DEFAULT);
+ }
+ } else if (sc.state == SCE_F_STRING1) {
+ if (sc.ch == '&') {
+ sc.Forward();
+ } else if (sc.ch == '\'') {
+ sc.Forward();
+ if (sc.chNext == '\'') {
+ sc.Forward();
+ } else {
+ sc.SetState(SCE_F_DEFAULT);
+ }
+ } else if (sc.atLineEnd) {
+ sc.ChangeState(SCE_F_STRINGEOL);
+ sc.ForwardSetState(SCE_F_DEFAULT);
+ }
+ } else if (sc.state == SCE_F_STRING2) {
+ if (sc.atLineEnd) {
+ sc.ChangeState(SCE_F_STRINGEOL);
+ sc.ForwardSetState(SCE_F_DEFAULT);
+ } else if (sc.ch == '&') {
+ sc.Forward();
+ } else if (sc.ch == '\"') {
+ sc.Forward();
+ if (sc.chNext == '\"') {
+ sc.Forward();
+ } else {
+ sc.SetState(SCE_F_DEFAULT);
+ }
+ }
+ } else if (sc.state == SCE_F_OPERATOR2) {
+ if (sc.ch == '.') {
+ sc.ForwardSetState(SCE_F_DEFAULT);
+ }
+ } else if (sc.state == SCE_F_CONTINUATION) {
+ sc.SetState(SCE_F_DEFAULT);
+ } else if (sc.state == SCE_F_LABEL) {
+ if (sc.currentPos >= posLineStart+5) {
+ sc.SetState(SCE_F_DEFAULT);
+ }
+ }
+
+ // Determine if a new state should be entered.
+ if (sc.state == SCE_F_DEFAULT) {
+ int toLineStart = sc.currentPos - posLineStart;
+ if (isFixFormat && (toLineStart < 6 || toLineStart > 72)) {
+ if (sc.atLineStart && (tolower(sc.ch) == 'c' || sc.ch == '*')) {
+ sc.SetState(SCE_F_COMMENT);
+ } else if (toLineStart > 72) {
+ sc.SetState(SCE_F_COMMENT);
+ } else if (toLineStart < 5 && !IsASpace(sc.ch)) {
+ sc.SetState(SCE_F_LABEL);
+ } else if (toLineStart == 5 && (sc.ch != ' ' || sc.ch != '0')) {
+ sc.SetState(SCE_F_CONTINUATION);
+ }
+ } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
+ sc.SetState(SCE_F_NUMBER);
+ } else if (sc.ch == '.' && isalpha(sc.chNext)) {
+ sc.SetState(SCE_F_OPERATOR2);
+ } else if (IsAWordStart(sc.ch)) {
+ sc.SetState(SCE_F_IDENTIFIER);
+ } else if (sc.ch == '!') {
+ sc.SetState(SCE_F_COMMENT);
+ } else if (sc.ch == '\"') {
+ sc.SetState(SCE_F_STRING2);
+ } else if (sc.ch == '\'') {
+ sc.SetState(SCE_F_STRING1);
+ } else if (isoperator(static_cast<char>(sc.ch))) {
+ sc.SetState(SCE_F_OPERATOR);
+ }
+ }
+ }
+ sc.Complete();
+}
+
+static int classifyFoldPointFortran(const char* s, const char* prevWord) {
+ int lev = 0;
+ if (strcmp(prevWord, "end") == 0) return lev;
+ if (strcmp(s, "associate") == 0 || strcmp(s, "block") == 0
+ || strcmp(s, "blockdata") == 0 || strcmp(s, "case") == 0
+ || strcmp(s, "do") == 0 || strcmp(s, "enum") ==0
+ || strcmp(s, "forall") == 0 || strcmp(s, "function") == 0
+ || strcmp(s, "interface") == 0 || strcmp(s, "module") == 0
+ || strcmp(s, "program") == 0 || strcmp(s, "subroutine") == 0
+ || strcmp(s, "then") == 0 || strcmp(s, "type") == 0
+ || strcmp(s, "where") == 0) {
+ lev = 1;
+ } else if (strcmp(s, "end") == 0
+ || strcmp(s, "endassociate") == 0 || strcmp(s, "endblock") == 0
+ || strcmp(s, "endblockdata") == 0 || strcmp(s, "endselect") == 0
+ || strcmp(s, "enddo") == 0 || strcmp(s, "endenum") ==0
+ || strcmp(s, "endif") == 0
+ || strcmp(s, "endforall") == 0 || strcmp(s, "endfunction") == 0
+ || strcmp(s, "endinterface") == 0 || strcmp(s, "endmodule") == 0
+ || strcmp(s, "endprogram") == 0 || strcmp(s, "endsubroutine") == 0
+ || strcmp(s, "endtype") == 0 || strcmp(s, "endwhere") == 0) {
+ lev = -1;
+ }
+ return lev;
+}
+static void FoldFortranDoc(unsigned int startPos, int length, int initStyle, WordList *[], Accessor &styler) {
+ //~ bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
+ // Do not know how to fold the comment at the moment.
+ bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
+ 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];
+ int styleNext = styler.StyleAt(startPos);
+ int style = initStyle;
+
+ int lastStart = 0;
+ char prevWord[32] = "";
+
+ 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 (stylePrev == SCE_F_DEFAULT && style == SCE_F_WORD)
+ {
+ // Store last word start point.
+ lastStart = i;
+ }
+
+ if (style == SCE_F_WORD) {
+ if(iswordchar(ch) && !iswordchar(chNext)) {
+ char s[32];
+ unsigned int j;
+ for(j = 0; ( j < 31 ) && ( j < i-lastStart+1 ); j++) {
+ s[j] = static_cast<char>(tolower(styler[lastStart + j]));
+ }
+ s[j] = '\0';
+ levelCurrent += classifyFoldPointFortran(s, prevWord);
+ strcpy(prevWord, s);
+ }
+ }
+ 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;
+ strcpy(prevWord, "");
+ }
+
+ 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 FortranWordLists[] = {
+ "Primary keywords and identifiers",
+ "Intrinsic functions",
+ "Extended and user defined functions",
+ 0,
+};
+
+static void ColouriseFortranDocFreeFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+ Accessor &styler) {
+ ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, false);
+}
+
+static void ColouriseFortranDocFixFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+ Accessor &styler) {
+ ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, true);
+}
+
+
+LexerModule lmFortran(SCLEX_FORTRAN, ColouriseFortranDocFreeFormat, "fortran", FoldFortranDoc, FortranWordLists);
+LexerModule lmF77(SCLEX_F77, ColouriseFortranDocFixFormat, "f77", FoldFortranDoc, FortranWordLists);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-12 21:58:38 +0000