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Diffstat (limited to 'src/LexFlagship.cpp')
| -rw-r--r-- | src/LexFlagship.cpp | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/src/LexFlagship.cpp b/src/LexFlagship.cpp new file mode 100644 index 0000000..db0314e --- /dev/null +++ b/src/LexFlagship.cpp @@ -0,0 +1,226 @@ +// Scintilla source code edit control +/** @file LexFlagShip.cxx + ** Lexer for FlagShip + ** (Syntactically compatible to other XBase dialects, like dBase, Clipper, Fox etc.) + **/ +// Copyright 2005 by Randy Butler +// Copyright 1998-2003 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 bool IsFlagShipComment(Accessor &styler, int pos, int len) { + return len>0 && styler[pos]=='\''; +} + +static inline bool IsTypeCharacter(int ch) { + return ch == '%' || ch == '&' || ch == '@' || ch == '!' || ch == '#' || ch == '$'; +} + +// Extended to accept accented characters +static inline bool IsAWordChar(int ch) { + return ch >= 0x80 || + (isalnum(ch) || ch == '.' || ch == '_'); +} + +static inline bool IsAWordStart(int ch) { + return ch >= 0x80 || + (isalnum(ch) || ch == '_'); +} + +static inline bool IsADateCharacter(const int ch) { + return (ch < 0x80) && + (isalnum(ch) || ch == '|' || ch == '-' || ch == '/' || ch == ':' || ch == ' ' || ch == '\t'); +} + + +static void ColouriseFlagShipDoc(unsigned int startPos, int length, int initStyle, + WordList *keywordlists[], Accessor &styler) { + + //bool FSScriptSyntax = true; + WordList &keywords = *keywordlists[0]; + WordList &keywords2 = *keywordlists[1]; + WordList &keywords3 = *keywordlists[2]; + WordList &keywords4 = *keywordlists[3]; + + styler.StartAt(startPos); + + int visibleChars = 0; + + StyleContext sc(startPos, length, initStyle, styler); + + for (; sc.More(); sc.Forward()) { + + if (sc.state == SCE_FS_OPERATOR) { + sc.SetState(SCE_FS_DEFAULT); + } else if (sc.state == SCE_FS_IDENTIFIER) { + if (!IsAWordChar(sc.ch)) { + char s[100]; + sc.GetCurrentLowered(s, sizeof(s)); + if (keywords.InList(s)) { + sc.ChangeState(SCE_FS_KEYWORD); + } else if (keywords2.InList(s)) { + sc.ChangeState(SCE_FS_KEYWORD2); + } else if (keywords3.InList(s)) { + sc.ChangeState(SCE_FS_KEYWORD3); + } else if (keywords4.InList(s)) { + sc.ChangeState(SCE_FS_KEYWORD4); + }// Else, it is really an identifier... + sc.SetState(SCE_FS_DEFAULT); + } + } else if (sc.state == SCE_FS_NUMBER) { + if (!IsAWordChar(sc.ch)) { + sc.SetState(SCE_FS_DEFAULT); + } + } else if (sc.state == SCE_FS_STRING) { + // VB doubles quotes to preserve them, so just end this string + // state now as a following quote will start again + if (sc.ch == '\"') { + if (tolower(sc.chNext) == 'c') { + sc.Forward(); + } + sc.ForwardSetState(SCE_FS_DEFAULT); + } else if (sc.atLineEnd) { + sc.ChangeState(SCE_FS_STRINGEOL); + sc.ForwardSetState(SCE_FS_DEFAULT); + } + } else if (sc.state == SCE_FS_COMMENT) { + if (sc.Match('*', '/')) { // new code + sc.Forward(); + sc.ForwardSetState(SCE_FS_DEFAULT); + //if (sc.atLineEnd) { // old code + // sc.SetState(SCE_FS_DEFAULT); + } + } else if (sc.state == SCE_FS_COMMENTLINE) { //new code + if (sc.ch == '\r' || sc.ch == '\n') { + sc.SetState(SCE_FS_DEFAULT); + visibleChars = 0; + } + } else if (sc.state == SCE_FS_PREPROCESSOR) { + if (sc.atLineEnd) { + sc.SetState(SCE_FS_DEFAULT); + } + } else if (sc.state == SCE_FS_DATE) { + if (sc.ch == '#' || !IsADateCharacter(sc.chNext)) { + sc.ForwardSetState(SCE_FS_DEFAULT); + } + } + + // Determine if a new state should be entered. + if (sc.state == SCE_FS_DEFAULT) { + if (sc.Match('/', '*')) { // New code + sc.SetState(SCE_FS_COMMENT); + sc.Forward(); // Eat the * so it isn't used for the end of the comment + //if (sc.ch == '\'') { // Old code + // sc.SetState(SCE_FS_COMMENT); // old code + } else if (sc.Match('/', '/')) { // New code + sc.SetState(SCE_FS_COMMENTLINE); + } else if (sc.ch == '\"') { + sc.SetState(SCE_FS_STRING); + } else if (sc.ch == '#' && visibleChars == 0) { + // Preprocessor commands are alone on their line + sc.SetState(SCE_FS_PREPROCESSOR); + } else if (sc.ch == '#') { + int n = 1; + int chSeek = ' '; + while ((n < 100) && (chSeek == ' ' || chSeek == '\t')) { + chSeek = sc.GetRelative(n); + n++; + } + if (IsADigit(chSeek)) { + sc.SetState(SCE_FS_DATE); + } else { + sc.SetState(SCE_FS_OPERATOR); + } + } else if (sc.ch == '&' && tolower(sc.chNext) == 'h') { + sc.SetState(SCE_FS_NUMBER); + } else if (sc.ch == '&' && tolower(sc.chNext) == 'o') { + sc.SetState(SCE_FS_NUMBER); + } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) { + sc.SetState(SCE_FS_NUMBER); + } else if (IsAWordStart(sc.ch) || (sc.ch == '[')) { + sc.SetState(SCE_FS_IDENTIFIER); + } else if (isoperator(static_cast<char>(sc.ch)) || (sc.ch == '\\')) { + sc.SetState(SCE_FS_OPERATOR); + } + } + + if (sc.atLineEnd) { + visibleChars = 0; + } + if (!IsASpace(sc.ch)) { + visibleChars++; + } + } + sc.Complete(); +} + +static void FoldFlagShipDoc(unsigned int startPos, int length, int, + WordList *[], Accessor &styler) { + + int endPos = startPos + length; + + // Backtrack to previous line in case need to fix its fold status + int lineCurrent = styler.GetLine(startPos); + if (startPos > 0) { + if (lineCurrent > 0) { + lineCurrent--; + startPos = styler.LineStart(lineCurrent); + } + } + int spaceFlags = 0; + int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsFlagShipComment); + char chNext = styler[startPos]; + for (int i = startPos; i < endPos; i++) { + char ch = chNext; + chNext = styler.SafeGetCharAt(i + 1); + + if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) { + int lev = indentCurrent; + int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsFlagShipComment); + if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) { + // Only non whitespace lines can be headers + if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) { + lev |= SC_FOLDLEVELHEADERFLAG; + } else if (indentNext & SC_FOLDLEVELWHITEFLAG) { + // Line after is blank so check the next - maybe should continue further? + int spaceFlags2 = 0; + int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsFlagShipComment); + if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) { + lev |= SC_FOLDLEVELHEADERFLAG; + } + } + } + indentCurrent = indentNext; + styler.SetLevel(lineCurrent, lev); + lineCurrent++; + } + } +} + + +static const char * const FSWordListDesc[] = { + "Keywords", + "functions", + "user2", + "user3", + 0 +}; + +LexerModule lmFlagShip(SCLEX_FLAGSHIP, ColouriseFlagShipDoc, "flagship", FoldFlagShipDoc, FSWordListDesc); + + + |