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Diffstat (limited to 'src/LexPB.cxx')
| -rw-r--r-- | src/LexPB.cxx | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/src/LexPB.cxx b/src/LexPB.cxx deleted file mode 100644 index abc0ddc79..000000000 --- a/src/LexPB.cxx +++ /dev/null @@ -1,362 +0,0 @@ -// Scintilla source code edit control -// @file LexPB.cxx -// Lexer for PowerBasic by Roland Walter, roland@rowalt.de (for PowerBasic see www.powerbasic.com) -// -// Changes: -// 17.10.2003: Toggling of subs/functions now until next sub/function - this gives better results -// 29.10.2003: 1. Bug: Toggling didn't work for subs/functions added in editor -// 2. Own colors for PB constants and Inline Assembler SCE_B_CONSTANT and SCE_B_ASM -// 3. Several smaller syntax coloring improvements and speed optimizations -// 12.07.2004: 1. Toggling for macros added -// 2. Further folding speed optimitations (for people dealing with very large listings) -// -// Necessary changes for the PB lexer in Scintilla project: -// - In SciLexer.h and Scintilla.iface: -// -// #define SCLEX_POWERBASIC 51 //ID for PowerBasic lexer -// (...) -// #define SCE_B_DEFAULT 0 //in both VB and PB lexer -// #define SCE_B_COMMENT 1 //in both VB and PB lexer -// #define SCE_B_NUMBER 2 //in both VB and PB lexer -// #define SCE_B_KEYWORD 3 //in both VB and PB lexer -// #define SCE_B_STRING 4 //in both VB and PB lexer -// #define SCE_B_PREPROCESSOR 5 //VB lexer only, not in PB lexer -// #define SCE_B_OPERATOR 6 //in both VB and PB lexer -// #define SCE_B_IDENTIFIER 7 //in both VB and PB lexer -// #define SCE_B_DATE 8 //VB lexer only, not in PB lexer -// #define SCE_B_CONSTANT 13 //PB lexer only, not in VB lexer -// #define SCE_B_ASM 14 //PB lexer only, not in VB lexer - -// - Statement added to KeyWords.cxx: 'LINK_LEXER(lmPB);' -// - Statement added to scintilla_vc6.mak: '$(DIR_O)\LexPB.obj: ...\src\LexPB.cxx $(LEX_HEADERS)' -// -// Copyright for Scintilla: 1998-2001 by Neil Hodgson <neilh@scintilla.org> -// The License.txt file describes the conditions under which this software may be distributed. - -#include <stdlib.h> -#include <string.h> -#include <ctype.h> -#include <stdio.h> -#include <stdarg.h> - -#include "Platform.h" - -#include "PropSet.h" -#include "Accessor.h" -#include "StyleContext.h" -#include "KeyWords.h" -#include "Scintilla.h" -#include "SciLexer.h" - -#ifdef SCI_NAMESPACE -using namespace Scintilla; -#endif - -static inline bool IsTypeCharacter(const int ch) -{ - return ch == '%' || ch == '&' || ch == '@' || ch == '!' || ch == '#' || ch == '$' || ch == '?'; -} - -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) || ch == '_'); -} - -bool MatchUpperCase(Accessor &styler, int pos, const char *s) //Same as styler.Match() but uppercase comparison (a-z,A-Z and space only) -{ - char ch; - for (int i=0; *s; i++) - { - ch=styler.SafeGetCharAt(pos+i); - if (ch > 0x60) ch -= '\x20'; - if (*s != ch) return false; - s++; - } - return true; -} - -static void ColourisePBDoc(unsigned int startPos, int length, int initStyle,WordList *keywordlists[],Accessor &styler) { - - WordList &keywords = *keywordlists[0]; - - styler.StartAt(startPos); - - StyleContext sc(startPos, length, initStyle, styler); - - for (; sc.More(); sc.Forward()) { - switch (sc.state) - { - case SCE_B_OPERATOR: - { - sc.SetState(SCE_B_DEFAULT); - break; - } - case SCE_B_KEYWORD: - { - if (!IsAWordChar(sc.ch)) - { - if (!IsTypeCharacter(sc.ch)) - { - char s[100]; - sc.GetCurrentLowered(s, sizeof(s)); - if (keywords.InList(s)) - { - if (strcmp(s, "rem") == 0) - { - sc.ChangeState(SCE_B_COMMENT); - if (sc.atLineEnd) {sc.SetState(SCE_B_DEFAULT);} - } - else if (strcmp(s, "asm") == 0) - { - sc.ChangeState(SCE_B_ASM); - if (sc.atLineEnd) {sc.SetState(SCE_B_DEFAULT);} - } - else - { - sc.SetState(SCE_B_DEFAULT); - } - } - else - { - sc.ChangeState(SCE_B_IDENTIFIER); - sc.SetState(SCE_B_DEFAULT); - } - } - } - break; - } - case SCE_B_NUMBER: - { - if (!IsAWordChar(sc.ch)) {sc.SetState(SCE_B_DEFAULT);} - break; - } - case SCE_B_STRING: - { - if (sc.ch == '\"'){sc.ForwardSetState(SCE_B_DEFAULT);} - break; - } - case SCE_B_CONSTANT: - { - if (!IsAWordChar(sc.ch)) {sc.SetState(SCE_B_DEFAULT);} - break; - } - case SCE_B_COMMENT: - { - if (sc.atLineEnd) {sc.SetState(SCE_B_DEFAULT);} - break; - } - case SCE_B_ASM: - { - if (sc.atLineEnd) {sc.SetState(SCE_B_DEFAULT);} - break; - } - } //switch (sc.state) - - // Determine if a new state should be entered: - if (sc.state == SCE_B_DEFAULT) - { - if (sc.ch == '\'') {sc.SetState(SCE_B_COMMENT);} - else if (sc.ch == '\"') {sc.SetState(SCE_B_STRING);} - else if (sc.ch == '&' && tolower(sc.chNext) == 'h') {sc.SetState(SCE_B_NUMBER);} - else if (sc.ch == '&' && tolower(sc.chNext) == 'b') {sc.SetState(SCE_B_NUMBER);} - else if (sc.ch == '&' && tolower(sc.chNext) == 'o') {sc.SetState(SCE_B_NUMBER);} - else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {sc.SetState(SCE_B_NUMBER);} - else if (IsAWordStart(sc.ch)) {sc.SetState(SCE_B_KEYWORD);} - else if (sc.ch == '%') {sc.SetState(SCE_B_CONSTANT);} - else if (sc.ch == '$') {sc.SetState(SCE_B_CONSTANT);} - else if (sc.ch == '#') {sc.SetState(SCE_B_KEYWORD);} - else if (sc.ch == '!') {sc.SetState(SCE_B_ASM);} - else if (isoperator(static_cast<char>(sc.ch)) || (sc.ch == '\\')) {sc.SetState(SCE_B_OPERATOR);} - } - } //for (; sc.More(); sc.Forward()) - sc.Complete(); -} - -//The folding routine for PowerBasic toggles SUBs and FUNCTIONs only. This was exactly what I wanted, -//nothing more. I had worked with this kind of toggling for several years when I used the great good old -//GFA Basic which is dead now. After testing the feature of toggling FOR-NEXT loops, WHILE-WEND loops -//and so on too I found this is more disturbing then helping (for me). So if You think in another way -//you can (or must) write Your own toggling routine ;-) -static void FoldPBDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler) -{ - // No folding enabled, no reason to continue... - if( styler.GetPropertyInt("fold") == 0 ) - return; - - unsigned int endPos = startPos + length; - int lineCurrent = styler.GetLine(startPos); - int levelCurrent = SC_FOLDLEVELBASE; - if (lineCurrent > 0) - levelCurrent = styler.LevelAt(lineCurrent-1) >> 16; - int levelNext = levelCurrent; - char chNext = styler[startPos]; - - bool fNewLine=true; - bool fMightBeMultiLineMacro=false; - bool fBeginOfCommentFound=false; - for (unsigned int i = startPos; i < endPos; i++) - { - char ch = chNext; - chNext = styler.SafeGetCharAt(i + 1); - - if (fNewLine) //Begin of a new line (The Sub/Function/Macro keywords may occur at begin of line only) - { - fNewLine=false; - fBeginOfCommentFound=false; - switch (ch) - { - case ' ': //Most lines start with space - so check this first, the code is the same as for 'default:' - case '\t': //Handle tab too - { - int levelUse = levelCurrent; - int lev = levelUse | levelNext << 16; - styler.SetLevel(lineCurrent, lev); - break; - } - case 'F': - case 'f': - { - switch (chNext) - { - case 'U': - case 'u': - { - if( MatchUpperCase(styler,i,"FUNCTION") ) - { - styler.SetLevel(lineCurrent, (SC_FOLDLEVELBASE << 16) | SC_FOLDLEVELHEADERFLAG); - levelNext=SC_FOLDLEVELBASE+1; - } - break; - } - } - break; - } - case 'S': - case 's': - { - switch (chNext) - { - case 'U': - case 'u': - { - if( MatchUpperCase(styler,i,"SUB") ) - { - styler.SetLevel(lineCurrent, (SC_FOLDLEVELBASE << 16) | SC_FOLDLEVELHEADERFLAG); - levelNext=SC_FOLDLEVELBASE+1; - } - break; - } - case 'T': - case 't': - { - if( MatchUpperCase(styler,i,"STATIC FUNCTION") ) - { - styler.SetLevel(lineCurrent, (SC_FOLDLEVELBASE << 16) | SC_FOLDLEVELHEADERFLAG); - levelNext=SC_FOLDLEVELBASE+1; - } - else if( MatchUpperCase(styler,i,"STATIC SUB") ) - { - styler.SetLevel(lineCurrent, (SC_FOLDLEVELBASE << 16) | SC_FOLDLEVELHEADERFLAG); - levelNext=SC_FOLDLEVELBASE+1; - } - break; - } - } - break; - } - case 'C': - case 'c': - { - switch (chNext) - { - case 'A': - case 'a': - { - if( MatchUpperCase(styler,i,"CALLBACK FUNCTION") ) - { - styler.SetLevel(lineCurrent, (SC_FOLDLEVELBASE << 16) | SC_FOLDLEVELHEADERFLAG); - levelNext=SC_FOLDLEVELBASE+1; - } - break; - } - } - break; - } - case 'M': - case 'm': - { - switch (chNext) - { - case 'A': - case 'a': - { - if( MatchUpperCase(styler,i,"MACRO") ) - { - fMightBeMultiLineMacro=true; //Set folder level at end of line, we have to check for single line macro - } - break; - } - } - break; - } - default: - { - int levelUse = levelCurrent; - int lev = levelUse | levelNext << 16; - styler.SetLevel(lineCurrent, lev); - break; - } - } //switch (ch) - } //if( fNewLine ) - - switch (ch) - { - case '=': //To test single line macros - { - if (fBeginOfCommentFound==false) - fMightBeMultiLineMacro=false; //The found macro is a single line macro only; - break; - } - case '\'': //A comment starts - { - fBeginOfCommentFound=true; - break; - } - case '\n': - { - if (fMightBeMultiLineMacro) //The current line is the begin of a multi line macro - { - fMightBeMultiLineMacro=false; - styler.SetLevel(lineCurrent, (SC_FOLDLEVELBASE << 16) | SC_FOLDLEVELHEADERFLAG); - levelNext=SC_FOLDLEVELBASE+1; - } - lineCurrent++; - levelCurrent = levelNext; - fNewLine=true; - break; - } - case '\r': - { - if (chNext != '\n') - { - lineCurrent++; - levelCurrent = levelNext; - fNewLine=true; - } - break; - } - } //switch (ch) - } //for (unsigned int i = startPos; i < endPos; i++) -} - -static const char * const pbWordListDesc[] = { - "Keywords", - 0 -}; - -LexerModule lmPB(SCLEX_POWERBASIC, ColourisePBDoc, "powerbasic", FoldPBDoc, pbWordListDesc); |