232 lines
6.5 KiB
C++
232 lines
6.5 KiB
C++
// SciTE - Scintilla based Text Editor
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// LexBullant.cxx - lexer for Bullant
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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using namespace Scintilla;
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static int classifyWordBullant(Sci_PositionU start, Sci_PositionU end, WordList &keywords, Accessor &styler) {
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char s[100];
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s[0] = '\0';
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for (Sci_PositionU i = 0; i < end - start + 1 && i < 30; i++) {
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s[i] = static_cast<char>(tolower(styler[start + i]));
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s[i + 1] = '\0';
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}
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int lev= 0;
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char chAttr = SCE_C_IDENTIFIER;
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if (isdigit(s[0]) || (s[0] == '.')){
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chAttr = SCE_C_NUMBER;
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}
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else {
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if (keywords.InList(s)) {
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chAttr = SCE_C_WORD;
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if (strcmp(s, "end") == 0)
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lev = -1;
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else if (strcmp(s, "method") == 0 ||
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strcmp(s, "case") == 0 ||
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strcmp(s, "class") == 0 ||
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strcmp(s, "debug") == 0 ||
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strcmp(s, "test") == 0 ||
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strcmp(s, "if") == 0 ||
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strcmp(s, "lock") == 0 ||
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strcmp(s, "transaction") == 0 ||
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strcmp(s, "trap") == 0 ||
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strcmp(s, "until") == 0 ||
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strcmp(s, "while") == 0)
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lev = 1;
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}
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}
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styler.ColourTo(end, chAttr);
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return lev;
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}
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static void ColouriseBullantDoc(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[],
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Accessor &styler) {
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WordList &keywords = *keywordlists[0];
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styler.StartAt(startPos);
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bool fold = styler.GetPropertyInt("fold") != 0;
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Sci_Position lineCurrent = styler.GetLine(startPos);
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int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
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int levelCurrent = levelPrev;
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int state = initStyle;
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if (state == SCE_C_STRINGEOL) // Does not leak onto next line
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state = SCE_C_DEFAULT;
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char chPrev = ' ';
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char chNext = styler[startPos];
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Sci_PositionU lengthDoc = startPos + length;
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int visibleChars = 0;
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styler.StartSegment(startPos);
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int endFoundThisLine = 0;
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for (Sci_PositionU i = startPos; i < lengthDoc; i++) {
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char ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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if ((ch == '\r' && chNext != '\n') || (ch == '\n')) {
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// Trigger on CR only (Mac style) or either on LF from CR+LF (Dos/Win) or on LF alone (Unix)
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// Avoid triggering two times on Dos/Win
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// End of line
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endFoundThisLine = 0;
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if (state == SCE_C_STRINGEOL) {
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styler.ColourTo(i, state);
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state = SCE_C_DEFAULT;
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}
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if (fold) {
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int lev = levelPrev;
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if (visibleChars == 0)
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lev |= SC_FOLDLEVELWHITEFLAG;
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if ((levelCurrent > levelPrev) && (visibleChars > 0))
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lev |= SC_FOLDLEVELHEADERFLAG;
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styler.SetLevel(lineCurrent, lev);
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lineCurrent++;
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levelPrev = levelCurrent;
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}
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visibleChars = 0;
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/* int indentBlock = GetLineIndentation(lineCurrent);
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if (blockChange==1){
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lineCurrent++;
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int pos=SetLineIndentation(lineCurrent, indentBlock + indentSize);
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} else if (blockChange==-1) {
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indentBlock -= indentSize;
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if (indentBlock < 0)
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indentBlock = 0;
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SetLineIndentation(lineCurrent, indentBlock);
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lineCurrent++;
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}
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blockChange=0;
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*/ }
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if (!(IsASCII(ch) && isspace(ch)))
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visibleChars++;
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if (styler.IsLeadByte(ch)) {
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chNext = styler.SafeGetCharAt(i + 2);
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chPrev = ' ';
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i += 1;
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continue;
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}
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if (state == SCE_C_DEFAULT) {
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if (iswordstart(ch)) {
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styler.ColourTo(i-1, state);
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state = SCE_C_IDENTIFIER;
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} else if (ch == '@' && chNext == 'o') {
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if ((styler.SafeGetCharAt(i+2) =='f') && (styler.SafeGetCharAt(i+3) == 'f')) {
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styler.ColourTo(i-1, state);
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state = SCE_C_COMMENT;
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}
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} else if (ch == '#') {
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styler.ColourTo(i-1, state);
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state = SCE_C_COMMENTLINE;
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} else if (ch == '\"') {
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styler.ColourTo(i-1, state);
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state = SCE_C_STRING;
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} else if (ch == '\'') {
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styler.ColourTo(i-1, state);
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state = SCE_C_CHARACTER;
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} else if (isoperator(ch)) {
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styler.ColourTo(i-1, state);
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styler.ColourTo(i, SCE_C_OPERATOR);
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}
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} else if (state == SCE_C_IDENTIFIER) {
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if (!iswordchar(ch)) {
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int levelChange = classifyWordBullant(styler.GetStartSegment(), i - 1, keywords, styler);
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state = SCE_C_DEFAULT;
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chNext = styler.SafeGetCharAt(i + 1);
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if (ch == '#') {
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state = SCE_C_COMMENTLINE;
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} else if (ch == '\"') {
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state = SCE_C_STRING;
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} else if (ch == '\'') {
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state = SCE_C_CHARACTER;
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} else if (isoperator(ch)) {
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styler.ColourTo(i, SCE_C_OPERATOR);
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}
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if (endFoundThisLine == 0)
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levelCurrent+=levelChange;
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if (levelChange == -1)
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endFoundThisLine=1;
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}
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} else if (state == SCE_C_COMMENT) {
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if (ch == '@' && chNext == 'o') {
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if (styler.SafeGetCharAt(i+2) == 'n') {
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styler.ColourTo(i+2, state);
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state = SCE_C_DEFAULT;
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i+=2;
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}
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}
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} else if (state == SCE_C_COMMENTLINE) {
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if (ch == '\r' || ch == '\n') {
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endFoundThisLine = 0;
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styler.ColourTo(i-1, state);
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state = SCE_C_DEFAULT;
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}
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} else if (state == SCE_C_STRING) {
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if (ch == '\\') {
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if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
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i++;
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ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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}
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} else if (ch == '\"') {
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styler.ColourTo(i, state);
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state = SCE_C_DEFAULT;
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} else if (chNext == '\r' || chNext == '\n') {
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endFoundThisLine = 0;
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styler.ColourTo(i-1, SCE_C_STRINGEOL);
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state = SCE_C_STRINGEOL;
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}
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} else if (state == SCE_C_CHARACTER) {
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if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
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endFoundThisLine = 0;
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styler.ColourTo(i-1, SCE_C_STRINGEOL);
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state = SCE_C_STRINGEOL;
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} else if (ch == '\\') {
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if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
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i++;
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ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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}
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} else if (ch == '\'') {
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styler.ColourTo(i, state);
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state = SCE_C_DEFAULT;
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}
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}
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chPrev = ch;
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}
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styler.ColourTo(lengthDoc - 1, state);
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// Fill in the real level of the next line, keeping the current flags as they will be filled in later
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if (fold) {
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int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
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//styler.SetLevel(lineCurrent, levelCurrent | flagsNext);
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styler.SetLevel(lineCurrent, levelPrev | flagsNext);
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}
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}
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static const char * const bullantWordListDesc[] = {
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"Keywords",
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0
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};
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LexerModule lmBullant(SCLEX_BULLANT, ColouriseBullantDoc, "bullant", 0, bullantWordListDesc);
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