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Diffstat (limited to 'src/LexSQL.cxx')
| -rw-r--r-- | src/LexSQL.cxx | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/LexSQL.cxx b/src/LexSQL.cxx new file mode 100644 index 000000000..c76dd3b07 --- /dev/null +++ b/src/LexSQL.cxx @@ -0,0 +1,158 @@ +// SciTE - Scintilla based Text Editor +// LexSQL.cxx - lexer for SQL +// Copyright 1998-2000 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 "KeyWords.h" +#include "Scintilla.h" +#include "SciLexer.h" + +static void classifyWordSQL(unsigned int start, unsigned int end, WordList &keywords, StylingContext &styler) { + char s[100]; + bool wordIsNumber = isdigit(styler[start]) || (styler[start] == '.'); + for (unsigned int i = 0; i < end - start + 1 && i < 30; i++) { + s[i] = toupper(styler[start + i]); + s[i + 1] = '\0'; + } + char chAttr = SCE_C_IDENTIFIER; + if (wordIsNumber) + chAttr = SCE_C_NUMBER; + else { + if (keywords.InList(s)) + chAttr = SCE_C_WORD; + } + styler.ColourTo(end, chAttr); +} + +static void ColouriseSQLDoc(unsigned int startPos, int length, + int initStyle, WordList *keywordlists[], StylingContext &styler) { + + WordList &keywords = *keywordlists[0]; + + styler.StartAt(startPos); + + bool fold = styler.GetPropSet().GetInt("fold"); + int lineCurrent = styler.GetLine(startPos); + int spaceFlags = 0; + int indentCurrent = 0; + + int state = initStyle; + char chPrev = ' '; + char chNext = styler[startPos]; + styler.StartSegment(startPos); + unsigned int lengthDoc = startPos + length; + bool prevCr = false; + for (unsigned int i = startPos; i <= lengthDoc; i++) { + char ch = chNext; + chNext = styler.SafeGetCharAt(i + 1); + + if ((ch == '\r' && chNext != '\n') || (ch == '\n')) { + indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags); + int lev = indentCurrent; + if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) { + // Only non whitespace lines can be headers + int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags); + if (indentCurrent < (indentNext & ~SC_FOLDLEVELWHITEFLAG)) { + lev |= SC_FOLDLEVELHEADERFLAG; + } + } + if (fold) { + styler.SetLevel(lineCurrent, lev); + } + } + + if (styler.IsLeadByte(ch)) { + chNext = styler.SafeGetCharAt(i + 2); + chPrev = ' '; + i += 1; + continue; + } + + if (state == SCE_C_DEFAULT) { + if (iswordstart(ch)) { + styler.ColourTo(i - 1, state); + state = SCE_C_WORD; + } else if (ch == '/' && chNext == '*') { + styler.ColourTo(i - 1, state); + state = SCE_C_COMMENT; + } else if (ch == '-' && chNext == '-') { + styler.ColourTo(i - 1, state); + state = SCE_C_COMMENTLINE; + } else if (ch == '\'') { + styler.ColourTo(i - 1, state); + state = SCE_C_STRING; + } else if (isoperator(ch)) { + styler.ColourTo(i - 1, state); + styler.ColourTo(i, SCE_C_OPERATOR); + } + } else if (state == SCE_C_WORD) { + if (!iswordchar(ch)) { + classifyWordSQL(styler.GetStartSegment(), i - 1, keywords, styler); + state = SCE_C_DEFAULT; + if (ch == '/' && chNext == '*') { + state = SCE_C_COMMENT; + } else if (ch == '-' && chNext == '-') { + state = SCE_C_COMMENTLINE; + } else if (ch == '\'') { + state = SCE_C_STRING; + } else if (isoperator(ch)) { + styler.ColourTo(i, SCE_C_OPERATOR); + } + } + } else { + if (state == SCE_C_COMMENT) { + if (ch == '/' && chPrev == '*') { + if (((i > (styler.GetStartSegment() + 2)) || ((initStyle == SCE_C_COMMENT) && + (styler.GetStartSegment() == startPos)))) { + state = SCE_C_DEFAULT; + styler.ColourTo(i, state); + } + } + } else if (state == SCE_C_COMMENTLINE) { + if (ch == '\r' || ch == '\n') { + styler.ColourTo(i - 1, state); + state = SCE_C_DEFAULT; + } + } else if (state == SCE_C_STRING) { + if (ch == '\'') { + if ( chNext == '\'' ) { + i++; + } else { + styler.ColourTo(i, state); + state = SCE_C_DEFAULT; + i++; + } + ch = chNext; + chNext = styler.SafeGetCharAt(i + 1); + } + } + if (state == SCE_C_DEFAULT) { // One of the above succeeded + if (ch == '/' && chNext == '*') { + state = SCE_C_COMMENT; + } else if (ch == '-' && chNext == '-') { + state = SCE_C_COMMENTLINE; + } else if (ch == '\'') { + state = SCE_C_STRING; + } else if (iswordstart(ch)) { + state = SCE_C_WORD; + } else if (isoperator(ch)) { + styler.ColourTo(i, SCE_C_OPERATOR); + } + } + } + chPrev = ch; + } + styler.ColourTo(lengthDoc - 1, state); +} + +static LexerModule lmSQL(SCLEX_SQL, ColouriseSQLDoc); |