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// 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);
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