stjr
/
ZoneBuilder
mirror of https://git.do.srb2.org/STJr/ZoneBuilder.git
0
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
ZoneBuilder/Documents/Scintilla/LexMySQL.cxx

368 lines
11 KiB
C++
Raw Blame History

// Scintilla source code edit control
/** @file LexMySQL.cxx
** Lexer for MySQL
**/
// Adopted from LexSQL.cxx by Anders Karlsson <anders@mysql.com>
// Original work by Neil Hodgson <neilh@scintilla.org>
// Copyright 1998-2005 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 IsAWordChar(int ch) {
return (ch < 0x80) && (isalnum(ch) || ch == '_');
}
static inline bool IsAWordStart(int ch) {
return (ch < 0x80) && (isalpha(ch) || ch == '_');
}
static inline bool IsADoxygenChar(int ch) {
return (islower(ch) || ch == '$' || ch == '@' ||
ch == '\\' || ch == '&' || ch == '<' ||
ch == '>' || ch == '#' || ch == '{' ||
ch == '}' || ch == '[' || ch == ']');
}
static inline bool IsANumberChar(int ch) {
// Not exactly following number definition (several dots are seen as OK, etc.)
// but probably enough in most cases.
return (ch < 0x80) &&
(isdigit(ch) || toupper(ch) == 'E' ||
ch == '.' || ch == '-' || ch == '+');
}
static void ColouriseMySQLDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
Accessor &styler) {
WordList &major_keywords = *keywordlists[0];
WordList &keywords = *keywordlists[1];
WordList &database_objects = *keywordlists[2];
WordList &functions = *keywordlists[3];
WordList &system_variables = *keywordlists[4];
WordList &procedure_keywords = *keywordlists[5];
WordList &kw_user1 = *keywordlists[6];
WordList &kw_user2 = *keywordlists[7];
WordList &kw_user3 = *keywordlists[8];
StyleContext sc(startPos, length, initStyle, styler);
for (; sc.More(); sc.Forward()) {
// Determine if the current state should terminate.
switch (sc.state) {
case SCE_MYSQL_OPERATOR:
sc.SetState(SCE_MYSQL_DEFAULT);
break;
case SCE_MYSQL_NUMBER:
// We stop the number definition on non-numerical non-dot non-eE non-sign char
if (!IsANumberChar(sc.ch)) {
sc.SetState(SCE_MYSQL_DEFAULT);
}
break;
case SCE_MYSQL_IDENTIFIER:
if (!IsAWordChar(sc.ch)) {
int nextState = SCE_MYSQL_DEFAULT;
char s[1000];
sc.GetCurrentLowered(s, sizeof(s));
if (major_keywords.InList(s)) {
sc.ChangeState(SCE_MYSQL_MAJORKEYWORD);
} else if (keywords.InList(s)) {
sc.ChangeState(SCE_MYSQL_KEYWORD);
} else if (database_objects.InList(s)) {
sc.ChangeState(SCE_MYSQL_DATABASEOBJECT);
} else if (functions.InList(s)) {
sc.ChangeState(SCE_MYSQL_FUNCTION);
} else if (procedure_keywords.InList(s)) {
sc.ChangeState(SCE_MYSQL_PROCEDUREKEYWORD);
} else if (kw_user1.InList(s)) {
sc.ChangeState(SCE_MYSQL_USER1);
} else if (kw_user2.InList(s)) {
sc.ChangeState(SCE_MYSQL_USER2);
} else if (kw_user3.InList(s)) {
sc.ChangeState(SCE_MYSQL_USER3);
}
sc.SetState(nextState);
}
break;
case SCE_MYSQL_VARIABLE:
if (!IsAWordChar(sc.ch)) {
sc.SetState(SCE_MYSQL_DEFAULT);
}
break;
case SCE_MYSQL_SYSTEMVARIABLE:
if (!IsAWordChar(sc.ch)) {
char s[1000];
sc.GetCurrentLowered(s, sizeof(s));
// Check for known system variables here.
if (system_variables.InList(&s[2])) {
sc.ChangeState(SCE_MYSQL_KNOWNSYSTEMVARIABLE);
}
sc.SetState(SCE_MYSQL_DEFAULT);
}
break;
case SCE_MYSQL_QUOTEDIDENTIFIER:
if (sc.ch == 0x60) {
if (sc.chNext == 0x60) {
sc.Forward(); // Ignore it
} else {
sc.ForwardSetState(SCE_MYSQL_DEFAULT);
}
}
break;
case SCE_MYSQL_COMMENT:
if (sc.Match('*', '/')) {
sc.Forward();
sc.ForwardSetState(SCE_MYSQL_DEFAULT);
}
break;
case SCE_MYSQL_COMMENTLINE:
if (sc.atLineStart) {
sc.SetState(SCE_MYSQL_DEFAULT);
}
break;
case SCE_MYSQL_SQSTRING:
if (sc.ch == '\\') {
// Escape sequence
sc.Forward();
} else if (sc.ch == '\'') {
if (sc.chNext == '\'') {
sc.Forward();
} else {
sc.ChangeState(SCE_MYSQL_STRING);
sc.ForwardSetState(SCE_MYSQL_DEFAULT);
}
}
break;
case SCE_MYSQL_DQSTRING:
if (sc.ch == '\\') {
// Escape sequence
sc.Forward();
} else if (sc.ch == '\"') {
if (sc.chNext == '\"') {
sc.Forward();
} else {
sc.ChangeState(SCE_MYSQL_STRING);
sc.ForwardSetState(SCE_MYSQL_DEFAULT);
}
}
break;
}
// Determine if a new state should be entered.
if (sc.state == SCE_MYSQL_DEFAULT) {
if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
sc.SetState(SCE_MYSQL_NUMBER);
} else if (IsAWordStart(sc.ch)) {
sc.SetState(SCE_MYSQL_IDENTIFIER);
// Note that the order of SYSTEMVARIABLE and VARIABLE is important here.
} else if (sc.ch == 0x40 && sc.chNext == 0x40) {
sc.SetState(SCE_MYSQL_SYSTEMVARIABLE);
sc.Forward(); // Skip past the second at-sign.
} else if (sc.ch == 0x40) {
sc.SetState(SCE_MYSQL_VARIABLE);
} else if (sc.ch == 0x60) {
sc.SetState(SCE_MYSQL_QUOTEDIDENTIFIER);
} else if (sc.Match('/', '*')) {
sc.SetState(SCE_MYSQL_COMMENT);
sc.Forward(); // Eat the * so it isn't used for the end of the comment
} else if (sc.Match('-', '-') || sc.Match('#')) {
sc.SetState(SCE_MYSQL_COMMENTLINE);
} else if (sc.ch == '\'') {
sc.SetState(SCE_MYSQL_SQSTRING);
} else if (sc.ch == '\"') {
sc.SetState(SCE_MYSQL_DQSTRING);
} else if (isoperator(static_cast<char>(sc.ch))) {
sc.SetState(SCE_MYSQL_OPERATOR);
}
}
}
sc.Complete();
}
static bool IsStreamCommentStyle(int style) {
return style == SCE_MYSQL_COMMENT;
}
// Store both the current line's fold level and the next lines in the
// level store to make it easy to pick up with each increment.
static void FoldMySQLDoc(unsigned int startPos, int length, int initStyle,
WordList *[], Accessor &styler) {
bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
bool foldOnlyBegin = styler.GetPropertyInt("fold.sql.only.begin", 0) != 0;
unsigned int endPos = startPos + length;
int visibleChars = 0;
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];
int styleNext = styler.StyleAt(startPos);
int style = initStyle;
bool endFound = false;
bool whenFound = false;
bool elseFound = false;
for (unsigned int i = startPos; i < endPos; i++) {
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
int stylePrev = style;
style = styleNext;
styleNext = styler.StyleAt(i + 1);
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
if (foldComment && IsStreamCommentStyle(style)) {
if (!IsStreamCommentStyle(stylePrev)) {
levelNext++;
} else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
// Comments don't end at end of line and the next character may be unstyled.
levelNext--;
}
}
if (foldComment && (style == SCE_MYSQL_COMMENTLINE)) {
// MySQL needs -- comments to be followed by space or control char
if ((ch == '-') && (chNext == '-')) {
char chNext2 = styler.SafeGetCharAt(i + 2);
char chNext3 = styler.SafeGetCharAt(i + 3);
if (chNext2 == '{' || chNext3 == '{') {
levelNext++;
} else if (chNext2 == '}' || chNext3 == '}') {
levelNext--;
}
}
}
if (style == SCE_MYSQL_OPERATOR) {
if (ch == '(') {
levelNext++;
} else if (ch == ')') {
levelNext--;
}
}
// Style new keywords here.
if ((style == SCE_MYSQL_MAJORKEYWORD && stylePrev != SCE_MYSQL_MAJORKEYWORD)
|| (style == SCE_MYSQL_KEYWORD && stylePrev != SCE_MYSQL_KEYWORD)
|| (style == SCE_MYSQL_PROCEDUREKEYWORD && stylePrev != SCE_MYSQL_PROCEDUREKEYWORD)) {
const int MAX_KW_LEN = 6; // Maximum length of folding keywords
char s[MAX_KW_LEN + 2];
unsigned int j = 0;
for (; j < MAX_KW_LEN + 1; j++) {
if (!iswordchar(styler[i + j])) {
break;
}
s[j] = static_cast<char>(tolower(styler[i + j]));
}
if (j == MAX_KW_LEN + 1) {
// Keyword too long, don't test it
s[0] = '\0';
} else {
s[j] = '\0';
}
if (!foldOnlyBegin && endFound && (strcmp(s, "if") == 0 || strcmp(s, "while") == 0 || strcmp(s, "loop") == 0)) {
endFound = false;
levelNext--;
if (levelNext < SC_FOLDLEVELBASE) {
levelNext = SC_FOLDLEVELBASE;
}
// Note that else is special here. It may or may be followed by an if then, but in aly case the level stays the
// same. When followed by a if .. then, the level will be increased later, if not, at eol.
} else if (!foldOnlyBegin && strcmp(s, "else") == 0) {
levelNext--;
elseFound = true;
} else if (!foldOnlyBegin && strcmp(s, "then") == 0) {
if(whenFound) {
whenFound = false;
} else {
levelNext++;
}
} else if (strcmp(s, "if") == 0) {
elseFound = false;
} else if (strcmp(s, "when") == 0) {
whenFound = true;
} else if (strcmp(s, "begin") == 0) {
levelNext++;
} else if (!foldOnlyBegin && (strcmp(s, "loop") == 0 || strcmp(s, "repeat") == 0
|| strcmp(s, "while") == 0)) {
if(endFound) {
endFound = false;
} else {
levelNext++;
}
} else if (strcmp(s, "end") == 0) {
// Multiple END in a row are counted multiple times!
if (endFound) {
levelNext--;
if (levelNext < SC_FOLDLEVELBASE) {
levelNext = SC_FOLDLEVELBASE;
}
}
endFound = true;
whenFound = false;
}
}
// Handle this for a trailing end withiut an if / while etc, as in the case of a begin.
if (endFound) {
endFound = false;
levelNext--;
if (levelNext < SC_FOLDLEVELBASE) {
levelNext = SC_FOLDLEVELBASE;
}
}
if (atEOL) {
if(elseFound)
levelNext++;
elseFound = false;
int levelUse = levelCurrent;
int lev = levelUse | levelNext << 16;
if (visibleChars == 0 && foldCompact)
lev |= SC_FOLDLEVELWHITEFLAG;
if (levelUse < levelNext)
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
lineCurrent++;
levelCurrent = levelNext;
visibleChars = 0;
endFound = false;
whenFound = false;
}
if (!isspacechar(ch)) {
visibleChars++;
}
}
}
static const char * const mysqlWordListDesc[] = {
"Major Keywords",
"Keywords",
"Database Objects",
"Functions",
"System Variables",
"Procedure keywords",
"User Keywords 1",
"User Keywords 2",
"User Keywords 3"
};
LexerModule lmMySQL(SCLEX_MYSQL, ColouriseMySQLDoc, "mysql", FoldMySQLDoc, mysqlWordListDesc);
Reference in New Issue View Git Blame Copy Permalink