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notepad-plus-plus/lexilla/lexers/LexMSSQL.cxx
Christian Grasser ad79718fc8 Update to scintilla 5.5.2 & Lexilla 5.4.0 
Release 5.5.2 ( https://www.scintilla.org/scintilla552.zip )

    Released 21 August 2024.
    Add SCI_SETCOPYSEPARATOR for separator between parts of a multiple selection when copied to the clipboard. Feature #1530.
    Add SCI_GETUNDOSEQUENCE to determine whether an undo sequence is active and its nesting depth.
    Add SCI_STYLESETSTRETCH to support condensed and expanded text styles.
    Add SCI_LINEINDENT and SCI_LINEDEDENT. Feature #1524.
    Fix bug on Cocoa where double-click stopped working when system had been running for a long time.
    On Cocoa implement more values of font weight and stretch.

Release 5.4.0 ( https://www.scintilla.org/lexilla540.zip )

    Released 21 August 2024.
    Inside Lexilla, LexerModule instances are now const. This will require changes to applications that modify Lexilla.cxx, which may be done to add custom lexers.
    Lexer added for TOML "toml".
    Bash: Handle backslash in heredoc delimiter. Issue #257.
    Progress: Fix lexing of nested comments. Pull request #258.
    Force lower-casing of case-insensitive keyword lists so keywords match in some lexers. Issue #259.

Close #15564
2024-08-23 02:59:58 +02:00

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// Scintilla source code edit control
/** @file LexMSSQL.cxx
** Lexer for MSSQL.
**/
// By Filip Yaghob <fyaghob@gmail.com>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <string>
#include <string_view>
#include "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"
#include "WordList.h"
#include "LexAccessor.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "CharacterSet.h"
#include "LexerModule.h"
using namespace Lexilla;
#define KW_MSSQL_STATEMENTS 0
#define KW_MSSQL_DATA_TYPES 1
#define KW_MSSQL_SYSTEM_TABLES 2
#define KW_MSSQL_GLOBAL_VARIABLES 3
#define KW_MSSQL_FUNCTIONS 4
#define KW_MSSQL_STORED_PROCEDURES 5
#define KW_MSSQL_OPERATORS 6
static char classifyWordSQL(Sci_PositionU start,
Sci_PositionU end,
WordList *keywordlists[],
Accessor &styler,
unsigned int actualState,
unsigned int prevState) {
char s[256];
bool wordIsNumber = isdigit(styler[start]) || (styler[start] == '.');
WordList &kwStatements = *keywordlists[KW_MSSQL_STATEMENTS];
WordList &kwDataTypes = *keywordlists[KW_MSSQL_DATA_TYPES];
WordList &kwSystemTables = *keywordlists[KW_MSSQL_SYSTEM_TABLES];
WordList &kwGlobalVariables = *keywordlists[KW_MSSQL_GLOBAL_VARIABLES];
WordList &kwFunctions = *keywordlists[KW_MSSQL_FUNCTIONS];
WordList &kwStoredProcedures = *keywordlists[KW_MSSQL_STORED_PROCEDURES];
WordList &kwOperators = *keywordlists[KW_MSSQL_OPERATORS];
for (Sci_PositionU i = 0; i < end - start + 1 && i < 128; i++) {
s[i] = static_cast<char>(tolower(styler[start + i]));
s[i + 1] = '\0';
}
char chAttr = SCE_MSSQL_IDENTIFIER;
if (actualState == SCE_MSSQL_GLOBAL_VARIABLE) {
if (kwGlobalVariables.InList(&s[2]))
chAttr = SCE_MSSQL_GLOBAL_VARIABLE;
} else if (wordIsNumber) {
chAttr = SCE_MSSQL_NUMBER;
} else if (prevState == SCE_MSSQL_DEFAULT_PREF_DATATYPE) {
// Look first in datatypes
if (kwDataTypes.InList(s))
chAttr = SCE_MSSQL_DATATYPE;
else if (kwOperators.InList(s))
chAttr = SCE_MSSQL_OPERATOR;
else if (kwStatements.InList(s))
chAttr = SCE_MSSQL_STATEMENT;
else if (kwSystemTables.InList(s))
chAttr = SCE_MSSQL_SYSTABLE;
else if (kwFunctions.InList(s))
chAttr = SCE_MSSQL_FUNCTION;
else if (kwStoredProcedures.InList(s))
chAttr = SCE_MSSQL_STORED_PROCEDURE;
} else {
if (kwOperators.InList(s))
chAttr = SCE_MSSQL_OPERATOR;
else if (kwStatements.InList(s))
chAttr = SCE_MSSQL_STATEMENT;
else if (kwSystemTables.InList(s))
chAttr = SCE_MSSQL_SYSTABLE;
else if (kwFunctions.InList(s))
chAttr = SCE_MSSQL_FUNCTION;
else if (kwStoredProcedures.InList(s))
chAttr = SCE_MSSQL_STORED_PROCEDURE;
else if (kwDataTypes.InList(s))
chAttr = SCE_MSSQL_DATATYPE;
}
styler.ColourTo(end, chAttr);
return chAttr;
}
static void ColouriseMSSQLDoc(Sci_PositionU startPos, Sci_Position length,
int initStyle, WordList *keywordlists[], Accessor &styler) {
styler.StartAt(startPos);
bool fold = styler.GetPropertyInt("fold") != 0;
Sci_Position lineCurrent = styler.GetLine(startPos);
int spaceFlags = 0;
int state = initStyle;
int prevState = initStyle;
char chPrev = ' ';
char chNext = styler[startPos];
int nesting = 0;
if (lineCurrent >= 1) {
nesting = styler.GetLineState(lineCurrent - 1);
}
styler.StartSegment(startPos);
Sci_PositionU lengthDoc = startPos + length;
for (Sci_PositionU i = startPos; i < lengthDoc; i++) {
const Sci_Position lineStartNext = styler.LineStart(lineCurrent + 1);
const bool atEOL = (static_cast<Sci_Position>(i) == (lineStartNext - 1));
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
if ((ch == '\r' && chNext != '\n') || (ch == '\n')) {
int 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;
}
// When the last char isn't part of the state (have to deal with it too)...
if ( (state == SCE_MSSQL_IDENTIFIER) ||
(state == SCE_MSSQL_STORED_PROCEDURE) ||
(state == SCE_MSSQL_DATATYPE) ||
//~ (state == SCE_MSSQL_COLUMN_NAME) ||
(state == SCE_MSSQL_FUNCTION) ||
//~ (state == SCE_MSSQL_GLOBAL_VARIABLE) ||
(state == SCE_MSSQL_VARIABLE)) {
if (!iswordchar(ch)) {
int stateTmp;
if ((state == SCE_MSSQL_VARIABLE) || (state == SCE_MSSQL_COLUMN_NAME)) {
styler.ColourTo(i - 1, state);
stateTmp = state;
} else
stateTmp = classifyWordSQL(styler.GetStartSegment(), i - 1, keywordlists, styler, state, prevState);
prevState = state;
if (stateTmp == SCE_MSSQL_IDENTIFIER || stateTmp == SCE_MSSQL_VARIABLE)
state = SCE_MSSQL_DEFAULT_PREF_DATATYPE;
else
state = SCE_MSSQL_DEFAULT;
}
} else if (state == SCE_MSSQL_LINE_COMMENT) {
if (ch == '\r' || ch == '\n') {
styler.ColourTo(i - 1, state);
prevState = state;
state = SCE_MSSQL_DEFAULT;
}
} else if (state == SCE_MSSQL_GLOBAL_VARIABLE) {
if ((ch != '@') && !iswordchar(ch)) {
classifyWordSQL(styler.GetStartSegment(), i - 1, keywordlists, styler, state, prevState);
prevState = state;
state = SCE_MSSQL_DEFAULT;
}
}
// If is the default or one of the above succeeded
if (state == SCE_MSSQL_DEFAULT || state == SCE_MSSQL_DEFAULT_PREF_DATATYPE) {
if (iswordstart(ch)) {
styler.ColourTo(i - 1, state);
prevState = state;
state = SCE_MSSQL_IDENTIFIER;
} else if (ch == '/' && chNext == '*') {
styler.ColourTo(i - 1, SCE_MSSQL_DEFAULT);
prevState = state;
state = SCE_MSSQL_COMMENT;
} else if (ch == '-' && chNext == '-') {
styler.ColourTo(i - 1, state);
prevState = state;
state = SCE_MSSQL_LINE_COMMENT;
} else if (ch == '\'') {
styler.ColourTo(i - 1, SCE_MSSQL_DEFAULT);
prevState = state;
state = SCE_MSSQL_STRING;
} else if (ch == '"') {
styler.ColourTo(i - 1, SCE_MSSQL_DEFAULT);
prevState = state;
state = SCE_MSSQL_COLUMN_NAME;
} else if (ch == '[') {
styler.ColourTo(i - 1, SCE_MSSQL_DEFAULT);
prevState = state;
state = SCE_MSSQL_COLUMN_NAME_2;
} else if (isoperator(ch)) {
styler.ColourTo(i - 1, state);
styler.ColourTo(i, SCE_MSSQL_OPERATOR);
//~ style = SCE_MSSQL_DEFAULT;
prevState = state;
state = SCE_MSSQL_DEFAULT;
} else if (ch == '@') {
styler.ColourTo(i - 1, SCE_MSSQL_DEFAULT);
prevState = state;
if (chNext == '@') {
state = SCE_MSSQL_GLOBAL_VARIABLE;
// i += 2;
} else
state = SCE_MSSQL_VARIABLE;
}
// When the last char is part of the state...
} else if (state == SCE_MSSQL_COMMENT) {
if (ch == '/' && chNext == '*')
nesting++;
else if (ch == '/' && chPrev == '*') {
if (nesting > 0)
nesting--;
else if (((i > (styler.GetStartSegment() + 2)) || ((initStyle == SCE_MSSQL_COMMENT) &&
(styler.GetStartSegment() == startPos)))) {
styler.ColourTo(i, state);
//~ state = SCE_MSSQL_COMMENT;
prevState = state;
state = SCE_MSSQL_DEFAULT;
}
}
} else if (state == SCE_MSSQL_STRING) {
if (ch == '\'') {
if ( chNext == '\'' ) {
i++;
ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
} else {
styler.ColourTo(i, state);
prevState = state;
state = SCE_MSSQL_DEFAULT;
//i++;
}
//ch = chNext;
//chNext = styler.SafeGetCharAt(i + 1);
}
} else if (state == SCE_MSSQL_COLUMN_NAME) {
if (ch == '"') {
if (chNext == '"') {
i++;
ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
} else {
styler.ColourTo(i, state);
prevState = state;
state = SCE_MSSQL_DEFAULT_PREF_DATATYPE;
//i++;
}
}
} else if (state == SCE_MSSQL_COLUMN_NAME_2) {
if (ch == ']') {
styler.ColourTo(i, state);
prevState = state;
state = SCE_MSSQL_DEFAULT_PREF_DATATYPE;
//i++;
}
}
if (atEOL)
styler.SetLineState(lineCurrent++, (state == SCE_MSSQL_COMMENT) ? nesting : 0);
chPrev = ch;
}
styler.ColourTo(lengthDoc - 1, state);
}
static void FoldMSSQLDoc(Sci_PositionU startPos, Sci_Position length, int, WordList *[], Accessor &styler) {
bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
Sci_PositionU endPos = startPos + length;
int visibleChars = 0;
Sci_Position lineCurrent = styler.GetLine(startPos);
int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
int levelCurrent = levelPrev;
char chNext = styler[startPos];
bool inComment = (styler.StyleAt(startPos-1) == SCE_MSSQL_COMMENT);
char s[10] = "";
for (Sci_PositionU i = startPos; i < endPos; i++) {
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
int style = styler.StyleAt(i);
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
// Comment folding
if (foldComment) {
if (!inComment && (style == SCE_MSSQL_COMMENT))
levelCurrent++;
else if (inComment && (style != SCE_MSSQL_COMMENT))
levelCurrent--;
inComment = (style == SCE_MSSQL_COMMENT);
}
if (style == SCE_MSSQL_STATEMENT) {
// Folding between begin or case and end
if (ch == 'b' || ch == 'B' || ch == 'c' || ch == 'C' || ch == 'e' || ch == 'E') {
for (Sci_PositionU j = 0; j < 5; j++) {
if (!iswordchar(styler[i + j])) {
break;
}
s[j] = static_cast<char>(tolower(styler[i + j]));
s[j + 1] = '\0';
}
if ((strcmp(s, "begin") == 0) || (strcmp(s, "case") == 0)) {
levelCurrent++;
}
if (strcmp(s, "end") == 0) {
levelCurrent--;
}
}
}
if (atEOL) {
int lev = levelPrev;
if (visibleChars == 0 && foldCompact)
lev |= SC_FOLDLEVELWHITEFLAG;
if ((levelCurrent > levelPrev) && (visibleChars > 0))
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
lineCurrent++;
levelPrev = levelCurrent;
visibleChars = 0;
}
if (!isspacechar(ch))
visibleChars++;
}
// Fill in the real level of the next line, keeping the current flags as they will be filled in later
int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}
static const char * const sqlWordListDesc[] = {
"Statements",
"Data Types",
"System tables",
"Global variables",
"Functions",
"System Stored Procedures",
"Operators",
0,
};
extern const LexerModule lmMSSQL(SCLEX_MSSQL, ColouriseMSSQLDoc, "mssql", FoldMSSQLDoc, sqlWordListDesc);
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