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bgfx/3rdparty/scintilla/lexers/LexSQL.cxx
Branimir Karadžić a510b8f347 Added Scintilla imgui.
2015-06-08 17:07:35 -07:00

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//-*- coding: utf-8 -*-
// Scintilla source code edit control
/** @file LexSQL.cxx
** Lexer for SQL, including PL/SQL and SQL*Plus.
** Improved by Jérôme LAFORGE <jerome.laforge_AT_gmail_DOT_com> from 2010 to 2012.
**/
// Copyright 1998-2012 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 <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#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"
#include "OptionSet.h"
#include "SparseState.h"
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
static inline bool IsAWordChar(int ch, bool sqlAllowDottedWord) {
if (!sqlAllowDottedWord)
return (ch < 0x80) && (isalnum(ch) || ch == '_');
else
return (ch < 0x80) && (isalnum(ch) || 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, int chPrev) {
// 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 == '+') && chPrev < 0x80 && toupper(chPrev) == 'E'));
}
typedef unsigned int sql_state_t;
class SQLStates {
public :
void Set(int lineNumber, unsigned short int sqlStatesLine) {
sqlStatement.Set(lineNumber, sqlStatesLine);
}
sql_state_t IgnoreWhen (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_IGNORE_WHEN;
else
sqlStatesLine &= ~MASK_IGNORE_WHEN;
return sqlStatesLine;
}
sql_state_t IntoCondition (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_INTO_CONDITION;
else
sqlStatesLine &= ~MASK_INTO_CONDITION;
return sqlStatesLine;
}
sql_state_t IntoExceptionBlock (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_INTO_EXCEPTION;
else
sqlStatesLine &= ~MASK_INTO_EXCEPTION;
return sqlStatesLine;
}
sql_state_t IntoDeclareBlock (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_INTO_DECLARE;
else
sqlStatesLine &= ~MASK_INTO_DECLARE;
return sqlStatesLine;
}
sql_state_t IntoMergeStatement (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_MERGE_STATEMENT;
else
sqlStatesLine &= ~MASK_MERGE_STATEMENT;
return sqlStatesLine;
}
sql_state_t CaseMergeWithoutWhenFound (sql_state_t sqlStatesLine, bool found) {
if (found)
sqlStatesLine |= MASK_CASE_MERGE_WITHOUT_WHEN_FOUND;
else
sqlStatesLine &= ~MASK_CASE_MERGE_WITHOUT_WHEN_FOUND;
return sqlStatesLine;
}
sql_state_t IntoSelectStatementOrAssignment (sql_state_t sqlStatesLine, bool found) {
if (found)
sqlStatesLine |= MASK_INTO_SELECT_STATEMENT_OR_ASSIGNEMENT;
else
sqlStatesLine &= ~MASK_INTO_SELECT_STATEMENT_OR_ASSIGNEMENT;
return sqlStatesLine;
}
sql_state_t BeginCaseBlock (sql_state_t sqlStatesLine) {
if ((sqlStatesLine & MASK_NESTED_CASES) < MASK_NESTED_CASES) {
sqlStatesLine++;
}
return sqlStatesLine;
}
sql_state_t EndCaseBlock (sql_state_t sqlStatesLine) {
if ((sqlStatesLine & MASK_NESTED_CASES) > 0) {
sqlStatesLine--;
}
return sqlStatesLine;
}
sql_state_t IntoCreateStatement (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_INTO_CREATE;
else
sqlStatesLine &= ~MASK_INTO_CREATE;
return sqlStatesLine;
}
sql_state_t IntoCreateViewStatement (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_INTO_CREATE_VIEW;
else
sqlStatesLine &= ~MASK_INTO_CREATE_VIEW;
return sqlStatesLine;
}
sql_state_t IntoCreateViewAsStatement (sql_state_t sqlStatesLine, bool enable) {
if (enable)
sqlStatesLine |= MASK_INTO_CREATE_VIEW_AS_STATEMENT;
else
sqlStatesLine &= ~MASK_INTO_CREATE_VIEW_AS_STATEMENT;
return sqlStatesLine;
}
bool IsIgnoreWhen (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_IGNORE_WHEN) != 0;
}
bool IsIntoCondition (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_INTO_CONDITION) != 0;
}
bool IsIntoCaseBlock (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_NESTED_CASES) != 0;
}
bool IsIntoExceptionBlock (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_INTO_EXCEPTION) != 0;
}
bool IsIntoSelectStatementOrAssignment (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_INTO_SELECT_STATEMENT_OR_ASSIGNEMENT) != 0;
}
bool IsCaseMergeWithoutWhenFound (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_CASE_MERGE_WITHOUT_WHEN_FOUND) != 0;
}
bool IsIntoDeclareBlock (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_INTO_DECLARE) != 0;
}
bool IsIntoMergeStatement (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_MERGE_STATEMENT) != 0;
}
bool IsIntoCreateStatement (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_INTO_CREATE) != 0;
}
bool IsIntoCreateViewStatement (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_INTO_CREATE_VIEW) != 0;
}
bool IsIntoCreateViewAsStatement (sql_state_t sqlStatesLine) {
return (sqlStatesLine & MASK_INTO_CREATE_VIEW_AS_STATEMENT) != 0;
}
sql_state_t ForLine(int lineNumber) {
return sqlStatement.ValueAt(lineNumber);
}
SQLStates() {}
private :
SparseState <sql_state_t> sqlStatement;
enum {
MASK_NESTED_CASES = 0x0001FF,
MASK_INTO_SELECT_STATEMENT_OR_ASSIGNEMENT = 0x000200,
MASK_CASE_MERGE_WITHOUT_WHEN_FOUND = 0x000400,
MASK_MERGE_STATEMENT = 0x000800,
MASK_INTO_DECLARE = 0x001000,
MASK_INTO_EXCEPTION = 0x002000,
MASK_INTO_CONDITION = 0x004000,
MASK_IGNORE_WHEN = 0x008000,
MASK_INTO_CREATE = 0x010000,
MASK_INTO_CREATE_VIEW = 0x020000,
MASK_INTO_CREATE_VIEW_AS_STATEMENT = 0x040000
};
};
// Options used for LexerSQL
struct OptionsSQL {
bool fold;
bool foldAtElse;
bool foldComment;
bool foldCompact;
bool foldOnlyBegin;
bool sqlBackticksIdentifier;
bool sqlNumbersignComment;
bool sqlBackslashEscapes;
bool sqlAllowDottedWord;
OptionsSQL() {
fold = false;
foldAtElse = false;
foldComment = false;
foldCompact = false;
foldOnlyBegin = false;
sqlBackticksIdentifier = false;
sqlNumbersignComment = false;
sqlBackslashEscapes = false;
sqlAllowDottedWord = false;
}
};
static const char * const sqlWordListDesc[] = {
"Keywords",
"Database Objects",
"PLDoc",
"SQL*Plus",
"User Keywords 1",
"User Keywords 2",
"User Keywords 3",
"User Keywords 4",
0
};
struct OptionSetSQL : public OptionSet<OptionsSQL> {
OptionSetSQL() {
DefineProperty("fold", &OptionsSQL::fold);
DefineProperty("fold.sql.at.else", &OptionsSQL::foldAtElse,
"This option enables SQL folding on a \"ELSE\" and \"ELSIF\" line of an IF statement.");
DefineProperty("fold.comment", &OptionsSQL::foldComment);
DefineProperty("fold.compact", &OptionsSQL::foldCompact);
DefineProperty("fold.sql.only.begin", &OptionsSQL::foldOnlyBegin);
DefineProperty("lexer.sql.backticks.identifier", &OptionsSQL::sqlBackticksIdentifier);
DefineProperty("lexer.sql.numbersign.comment", &OptionsSQL::sqlNumbersignComment,
"If \"lexer.sql.numbersign.comment\" property is set to 0 a line beginning with '#' will not be a comment.");
DefineProperty("sql.backslash.escapes", &OptionsSQL::sqlBackslashEscapes,
"Enables backslash as an escape character in SQL.");
DefineProperty("lexer.sql.allow.dotted.word", &OptionsSQL::sqlAllowDottedWord,
"Set to 1 to colourise recognized words with dots "
"(recommended for Oracle PL/SQL objects).");
DefineWordListSets(sqlWordListDesc);
}
};
class LexerSQL : public ILexer {
public :
LexerSQL() {}
virtual ~LexerSQL() {}
int SCI_METHOD Version () const {
return lvOriginal;
}
void SCI_METHOD Release() {
delete this;
}
const char * SCI_METHOD PropertyNames() {
return osSQL.PropertyNames();
}
int SCI_METHOD PropertyType(const char *name) {
return osSQL.PropertyType(name);
}
const char * SCI_METHOD DescribeProperty(const char *name) {
return osSQL.DescribeProperty(name);
}
int SCI_METHOD PropertySet(const char *key, const char *val) {
if (osSQL.PropertySet(&options, key, val)) {
return 0;
}
return -1;
}
const char * SCI_METHOD DescribeWordListSets() {
return osSQL.DescribeWordListSets();
}
int SCI_METHOD WordListSet(int n, const char *wl);
void SCI_METHOD Lex (unsigned int startPos, int lengthDoc, int initStyle, IDocument *pAccess);
void SCI_METHOD Fold(unsigned int startPos, int lengthDoc, int initStyle, IDocument *pAccess);
void * SCI_METHOD PrivateCall(int, void *) {
return 0;
}
static ILexer *LexerFactorySQL() {
return new LexerSQL();
}
private:
bool IsStreamCommentStyle(int style) {
return style == SCE_SQL_COMMENT ||
style == SCE_SQL_COMMENTDOC ||
style == SCE_SQL_COMMENTDOCKEYWORD ||
style == SCE_SQL_COMMENTDOCKEYWORDERROR;
}
bool IsCommentStyle (int style) {
switch (style) {
case SCE_SQL_COMMENT :
case SCE_SQL_COMMENTDOC :
case SCE_SQL_COMMENTLINE :
case SCE_SQL_COMMENTLINEDOC :
case SCE_SQL_COMMENTDOCKEYWORD :
case SCE_SQL_COMMENTDOCKEYWORDERROR :
return true;
default :
return false;
}
}
bool IsCommentLine (int line, LexAccessor &styler) {
int pos = styler.LineStart(line);
int eol_pos = styler.LineStart(line + 1) - 1;
for (int i = pos; i + 1 < eol_pos; i++) {
int style = styler.StyleAt(i);
// MySQL needs -- comments to be followed by space or control char
if (style == SCE_SQL_COMMENTLINE && styler.Match(i, "--"))
return true;
else if (!IsASpaceOrTab(styler[i]))
return false;
}
return false;
}
OptionsSQL options;
OptionSetSQL osSQL;
SQLStates sqlStates;
WordList keywords1;
WordList keywords2;
WordList kw_pldoc;
WordList kw_sqlplus;
WordList kw_user1;
WordList kw_user2;
WordList kw_user3;
WordList kw_user4;
};
int SCI_METHOD LexerSQL::WordListSet(int n, const char *wl) {
WordList *wordListN = 0;
switch (n) {
case 0:
wordListN = &keywords1;
break;
case 1:
wordListN = &keywords2;
break;
case 2:
wordListN = &kw_pldoc;
break;
case 3:
wordListN = &kw_sqlplus;
break;
case 4:
wordListN = &kw_user1;
break;
case 5:
wordListN = &kw_user2;
break;
case 6:
wordListN = &kw_user3;
break;
case 7:
wordListN = &kw_user4;
}
int firstModification = -1;
if (wordListN) {
WordList wlNew;
wlNew.Set(wl);
if (*wordListN != wlNew) {
wordListN->Set(wl);
firstModification = 0;
}
}
return firstModification;
}
void SCI_METHOD LexerSQL::Lex(unsigned int startPos, int length, int initStyle, IDocument *pAccess) {
LexAccessor styler(pAccess);
StyleContext sc(startPos, length, initStyle, styler);
int styleBeforeDCKeyword = SCE_SQL_DEFAULT;
int offset = 0;
for (; sc.More(); sc.Forward(), offset++) {
// Determine if the current state should terminate.
switch (sc.state) {
case SCE_SQL_OPERATOR:
sc.SetState(SCE_SQL_DEFAULT);
break;
case SCE_SQL_NUMBER:
// We stop the number definition on non-numerical non-dot non-eE non-sign char
if (!IsANumberChar(sc.ch, sc.chPrev)) {
sc.SetState(SCE_SQL_DEFAULT);
}
break;
case SCE_SQL_IDENTIFIER:
if (!IsAWordChar(sc.ch, options.sqlAllowDottedWord)) {
int nextState = SCE_SQL_DEFAULT;
char s[1000];
sc.GetCurrentLowered(s, sizeof(s));
if (keywords1.InList(s)) {
sc.ChangeState(SCE_SQL_WORD);
} else if (keywords2.InList(s)) {
sc.ChangeState(SCE_SQL_WORD2);
} else if (kw_sqlplus.InListAbbreviated(s, '~')) {
sc.ChangeState(SCE_SQL_SQLPLUS);
if (strncmp(s, "rem", 3) == 0) {
nextState = SCE_SQL_SQLPLUS_COMMENT;
} else if (strncmp(s, "pro", 3) == 0) {
nextState = SCE_SQL_SQLPLUS_PROMPT;
}
} else if (kw_user1.InList(s)) {
sc.ChangeState(SCE_SQL_USER1);
} else if (kw_user2.InList(s)) {
sc.ChangeState(SCE_SQL_USER2);
} else if (kw_user3.InList(s)) {
sc.ChangeState(SCE_SQL_USER3);
} else if (kw_user4.InList(s)) {
sc.ChangeState(SCE_SQL_USER4);
}
sc.SetState(nextState);
}
break;
case SCE_SQL_QUOTEDIDENTIFIER:
if (sc.ch == 0x60) {
if (sc.chNext == 0x60) {
sc.Forward(); // Ignore it
} else {
sc.ForwardSetState(SCE_SQL_DEFAULT);
}
}
break;
case SCE_SQL_COMMENT:
if (sc.Match('*', '/')) {
sc.Forward();
sc.ForwardSetState(SCE_SQL_DEFAULT);
}
break;
case SCE_SQL_COMMENTDOC:
if (sc.Match('*', '/')) {
sc.Forward();
sc.ForwardSetState(SCE_SQL_DEFAULT);
} else if (sc.ch == '@' || sc.ch == '\\') { // Doxygen support
// Verify that we have the conditions to mark a comment-doc-keyword
if ((IsASpace(sc.chPrev) || sc.chPrev == '*') && (!IsASpace(sc.chNext))) {
styleBeforeDCKeyword = SCE_SQL_COMMENTDOC;
sc.SetState(SCE_SQL_COMMENTDOCKEYWORD);
}
}
break;
case SCE_SQL_COMMENTLINE:
case SCE_SQL_COMMENTLINEDOC:
case SCE_SQL_SQLPLUS_COMMENT:
case SCE_SQL_SQLPLUS_PROMPT:
if (sc.atLineStart) {
sc.SetState(SCE_SQL_DEFAULT);
}
break;
case SCE_SQL_COMMENTDOCKEYWORD:
if ((styleBeforeDCKeyword == SCE_SQL_COMMENTDOC) && sc.Match('*', '/')) {
sc.ChangeState(SCE_SQL_COMMENTDOCKEYWORDERROR);
sc.Forward();
sc.ForwardSetState(SCE_SQL_DEFAULT);
} else if (!IsADoxygenChar(sc.ch)) {
char s[100];
sc.GetCurrentLowered(s, sizeof(s));
if (!isspace(sc.ch) || !kw_pldoc.InList(s + 1)) {
sc.ChangeState(SCE_SQL_COMMENTDOCKEYWORDERROR);
}
sc.SetState(styleBeforeDCKeyword);
}
break;
case SCE_SQL_CHARACTER:
if (options.sqlBackslashEscapes && sc.ch == '\\') {
sc.Forward();
} else if (sc.ch == '\'') {
if (sc.chNext == '\"') {
sc.Forward();
} else {
sc.ForwardSetState(SCE_SQL_DEFAULT);
}
}
break;
case SCE_SQL_STRING:
if (sc.ch == '\\') {
// Escape sequence
sc.Forward();
} else if (sc.ch == '\"') {
if (sc.chNext == '\"') {
sc.Forward();
} else {
sc.ForwardSetState(SCE_SQL_DEFAULT);
}
}
break;
case SCE_SQL_QOPERATOR:
// Locate the unique Q operator character
sc.Complete();
char qOperator = 0x00;
for (int styleStartPos = sc.currentPos; styleStartPos > 0; --styleStartPos) {
if (styler.StyleAt(styleStartPos - 1) != SCE_SQL_QOPERATOR) {
qOperator = styler.SafeGetCharAt(styleStartPos + 2);
break;
}
}
char qComplement = 0x00;
if (qOperator == '<') {
qComplement = '>';
} else if (qOperator == '(') {
qComplement = ')';
} else if (qOperator == '{') {
qComplement = '}';
} else if (qOperator == '[') {
qComplement = ']';
} else {
qComplement = qOperator;
}
if (sc.Match(qComplement, '\'')) {
sc.Forward();
sc.ForwardSetState(SCE_SQL_DEFAULT);
}
break;
}
// Determine if a new state should be entered.
if (sc.state == SCE_SQL_DEFAULT) {
if (sc.Match('q', '\'') || sc.Match('Q', '\'')) {
sc.SetState(SCE_SQL_QOPERATOR);
sc.Forward();
} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext)) ||
((sc.ch == '-' || sc.ch == '+') && IsADigit(sc.chNext) && !IsADigit(sc.chPrev))) {
sc.SetState(SCE_SQL_NUMBER);
} else if (IsAWordStart(sc.ch)) {
sc.SetState(SCE_SQL_IDENTIFIER);
} else if (sc.ch == 0x60 && options.sqlBackticksIdentifier) {
sc.SetState(SCE_SQL_QUOTEDIDENTIFIER);
} else if (sc.Match('/', '*')) {
if (sc.Match("/**") || sc.Match("/*!")) { // Support of Doxygen doc. style
sc.SetState(SCE_SQL_COMMENTDOC);
} else {
sc.SetState(SCE_SQL_COMMENT);
}
sc.Forward(); // Eat the * so it isn't used for the end of the comment
} else if (sc.Match('-', '-')) {
// MySQL requires a space or control char after --
// http://dev.mysql.com/doc/mysql/en/ansi-diff-comments.html
// Perhaps we should enforce that with proper property:
//~ } else if (sc.Match("-- ")) {
sc.SetState(SCE_SQL_COMMENTLINE);
} else if (sc.ch == '#' && options.sqlNumbersignComment) {
sc.SetState(SCE_SQL_COMMENTLINEDOC);
} else if (sc.ch == '\'') {
sc.SetState(SCE_SQL_CHARACTER);
} else if (sc.ch == '\"') {
sc.SetState(SCE_SQL_STRING);
} else if (isoperator(static_cast<char>(sc.ch))) {
sc.SetState(SCE_SQL_OPERATOR);
}
}
}
sc.Complete();
}
void SCI_METHOD LexerSQL::Fold(unsigned int startPos, int length, int initStyle, IDocument *pAccess) {
if (!options.fold)
return;
LexAccessor styler(pAccess);
unsigned int endPos = startPos + length;
int visibleChars = 0;
int lineCurrent = styler.GetLine(startPos);
int levelCurrent = SC_FOLDLEVELBASE;
if (lineCurrent > 0) {
// Backtrack to previous line in case need to fix its fold status for folding block of single-line comments (i.e. '--').
int lastNLPos = -1;
// And keep going back until we find an operator ';' followed
// by white-space and/or comments. This will improve folding.
while (--startPos > 0) {
char ch = styler[startPos];
if (ch == '\n' || (ch == '\r' && styler[startPos + 1] != '\n')) {
lastNLPos = startPos;
} else if (ch == ';' &&
styler.StyleAt(startPos) == SCE_SQL_OPERATOR) {
bool isAllClear = true;
for (int tempPos = startPos + 1;
tempPos < lastNLPos;
++tempPos) {
int tempStyle = styler.StyleAt(tempPos);
if (!IsCommentStyle(tempStyle)
&& tempStyle != SCE_SQL_DEFAULT) {
isAllClear = false;
break;
}
}
if (isAllClear) {
startPos = lastNLPos + 1;
break;
}
}
}
lineCurrent = styler.GetLine(startPos);
if (lineCurrent > 0)
levelCurrent = styler.LevelAt(lineCurrent - 1) >> 16;
}
// And because folding ends at ';', keep going until we find one
// Otherwise if create ... view ... as is split over multiple
// lines the folding won't always update immediately.
unsigned int docLength = styler.Length();
for (; endPos < docLength; ++endPos) {
if (styler.SafeGetCharAt(endPos) == ';') {
break;
}
}
int levelNext = levelCurrent;
char chNext = styler[startPos];
int styleNext = styler.StyleAt(startPos);
int style = initStyle;
bool endFound = false;
bool isUnfoldingIgnored = false;
// this statementFound flag avoids to fold when the statement is on only one line by ignoring ELSE or ELSIF
// eg. "IF condition1 THEN ... ELSIF condition2 THEN ... ELSE ... END IF;"
bool statementFound = false;
sql_state_t sqlStatesCurrentLine = 0;
if (!options.foldOnlyBegin) {
sqlStatesCurrentLine = sqlStates.ForLine(lineCurrent);
}
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 (atEOL || (!IsCommentStyle(style) && ch == ';')) {
if (endFound) {
//Maybe this is the end of "EXCEPTION" BLOCK (eg. "BEGIN ... EXCEPTION ... END;")
sqlStatesCurrentLine = sqlStates.IntoExceptionBlock(sqlStatesCurrentLine, false);
}
// set endFound and isUnfoldingIgnored to false if EOL is reached or ';' is found
endFound = false;
isUnfoldingIgnored = false;
}
if ((!IsCommentStyle(style) && ch == ';')) {
if (sqlStates.IsIntoMergeStatement(sqlStatesCurrentLine)) {
// This is the end of "MERGE" statement.
if (!sqlStates.IsCaseMergeWithoutWhenFound(sqlStatesCurrentLine))
levelNext--;
sqlStatesCurrentLine = sqlStates.IntoMergeStatement(sqlStatesCurrentLine, false);
levelNext--;
}
if (sqlStates.IsIntoSelectStatementOrAssignment(sqlStatesCurrentLine))
sqlStatesCurrentLine = sqlStates.IntoSelectStatementOrAssignment(sqlStatesCurrentLine, false);
if (sqlStates.IsIntoCreateStatement(sqlStatesCurrentLine)) {
if (sqlStates.IsIntoCreateViewStatement(sqlStatesCurrentLine)) {
if (sqlStates.IsIntoCreateViewAsStatement(sqlStatesCurrentLine)) {
levelNext--;
sqlStatesCurrentLine = sqlStates.IntoCreateViewAsStatement(sqlStatesCurrentLine, false);
}
sqlStatesCurrentLine = sqlStates.IntoCreateViewStatement(sqlStatesCurrentLine, false);
}
sqlStatesCurrentLine = sqlStates.IntoCreateStatement(sqlStatesCurrentLine, false);
}
}
if (ch == ':' && chNext == '=' && !IsCommentStyle(style))
sqlStatesCurrentLine = sqlStates.IntoSelectStatementOrAssignment(sqlStatesCurrentLine, true);
if (options.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 (options.foldComment && (style == SCE_SQL_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--;
}
}
}
// Fold block of single-line comments (i.e. '--').
if (options.foldComment && atEOL && IsCommentLine(lineCurrent, styler)) {
if (!IsCommentLine(lineCurrent - 1, styler) && IsCommentLine(lineCurrent + 1, styler))
levelNext++;
else if (IsCommentLine(lineCurrent - 1, styler) && !IsCommentLine(lineCurrent + 1, styler))
levelNext--;
}
if (style == SCE_SQL_OPERATOR) {
if (ch == '(') {
if (levelCurrent > levelNext)
levelCurrent--;
levelNext++;
} else if (ch == ')') {
levelNext--;
} else if ((!options.foldOnlyBegin) && ch == ';') {
sqlStatesCurrentLine = sqlStates.IgnoreWhen(sqlStatesCurrentLine, false);
}
}
// If new keyword (cannot trigger on elseif or nullif, does less tests)
if (style == SCE_SQL_WORD && stylePrev != SCE_SQL_WORD) {
const int MAX_KW_LEN = 9; // 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 (!options.foldOnlyBegin &&
strcmp(s, "select") == 0) {
sqlStatesCurrentLine = sqlStates.IntoSelectStatementOrAssignment(sqlStatesCurrentLine, true);
} else if (strcmp(s, "if") == 0) {
if (endFound) {
endFound = false;
if (options.foldOnlyBegin && !isUnfoldingIgnored) {
// this end isn't for begin block, but for if block ("end if;")
// so ignore previous "end" by increment levelNext.
levelNext++;
}
} else {
if (!options.foldOnlyBegin)
sqlStatesCurrentLine = sqlStates.IntoCondition(sqlStatesCurrentLine, true);
if (levelCurrent > levelNext) {
// doesn't include this line into the folding block
// because doesn't hide IF (eg "END; IF")
levelCurrent = levelNext;
}
}
} else if (!options.foldOnlyBegin &&
strcmp(s, "then") == 0 &&
sqlStates.IsIntoCondition(sqlStatesCurrentLine)) {
sqlStatesCurrentLine = sqlStates.IntoCondition(sqlStatesCurrentLine, false);
if (!options.foldOnlyBegin) {
if (levelCurrent > levelNext) {
levelCurrent = levelNext;
}
if (!statementFound)
levelNext++;
statementFound = true;
} else if (levelCurrent > levelNext) {
// doesn't include this line into the folding block
// because doesn't hide LOOP or CASE (eg "END; LOOP" or "END; CASE")
levelCurrent = levelNext;
}
} else if (strcmp(s, "loop") == 0 ||
strcmp(s, "case") == 0) {
if (endFound) {
endFound = false;
if (options.foldOnlyBegin && !isUnfoldingIgnored) {
// this end isn't for begin block, but for loop block ("end loop;") or case block ("end case;")
// so ignore previous "end" by increment levelNext.
levelNext++;
}
if ((!options.foldOnlyBegin) && strcmp(s, "case") == 0) {
sqlStatesCurrentLine = sqlStates.EndCaseBlock(sqlStatesCurrentLine);
if (!sqlStates.IsCaseMergeWithoutWhenFound(sqlStatesCurrentLine))
levelNext--; //again for the "end case;" and block when
}
} else if (!options.foldOnlyBegin) {
if (strcmp(s, "case") == 0) {
sqlStatesCurrentLine = sqlStates.BeginCaseBlock(sqlStatesCurrentLine);
sqlStatesCurrentLine = sqlStates.CaseMergeWithoutWhenFound(sqlStatesCurrentLine, true);
}
if (levelCurrent > levelNext)
levelCurrent = levelNext;
if (!statementFound)
levelNext++;
statementFound = true;
} else if (levelCurrent > levelNext) {
// doesn't include this line into the folding block
// because doesn't hide LOOP or CASE (eg "END; LOOP" or "END; CASE")
levelCurrent = levelNext;
}
} else if ((!options.foldOnlyBegin) && (
// folding for ELSE and ELSIF block only if foldAtElse is set
// and IF or CASE aren't on only one line with ELSE or ELSIF (with flag statementFound)
options.foldAtElse && !statementFound) && strcmp(s, "elsif") == 0) {
sqlStatesCurrentLine = sqlStates.IntoCondition(sqlStatesCurrentLine, true);
levelCurrent--;
levelNext--;
} else if ((!options.foldOnlyBegin) && (
// folding for ELSE and ELSIF block only if foldAtElse is set
// and IF or CASE aren't on only one line with ELSE or ELSIF (with flag statementFound)
options.foldAtElse && !statementFound) && strcmp(s, "else") == 0) {
// prevent also ELSE is on the same line (eg. "ELSE ... END IF;")
statementFound = true;
if (sqlStates.IsIntoCaseBlock(sqlStatesCurrentLine) && sqlStates.IsCaseMergeWithoutWhenFound(sqlStatesCurrentLine)) {
sqlStatesCurrentLine = sqlStates.CaseMergeWithoutWhenFound(sqlStatesCurrentLine, false);
levelNext++;
} else {
// we are in same case "} ELSE {" in C language
levelCurrent--;
}
} else if (strcmp(s, "begin") == 0) {
levelNext++;
sqlStatesCurrentLine = sqlStates.IntoDeclareBlock(sqlStatesCurrentLine, false);
} else if ((strcmp(s, "end") == 0) ||
// SQL Anywhere permits IF ... ELSE ... ENDIF
// will only be active if "endif" appears in the
// keyword list.
(strcmp(s, "endif") == 0)) {
endFound = true;
levelNext--;
if (sqlStates.IsIntoSelectStatementOrAssignment(sqlStatesCurrentLine) && !sqlStates.IsCaseMergeWithoutWhenFound(sqlStatesCurrentLine))
levelNext--;
if (levelNext < SC_FOLDLEVELBASE) {
levelNext = SC_FOLDLEVELBASE;
isUnfoldingIgnored = true;
}
} else if ((!options.foldOnlyBegin) &&
strcmp(s, "when") == 0 &&
!sqlStates.IsIgnoreWhen(sqlStatesCurrentLine) &&
!sqlStates.IsIntoExceptionBlock(sqlStatesCurrentLine) && (
sqlStates.IsIntoCaseBlock(sqlStatesCurrentLine) ||
sqlStates.IsIntoMergeStatement(sqlStatesCurrentLine)
)
) {
sqlStatesCurrentLine = sqlStates.IntoCondition(sqlStatesCurrentLine, true);
// Don't foldind when CASE and WHEN are on the same line (with flag statementFound) (eg. "CASE selector WHEN expression1 THEN sequence_of_statements1;\n")
// and same way for MERGE statement.
if (!statementFound) {
if (!sqlStates.IsCaseMergeWithoutWhenFound(sqlStatesCurrentLine)) {
levelCurrent--;
levelNext--;
}
sqlStatesCurrentLine = sqlStates.CaseMergeWithoutWhenFound(sqlStatesCurrentLine, false);
}
} else if ((!options.foldOnlyBegin) && strcmp(s, "exit") == 0) {
sqlStatesCurrentLine = sqlStates.IgnoreWhen(sqlStatesCurrentLine, true);
} else if ((!options.foldOnlyBegin) && !sqlStates.IsIntoDeclareBlock(sqlStatesCurrentLine) && strcmp(s, "exception") == 0) {
sqlStatesCurrentLine = sqlStates.IntoExceptionBlock(sqlStatesCurrentLine, true);
} else if ((!options.foldOnlyBegin) &&
(strcmp(s, "declare") == 0 ||
strcmp(s, "function") == 0 ||
strcmp(s, "procedure") == 0 ||
strcmp(s, "package") == 0)) {
sqlStatesCurrentLine = sqlStates.IntoDeclareBlock(sqlStatesCurrentLine, true);
} else if ((!options.foldOnlyBegin) &&
strcmp(s, "merge") == 0) {
sqlStatesCurrentLine = sqlStates.IntoMergeStatement(sqlStatesCurrentLine, true);
sqlStatesCurrentLine = sqlStates.CaseMergeWithoutWhenFound(sqlStatesCurrentLine, true);
levelNext++;
statementFound = true;
} else if ((!options.foldOnlyBegin) &&
strcmp(s, "create") == 0) {
sqlStatesCurrentLine = sqlStates.IntoCreateStatement(sqlStatesCurrentLine, true);
} else if ((!options.foldOnlyBegin) &&
strcmp(s, "view") == 0 &&
sqlStates.IsIntoCreateStatement(sqlStatesCurrentLine)) {
sqlStatesCurrentLine = sqlStates.IntoCreateViewStatement(sqlStatesCurrentLine, true);
} else if ((!options.foldOnlyBegin) &&
strcmp(s, "as") == 0 &&
sqlStates.IsIntoCreateViewStatement(sqlStatesCurrentLine) &&
! sqlStates.IsIntoCreateViewAsStatement(sqlStatesCurrentLine)) {
sqlStatesCurrentLine = sqlStates.IntoCreateViewAsStatement(sqlStatesCurrentLine, true);
levelNext++;
}
}
if (atEOL) {
int levelUse = levelCurrent;
int lev = levelUse | levelNext << 16;
if (visibleChars == 0 && options.foldCompact)
lev |= SC_FOLDLEVELWHITEFLAG;
if (levelUse < levelNext)
lev |= SC_FOLDLEVELHEADERFLAG;
if (lev != styler.LevelAt(lineCurrent)) {
styler.SetLevel(lineCurrent, lev);
}
lineCurrent++;
levelCurrent = levelNext;
visibleChars = 0;
statementFound = false;
if (!options.foldOnlyBegin)
sqlStates.Set(lineCurrent, sqlStatesCurrentLine);
}
if (!isspacechar(ch)) {
visibleChars++;
}
}
}
LexerModule lmSQL(SCLEX_SQL, LexerSQL::LexerFactorySQL, "sql", sqlWordListDesc);
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