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-// Scintilla source code edit control
-/** @file LexSQL.cxx
- ** Lexer for SQL, including PL/SQL and SQL*Plus.
- **/
-// 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 ColouriseSQLDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
- Accessor &styler) {
-
- WordList &keywords1 = *keywordlists[0];
- WordList &keywords2 = *keywordlists[1];
- WordList &kw_pldoc = *keywordlists[2];
- WordList &kw_sqlplus = *keywordlists[3];
- WordList &kw_user1 = *keywordlists[4];
- WordList &kw_user2 = *keywordlists[5];
- WordList &kw_user3 = *keywordlists[6];
- WordList &kw_user4 = *keywordlists[7];
-
- StyleContext sc(startPos, length, initStyle, styler);
-
- // property sql.backslash.escapes
- // Enables backslash as an escape character in SQL.
- bool sqlBackslashEscapes = styler.GetPropertyInt("sql.backslash.escapes", 0) != 0;
-
- bool sqlBackticksIdentifier = styler.GetPropertyInt("lexer.sql.backticks.identifier", 0) != 0;
- int styleBeforeDCKeyword = SCE_SQL_DEFAULT;
- for (; sc.More(); sc.Forward()) {
- // 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.SetState(SCE_SQL_DEFAULT);
- }
- break;
- case SCE_SQL_IDENTIFIER:
- if (!IsAWordChar(sc.ch)) {
- 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 (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;
- }
-
- // Determine if a new state should be entered.
- if (sc.state == SCE_SQL_DEFAULT) {
- if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
- sc.SetState(SCE_SQL_NUMBER);
- } else if (IsAWordStart(sc.ch)) {
- sc.SetState(SCE_SQL_IDENTIFIER);
- } else if (sc.ch == 0x60 && 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 == '#') {
- 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();
-}
-
-static bool IsStreamCommentStyle(int style) {
- return style == SCE_SQL_COMMENT ||
- style == SCE_SQL_COMMENTDOC ||
- style == SCE_SQL_COMMENTDOCKEYWORD ||
- style == SCE_SQL_COMMENTDOCKEYWORDERROR;
-}
-
-// 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 FoldSQLDoc(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;
-
- // property fold.sql.exists
- // Enables "EXISTS" to end a fold as is started by "IF" in "DROP TABLE IF EXISTS".
- bool foldSqlExists = styler.GetPropertyInt("fold.sql.exists", 1) != 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;
- 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_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--;
- }
- }
- }
- if (style == SCE_SQL_OPERATOR) {
- if (ch == '(') {
- levelNext++;
- } else if (ch == ')') {
- levelNext--;
- }
- }
- // 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 = 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) && (strcmp(s, "if") == 0 || strcmp(s, "loop") == 0)) {
- if (endFound) {
- // ignore
- endFound = false;
- } else {
- levelNext++;
- }
- } else if (strcmp(s, "begin") == 0) {
- levelNext++;
- } else if ((strcmp(s, "end") == 0) ||
-// // DROP TABLE IF EXISTS or CREATE TABLE IF NOT EXISTS
- (foldSqlExists && (strcmp(s, "exists") == 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 (levelNext < SC_FOLDLEVELBASE) {
- levelNext = SC_FOLDLEVELBASE;
- }
- }
- }
- if (atEOL) {
- 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;
- }
- if (!isspacechar(ch)) {
- visibleChars++;
- }
- }
-}
-
-static const char * const sqlWordListDesc[] = {
- "Keywords",
- "Database Objects",
- "PLDoc",
- "SQL*Plus",
- "User Keywords 1",
- "User Keywords 2",
- "User Keywords 3",
- "User Keywords 4",
- 0
-};
-
-LexerModule lmSQL(SCLEX_SQL, ColouriseSQLDoc, "sql", FoldSQLDoc, sqlWordListDesc);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 18:25:31 +0000