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