408 lines
11 KiB
C++
408 lines
11 KiB
C++
// Scintilla source code edit control
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/** @file LexSTTXT.cxx
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** Lexer for Structured Text language.
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** Written by Pavel Bulochkin
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**/
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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 <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include <string>
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#include <string_view>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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using namespace Lexilla;
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static void ClassifySTTXTWord(WordList *keywordlists[], StyleContext &sc)
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{
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char s[256] = { 0 };
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sc.GetCurrentLowered(s, sizeof(s));
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if ((*keywordlists[0]).InList(s)) {
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sc.ChangeState(SCE_STTXT_KEYWORD);
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}
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else if ((*keywordlists[1]).InList(s)) {
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sc.ChangeState(SCE_STTXT_TYPE);
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}
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else if ((*keywordlists[2]).InList(s)) {
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sc.ChangeState(SCE_STTXT_FUNCTION);
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}
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else if ((*keywordlists[3]).InList(s)) {
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sc.ChangeState(SCE_STTXT_FB);
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}
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else if ((*keywordlists[4]).InList(s)) {
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sc.ChangeState(SCE_STTXT_VARS);
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}
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else if ((*keywordlists[5]).InList(s)) {
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sc.ChangeState(SCE_STTXT_PRAGMAS);
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}
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sc.SetState(SCE_STTXT_DEFAULT);
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}
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static void ColouriseSTTXTDoc (Sci_PositionU startPos, Sci_Position length, int initStyle,
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WordList *keywordlists[], Accessor &styler)
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{
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StyleContext sc(startPos, length, initStyle, styler);
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CharacterSet setWord(CharacterSet::setAlphaNum, "_", 0x80, true);
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CharacterSet setWordStart(CharacterSet::setAlpha, "_", 0x80, true);
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CharacterSet setNumber(CharacterSet::setDigits, "_.eE");
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CharacterSet setHexNumber(CharacterSet::setDigits, "_abcdefABCDEF");
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CharacterSet setOperator(CharacterSet::setNone,",.+-*/:;<=>[]()%&");
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CharacterSet setDataTime(CharacterSet::setDigits,"_.-:dmshDMSH");
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for ( ; sc.More() ; sc.Forward())
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{
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if(sc.atLineStart && sc.state != SCE_STTXT_COMMENT)
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sc.SetState(SCE_STTXT_DEFAULT);
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switch(sc.state)
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{
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case SCE_STTXT_NUMBER: {
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if(!setNumber.Contains(sc.ch))
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sc.SetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_HEXNUMBER: {
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if (setHexNumber.Contains(sc.ch))
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continue;
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else if(setDataTime.Contains(sc.ch))
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sc.ChangeState(SCE_STTXT_DATETIME);
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else if(setWord.Contains(sc.ch))
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sc.ChangeState(SCE_STTXT_DEFAULT);
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else
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sc.SetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_DATETIME: {
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if (setDataTime.Contains(sc.ch))
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continue;
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else if(setWord.Contains(sc.ch))
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sc.ChangeState(SCE_STTXT_DEFAULT);
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else
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sc.SetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_OPERATOR: {
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sc.SetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_PRAGMA: {
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if (sc.ch == '}')
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sc.ForwardSetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_COMMENTLINE: {
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if (sc.atLineStart)
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sc.SetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_COMMENT: {
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if(sc.Match('*',')'))
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{
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sc.Forward();
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sc.ForwardSetState(SCE_STTXT_DEFAULT);
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}
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break;
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}
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case SCE_STTXT_STRING1: {
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if(sc.atLineEnd)
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sc.SetState(SCE_STTXT_STRINGEOL);
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else if(sc.ch == '\'' && sc.chPrev != '$')
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sc.ForwardSetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_STRING2: {
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if (sc.atLineEnd)
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sc.SetState(SCE_STTXT_STRINGEOL);
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else if(sc.ch == '\"' && sc.chPrev != '$')
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sc.ForwardSetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_STRINGEOL: {
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if(sc.atLineStart)
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sc.SetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_CHARACTER: {
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if(setHexNumber.Contains(sc.ch))
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sc.SetState(SCE_STTXT_HEXNUMBER);
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else if(setDataTime.Contains(sc.ch))
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sc.SetState(SCE_STTXT_DATETIME);
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else sc.SetState(SCE_STTXT_DEFAULT);
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break;
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}
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case SCE_STTXT_IDENTIFIER: {
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if(!setWord.Contains(sc.ch))
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ClassifySTTXTWord(keywordlists, sc);
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break;
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}
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}
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if(sc.state == SCE_STTXT_DEFAULT)
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{
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if(IsADigit(sc.ch))
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sc.SetState(SCE_STTXT_NUMBER);
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else if (setWordStart.Contains(sc.ch))
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sc.SetState(SCE_STTXT_IDENTIFIER);
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else if (sc.Match('/', '/'))
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sc.SetState(SCE_STTXT_COMMENTLINE);
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else if(sc.Match('(', '*'))
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sc.SetState(SCE_STTXT_COMMENT);
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else if (sc.ch == '{')
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sc.SetState(SCE_STTXT_PRAGMA);
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else if (sc.ch == '\'')
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sc.SetState(SCE_STTXT_STRING1);
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else if (sc.ch == '\"')
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sc.SetState(SCE_STTXT_STRING2);
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else if(sc.ch == '#')
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sc.SetState(SCE_STTXT_CHARACTER);
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else if (setOperator.Contains(sc.ch))
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sc.SetState(SCE_STTXT_OPERATOR);
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}
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}
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if (sc.state == SCE_STTXT_IDENTIFIER && setWord.Contains(sc.chPrev))
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ClassifySTTXTWord(keywordlists, sc);
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sc.Complete();
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}
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static const char * const STTXTWordListDesc[] = {
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"Keywords",
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"Types",
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"Functions",
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"FB",
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"Local_Var",
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"Local_Pragma",
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0
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};
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static bool IsCommentLine(Sci_Position line, Accessor &styler, bool type)
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{
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Sci_Position pos = styler.LineStart(line);
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Sci_Position eolPos = styler.LineStart(line + 1) - 1;
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for (Sci_Position i = pos; i < eolPos; i++)
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{
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char ch = styler[i];
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char chNext = styler.SafeGetCharAt(i + 1);
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int style = styler.StyleAt(i);
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if(type) {
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if (ch == '/' && chNext == '/' && style == SCE_STTXT_COMMENTLINE)
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return true;
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}
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else if (ch == '(' && chNext == '*' && style == SCE_STTXT_COMMENT)
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break;
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if (!IsASpaceOrTab(ch))
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return false;
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}
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for (Sci_Position i = eolPos-2; i>pos; i--)
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{
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char ch = styler[i];
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char chPrev = styler.SafeGetCharAt(i-1);
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int style = styler.StyleAt(i);
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if(ch == ')' && chPrev == '*' && style == SCE_STTXT_COMMENT)
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return true;
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if(!IsASpaceOrTab(ch))
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return false;
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}
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return false;
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}
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static bool IsPragmaLine(Sci_Position line, Accessor &styler)
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{
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Sci_Position pos = styler.LineStart(line);
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Sci_Position eolPos = styler.LineStart(line+1) - 1;
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for (Sci_Position i = pos ; i < eolPos ; i++)
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{
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char ch = styler[i];
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int style = styler.StyleAt(i);
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if(ch == '{' && style == SCE_STTXT_PRAGMA)
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return true;
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else if (!IsASpaceOrTab(ch))
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return false;
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}
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return false;
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}
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static void GetRangeUpper(Sci_PositionU start,Sci_PositionU end,Accessor &styler,char *s,Sci_PositionU len)
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{
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Sci_PositionU i = 0;
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while ((i < end - start + 1) && (i < len-1)) {
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s[i] = static_cast<char>(toupper(styler[start + i]));
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i++;
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}
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s[i] = '\0';
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}
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static void ClassifySTTXTWordFoldPoint(int &levelCurrent,Sci_PositionU lastStart,
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Sci_PositionU currentPos, Accessor &styler)
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{
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char s[256];
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GetRangeUpper(lastStart, currentPos, styler, s, sizeof(s));
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// See Table C.2 - Keywords
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if (!strcmp(s, "ACTION") ||
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!strcmp(s, "CASE") ||
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!strcmp(s, "CONFIGURATION") ||
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!strcmp(s, "FOR") ||
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!strcmp(s, "FUNCTION") ||
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!strcmp(s, "FUNCTION_BLOCK") ||
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!strcmp(s, "IF") ||
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!strcmp(s, "INITIAL_STEP") ||
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!strcmp(s, "REPEAT") ||
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!strcmp(s, "RESOURCE") ||
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!strcmp(s, "STEP") ||
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!strcmp(s, "STRUCT") ||
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!strcmp(s, "TRANSITION") ||
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!strcmp(s, "TYPE") ||
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!strcmp(s, "VAR") ||
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!strcmp(s, "VAR_INPUT") ||
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!strcmp(s, "VAR_OUTPUT") ||
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!strcmp(s, "VAR_IN_OUT") ||
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!strcmp(s, "VAR_TEMP") ||
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!strcmp(s, "VAR_EXTERNAL") ||
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!strcmp(s, "VAR_ACCESS") ||
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!strcmp(s, "VAR_CONFIG") ||
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!strcmp(s, "VAR_GLOBAL") ||
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!strcmp(s, "WHILE"))
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{
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levelCurrent++;
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}
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else if (!strcmp(s, "END_ACTION") ||
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!strcmp(s, "END_CASE") ||
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!strcmp(s, "END_CONFIGURATION") ||
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!strcmp(s, "END_FOR") ||
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!strcmp(s, "END_FUNCTION") ||
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!strcmp(s, "END_FUNCTION_BLOCK") ||
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!strcmp(s, "END_IF") ||
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!strcmp(s, "END_REPEAT") ||
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!strcmp(s, "END_RESOURCE") ||
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!strcmp(s, "END_STEP") ||
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!strcmp(s, "END_STRUCT") ||
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!strcmp(s, "END_TRANSITION") ||
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!strcmp(s, "END_TYPE") ||
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!strcmp(s, "END_VAR") ||
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!strcmp(s, "END_WHILE"))
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{
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levelCurrent--;
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if (levelCurrent < SC_FOLDLEVELBASE) {
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levelCurrent = SC_FOLDLEVELBASE;
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}
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}
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}
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static void FoldSTTXTDoc(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *[],Accessor &styler)
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{
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bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
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bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
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bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
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Sci_PositionU endPos = startPos + length;
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int visibleChars = 0;
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Sci_Position lineCurrent = styler.GetLine(startPos);
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int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
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int levelCurrent = levelPrev;
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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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Sci_Position lastStart = 0;
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CharacterSet setWord(CharacterSet::setAlphaNum, "_", 0x80, true);
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for (Sci_PositionU i = startPos; i < endPos; i++)
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{
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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 && style == SCE_STTXT_COMMENT) {
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if(stylePrev != SCE_STTXT_COMMENT)
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levelCurrent++;
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else if(styleNext != SCE_STTXT_COMMENT && !atEOL)
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levelCurrent--;
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}
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if ( foldComment && atEOL && ( IsCommentLine(lineCurrent, styler,false)
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|| IsCommentLine(lineCurrent,styler,true))) {
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if(!IsCommentLine(lineCurrent-1, styler,true) && IsCommentLine(lineCurrent+1, styler,true))
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levelCurrent++;
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if (IsCommentLine(lineCurrent-1, styler,true) && !IsCommentLine(lineCurrent+1, styler,true))
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levelCurrent--;
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if (!IsCommentLine(lineCurrent-1, styler,false) && IsCommentLine(lineCurrent+1, styler,false))
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levelCurrent++;
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if (IsCommentLine(lineCurrent-1, styler,false) && !IsCommentLine(lineCurrent+1, styler,false))
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levelCurrent--;
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}
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if(foldPreprocessor && atEOL && IsPragmaLine(lineCurrent, styler)) {
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if(!IsPragmaLine(lineCurrent-1, styler) && IsPragmaLine(lineCurrent+1, styler ))
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levelCurrent++;
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else if(IsPragmaLine(lineCurrent-1, styler) && !IsPragmaLine(lineCurrent+1, styler))
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levelCurrent--;
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}
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if (stylePrev != SCE_STTXT_KEYWORD && style == SCE_STTXT_KEYWORD) {
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lastStart = i;
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}
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if(stylePrev == SCE_STTXT_KEYWORD) {
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if(setWord.Contains(ch) && !setWord.Contains(chNext))
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ClassifySTTXTWordFoldPoint(levelCurrent,lastStart, i, styler);
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}
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if (!IsASpace(ch)) {
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visibleChars++;
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}
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if (atEOL) {
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int lev = levelPrev;
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if (visibleChars == 0 && foldCompact)
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lev |= SC_FOLDLEVELWHITEFLAG;
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if ((levelCurrent > levelPrev) && (visibleChars > 0))
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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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lineCurrent++;
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levelPrev = levelCurrent;
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visibleChars = 0;
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}
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// If we didn't reach the EOL in previous loop, store line level and whitespace information.
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// The rest will be filled in later...
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int lev = levelPrev;
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if (visibleChars == 0 && foldCompact)
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lev |= SC_FOLDLEVELWHITEFLAG;
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styler.SetLevel(lineCurrent, lev);
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}
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}
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LexerModule lmSTTXT(SCLEX_STTXT, ColouriseSTTXTDoc, "fcST", FoldSTTXTDoc, STTXTWordListDesc);
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