[wxWidgets.git] / src / stc / scintilla / lexers / LexASY.cxx

// Scintilla source code edit control
//Author: instanton (email: soft_share<at>126<dot>com)
// The License.txt file describes the conditions under which this software may be distributed.

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>

#include "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"

#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif

static void ColouriseAsyDoc(unsigned int startPos, int length, int initStyle,
		WordList *keywordlists[], Accessor &styler) {

	WordList &keywords = *keywordlists[0];
	WordList &keywords2 = *keywordlists[1];

	CharacterSet setWordStart(CharacterSet::setAlpha, "_", 0x80, true);
	CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);

	int visibleChars = 0;

	StyleContext sc(startPos, length, initStyle, styler);

	for (; sc.More(); sc.Forward()) {

		if (sc.atLineStart) {
			if (sc.state == SCE_ASY_STRING) {
				sc.SetState(SCE_ASY_STRING);
			}
			visibleChars = 0;
		}

		if (sc.ch == '\\') {
			if (sc.chNext == '\n' || sc.chNext == '\r') {
				sc.Forward();
				if (sc.ch == '\r' && sc.chNext == '\n') {
					sc.Forward();
				}
//				continuationLine = true;
				continue;
			}
		}

		// Determine if the current state should terminate.
		switch (sc.state) {
			case SCE_ASY_OPERATOR:
				sc.SetState(SCE_ASY_DEFAULT);
				break;
			case SCE_ASY_NUMBER:
				if (!setWord.Contains(sc.ch)) {
					sc.SetState(SCE_ASY_DEFAULT);
				}
				break;
			case SCE_ASY_IDENTIFIER:
				if (!setWord.Contains(sc.ch) || (sc.ch == '.')) {
					char s[1000];
					sc.GetCurrentLowered(s, sizeof(s));
					if (keywords.InList(s)) {
						sc.ChangeState(SCE_ASY_WORD);
					} else if (keywords2.InList(s)) {
						sc.ChangeState(SCE_ASY_WORD2);
					}
					sc.SetState(SCE_ASY_DEFAULT);
				}
				break;
			case SCE_ASY_COMMENT:
				if (sc.Match('*', '/')) {
					sc.Forward();
					sc.ForwardSetState(SCE_ASY_DEFAULT);
				}
				break;
			case SCE_ASY_COMMENTLINE:
				if (sc.atLineStart) {
					sc.SetState(SCE_ASY_DEFAULT);
				}
				break;
			case SCE_ASY_STRING:
				if (sc.atLineEnd) {
					sc.ChangeState(SCE_ASY_STRINGEOL);
				} else if (sc.ch == '\\') {
					if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
						sc.Forward();
					}
				} else if (sc.ch == '\"') {
					sc.ForwardSetState(SCE_ASY_DEFAULT);
				}
				break;
			case SCE_ASY_CHARACTER:
				if (sc.atLineEnd) {
					sc.ChangeState(SCE_ASY_STRINGEOL);
				} else 	if (sc.ch == '\\') {
					if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
						sc.Forward();
					}
				} else if (sc.ch == '\'') {
					sc.ForwardSetState(SCE_ASY_DEFAULT);
				}
				break;
		}

		// Determine if a new state should be entered.
		if (sc.state == SCE_ASY_DEFAULT) {
			if (setWordStart.Contains(sc.ch) || (sc.ch == '@')) {
				sc.SetState(SCE_ASY_IDENTIFIER);
			} else if (sc.Match('/', '*')) {
				sc.SetState(SCE_ASY_COMMENT);
				sc.Forward();	//
			} else if (sc.Match('/', '/')) {
				sc.SetState(SCE_ASY_COMMENTLINE);
			} else if (sc.ch == '\"') {
				sc.SetState(SCE_ASY_STRING);
			} else if (sc.ch == '\'') {
				sc.SetState(SCE_ASY_CHARACTER);
			} else if (sc.ch == '#' && visibleChars == 0) {
				do {
					sc.Forward();
				} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
				if (sc.atLineEnd) {
					sc.SetState(SCE_ASY_DEFAULT);
				}
			} else if (isoperator(static_cast<char>(sc.ch))) {
				sc.SetState(SCE_ASY_OPERATOR);
			}
		}

	}
	sc.Complete();
}

static bool IsAsyCommentStyle(int style) {
	return style == SCE_ASY_COMMENT;
}


static inline bool isASYidentifier(int ch) {
	return
      ((ch >= 'a') && (ch <= 'z')) || ((ch >= 'A') && (ch <= 'Z')) ;
}

static int ParseASYWord(unsigned int pos, Accessor &styler, char *word)
{
  int length=0;
  char ch=styler.SafeGetCharAt(pos);
  *word=0;

  while(isASYidentifier(ch) && length<100){
          word[length]=ch;
          length++;
          ch=styler.SafeGetCharAt(pos+length);
  }
  word[length]=0;
  return length;
}

static bool IsASYDrawingLine(int line, Accessor &styler) {
	int pos = styler.LineStart(line);
	int eol_pos = styler.LineStart(line + 1) - 1;

	int startpos = pos;
	char buffer[100]="";

	while (startpos<eol_pos){
		char ch = styler[startpos];
		ParseASYWord(startpos,styler,buffer);
		bool drawcommands = strncmp(buffer,"draw",4)==0||
			strncmp(buffer,"pair",4)==0||strncmp(buffer,"label",5)==0;
		if (!drawcommands && ch!=' ') return false;
		else if (drawcommands) return true;
		startpos++;
	}
	return false;
}

static void FoldAsyDoc(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 foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 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 levelMinCurrent = levelCurrent;
	int levelNext = levelCurrent;
	char chNext = styler[startPos];
	int styleNext = styler.StyleAt(startPos);
	int style = initStyle;
	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 && IsAsyCommentStyle(style)) {
			if (!IsAsyCommentStyle(stylePrev) && (stylePrev != SCE_ASY_COMMENTLINEDOC)) {
				levelNext++;
			} else if (!IsAsyCommentStyle(styleNext) && (styleNext != SCE_ASY_COMMENTLINEDOC) && !atEOL) {
				levelNext--;
			}
		}
		if (style == SCE_ASY_OPERATOR) {
			if (ch == '{') {
				if (levelMinCurrent > levelNext) {
					levelMinCurrent = levelNext;
				}
				levelNext++;
			} else if (ch == '}') {
				levelNext--;
			}
		}

		if (atEOL && IsASYDrawingLine(lineCurrent, styler)){
			if (lineCurrent==0 && IsASYDrawingLine(lineCurrent + 1, styler))
				levelNext++;
			else if (lineCurrent!=0 && !IsASYDrawingLine(lineCurrent - 1, styler)
				&& IsASYDrawingLine(lineCurrent + 1, styler)
				)
				levelNext++;
			else if (lineCurrent!=0 && IsASYDrawingLine(lineCurrent - 1, styler) &&
				!IsASYDrawingLine(lineCurrent+1, styler))
				levelNext--;
		}

		if (atEOL) {
			int levelUse = levelCurrent;
			if (foldAtElse) {
				levelUse = levelMinCurrent;
			}
			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;
			levelMinCurrent = levelCurrent;
			visibleChars = 0;
		}
		if (!IsASpace(ch))
			visibleChars++;
	}
}

static const char * const asyWordLists[] = {
            "Primary keywords and identifiers",
            "Secondary keywords and identifiers",
            0,
        };

LexerModule lmASY(SCLEX_ASYMPTOTE, ColouriseAsyDoc, "asy", FoldAsyDoc, asyWordLists);
Commit	Line	Data
7e0c58e9 RD	1	// Scintilla source code edit control
	2	//Author: instanton (email: soft_share<at>126<dot>com)
	3	// The License.txt file describes the conditions under which this software may be distributed.
	4
	5	#include <stdlib.h>
	6	#include <string.h>
7e0c58e9 RD	7	#include <stdio.h>
7e0c58e9 RD	8	#include <stdarg.h>
1dcf666d	9	#include <assert.h>
7e0c58e9	10
1dcf666d RD	11	#include "ILexer.h"
	12	#include "Scintilla.h"
	13	#include "SciLexer.h"
7e0c58e9	14
1dcf666d RD	15	#include "WordList.h"
1dcf666d RD	16	#include "LexAccessor.h"
7e0c58e9 RD	17	#include "Accessor.h"
7e0c58e9 RD	18	#include "StyleContext.h"
7e0c58e9	19	#include "CharacterSet.h"
1dcf666d	20	#include "LexerModule.h"
7e0c58e9 RD	21
	22	#ifdef SCI_NAMESPACE
	23	using namespace Scintilla;
	24	#endif
	25
1dcf666d	26	static void ColouriseAsyDoc(unsigned int startPos, int length, int initStyle,
7e0c58e9 RD	27	WordList *keywordlists[], Accessor &styler) {
	28
	29	WordList &keywords = *keywordlists[0];
	30	WordList &keywords2 = *keywordlists[1];
	31
	32	CharacterSet setWordStart(CharacterSet::setAlpha, "_", 0x80, true);
	33	CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
	34
	35	int visibleChars = 0;
	36
	37	StyleContext sc(startPos, length, initStyle, styler);
	38
	39	for (; sc.More(); sc.Forward()) {
	40
	41	if (sc.atLineStart) {
	42	if (sc.state == SCE_ASY_STRING) {
	43	sc.SetState(SCE_ASY_STRING);
	44	}
	45	visibleChars = 0;
	46	}
	47
	48	if (sc.ch == '\\') {
	49	if (sc.chNext == '\n' \|\| sc.chNext == '\r') {
	50	sc.Forward();
	51	if (sc.ch == '\r' && sc.chNext == '\n') {
	52	sc.Forward();
	53	}
	54	// continuationLine = true;
	55	continue;
	56	}
	57	}
	58
	59	// Determine if the current state should terminate.
	60	switch (sc.state) {
	61	case SCE_ASY_OPERATOR:
	62	sc.SetState(SCE_ASY_DEFAULT);
	63	break;
	64	case SCE_ASY_NUMBER:
	65	if (!setWord.Contains(sc.ch)) {
	66	sc.SetState(SCE_ASY_DEFAULT);
	67	}
	68	break;
	69	case SCE_ASY_IDENTIFIER:
	70	if (!setWord.Contains(sc.ch) \|\| (sc.ch == '.')) {
	71	char s[1000];
	72	sc.GetCurrentLowered(s, sizeof(s));
	73	if (keywords.InList(s)) {
	74	sc.ChangeState(SCE_ASY_WORD);
	75	} else if (keywords2.InList(s)) {
	76	sc.ChangeState(SCE_ASY_WORD2);
	77	}
	78	sc.SetState(SCE_ASY_DEFAULT);
	79	}
	80	break;
	81	case SCE_ASY_COMMENT:
	82	if (sc.Match('*', '/')) {
	83	sc.Forward();
	84	sc.ForwardSetState(SCE_ASY_DEFAULT);
	85	}
	86	break;
	87	case SCE_ASY_COMMENTLINE:
	88	if (sc.atLineStart) {
	89	sc.SetState(SCE_ASY_DEFAULT);
	90	}
91	break;
92	case SCE_ASY_STRING:
93	if (sc.atLineEnd) {
94	sc.ChangeState(SCE_ASY_STRINGEOL);
95	} else if (sc.ch == '\\') {
96	if (sc.chNext == '\"' \|\| sc.chNext == '\'' \|\| sc.chNext == '\\') {
97	sc.Forward();
98	}
99	} else if (sc.ch == '\"') {
100	sc.ForwardSetState(SCE_ASY_DEFAULT);
101	}
102	break;
103	case SCE_ASY_CHARACTER:
104	if (sc.atLineEnd) {
105	sc.ChangeState(SCE_ASY_STRINGEOL);
106	} else if (sc.ch == '\\') {
107	if (sc.chNext == '\"' \|\| sc.chNext == '\'' \|\| sc.chNext == '\\') {
108	sc.Forward();
109	}
110	} else if (sc.ch == '\'') {
111	sc.ForwardSetState(SCE_ASY_DEFAULT);
112	}
113	break;
114	}
115
116	// Determine if a new state should be entered.
117	if (sc.state == SCE_ASY_DEFAULT) {
118	if (setWordStart.Contains(sc.ch) \|\| (sc.ch == '@')) {
119	sc.SetState(SCE_ASY_IDENTIFIER);
120	} else if (sc.Match('/', '*')) {
121	sc.SetState(SCE_ASY_COMMENT);
1dcf666d	122	sc.Forward(); //
7e0c58e9 RD	123	} else if (sc.Match('/', '/')) {
	124	sc.SetState(SCE_ASY_COMMENTLINE);
	125	} else if (sc.ch == '\"') {
	126	sc.SetState(SCE_ASY_STRING);
	127	} else if (sc.ch == '\'') {
	128	sc.SetState(SCE_ASY_CHARACTER);
	129	} else if (sc.ch == '#' && visibleChars == 0) {
	130	do {
	131	sc.Forward();
	132	} while ((sc.ch == ' ' \|\| sc.ch == '\t') && sc.More());
	133	if (sc.atLineEnd) {
	134	sc.SetState(SCE_ASY_DEFAULT);
	135	}
	136	} else if (isoperator(static_cast<char>(sc.ch))) {
	137	sc.SetState(SCE_ASY_OPERATOR);
	138	}
	139	}
	140
	141	}
	142	sc.Complete();
	143	}
	144
	145	static bool IsAsyCommentStyle(int style) {
	146	return style == SCE_ASY_COMMENT;
	147	}
	148
	149
	150	static inline bool isASYidentifier(int ch) {
	151	return
	152	((ch >= 'a') && (ch <= 'z')) \|\| ((ch >= 'A') && (ch <= 'Z')) ;
	153	}
	154
	155	static int ParseASYWord(unsigned int pos, Accessor &styler, char *word)
	156	{
	157	int length=0;
	158	char ch=styler.SafeGetCharAt(pos);
	159	*word=0;
	160
	161	while(isASYidentifier(ch) && length<100){
	162	word[length]=ch;
	163	length++;
	164	ch=styler.SafeGetCharAt(pos+length);
	165	}
1dcf666d	166	word[length]=0;
7e0c58e9 RD	167	return length;
	168	}
	169
	170	static bool IsASYDrawingLine(int line, Accessor &styler) {
	171	int pos = styler.LineStart(line);
	172	int eol_pos = styler.LineStart(line + 1) - 1;
1dcf666d	173
7e0c58e9 RD	174	int startpos = pos;
	175	char buffer[100]="";
	176
	177	while (startpos<eol_pos){
	178	char ch = styler[startpos];
	179	ParseASYWord(startpos,styler,buffer);
	180	bool drawcommands = strncmp(buffer,"draw",4)==0\|\|
	181	strncmp(buffer,"pair",4)==0\|\|strncmp(buffer,"label",5)==0;
	182	if (!drawcommands && ch!=' ') return false;
	183	else if (drawcommands) return true;
	184	startpos++;
1dcf666d	185	}
7e0c58e9 RD	186	return false;
	187	}
	188
1dcf666d	189	static void FoldAsyDoc(unsigned int startPos, int length, int initStyle,
7e0c58e9 RD	190	WordList *[], Accessor &styler) {
	191	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	192	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	193	bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
	194	unsigned int endPos = startPos + length;
	195	int visibleChars = 0;
	196	int lineCurrent = styler.GetLine(startPos);
	197	int levelCurrent = SC_FOLDLEVELBASE;
	198	if (lineCurrent > 0)
	199	levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
	200	int levelMinCurrent = levelCurrent;
	201	int levelNext = levelCurrent;
	202	char chNext = styler[startPos];
	203	int styleNext = styler.StyleAt(startPos);
	204	int style = initStyle;
	205	for (unsigned int i = startPos; i < endPos; i++) {
	206	char ch = chNext;
	207	chNext = styler.SafeGetCharAt(i + 1);
	208	int stylePrev = style;
	209	style = styleNext;
	210	styleNext = styler.StyleAt(i + 1);
	211	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
	212	if (foldComment && IsAsyCommentStyle(style)) {
	213	if (!IsAsyCommentStyle(stylePrev) && (stylePrev != SCE_ASY_COMMENTLINEDOC)) {
	214	levelNext++;
	215	} else if (!IsAsyCommentStyle(styleNext) && (styleNext != SCE_ASY_COMMENTLINEDOC) && !atEOL) {
	216	levelNext--;
	217	}
	218	}
	219	if (style == SCE_ASY_OPERATOR) {
	220	if (ch == '{') {
	221	if (levelMinCurrent > levelNext) {
	222	levelMinCurrent = levelNext;
	223	}
	224	levelNext++;
	225	} else if (ch == '}') {
	226	levelNext--;
	227	}
	228	}
	229
	230	if (atEOL && IsASYDrawingLine(lineCurrent, styler)){
	231	if (lineCurrent==0 && IsASYDrawingLine(lineCurrent + 1, styler))
	232	levelNext++;
	233	else if (lineCurrent!=0 && !IsASYDrawingLine(lineCurrent - 1, styler)
	234	&& IsASYDrawingLine(lineCurrent + 1, styler)
	235	)
	236	levelNext++;
	237	else if (lineCurrent!=0 && IsASYDrawingLine(lineCurrent - 1, styler) &&
	238	!IsASYDrawingLine(lineCurrent+1, styler))
	239	levelNext--;
1dcf666d	240	}
7e0c58e9 RD	241
	242	if (atEOL) {
	243	int levelUse = levelCurrent;
	244	if (foldAtElse) {
	245	levelUse = levelMinCurrent;
	246	}
	247	int lev = levelUse \| levelNext << 16;
	248	if (visibleChars == 0 && foldCompact)
	249	lev \|= SC_FOLDLEVELWHITEFLAG;
	250	if (levelUse < levelNext)
	251	lev \|= SC_FOLDLEVELHEADERFLAG;
	252	if (lev != styler.LevelAt(lineCurrent)) {
	253	styler.SetLevel(lineCurrent, lev);
	254	}
	255	lineCurrent++;
	256	levelCurrent = levelNext;
	257	levelMinCurrent = levelCurrent;
	258	visibleChars = 0;
	259	}
	260	if (!IsASpace(ch))
	261	visibleChars++;
	262	}
	263	}
	264
	265	static const char * const asyWordLists[] = {
	266	"Primary keywords and identifiers",
	267	"Secondary keywords and identifiers",
	268	0,
	269	};
	270
	271	LexerModule lmASY(SCLEX_ASYMPTOTE, ColouriseAsyDoc, "asy", FoldAsyDoc, asyWordLists);