[wxWidgets.git] / src / stc / scintilla / src / LexAVE.cxx

// SciTE - Scintilla based Text Editor
/** @file LexAVE.cxx
 ** Lexer for Avenue.
 **
  ** Written by Alexey Yutkin <yutkin@geol.msu.ru>.
 **/
// Copyright 1998-2002 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 <stdarg.h>
#include <stdio.h>
#include <fcntl.h>

#include "Platform.h"

#include "PropSet.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"


static inline bool IsAWordChar(const int ch) {
	return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_');
}
static inline bool IsEnumChar(const int ch) {
	return (ch < 0x80) && (isalnum(ch)|| ch == '_');
}
static inline bool IsANumberChar(const int ch) {
	return (ch < 0x80) && (isalnum(ch) || ch == '.' );
}

inline bool IsAWordStart(const int ch) {
	return (ch < 0x80) && (isalnum(ch) || ch == '_');
}

inline bool isAveOperator(char ch) {
	if (isalnum(ch))
		return false;
	// '.' left out as it is used to make up numbers
	if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
		ch == '(' || ch == ')' || ch == '=' ||
		ch == '{' || ch == '}' ||
		ch == '[' || ch == ']' || ch == ';' ||
		ch == '<' || ch == '>' || ch == ',' ||
		ch == '.'  )
		return true;
	return false;
}

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

	WordList &keywords = *keywordlists[0];
	WordList &keywords2 = *keywordlists[1];
	WordList &keywords3 = *keywordlists[2];
	WordList &keywords4 = *keywordlists[3];
	WordList &keywords5 = *keywordlists[4];
	WordList &keywords6 = *keywordlists[5];

	// Do not leak onto next line
	if (initStyle == SCE_AVE_STRINGEOL) {
		initStyle = SCE_AVE_DEFAULT;
	}

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

	for (; sc.More(); sc.Forward()) {
		if (sc.atLineEnd) {
			// Update the line state, so it can be seen by next line
			int currentLine = styler.GetLine(sc.currentPos);
			styler.SetLineState(currentLine, 0);
		}
		if (sc.atLineStart && (sc.state == SCE_AVE_STRING)) {
			// Prevent SCE_AVE_STRINGEOL from leaking back to previous line
			sc.SetState(SCE_AVE_STRING);
		}


		// Determine if the current state should terminate.
		if (sc.state == SCE_AVE_OPERATOR) {
			sc.SetState(SCE_AVE_DEFAULT);
		} else if (sc.state == SCE_AVE_NUMBER) {
			if (!IsANumberChar(sc.ch)) {
				sc.SetState(SCE_AVE_DEFAULT);
			}
		} else if (sc.state == SCE_AVE_ENUM) {
			if (!IsEnumChar(sc.ch)) {
				sc.SetState(SCE_AVE_DEFAULT);
			}
		} else if (sc.state == SCE_AVE_IDENTIFIER) {
			if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
				char s[100];
				//sc.GetCurrent(s, sizeof(s));
				sc.GetCurrentLowered(s, sizeof(s));
				if (keywords.InList(s)) {
					sc.ChangeState(SCE_AVE_WORD);
				} else if (keywords2.InList(s)) {
					sc.ChangeState(SCE_AVE_WORD2);
				} else if (keywords3.InList(s)) {
					sc.ChangeState(SCE_AVE_WORD3);
				} else if (keywords4.InList(s)) {
					sc.ChangeState(SCE_AVE_WORD4);
				} else if (keywords5.InList(s)) {
					sc.ChangeState(SCE_AVE_WORD5);
				} else if (keywords6.InList(s)) {
					sc.ChangeState(SCE_AVE_WORD6);
				}
				sc.SetState(SCE_AVE_DEFAULT);
			}
		} else if (sc.state == SCE_AVE_COMMENT) {
			if (sc.atLineEnd) {
				sc.SetState(SCE_AVE_DEFAULT);
			}
		} else if (sc.state == SCE_AVE_STRING) {
			 if (sc.ch == '\"') {
				sc.ForwardSetState(SCE_AVE_DEFAULT);
			} else if (sc.atLineEnd) {
				sc.ChangeState(SCE_AVE_STRINGEOL);
				sc.ForwardSetState(SCE_AVE_DEFAULT);
			}
		}

		// Determine if a new state should be entered.
		if (sc.state == SCE_AVE_DEFAULT) {
			if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
				sc.SetState(SCE_AVE_NUMBER);
			} else if (IsAWordStart(sc.ch)) {
				sc.SetState(SCE_AVE_IDENTIFIER);
			} else if (sc.Match('\"')) {
				sc.SetState(SCE_AVE_STRING);
			} else if (sc.Match('\'')) {
				sc.SetState(SCE_AVE_COMMENT);
				sc.Forward();
			} else if (isAveOperator(static_cast<char>(sc.ch))) {
				sc.SetState(SCE_AVE_OPERATOR);
			} else if (sc.Match('#')) {
				sc.SetState(SCE_AVE_ENUM);
				sc.Forward();
			}
		}
	}
	sc.Complete();
}

static void FoldAveDoc(unsigned int startPos, int length, int /* initStyle */, WordList *[],
                       Accessor &styler) {
	unsigned int lengthDoc = startPos + length;
	int visibleChars = 0;
	int lineCurrent = styler.GetLine(startPos);
	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	int levelCurrent = levelPrev;
	char chNext = static_cast<char>(tolower(styler[startPos]));
	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	int styleNext = styler.StyleAt(startPos);
	char s[10];

	for (unsigned int i = startPos; i < lengthDoc; i++) {
		char ch = static_cast<char>(tolower(chNext));
		chNext = static_cast<char>(tolower(styler.SafeGetCharAt(i + 1)));
		int style = styleNext;
		styleNext = styler.StyleAt(i + 1);
		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
		if (style == SCE_AVE_WORD) {
			if (ch == 't' || ch == 'f' || ch == 'w' || ch == 'e') {
				for (unsigned int j = 0; j < 6; j++) {
					if (!iswordchar(styler[i + j])) {
						break;
					}
					s[j] = static_cast<char>(tolower(styler[i + j]));
					s[j + 1] = '\0';
				}

				if ((strcmp(s, "then") == 0) || (strcmp(s, "for") == 0) || (strcmp(s, "while") == 0)) {
					levelCurrent++;
				}
				if ((strcmp(s, "end") == 0)) {
					levelCurrent--;
				}
			}
		} else if (style == SCE_AVE_OPERATOR) {
			if (ch == '{' || ch == '(') {
				levelCurrent++;
			} else if (ch == '}' || ch == ')') {
				levelCurrent--;
			}
		}

		if (atEOL) {
			int lev = levelPrev;
			if (visibleChars == 0 && foldCompact) {
				lev |= SC_FOLDLEVELWHITEFLAG;
			}
			if ((levelCurrent > levelPrev) && (visibleChars > 0)) {
				lev |= SC_FOLDLEVELHEADERFLAG;
			}
			if (lev != styler.LevelAt(lineCurrent)) {
				styler.SetLevel(lineCurrent, lev);
			}
			lineCurrent++;
			levelPrev = levelCurrent;
			visibleChars = 0;
		}
		if (!isspacechar(ch)) {
			visibleChars++;
		}
	}
	// Fill in the real level of the next line, keeping the current flags as they will be filled in later

	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}

LexerModule lmAVE(SCLEX_AVE, ColouriseAveDoc, "ave", FoldAveDoc);
Commit	Line	Data
65ec6247 RD	1	// SciTE - Scintilla based Text Editor
	2	/** @file LexAVE.cxx
	3	** Lexer for Avenue.
9e730a78 RD	4	**
9e730a78 RD	5	** Written by Alexey Yutkin <yutkin@geol.msu.ru>.
65ec6247	6	**/
9e730a78	7	// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
65ec6247 RD	8	// The License.txt file describes the conditions under which this software may be distributed.
	9
	10	#include <stdlib.h>
	11	#include <string.h>
	12	#include <ctype.h>
65ec6247	13	#include <stdarg.h>
9e730a78 RD	14	#include <stdio.h>
9e730a78 RD	15	#include <fcntl.h>
65ec6247 RD	16
	17	#include "Platform.h"
	18
	19	#include "PropSet.h"
	20	#include "Accessor.h"
9e730a78	21	#include "StyleContext.h"
65ec6247 RD	22	#include "KeyWords.h"
	23	#include "Scintilla.h"
	24	#include "SciLexer.h"
	25
9e730a78 RD	26
	27
	28	static inline bool IsAWordChar(const int ch) {
	29	return (ch < 0x80) && (isalnum(ch) \|\| ch == '.' \|\| ch == '_');
	30	}
	31	static inline bool IsEnumChar(const int ch) {
	32	return (ch < 0x80) && (isalnum(ch)\|\| ch == '_');
	33	}
	34	static inline bool IsANumberChar(const int ch) {
	35	return (ch < 0x80) && (isalnum(ch) \|\| ch == '.' );
	36	}
	37
	38	inline bool IsAWordStart(const int ch) {
	39	return (ch < 0x80) && (isalnum(ch) \|\| ch == '_');
	40	}
	41
	42	inline bool isAveOperator(char ch) {
	43	if (isalnum(ch))
	44	return false;
	45	// '.' left out as it is used to make up numbers
	46	if (ch == '*' \|\| ch == '/' \|\| ch == '-' \|\| ch == '+' \|\|
	47	ch == '(' \|\| ch == ')' \|\| ch == '=' \|\|
	48	ch == '{' \|\| ch == '}' \|\|
	49	ch == '[' \|\| ch == ']' \|\| ch == ';' \|\|
	50	ch == '<' \|\| ch == '>' \|\| ch == ',' \|\|
	51	ch == '.' )
	52	return true;
	53	return false;
	54	}
	55
	56	static void ColouriseAveDoc(
	57	unsigned int startPos,
	58	int length,
	59	int initStyle,
	60	WordList *keywordlists[],
65ec6247 RD	61	Accessor &styler) {
	62
	63	WordList &keywords = *keywordlists[0];
9e730a78 RD	64	WordList &keywords2 = *keywordlists[1];
	65	WordList &keywords3 = *keywordlists[2];
	66	WordList &keywords4 = *keywordlists[3];
	67	WordList &keywords5 = *keywordlists[4];
	68	WordList &keywords6 = *keywordlists[5];
	69
	70	// Do not leak onto next line
	71	if (initStyle == SCE_AVE_STRINGEOL) {
	72	initStyle = SCE_AVE_DEFAULT;
	73	}
65ec6247	74
9e730a78	75	StyleContext sc(startPos, length, initStyle, styler);
65ec6247	76
9e730a78 RD	77	for (; sc.More(); sc.Forward()) {
	78	if (sc.atLineEnd) {
	79	// Update the line state, so it can be seen by next line
	80	int currentLine = styler.GetLine(sc.currentPos);
	81	styler.SetLineState(currentLine, 0);
	82	}
	83	if (sc.atLineStart && (sc.state == SCE_AVE_STRING)) {
	84	// Prevent SCE_AVE_STRINGEOL from leaking back to previous line
	85	sc.SetState(SCE_AVE_STRING);
	86	}
65ec6247	87
65ec6247	88
9e730a78 RD	89	// Determine if the current state should terminate.
	90	if (sc.state == SCE_AVE_OPERATOR) {
	91	sc.SetState(SCE_AVE_DEFAULT);
	92	} else if (sc.state == SCE_AVE_NUMBER) {
	93	if (!IsANumberChar(sc.ch)) {
	94	sc.SetState(SCE_AVE_DEFAULT);
65ec6247	95	}
9e730a78 RD	96	} else if (sc.state == SCE_AVE_ENUM) {
	97	if (!IsEnumChar(sc.ch)) {
	98	sc.SetState(SCE_AVE_DEFAULT);
65ec6247	99	}
9e730a78 RD	100	} else if (sc.state == SCE_AVE_IDENTIFIER) {
	101	if (!IsAWordChar(sc.ch) \|\| (sc.ch == '.')) {
	102	char s[100];
	103	//sc.GetCurrent(s, sizeof(s));
	104	sc.GetCurrentLowered(s, sizeof(s));
	105	if (keywords.InList(s)) {
	106	sc.ChangeState(SCE_AVE_WORD);
	107	} else if (keywords2.InList(s)) {
	108	sc.ChangeState(SCE_AVE_WORD2);
	109	} else if (keywords3.InList(s)) {
	110	sc.ChangeState(SCE_AVE_WORD3);
	111	} else if (keywords4.InList(s)) {
	112	sc.ChangeState(SCE_AVE_WORD4);
	113	} else if (keywords5.InList(s)) {
	114	sc.ChangeState(SCE_AVE_WORD5);
	115	} else if (keywords6.InList(s)) {
	116	sc.ChangeState(SCE_AVE_WORD6);
	117	}
	118	sc.SetState(SCE_AVE_DEFAULT);
65ec6247	119	}
9e730a78 RD	120	} else if (sc.state == SCE_AVE_COMMENT) {
	121	if (sc.atLineEnd) {
	122	sc.SetState(SCE_AVE_DEFAULT);
65ec6247	123	}
9e730a78 RD	124	} else if (sc.state == SCE_AVE_STRING) {
	125	if (sc.ch == '\"') {
	126	sc.ForwardSetState(SCE_AVE_DEFAULT);
	127	} else if (sc.atLineEnd) {
	128	sc.ChangeState(SCE_AVE_STRINGEOL);
	129	sc.ForwardSetState(SCE_AVE_DEFAULT);
65ec6247 RD	130	}
65ec6247 RD	131	}
9e730a78 RD	132
	133	// Determine if a new state should be entered.
	134	if (sc.state == SCE_AVE_DEFAULT) {
	135	if (IsADigit(sc.ch) \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
	136	sc.SetState(SCE_AVE_NUMBER);
	137	} else if (IsAWordStart(sc.ch)) {
	138	sc.SetState(SCE_AVE_IDENTIFIER);
	139	} else if (sc.Match('\"')) {
	140	sc.SetState(SCE_AVE_STRING);
	141	} else if (sc.Match('\'')) {
	142	sc.SetState(SCE_AVE_COMMENT);
	143	sc.Forward();
	144	} else if (isAveOperator(static_cast<char>(sc.ch))) {
	145	sc.SetState(SCE_AVE_OPERATOR);
	146	} else if (sc.Match('#')) {
	147	sc.SetState(SCE_AVE_ENUM);
	148	sc.Forward();
65ec6247 RD	149	}
65ec6247 RD	150	}
9e730a78 RD	151	}
	152	sc.Complete();
	153	}
65ec6247	154
9e730a78 RD	155	static void FoldAveDoc(unsigned int startPos, int length, int /* initStyle /, WordList [],
	156	Accessor &styler) {
	157	unsigned int lengthDoc = startPos + length;
	158	int visibleChars = 0;
	159	int lineCurrent = styler.GetLine(startPos);
	160	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	161	int levelCurrent = levelPrev;
	162	char chNext = static_cast<char>(tolower(styler[startPos]));
	163	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	164	int styleNext = styler.StyleAt(startPos);
	165	char s[10];
65ec6247	166
9e730a78 RD	167	for (unsigned int i = startPos; i < lengthDoc; i++) {
	168	char ch = static_cast<char>(tolower(chNext));
	169	chNext = static_cast<char>(tolower(styler.SafeGetCharAt(i + 1)));
	170	int style = styleNext;
	171	styleNext = styler.StyleAt(i + 1);
	172	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
	173	if (style == SCE_AVE_WORD) {
	174	if (ch == 't' \|\| ch == 'f' \|\| ch == 'w' \|\| ch == 'e') {
	175	for (unsigned int j = 0; j < 6; j++) {
	176	if (!iswordchar(styler[i + j])) {
	177	break;
65ec6247	178	}
9e730a78 RD	179	s[j] = static_cast<char>(tolower(styler[i + j]));
	180	s[j + 1] = '\0';
	181	}
65ec6247	182
9e730a78 RD	183	if ((strcmp(s, "then") == 0) \|\| (strcmp(s, "for") == 0) \|\| (strcmp(s, "while") == 0)) {
9e730a78 RD	184	levelCurrent++;
65ec6247	185	}
9e730a78 RD	186	if ((strcmp(s, "end") == 0)) {
9e730a78 RD	187	levelCurrent--;
65ec6247 RD	188	}
65ec6247 RD	189	}
9e730a78 RD	190	} else if (style == SCE_AVE_OPERATOR) {
	191	if (ch == '{' \|\| ch == '(') {
	192	levelCurrent++;
	193	} else if (ch == '}' \|\| ch == ')') {
	194	levelCurrent--;
	195	}
65ec6247 RD	196	}
65ec6247 RD	197
9e730a78 RD	198	if (atEOL) {
	199	int lev = levelPrev;
	200	if (visibleChars == 0 && foldCompact) {
	201	lev \|= SC_FOLDLEVELWHITEFLAG;
	202	}
	203	if ((levelCurrent > levelPrev) && (visibleChars > 0)) {
	204	lev \|= SC_FOLDLEVELHEADERFLAG;
	205	}
	206	if (lev != styler.LevelAt(lineCurrent)) {
	207	styler.SetLevel(lineCurrent, lev);
	208	}
	209	lineCurrent++;
	210	levelPrev = levelCurrent;
	211	visibleChars = 0;
	212	}
	213	if (!isspacechar(ch)) {
	214	visibleChars++;
	215	}
65ec6247	216	}
65ec6247	217	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
65ec6247	218
9e730a78 RD	219	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
9e730a78 RD	220	styler.SetLevel(lineCurrent, levelPrev \| flagsNext);
65ec6247 RD	221	}
65ec6247 RD	222
9e730a78 RD	223	LexerModule lmAVE(SCLEX_AVE, ColouriseAveDoc, "ave", FoldAveDoc);
9e730a78 RD	224