src/stc/scintilla/lexers/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 <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.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 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 (isascii(ch) && 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) || (strcmp(s, "elseif") == 0)) {
					// Normally "elseif" and "then" will be on the same line and will cancel
					// each other out.  // As implemented, this does not support fold.at.else.
					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
	1	// SciTE - Scintilla based Text Editor
	2	/** @file LexAVE.cxx
	3	** Lexer for Avenue.
	4	**
	5	** Written by Alexey Yutkin <yutkin@geol.msu.ru>.
	6	**/
	7	// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
	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 <stdio.h>
	13	#include <stdarg.h>
	14	#include <assert.h>
	15	#include <ctype.h>
	16
	17	#include "ILexer.h"
	18	#include "Scintilla.h"
	19	#include "SciLexer.h"
	20
	21	#include "WordList.h"
	22	#include "LexAccessor.h"
	23	#include "Accessor.h"
	24	#include "StyleContext.h"
	25	#include "CharacterSet.h"
	26	#include "LexerModule.h"
	27
	28	#ifdef SCI_NAMESPACE
	29	using namespace Scintilla;
	30	#endif
	31
	32
	33	static inline bool IsAWordChar(const int ch) {
	34	return (ch < 0x80) && (isalnum(ch) \|\| ch == '.' \|\| ch == '_');
	35	}
	36	static inline bool IsEnumChar(const int ch) {
	37	return (ch < 0x80) && (isalnum(ch)\|\| ch == '_');
	38	}
	39	static inline bool IsANumberChar(const int ch) {
	40	return (ch < 0x80) && (isalnum(ch) \|\| ch == '.' );
	41	}
	42
	43	inline bool IsAWordStart(const int ch) {
	44	return (ch < 0x80) && (isalnum(ch) \|\| ch == '_');
	45	}
	46
	47	inline bool isAveOperator(char ch) {
	48	if (isascii(ch) && isalnum(ch))
	49	return false;
	50	// '.' left out as it is used to make up numbers
	51	if (ch == '*' \|\| ch == '/' \|\| ch == '-' \|\| ch == '+' \|\|
	52	ch == '(' \|\| ch == ')' \|\| ch == '=' \|\|
	53	ch == '{' \|\| ch == '}' \|\|
	54	ch == '[' \|\| ch == ']' \|\| ch == ';' \|\|
	55	ch == '<' \|\| ch == '>' \|\| ch == ',' \|\|
	56	ch == '.' )
	57	return true;
	58	return false;
	59	}
	60
	61	static void ColouriseAveDoc(
	62	unsigned int startPos,
	63	int length,
	64	int initStyle,
	65	WordList *keywordlists[],
	66	Accessor &styler) {
	67
	68	WordList &keywords = *keywordlists[0];
	69	WordList &keywords2 = *keywordlists[1];
	70	WordList &keywords3 = *keywordlists[2];
	71	WordList &keywords4 = *keywordlists[3];
	72	WordList &keywords5 = *keywordlists[4];
	73	WordList &keywords6 = *keywordlists[5];
	74
	75	// Do not leak onto next line
	76	if (initStyle == SCE_AVE_STRINGEOL) {
	77	initStyle = SCE_AVE_DEFAULT;
	78	}
	79
	80	StyleContext sc(startPos, length, initStyle, styler);
	81
	82	for (; sc.More(); sc.Forward()) {
	83	if (sc.atLineEnd) {
	84	// Update the line state, so it can be seen by next line
	85	int currentLine = styler.GetLine(sc.currentPos);
	86	styler.SetLineState(currentLine, 0);
	87	}
	88	if (sc.atLineStart && (sc.state == SCE_AVE_STRING)) {
	89	// Prevent SCE_AVE_STRINGEOL from leaking back to previous line
	90	sc.SetState(SCE_AVE_STRING);
	91	}
	92
	93
	94	// Determine if the current state should terminate.
	95	if (sc.state == SCE_AVE_OPERATOR) {
	96	sc.SetState(SCE_AVE_DEFAULT);
	97	} else if (sc.state == SCE_AVE_NUMBER) {
	98	if (!IsANumberChar(sc.ch)) {
	99	sc.SetState(SCE_AVE_DEFAULT);
	100	}
	101	} else if (sc.state == SCE_AVE_ENUM) {
	102	if (!IsEnumChar(sc.ch)) {
	103	sc.SetState(SCE_AVE_DEFAULT);
	104	}
	105	} else if (sc.state == SCE_AVE_IDENTIFIER) {
	106	if (!IsAWordChar(sc.ch) \|\| (sc.ch == '.')) {
	107	char s[100];
	108	//sc.GetCurrent(s, sizeof(s));
	109	sc.GetCurrentLowered(s, sizeof(s));
	110	if (keywords.InList(s)) {
	111	sc.ChangeState(SCE_AVE_WORD);
	112	} else if (keywords2.InList(s)) {
	113	sc.ChangeState(SCE_AVE_WORD2);
	114	} else if (keywords3.InList(s)) {
	115	sc.ChangeState(SCE_AVE_WORD3);
	116	} else if (keywords4.InList(s)) {
	117	sc.ChangeState(SCE_AVE_WORD4);
	118	} else if (keywords5.InList(s)) {
	119	sc.ChangeState(SCE_AVE_WORD5);
	120	} else if (keywords6.InList(s)) {
	121	sc.ChangeState(SCE_AVE_WORD6);
	122	}
	123	sc.SetState(SCE_AVE_DEFAULT);
	124	}
	125	} else if (sc.state == SCE_AVE_COMMENT) {
	126	if (sc.atLineEnd) {
	127	sc.SetState(SCE_AVE_DEFAULT);
	128	}
	129	} else if (sc.state == SCE_AVE_STRING) {
	130	if (sc.ch == '\"') {
	131	sc.ForwardSetState(SCE_AVE_DEFAULT);
	132	} else if (sc.atLineEnd) {
	133	sc.ChangeState(SCE_AVE_STRINGEOL);
	134	sc.ForwardSetState(SCE_AVE_DEFAULT);
	135	}
	136	}
	137
	138	// Determine if a new state should be entered.
	139	if (sc.state == SCE_AVE_DEFAULT) {
	140	if (IsADigit(sc.ch) \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
	141	sc.SetState(SCE_AVE_NUMBER);
	142	} else if (IsAWordStart(sc.ch)) {
	143	sc.SetState(SCE_AVE_IDENTIFIER);
	144	} else if (sc.Match('\"')) {
	145	sc.SetState(SCE_AVE_STRING);
	146	} else if (sc.Match('\'')) {
	147	sc.SetState(SCE_AVE_COMMENT);
	148	sc.Forward();
	149	} else if (isAveOperator(static_cast<char>(sc.ch))) {
	150	sc.SetState(SCE_AVE_OPERATOR);
	151	} else if (sc.Match('#')) {
	152	sc.SetState(SCE_AVE_ENUM);
	153	sc.Forward();
	154	}
	155	}
	156	}
	157	sc.Complete();
	158	}
	159
	160	static void FoldAveDoc(unsigned int startPos, int length, int /* initStyle /, WordList [],
	161	Accessor &styler) {
	162	unsigned int lengthDoc = startPos + length;
	163	int visibleChars = 0;
	164	int lineCurrent = styler.GetLine(startPos);
	165	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	166	int levelCurrent = levelPrev;
	167	char chNext = static_cast<char>(tolower(styler[startPos]));
	168	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	169	int styleNext = styler.StyleAt(startPos);
	170	char s[10];
	171
	172	for (unsigned int i = startPos; i < lengthDoc; i++) {
	173	char ch = static_cast<char>(tolower(chNext));
	174	chNext = static_cast<char>(tolower(styler.SafeGetCharAt(i + 1)));
	175	int style = styleNext;
	176	styleNext = styler.StyleAt(i + 1);
	177	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
	178	if (style == SCE_AVE_WORD) {
	179	if (ch == 't' \|\| ch == 'f' \|\| ch == 'w' \|\| ch == 'e') {
	180	for (unsigned int j = 0; j < 6; j++) {
	181	if (!iswordchar(styler[i + j])) {
	182	break;
	183	}
	184	s[j] = static_cast<char>(tolower(styler[i + j]));
	185	s[j + 1] = '\0';
	186	}
	187
	188	if ((strcmp(s, "then") == 0) \|\| (strcmp(s, "for") == 0) \|\| (strcmp(s, "while") == 0)) {
	189	levelCurrent++;
	190	}
	191	if ((strcmp(s, "end") == 0) \|\| (strcmp(s, "elseif") == 0)) {
	192	// Normally "elseif" and "then" will be on the same line and will cancel
	193	// each other out. // As implemented, this does not support fold.at.else.
	194	levelCurrent--;
	195	}
	196	}
	197	} else if (style == SCE_AVE_OPERATOR) {
	198	if (ch == '{' \|\| ch == '(') {
	199	levelCurrent++;
	200	} else if (ch == '}' \|\| ch == ')') {
	201	levelCurrent--;
	202	}
	203	}
	204
	205	if (atEOL) {
	206	int lev = levelPrev;
	207	if (visibleChars == 0 && foldCompact) {
	208	lev \|= SC_FOLDLEVELWHITEFLAG;
	209	}
	210	if ((levelCurrent > levelPrev) && (visibleChars > 0)) {
	211	lev \|= SC_FOLDLEVELHEADERFLAG;
	212	}
	213	if (lev != styler.LevelAt(lineCurrent)) {
	214	styler.SetLevel(lineCurrent, lev);
	215	}
	216	lineCurrent++;
	217	levelPrev = levelCurrent;
	218	visibleChars = 0;
	219	}
	220	if (!isspacechar(ch)) {
	221	visibleChars++;
	222	}
	223	}
	224	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
	225
	226	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	227	styler.SetLevel(lineCurrent, levelPrev \| flagsNext);
	228	}
	229
	230	LexerModule lmAVE(SCLEX_AVE, ColouriseAveDoc, "ave", FoldAveDoc);
	231