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

// Scintilla source code edit control
/** @file LexPowerShell.cxx
 ** Lexer for PowerShell scripts.
 **/
// Copyright 2008 by Tim Gerundt <tim@gerundt.de>
// 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

// Extended to accept accented characters
static inline bool IsAWordChar(int ch) {
	return ch >= 0x80 || isalnum(ch) || ch == '-' || ch == '_';
}

static void ColourisePowerShellDoc(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];

	styler.StartAt(startPos);

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

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

		if (sc.state == SCE_POWERSHELL_COMMENT) {
			if (sc.atLineEnd) {
				sc.SetState(SCE_POWERSHELL_DEFAULT);
			}
		} else if (sc.state == SCE_POWERSHELL_COMMENTSTREAM) {
			if (sc.ch == '>' && sc.chPrev == '#') {
				sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
			}
		} else if (sc.state == SCE_POWERSHELL_STRING) {
			// This is a doubles quotes string
			if (sc.ch == '\"') {
				sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
			}
		} else if (sc.state == SCE_POWERSHELL_CHARACTER) {
			// This is a single quote string
			if (sc.ch == '\'') {
				sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
			}
		} else if (sc.state == SCE_POWERSHELL_NUMBER) {
			if (!IsADigit(sc.ch)) {
				sc.SetState(SCE_POWERSHELL_DEFAULT);
			}
		} else if (sc.state == SCE_POWERSHELL_VARIABLE) {
			if (!IsAWordChar(sc.ch)) {
				sc.SetState(SCE_POWERSHELL_DEFAULT);
			}
		} else if (sc.state == SCE_POWERSHELL_OPERATOR) {
			if (!isoperator(static_cast<char>(sc.ch))) {
				sc.SetState(SCE_POWERSHELL_DEFAULT);
			}
		} else if (sc.state == SCE_POWERSHELL_IDENTIFIER) {
			if (!IsAWordChar(sc.ch)) {
				char s[100];
				sc.GetCurrentLowered(s, sizeof(s));

				if (keywords.InList(s)) {
					sc.ChangeState(SCE_POWERSHELL_KEYWORD);
				} else if (keywords2.InList(s)) {
					sc.ChangeState(SCE_POWERSHELL_CMDLET);
				} else if (keywords3.InList(s)) {
					sc.ChangeState(SCE_POWERSHELL_ALIAS);
				} else if (keywords4.InList(s)) {
					sc.ChangeState(SCE_POWERSHELL_FUNCTION);
				} else if (keywords5.InList(s)) {
					sc.ChangeState(SCE_POWERSHELL_USER1);
				}
				sc.SetState(SCE_POWERSHELL_DEFAULT);
			}
		}

		// Determine if a new state should be entered.
		if (sc.state == SCE_POWERSHELL_DEFAULT) {
			if (sc.ch == '#') {
				sc.SetState(SCE_POWERSHELL_COMMENT);
			} else if (sc.ch == '<' && sc.chNext == '#') {
				sc.SetState(SCE_POWERSHELL_COMMENTSTREAM);
			} else if (sc.ch == '\"') {
				sc.SetState(SCE_POWERSHELL_STRING);
			} else if (sc.ch == '\'') {
				sc.SetState(SCE_POWERSHELL_CHARACTER);
			} else if (sc.ch == '$') {
				sc.SetState(SCE_POWERSHELL_VARIABLE);
			} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
				sc.SetState(SCE_POWERSHELL_NUMBER);
			} else if (isoperator(static_cast<char>(sc.ch))) {
				sc.SetState(SCE_POWERSHELL_OPERATOR);
			} else if (IsAWordChar(sc.ch)) {
				sc.SetState(SCE_POWERSHELL_IDENTIFIER);
			}
		}
	}
	sc.Complete();
}

// Store both the current line's fold level and the next lines in the
// level store to make it easy to pick up with each increment
// and to make it possible to fiddle the current level for "} else {".
static void FoldPowerShellDoc(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 (style == SCE_POWERSHELL_OPERATOR) {
			if (ch == '{') {
				// Measure the minimum before a '{' to allow
				// folding on "} else {"
				if (levelMinCurrent > levelNext) {
					levelMinCurrent = levelNext;
				}
				levelNext++;
			} else if (ch == '}') {
				levelNext--;
			}
		} else if (foldComment && style == SCE_POWERSHELL_COMMENTSTREAM) {
			if (stylePrev != SCE_POWERSHELL_COMMENTSTREAM) {
				levelNext++;
			} else if (styleNext != SCE_POWERSHELL_COMMENTSTREAM) {
				levelNext--;
			}
		}
		if (!IsASpace(ch))
			visibleChars++;
		if (atEOL || (i == endPos-1)) {
			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;
		}
	}
}

static const char * const powershellWordLists[] = {
	"Commands",
	"Cmdlets",
	"Aliases",
	"Functions",
	"User1",
	0
};

LexerModule lmPowerShell(SCLEX_POWERSHELL, ColourisePowerShellDoc, "powershell", FoldPowerShellDoc, powershellWordLists);
Commit	Line	Data
9e96e16f RD	1	// Scintilla source code edit control
	2	/** @file LexPowerShell.cxx
	3	** Lexer for PowerShell scripts.
	4	**/
	5	// Copyright 2008 by Tim Gerundt <tim@gerundt.de>
	6	// The License.txt file describes the conditions under which this software may be distributed.
	7
	8	#include <stdlib.h>
	9	#include <string.h>
9e96e16f RD	10	#include <stdio.h>
9e96e16f RD	11	#include <stdarg.h>
1dcf666d RD	12	#include <assert.h>
1dcf666d RD	13	#include <ctype.h>
9e96e16f	14
1dcf666d RD	15	#include "ILexer.h"
	16	#include "Scintilla.h"
	17	#include "SciLexer.h"
9e96e16f	18
1dcf666d RD	19	#include "WordList.h"
1dcf666d RD	20	#include "LexAccessor.h"
9e96e16f RD	21	#include "Accessor.h"
9e96e16f RD	22	#include "StyleContext.h"
1dcf666d RD	23	#include "CharacterSet.h"
1dcf666d RD	24	#include "LexerModule.h"
9e96e16f RD	25
	26	#ifdef SCI_NAMESPACE
	27	using namespace Scintilla;
	28	#endif
	29
	30	// Extended to accept accented characters
	31	static inline bool IsAWordChar(int ch) {
1dcf666d	32	return ch >= 0x80 \|\| isalnum(ch) \|\| ch == '-' \|\| ch == '_';
9e96e16f RD	33	}
	34
	35	static void ColourisePowerShellDoc(unsigned int startPos, int length, int initStyle,
	36	WordList *keywordlists[], Accessor &styler) {
	37
	38	WordList &keywords = *keywordlists[0];
	39	WordList &keywords2 = *keywordlists[1];
	40	WordList &keywords3 = *keywordlists[2];
1dcf666d RD	41	WordList &keywords4 = *keywordlists[3];
1dcf666d RD	42	WordList &keywords5 = *keywordlists[4];
9e96e16f RD	43
	44	styler.StartAt(startPos);
	45
	46	StyleContext sc(startPos, length, initStyle, styler);
	47
	48	for (; sc.More(); sc.Forward()) {
	49
	50	if (sc.state == SCE_POWERSHELL_COMMENT) {
	51	if (sc.atLineEnd) {
	52	sc.SetState(SCE_POWERSHELL_DEFAULT);
	53	}
1dcf666d RD	54	} else if (sc.state == SCE_POWERSHELL_COMMENTSTREAM) {
	55	if (sc.ch == '>' && sc.chPrev == '#') {
	56	sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
	57	}
9e96e16f RD	58	} else if (sc.state == SCE_POWERSHELL_STRING) {
	59	// This is a doubles quotes string
	60	if (sc.ch == '\"') {
	61	sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
	62	}
	63	} else if (sc.state == SCE_POWERSHELL_CHARACTER) {
	64	// This is a single quote string
	65	if (sc.ch == '\'') {
	66	sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
	67	}
	68	} else if (sc.state == SCE_POWERSHELL_NUMBER) {
	69	if (!IsADigit(sc.ch)) {
	70	sc.SetState(SCE_POWERSHELL_DEFAULT);
	71	}
	72	} else if (sc.state == SCE_POWERSHELL_VARIABLE) {
	73	if (!IsAWordChar(sc.ch)) {
	74	sc.SetState(SCE_POWERSHELL_DEFAULT);
	75	}
	76	} else if (sc.state == SCE_POWERSHELL_OPERATOR) {
	77	if (!isoperator(static_cast<char>(sc.ch))) {
	78	sc.SetState(SCE_POWERSHELL_DEFAULT);
	79	}
	80	} else if (sc.state == SCE_POWERSHELL_IDENTIFIER) {
	81	if (!IsAWordChar(sc.ch)) {
	82	char s[100];
	83	sc.GetCurrentLowered(s, sizeof(s));
	84
	85	if (keywords.InList(s)) {
	86	sc.ChangeState(SCE_POWERSHELL_KEYWORD);
	87	} else if (keywords2.InList(s)) {
	88	sc.ChangeState(SCE_POWERSHELL_CMDLET);
	89	} else if (keywords3.InList(s)) {
	90	sc.ChangeState(SCE_POWERSHELL_ALIAS);
1dcf666d RD	91	} else if (keywords4.InList(s)) {
	92	sc.ChangeState(SCE_POWERSHELL_FUNCTION);
	93	} else if (keywords5.InList(s)) {
	94	sc.ChangeState(SCE_POWERSHELL_USER1);
9e96e16f RD	95	}
	96	sc.SetState(SCE_POWERSHELL_DEFAULT);
	97	}
	98	}
	99
	100	// Determine if a new state should be entered.
	101	if (sc.state == SCE_POWERSHELL_DEFAULT) {
	102	if (sc.ch == '#') {
	103	sc.SetState(SCE_POWERSHELL_COMMENT);
1dcf666d RD	104	} else if (sc.ch == '<' && sc.chNext == '#') {
1dcf666d RD	105	sc.SetState(SCE_POWERSHELL_COMMENTSTREAM);
9e96e16f RD	106	} else if (sc.ch == '\"') {
	107	sc.SetState(SCE_POWERSHELL_STRING);
	108	} else if (sc.ch == '\'') {
	109	sc.SetState(SCE_POWERSHELL_CHARACTER);
	110	} else if (sc.ch == '$') {
	111	sc.SetState(SCE_POWERSHELL_VARIABLE);
	112	} else if (IsADigit(sc.ch) \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
	113	sc.SetState(SCE_POWERSHELL_NUMBER);
	114	} else if (isoperator(static_cast<char>(sc.ch))) {
	115	sc.SetState(SCE_POWERSHELL_OPERATOR);
	116	} else if (IsAWordChar(sc.ch)) {
	117	sc.SetState(SCE_POWERSHELL_IDENTIFIER);
	118	}
	119	}
	120	}
	121	sc.Complete();
	122	}
	123
	124	// Store both the current line's fold level and the next lines in the
	125	// level store to make it easy to pick up with each increment
	126	// and to make it possible to fiddle the current level for "} else {".
1dcf666d	127	static void FoldPowerShellDoc(unsigned int startPos, int length, int initStyle,
9e96e16f	128	WordList *[], Accessor &styler) {
1dcf666d	129	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
9e96e16f RD	130	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	131	bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
	132	unsigned int endPos = startPos + length;
	133	int visibleChars = 0;
	134	int lineCurrent = styler.GetLine(startPos);
	135	int levelCurrent = SC_FOLDLEVELBASE;
	136	if (lineCurrent > 0)
	137	levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
	138	int levelMinCurrent = levelCurrent;
	139	int levelNext = levelCurrent;
	140	char chNext = styler[startPos];
	141	int styleNext = styler.StyleAt(startPos);
1dcf666d	142	int style = initStyle;
9e96e16f RD	143	for (unsigned int i = startPos; i < endPos; i++) {
	144	char ch = chNext;
	145	chNext = styler.SafeGetCharAt(i + 1);
1dcf666d RD	146	int stylePrev = style;
1dcf666d RD	147	style = styleNext;
9e96e16f RD	148	styleNext = styler.StyleAt(i + 1);
	149	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
	150	if (style == SCE_POWERSHELL_OPERATOR) {
	151	if (ch == '{') {
	152	// Measure the minimum before a '{' to allow
	153	// folding on "} else {"
	154	if (levelMinCurrent > levelNext) {
	155	levelMinCurrent = levelNext;
	156	}
	157	levelNext++;
	158	} else if (ch == '}') {
	159	levelNext--;
	160	}
1dcf666d RD	161	} else if (foldComment && style == SCE_POWERSHELL_COMMENTSTREAM) {
	162	if (stylePrev != SCE_POWERSHELL_COMMENTSTREAM) {
	163	levelNext++;
	164	} else if (styleNext != SCE_POWERSHELL_COMMENTSTREAM) {
	165	levelNext--;
	166	}
9e96e16f RD	167	}
	168	if (!IsASpace(ch))
	169	visibleChars++;
	170	if (atEOL \|\| (i == endPos-1)) {
	171	int levelUse = levelCurrent;
	172	if (foldAtElse) {
	173	levelUse = levelMinCurrent;
	174	}
	175	int lev = levelUse \| levelNext << 16;
	176	if (visibleChars == 0 && foldCompact)
	177	lev \|= SC_FOLDLEVELWHITEFLAG;
	178	if (levelUse < levelNext)
	179	lev \|= SC_FOLDLEVELHEADERFLAG;
	180	if (lev != styler.LevelAt(lineCurrent)) {
	181	styler.SetLevel(lineCurrent, lev);
	182	}
	183	lineCurrent++;
	184	levelCurrent = levelNext;
	185	levelMinCurrent = levelCurrent;
	186	visibleChars = 0;
	187	}
	188	}
	189	}
	190
	191	static const char * const powershellWordLists[] = {
	192	"Commands",
	193	"Cmdlets",
	194	"Aliases",
1dcf666d RD	195	"Functions",
1dcf666d RD	196	"User1",
9e96e16f RD	197	0
	198	};
	199
	200	LexerModule lmPowerShell(SCLEX_POWERSHELL, ColourisePowerShellDoc, "powershell", FoldPowerShellDoc, powershellWordLists);
	201