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

// Scintilla source code edit control
/** @file LexPS.cxx
 ** Lexer for PostScript
 **
 ** Written by Nigel Hathaway <nigel@bprj.co.uk>.
 ** 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 IsASelfDelimitingChar(const int ch) {
    return (ch == '[' || ch == ']' || ch == '{' || ch == '}' ||
            ch == '/' || ch == '<' || ch == '>' ||
            ch == '(' || ch == ')' || ch == '%');
}

static inline bool IsAWhitespaceChar(const int ch) {
    return (ch == ' '  || ch == '\t' || ch == '\r' ||
            ch == '\n' || ch == '\f' || ch == '\0');
}

static bool IsABaseNDigit(const int ch, const int base) {
    int maxdig = '9';
    int letterext = -1;

    if (base <= 10)
        maxdig = '0' + base - 1;
    else
        letterext = base - 11;

    return ((ch >= '0' && ch <= maxdig) ||
            (ch >= 'A' && ch <= ('A' + letterext)) ||
            (ch >= 'a' && ch <= ('a' + letterext)));
}

static inline bool IsABase85Char(const int ch) {
    return ((ch >= '!' && ch <= 'u') || ch == 'z');
}

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

    WordList &keywords1 = *keywordlists[0];
    WordList &keywords2 = *keywordlists[1];
    WordList &keywords3 = *keywordlists[2];
    WordList &keywords4 = *keywordlists[3];
    WordList &keywords5 = *keywordlists[4];

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

    bool tokenizing = styler.GetPropertyInt("ps.tokenize") != 0;
    int pslevel = styler.GetPropertyInt("ps.level", 3);
    int lineCurrent = styler.GetLine(startPos);
    int nestTextCurrent = 0;
    if (lineCurrent > 0 && initStyle == SCE_PS_TEXT)
        nestTextCurrent = styler.GetLineState(lineCurrent - 1);
    int numRadix = 0;
    bool numHasPoint = false;
    bool numHasExponent = false;
    bool numHasSign = false;

    // Clear out existing tokenization
    if (tokenizing && length > 0) {
        styler.StartAt(startPos, static_cast<char>(INDIC2_MASK));
        styler.ColourTo(startPos + length-1, 0);
        styler.Flush();
        styler.StartAt(startPos);
        styler.StartSegment(startPos);
    }

    for (; sc.More(); sc.Forward()) {
        if (sc.atLineStart)
            lineCurrent = styler.GetLine(sc.currentPos);

        // Determine if the current state should terminate.
        if (sc.state == SCE_PS_COMMENT || sc.state == SCE_PS_DSC_VALUE) {
            if (sc.atLineEnd) {
                sc.SetState(SCE_C_DEFAULT);
            }
        } else if (sc.state == SCE_PS_DSC_COMMENT) {
            if (sc.ch == ':') {
                sc.Forward();
                if (!sc.atLineEnd)
                    sc.SetState(SCE_PS_DSC_VALUE);
                else
                    sc.SetState(SCE_C_DEFAULT);
            } else if (sc.atLineEnd) {
                sc.SetState(SCE_C_DEFAULT);
            } else if (IsAWhitespaceChar(sc.ch) && sc.ch != '\r') {
                sc.ChangeState(SCE_PS_COMMENT);
            }
        } else if (sc.state == SCE_PS_NUMBER) {
            if (IsASelfDelimitingChar(sc.ch) || IsAWhitespaceChar(sc.ch)) {
                if ((sc.chPrev == '+' || sc.chPrev == '-' ||
                     sc.chPrev == 'E' || sc.chPrev == 'e') && numRadix == 0)
                    sc.ChangeState(SCE_PS_NAME);
                sc.SetState(SCE_C_DEFAULT);
            } else if (sc.ch == '#') {
                if (numHasPoint || numHasExponent || numHasSign || numRadix != 0) {
                    sc.ChangeState(SCE_PS_NAME);
                } else {
                    char szradix[5];
                    sc.GetCurrent(szradix, 4);
                    numRadix = atoi(szradix);
                    if (numRadix < 2 || numRadix > 36)
                        sc.ChangeState(SCE_PS_NAME);
                }
            } else if ((sc.ch == 'E' || sc.ch == 'e') && numRadix == 0) {
                if (numHasExponent) {
                    sc.ChangeState(SCE_PS_NAME);
                } else {
                    numHasExponent = true;
                    if (sc.chNext == '+' || sc.chNext == '-')
                        sc.Forward();
                }
            } else if (sc.ch == '.') {
                if (numHasPoint || numHasExponent || numRadix != 0) {
                    sc.ChangeState(SCE_PS_NAME);
                } else {
                    numHasPoint = true;
                }
            } else if (numRadix == 0) {
                if (!IsABaseNDigit(sc.ch, 10))
                    sc.ChangeState(SCE_PS_NAME);
            } else {
                if (!IsABaseNDigit(sc.ch, numRadix))
                    sc.ChangeState(SCE_PS_NAME);
            }
        } else if (sc.state == SCE_PS_NAME || sc.state == SCE_PS_KEYWORD) {
            if (IsASelfDelimitingChar(sc.ch) || IsAWhitespaceChar(sc.ch)) {
                char s[100];
                sc.GetCurrent(s, sizeof(s));
                if ((pslevel >= 1 && keywords1.InList(s)) ||
                    (pslevel >= 2 && keywords2.InList(s)) ||
                    (pslevel >= 3 && keywords3.InList(s)) ||
                    keywords4.InList(s) || keywords5.InList(s)) {
                    sc.ChangeState(SCE_PS_KEYWORD);
                }
                sc.SetState(SCE_C_DEFAULT);
            }
        } else if (sc.state == SCE_PS_LITERAL || sc.state == SCE_PS_IMMEVAL) {
            if (IsASelfDelimitingChar(sc.ch) || IsAWhitespaceChar(sc.ch))
                sc.SetState(SCE_C_DEFAULT);
        } else if (sc.state == SCE_PS_PAREN_ARRAY || sc.state == SCE_PS_PAREN_DICT ||
                   sc.state == SCE_PS_PAREN_PROC) {
            sc.SetState(SCE_C_DEFAULT);
        } else if (sc.state == SCE_PS_TEXT) {
            if (sc.ch == '(') {
                nestTextCurrent++;
            } else if (sc.ch == ')') {
                if (--nestTextCurrent == 0)
                   sc.ForwardSetState(SCE_PS_DEFAULT);
            } else if (sc.ch == '\\') {
                sc.Forward();
            }
        } else if (sc.state == SCE_PS_HEXSTRING) {
            if (sc.ch == '>') {
                sc.ForwardSetState(SCE_PS_DEFAULT);
            } else if (!IsABaseNDigit(sc.ch, 16) && !IsAWhitespaceChar(sc.ch)) {
                sc.SetState(SCE_PS_HEXSTRING);
                styler.ColourTo(sc.currentPos, SCE_PS_BADSTRINGCHAR);
            }
        } else if (sc.state == SCE_PS_BASE85STRING) {
            if (sc.Match('~', '>')) {
                sc.Forward();
                sc.ForwardSetState(SCE_PS_DEFAULT);
            } else if (!IsABase85Char(sc.ch) && !IsAWhitespaceChar(sc.ch)) {
                sc.SetState(SCE_PS_BASE85STRING);
                styler.ColourTo(sc.currentPos, SCE_PS_BADSTRINGCHAR);
            }
        }

        // Determine if a new state should be entered.
        if (sc.state == SCE_C_DEFAULT) {
            unsigned int tokenpos = sc.currentPos;

            if (sc.ch == '[' || sc.ch == ']') {
                sc.SetState(SCE_PS_PAREN_ARRAY);
            } else if (sc.ch == '{' || sc.ch == '}') {
                sc.SetState(SCE_PS_PAREN_PROC);
            } else if (sc.ch == '/') {
                if (sc.chNext == '/') {
                    sc.SetState(SCE_PS_IMMEVAL);
                    sc.Forward();
                } else {
                    sc.SetState(SCE_PS_LITERAL);
                }
            } else if (sc.ch == '<') {
                if (sc.chNext == '<') {
                    sc.SetState(SCE_PS_PAREN_DICT);
                    sc.Forward();
                } else if (sc.chNext == '~') {
                    sc.SetState(SCE_PS_BASE85STRING);
                    sc.Forward();
                } else {
                    sc.SetState(SCE_PS_HEXSTRING);
                }
            } else if (sc.ch == '>' && sc.chNext == '>') {
                    sc.SetState(SCE_PS_PAREN_DICT);
                    sc.Forward();
            } else if (sc.ch == '>' || sc.ch == ')') {
                sc.SetState(SCE_C_DEFAULT);
                styler.ColourTo(sc.currentPos, SCE_PS_BADSTRINGCHAR);
            } else if (sc.ch == '(') {
                sc.SetState(SCE_PS_TEXT);
                nestTextCurrent = 1;
            } else if (sc.ch == '%') {
                if (sc.chNext == '%' && sc.atLineStart) {
                    sc.SetState(SCE_PS_DSC_COMMENT);
                    sc.Forward();
                    if (sc.chNext == '+') {
                        sc.Forward();
                        sc.ForwardSetState(SCE_PS_DSC_VALUE);
                    }
                } else {
                    sc.SetState(SCE_PS_COMMENT);
                }
            } else if ((sc.ch == '+' || sc.ch == '-' || sc.ch == '.') &&
                       IsABaseNDigit(sc.chNext, 10)) {
                sc.SetState(SCE_PS_NUMBER);
                numRadix = 0;
                numHasPoint = (sc.ch == '.');
                numHasExponent = false;
                numHasSign = (sc.ch == '+' || sc.ch == '-');
            } else if ((sc.ch == '+' || sc.ch == '-') && sc.chNext == '.' &&
                       IsABaseNDigit(sc.GetRelative(2), 10)) {
                sc.SetState(SCE_PS_NUMBER);
                numRadix = 0;
                numHasPoint = false;
                numHasExponent = false;
                numHasSign = true;
            } else if (IsABaseNDigit(sc.ch, 10)) {
                sc.SetState(SCE_PS_NUMBER);
                numRadix = 0;
                numHasPoint = false;
                numHasExponent = false;
                numHasSign = false;
            } else if (!IsAWhitespaceChar(sc.ch)) {
                sc.SetState(SCE_PS_NAME);
            }

            // Mark the start of tokens
            if (tokenizing && sc.state != SCE_C_DEFAULT && sc.state != SCE_PS_COMMENT &&
                sc.state != SCE_PS_DSC_COMMENT && sc.state != SCE_PS_DSC_VALUE) {
                styler.Flush();
                styler.StartAt(tokenpos, static_cast<char>(INDIC2_MASK));
                styler.ColourTo(tokenpos, INDIC2_MASK);
                styler.Flush();
                styler.StartAt(tokenpos);
                styler.StartSegment(tokenpos);
            }
        }

        if (sc.atLineEnd)
            styler.SetLineState(lineCurrent, nestTextCurrent);
    }

    sc.Complete();
}

static void FoldPSDoc(unsigned int startPos, int length, int, WordList *[],
                       Accessor &styler) {
    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;
    for (unsigned int i = startPos; i < endPos; i++) {
        char ch = chNext;
        chNext = styler.SafeGetCharAt(i + 1);
        style = styleNext;
        styleNext = styler.StyleAt(i + 1);
        bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');  //mac??
        if ((style & 31) == SCE_PS_PAREN_PROC) {
            if (ch == '{') {
                // Measure the minimum before a '{' to allow
                // folding on "} {"
                if (levelMinCurrent > levelNext) {
                    levelMinCurrent = levelNext;
                }
                levelNext++;
            } else if (ch == '}') {
                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 (!isspacechar(ch))
            visibleChars++;
    }
}

static const char * const psWordListDesc[] = {
    "PS Level 1 operators",
    "PS Level 2 operators",
    "PS Level 3 operators",
    "RIP-specific operators",
    "User-defined operators",
    0
};

LexerModule lmPS(SCLEX_PS, ColourisePSDoc, "ps", FoldPSDoc, psWordListDesc);
Commit	Line	Data
88a8b04e RD	1	// Scintilla source code edit control
	2	/** @file LexPS.cxx
	3	** Lexer for PostScript
	4	**
	5	** Written by Nigel Hathaway <nigel@bprj.co.uk>.
	6	** The License.txt file describes the conditions under which this software may be distributed.
	7	**/
	8
	9	#include <stdlib.h>
	10	#include <string.h>
88a8b04e	11	#include <stdio.h>
1dcf666d RD	12	#include <stdarg.h>
	13	#include <assert.h>
	14	#include <ctype.h>
88a8b04e	15
1dcf666d RD	16	#include "ILexer.h"
	17	#include "Scintilla.h"
	18	#include "SciLexer.h"
88a8b04e	19
1dcf666d RD	20	#include "WordList.h"
1dcf666d RD	21	#include "LexAccessor.h"
88a8b04e RD	22	#include "Accessor.h"
88a8b04e RD	23	#include "StyleContext.h"
1dcf666d RD	24	#include "CharacterSet.h"
1dcf666d RD	25	#include "LexerModule.h"
88a8b04e	26
7e0c58e9 RD	27	#ifdef SCI_NAMESPACE
	28	using namespace Scintilla;
	29	#endif
	30
88a8b04e RD	31	static inline bool IsASelfDelimitingChar(const int ch) {
	32	return (ch == '[' \|\| ch == ']' \|\| ch == '{' \|\| ch == '}' \|\|
	33	ch == '/' \|\| ch == '<' \|\| ch == '>' \|\|
	34	ch == '(' \|\| ch == ')' \|\| ch == '%');
	35	}
	36
	37	static inline bool IsAWhitespaceChar(const int ch) {
	38	return (ch == ' ' \|\| ch == '\t' \|\| ch == '\r' \|\|
	39	ch == '\n' \|\| ch == '\f' \|\| ch == '\0');
	40	}
	41
	42	static bool IsABaseNDigit(const int ch, const int base) {
	43	int maxdig = '9';
	44	int letterext = -1;
	45
	46	if (base <= 10)
	47	maxdig = '0' + base - 1;
	48	else
	49	letterext = base - 11;
	50
	51	return ((ch >= '0' && ch <= maxdig) \|\|
	52	(ch >= 'A' && ch <= ('A' + letterext)) \|\|
	53	(ch >= 'a' && ch <= ('a' + letterext)));
	54	}
	55
	56	static inline bool IsABase85Char(const int ch) {
	57	return ((ch >= '!' && ch <= 'u') \|\| ch == 'z');
	58	}
	59
	60	static void ColourisePSDoc(
	61	unsigned int startPos,
	62	int length,
	63	int initStyle,
	64	WordList *keywordlists[],
	65	Accessor &styler) {
	66
	67	WordList &keywords1 = *keywordlists[0];
	68	WordList &keywords2 = *keywordlists[1];
	69	WordList &keywords3 = *keywordlists[2];
	70	WordList &keywords4 = *keywordlists[3];
	71	WordList &keywords5 = *keywordlists[4];
	72
	73	StyleContext sc(startPos, length, initStyle, styler);
	74
	75	bool tokenizing = styler.GetPropertyInt("ps.tokenize") != 0;
	76	int pslevel = styler.GetPropertyInt("ps.level", 3);
	77	int lineCurrent = styler.GetLine(startPos);
	78	int nestTextCurrent = 0;
	79	if (lineCurrent > 0 && initStyle == SCE_PS_TEXT)
	80	nestTextCurrent = styler.GetLineState(lineCurrent - 1);
	81	int numRadix = 0;
	82	bool numHasPoint = false;
	83	bool numHasExponent = false;
	84	bool numHasSign = false;
	85
	86	// Clear out existing tokenization
	87	if (tokenizing && length > 0) {
	88	styler.StartAt(startPos, static_cast<char>(INDIC2_MASK));
	89	styler.ColourTo(startPos + length-1, 0);
	90	styler.Flush();
	91	styler.StartAt(startPos);
	92	styler.StartSegment(startPos);
	93	}
	94
95	for (; sc.More(); sc.Forward()) {
96	if (sc.atLineStart)
97	lineCurrent = styler.GetLine(sc.currentPos);
98
99	// Determine if the current state should terminate.
100	if (sc.state == SCE_PS_COMMENT \|\| sc.state == SCE_PS_DSC_VALUE) {
101	if (sc.atLineEnd) {
102	sc.SetState(SCE_C_DEFAULT);
103	}
104	} else if (sc.state == SCE_PS_DSC_COMMENT) {
105	if (sc.ch == ':') {
106	sc.Forward();
107	if (!sc.atLineEnd)
108	sc.SetState(SCE_PS_DSC_VALUE);
109	else
110	sc.SetState(SCE_C_DEFAULT);
111	} else if (sc.atLineEnd) {
112	sc.SetState(SCE_C_DEFAULT);
7e0c58e9	113	} else if (IsAWhitespaceChar(sc.ch) && sc.ch != '\r') {
88a8b04e RD	114	sc.ChangeState(SCE_PS_COMMENT);
	115	}
	116	} else if (sc.state == SCE_PS_NUMBER) {
	117	if (IsASelfDelimitingChar(sc.ch) \|\| IsAWhitespaceChar(sc.ch)) {
	118	if ((sc.chPrev == '+' \|\| sc.chPrev == '-' \|\|
	119	sc.chPrev == 'E' \|\| sc.chPrev == 'e') && numRadix == 0)
	120	sc.ChangeState(SCE_PS_NAME);
	121	sc.SetState(SCE_C_DEFAULT);
	122	} else if (sc.ch == '#') {
	123	if (numHasPoint \|\| numHasExponent \|\| numHasSign \|\| numRadix != 0) {
	124	sc.ChangeState(SCE_PS_NAME);
	125	} else {
	126	char szradix[5];
	127	sc.GetCurrent(szradix, 4);
	128	numRadix = atoi(szradix);
	129	if (numRadix < 2 \|\| numRadix > 36)
	130	sc.ChangeState(SCE_PS_NAME);
	131	}
	132	} else if ((sc.ch == 'E' \|\| sc.ch == 'e') && numRadix == 0) {
	133	if (numHasExponent) {
	134	sc.ChangeState(SCE_PS_NAME);
	135	} else {
	136	numHasExponent = true;
	137	if (sc.chNext == '+' \|\| sc.chNext == '-')
	138	sc.Forward();
	139	}
	140	} else if (sc.ch == '.') {
	141	if (numHasPoint \|\| numHasExponent \|\| numRadix != 0) {
	142	sc.ChangeState(SCE_PS_NAME);
	143	} else {
	144	numHasPoint = true;
	145	}
	146	} else if (numRadix == 0) {
	147	if (!IsABaseNDigit(sc.ch, 10))
	148	sc.ChangeState(SCE_PS_NAME);
	149	} else {
	150	if (!IsABaseNDigit(sc.ch, numRadix))
	151	sc.ChangeState(SCE_PS_NAME);
	152	}
	153	} else if (sc.state == SCE_PS_NAME \|\| sc.state == SCE_PS_KEYWORD) {
	154	if (IsASelfDelimitingChar(sc.ch) \|\| IsAWhitespaceChar(sc.ch)) {
	155	char s[100];
	156	sc.GetCurrent(s, sizeof(s));
	157	if ((pslevel >= 1 && keywords1.InList(s)) \|\|
	158	(pslevel >= 2 && keywords2.InList(s)) \|\|
	159	(pslevel >= 3 && keywords3.InList(s)) \|\|
	160	keywords4.InList(s) \|\| keywords5.InList(s)) {
	161	sc.ChangeState(SCE_PS_KEYWORD);
	162	}
	163	sc.SetState(SCE_C_DEFAULT);
	164	}
	165	} else if (sc.state == SCE_PS_LITERAL \|\| sc.state == SCE_PS_IMMEVAL) {
	166	if (IsASelfDelimitingChar(sc.ch) \|\| IsAWhitespaceChar(sc.ch))
	167	sc.SetState(SCE_C_DEFAULT);
	168	} else if (sc.state == SCE_PS_PAREN_ARRAY \|\| sc.state == SCE_PS_PAREN_DICT \|\|
	169	sc.state == SCE_PS_PAREN_PROC) {
	170	sc.SetState(SCE_C_DEFAULT);
	171	} else if (sc.state == SCE_PS_TEXT) {
	172	if (sc.ch == '(') {
	173	nestTextCurrent++;
	174	} else if (sc.ch == ')') {
	175	if (--nestTextCurrent == 0)
	176	sc.ForwardSetState(SCE_PS_DEFAULT);
	177	} else if (sc.ch == '\\') {
178	sc.Forward();
179	}
180	} else if (sc.state == SCE_PS_HEXSTRING) {
181	if (sc.ch == '>') {
182	sc.ForwardSetState(SCE_PS_DEFAULT);
183	} else if (!IsABaseNDigit(sc.ch, 16) && !IsAWhitespaceChar(sc.ch)) {
184	sc.SetState(SCE_PS_HEXSTRING);
185	styler.ColourTo(sc.currentPos, SCE_PS_BADSTRINGCHAR);
186	}
187	} else if (sc.state == SCE_PS_BASE85STRING) {
188	if (sc.Match('~', '>')) {
189	sc.Forward();
190	sc.ForwardSetState(SCE_PS_DEFAULT);
191	} else if (!IsABase85Char(sc.ch) && !IsAWhitespaceChar(sc.ch)) {
192	sc.SetState(SCE_PS_BASE85STRING);
193	styler.ColourTo(sc.currentPos, SCE_PS_BADSTRINGCHAR);
194	}
195	}
196
197	// Determine if a new state should be entered.
198	if (sc.state == SCE_C_DEFAULT) {
199	unsigned int tokenpos = sc.currentPos;
200
201	if (sc.ch == '[' \|\| sc.ch == ']') {
202	sc.SetState(SCE_PS_PAREN_ARRAY);
203	} else if (sc.ch == '{' \|\| sc.ch == '}') {
204	sc.SetState(SCE_PS_PAREN_PROC);
205	} else if (sc.ch == '/') {
206	if (sc.chNext == '/') {
207	sc.SetState(SCE_PS_IMMEVAL);
208	sc.Forward();
209	} else {
210	sc.SetState(SCE_PS_LITERAL);
211	}
212	} else if (sc.ch == '<') {
213	if (sc.chNext == '<') {
214	sc.SetState(SCE_PS_PAREN_DICT);
215	sc.Forward();
216	} else if (sc.chNext == '~') {
217	sc.SetState(SCE_PS_BASE85STRING);
218	sc.Forward();
219	} else {
220	sc.SetState(SCE_PS_HEXSTRING);
221	}
222	} else if (sc.ch == '>' && sc.chNext == '>') {
223	sc.SetState(SCE_PS_PAREN_DICT);
224	sc.Forward();
225	} else if (sc.ch == '>' \|\| sc.ch == ')') {
226	sc.SetState(SCE_C_DEFAULT);
227	styler.ColourTo(sc.currentPos, SCE_PS_BADSTRINGCHAR);
228	} else if (sc.ch == '(') {
229	sc.SetState(SCE_PS_TEXT);
230	nestTextCurrent = 1;
231	} else if (sc.ch == '%') {
232	if (sc.chNext == '%' && sc.atLineStart) {
233	sc.SetState(SCE_PS_DSC_COMMENT);
234	sc.Forward();
235	if (sc.chNext == '+') {
236	sc.Forward();
237	sc.ForwardSetState(SCE_PS_DSC_VALUE);
238	}
239	} else {
240	sc.SetState(SCE_PS_COMMENT);
241	}
242	} else if ((sc.ch == '+' \|\| sc.ch == '-' \|\| sc.ch == '.') &&
243	IsABaseNDigit(sc.chNext, 10)) {
244	sc.SetState(SCE_PS_NUMBER);
245	numRadix = 0;
246	numHasPoint = (sc.ch == '.');
247	numHasExponent = false;
248	numHasSign = (sc.ch == '+' \|\| sc.ch == '-');
249	} else if ((sc.ch == '+' \|\| sc.ch == '-') && sc.chNext == '.' &&
250	IsABaseNDigit(sc.GetRelative(2), 10)) {
251	sc.SetState(SCE_PS_NUMBER);
252	numRadix = 0;
253	numHasPoint = false;
254	numHasExponent = false;
255	numHasSign = true;
256	} else if (IsABaseNDigit(sc.ch, 10)) {
257	sc.SetState(SCE_PS_NUMBER);
258	numRadix = 0;
259	numHasPoint = false;
260	numHasExponent = false;
261	numHasSign = false;
262	} else if (!IsAWhitespaceChar(sc.ch)) {
263	sc.SetState(SCE_PS_NAME);
264	}
265
266	// Mark the start of tokens
267	if (tokenizing && sc.state != SCE_C_DEFAULT && sc.state != SCE_PS_COMMENT &&
268	sc.state != SCE_PS_DSC_COMMENT && sc.state != SCE_PS_DSC_VALUE) {
269	styler.Flush();
270	styler.StartAt(tokenpos, static_cast<char>(INDIC2_MASK));
271	styler.ColourTo(tokenpos, INDIC2_MASK);
272	styler.Flush();
273	styler.StartAt(tokenpos);
274	styler.StartSegment(tokenpos);
275	}
276	}
277
278	if (sc.atLineEnd)
279	styler.SetLineState(lineCurrent, nestTextCurrent);
280	}
281
282	sc.Complete();
283	}
284
285	static void FoldPSDoc(unsigned int startPos, int length, int, WordList *[],
286	Accessor &styler) {
287	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
288	bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
289	unsigned int endPos = startPos + length;
290	int visibleChars = 0;
291	int lineCurrent = styler.GetLine(startPos);
292	int levelCurrent = SC_FOLDLEVELBASE;
293	if (lineCurrent > 0)
294	levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
295	int levelMinCurrent = levelCurrent;
296	int levelNext = levelCurrent;
297	char chNext = styler[startPos];
298	int styleNext = styler.StyleAt(startPos);
299	int style;
300	for (unsigned int i = startPos; i < endPos; i++) {
301	char ch = chNext;
302	chNext = styler.SafeGetCharAt(i + 1);
303	style = styleNext;
304	styleNext = styler.StyleAt(i + 1);
305	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n'); //mac??
306	if ((style & 31) == SCE_PS_PAREN_PROC) {
307	if (ch == '{') {
308	// Measure the minimum before a '{' to allow
309	// folding on "} {"
310	if (levelMinCurrent > levelNext) {
311	levelMinCurrent = levelNext;
312	}
313	levelNext++;
314	} else if (ch == '}') {
315	levelNext--;
316	}
317	}
318	if (atEOL) {
319	int levelUse = levelCurrent;
320	if (foldAtElse) {
321	levelUse = levelMinCurrent;
322	}
323	int lev = levelUse \| levelNext << 16;
324	if (visibleChars == 0 && foldCompact)
325	lev \|= SC_FOLDLEVELWHITEFLAG;
326	if (levelUse < levelNext)
327	lev \|= SC_FOLDLEVELHEADERFLAG;
328	if (lev != styler.LevelAt(lineCurrent)) {
329	styler.SetLevel(lineCurrent, lev);
330	}
331	lineCurrent++;
332	levelCurrent = levelNext;
333	levelMinCurrent = levelCurrent;
334	visibleChars = 0;
335	}
336	if (!isspacechar(ch))
337	visibleChars++;
338	}
339	}
340
341	static const char * const psWordListDesc[] = {
342	"PS Level 1 operators",
343	"PS Level 2 operators",
344	"PS Level 3 operators",
345	"RIP-specific operators",
346	"User-defined operators",
347	0
348	};
349
350	LexerModule lmPS(SCLEX_PS, ColourisePSDoc, "ps", FoldPSDoc, psWordListDesc);