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