xref: /trunk/main/starmath/source/parse.cxx (revision cdf0e10c4e3984b49a9502b011690b615761d4a3)
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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_starmath.hxx"
30 
31 
32 #include <stdio.h>
33 
34 #define SMDLL 1
35 
36 #include <com/sun/star/i18n/UnicodeType.hpp>
37 #include <i18npool/lang.h>
38 #include <unotools/charclass.hxx>
39 #include <editeng/unolingu.hxx>
40 #include <unotools/syslocale.hxx>
41 #include "parse.hxx"
42 #ifndef _STARMATH_HRC
43 #include "starmath.hrc"
44 #endif
45 #ifndef _SMDLL_HXX
46 #include "smdll.hxx"
47 #endif
48 #include "smmod.hxx"
49 #include "config.hxx"
50 
51 #include "node.hxx"
52 
53 using namespace ::com::sun::star;
54 using namespace ::com::sun::star::i18n;
55 
56 ///////////////////////////////////////////////////////////////////////////
57 
58 static inline sal_Bool strnccmp(const String &u1, xub_StrLen nIdx,
59                             const sal_Char *s2, xub_StrLen nLen)
60 {
61     return u1.EqualsIgnoreCaseAscii( s2, nIdx, nLen );
62 }
63 
64 static const sal_Unicode aDelimiterTable[] =
65 {
66     ' ',    '\t',   '\n',   '\r',   '+',    '-',    '*',    '/',    '=',    '#',
67     '%',    '\\',   '"',    '~',    '`',    '>',    '<',    '&',    '|',    '(',
68     ')',    '{',    '}',    '[',    ']',    '^',    '_',
69     '\0'    // end of list symbol
70 };
71 
72 
73 static inline sal_Bool IsDigit( sal_Unicode cChar )
74 {
75     return '0' <= cChar && cChar <= '9';
76 }
77 
78 ///////////////////////////////////////////////////////////////////////////
79 
80 SmToken::SmToken() :
81     eType       (TUNKNOWN),
82     cMathChar   ('\0')
83 {
84     nGroup = nCol = nRow = nLevel = 0;
85 }
86 
87 ///////////////////////////////////////////////////////////////////////////
88 
89 struct SmTokenTableEntry
90 {
91     const sal_Char* pIdent;
92     SmTokenType     eType;
93     sal_Unicode     cMathChar;
94     sal_uLong           nGroup;
95     sal_uInt16          nLevel;
96 };
97 
98 static const SmTokenTableEntry aTokenTable[] =
99 {
100 //  { "#", TPOUND, '\0', 0, 0 },
101 //  { "##", TDPOUND, '\0', 0, 0 },
102 //  { "&", TAND, MS_AND, TGPRODUCT, 0 },
103 //  { "(", TLPARENT, MS_LPARENT, TGLBRACES, 5 },    //! 5 to continue expression
104 //  { ")", TRPARENT, MS_RPARENT, TGRBRACES, 0 },    //! 0 to terminate expression
105 //  { "*", TMULTIPLY, MS_MULTIPLY, TGPRODUCT, 0 },
106 //  { "+", TPLUS, MS_PLUS, TGUNOPER | TGSUM, 5 },
107 //  { "+-", TPLUSMINUS, MS_PLUSMINUS, TGUNOPER | TGSUM, 5 },
108 //  { "-", TMINUS, MS_MINUS, TGUNOPER | TGSUM, 5 },
109 //  { "-+", TMINUSPLUS, MS_MINUSPLUS, TGUNOPER | TGSUM, 5 },
110 //  { ".", TPOINT, '\0', 0, 0 },
111 //  { "/", TDIVIDEBY, MS_SLASH, TGPRODUCT, 0 },
112 //  { "<", TLT, MS_LT, TGRELATION, 0 },
113 //  { "<<", TLL, MS_LL, TGRELATION, 0 },
114 //  { "<=", TLE, MS_LE, TGRELATION, 0 },
115 //  { "<>", TNEQ, MS_NEQ, TGRELATION, 0},
116 //  { "<?>", TPLACE, MS_PLACE, 0, 5 },
117 //  { "=", TASSIGN, MS_ASSIGN, TGRELATION, 0},
118 //  { ">", TGT, MS_GT, TGRELATION, 0 },
119 //  { ">=", TGE, MS_GE, TGRELATION, 0 },
120 //  { ">>", TGG, MS_GG, TGRELATION, 0 },
121     { "Im" , TIM, MS_IM, TGSTANDALONE, 5 },
122     { "MZ23", TDEBUG, '\0', TGATTRIBUT, 0 },
123     { "Re" , TRE, MS_RE, TGSTANDALONE, 5 },
124     { "abs", TABS, '\0', TGUNOPER, 13 },
125     { "arcosh", TACOSH, '\0', TGFUNCTION, 5 },
126     { "arcoth", TACOTH, '\0', TGFUNCTION, 5 },
127     { "acute", TACUTE, MS_ACUTE, TGATTRIBUT, 5 },
128     { "aleph" , TALEPH, MS_ALEPH, TGSTANDALONE, 5 },
129     { "alignb", TALIGNC, '\0', TGALIGN | TGDISCARDED, 0},
130     { "alignc", TALIGNC, '\0', TGALIGN, 0},
131     { "alignl", TALIGNL, '\0', TGALIGN, 0},
132     { "alignm", TALIGNC, '\0', TGALIGN | TGDISCARDED, 0},
133     { "alignr", TALIGNR, '\0', TGALIGN, 0},
134     { "alignt", TALIGNC, '\0', TGALIGN | TGDISCARDED, 0},
135     { "and", TAND, MS_AND, TGPRODUCT, 0},
136     { "approx", TAPPROX, MS_APPROX, TGRELATION, 0},
137     { "arccos", TACOS, '\0', TGFUNCTION, 5},
138     { "arccot", TACOT, '\0', TGFUNCTION, 5},
139     { "arcsin", TASIN, '\0', TGFUNCTION, 5},
140     { "arctan", TATAN, '\0', TGFUNCTION, 5},
141     { "arsinh", TASINH, '\0', TGFUNCTION, 5},
142     { "artanh", TATANH, '\0', TGFUNCTION, 5},
143     { "backepsilon" , TBACKEPSILON, MS_BACKEPSILON, TGSTANDALONE, 5},
144     { "bar", TBAR, MS_BAR, TGATTRIBUT, 5},
145     { "binom", TBINOM, '\0', 0, 5 },
146     { "black", TBLACK, '\0', TGCOLOR, 0},
147     { "blue", TBLUE, '\0', TGCOLOR, 0},
148     { "bold", TBOLD, '\0', TGFONTATTR, 5},
149     { "boper", TBOPER, '\0', TGPRODUCT, 0},
150     { "breve", TBREVE, MS_BREVE, TGATTRIBUT, 5},
151     { "bslash", TBACKSLASH, MS_BACKSLASH, TGPRODUCT, 0 },
152     { "cdot", TCDOT, MS_CDOT, TGPRODUCT, 0},
153     { "check", TCHECK, MS_CHECK, TGATTRIBUT, 5},
154     { "circ" , TCIRC, MS_CIRC, TGSTANDALONE, 5},
155     { "circle", TCIRCLE, MS_CIRCLE, TGATTRIBUT, 5},
156     { "color", TCOLOR, '\0', TGFONTATTR, 5},
157     { "coprod", TCOPROD, MS_COPROD, TGOPER, 5},
158     { "cos", TCOS, '\0', TGFUNCTION, 5},
159     { "cosh", TCOSH, '\0', TGFUNCTION, 5},
160     { "cot", TCOT, '\0', TGFUNCTION, 5},
161     { "coth", TCOTH, '\0', TGFUNCTION, 5},
162     { "csub", TCSUB, '\0', TGPOWER, 0},
163     { "csup", TCSUP, '\0', TGPOWER, 0},
164     { "cyan", TCYAN, '\0', TGCOLOR, 0},
165     { "dddot", TDDDOT, MS_DDDOT, TGATTRIBUT, 5},
166     { "ddot", TDDOT, MS_DDOT, TGATTRIBUT, 5},
167     { "def", TDEF, MS_DEF, TGRELATION, 0},
168     { "div", TDIV, MS_DIV, TGPRODUCT, 0},
169     { "divides", TDIVIDES, MS_LINE, TGRELATION, 0},
170     { "dlarrow" , TDLARROW, MS_DLARROW, TGSTANDALONE, 5},
171     { "dlrarrow" , TDLRARROW, MS_DLRARROW, TGSTANDALONE, 5},
172     { "dot", TDOT, MS_DOT, TGATTRIBUT, 5},
173     { "dotsaxis", TDOTSAXIS, MS_DOTSAXIS, TGSTANDALONE, 5}, // 5 to continue expression
174     { "dotsdiag", TDOTSDIAG, MS_DOTSUP, TGSTANDALONE, 5},   //
175     { "dotsdown", TDOTSDOWN, MS_DOTSDOWN, TGSTANDALONE, 5},  //
176     { "dotslow", TDOTSLOW, MS_DOTSLOW, TGSTANDALONE, 5},    //
177     { "dotsup", TDOTSUP, MS_DOTSUP, TGSTANDALONE, 5},      //
178     { "dotsvert", TDOTSVERT, MS_DOTSVERT, TGSTANDALONE, 5}, //
179     { "downarrow" , TDOWNARROW, MS_DOWNARROW, TGSTANDALONE, 5},
180     { "drarrow" , TDRARROW, MS_DRARROW, TGSTANDALONE, 5},
181     { "emptyset" , TEMPTYSET, MS_EMPTYSET, TGSTANDALONE, 5},
182     { "equiv", TEQUIV, MS_EQUIV, TGRELATION, 0},
183     { "exists", TEXISTS, MS_EXISTS, TGSTANDALONE, 5},
184     { "exp", TEXP, '\0', TGFUNCTION, 5},
185     { "fact", TFACT, MS_FACT, TGUNOPER, 5},
186     { "fixed", TFIXED, '\0', TGFONT, 0},
187     { "font", TFONT, '\0', TGFONTATTR, 5},
188     { "forall", TFORALL, MS_FORALL, TGSTANDALONE, 5},
189     { "from", TFROM, '\0', TGLIMIT, 0},
190     { "func", TFUNC, '\0', TGFUNCTION, 5},
191     { "ge", TGE, MS_GE, TGRELATION, 0},
192     { "geslant", TGESLANT, MS_GESLANT, TGRELATION, 0 },
193     { "gg", TGG, MS_GG, TGRELATION, 0},
194     { "grave", TGRAVE, MS_GRAVE, TGATTRIBUT, 5},
195     { "green", TGREEN, '\0', TGCOLOR, 0},
196     { "gt", TGT, MS_GT, TGRELATION, 0},
197     { "hat", THAT, MS_HAT, TGATTRIBUT, 5},
198     { "hbar" , THBAR, MS_HBAR, TGSTANDALONE, 5},
199     { "iiint", TIIINT, MS_IIINT, TGOPER, 5},
200     { "iint", TIINT, MS_IINT, TGOPER, 5},
201     { "in", TIN, MS_IN, TGRELATION, 0},
202     { "infinity" , TINFINITY, MS_INFINITY, TGSTANDALONE, 5},
203     { "infty" , TINFINITY, MS_INFINITY, TGSTANDALONE, 5},
204     { "int", TINT, MS_INT, TGOPER, 5},
205     { "intersection", TINTERSECT, MS_INTERSECT, TGPRODUCT, 0},
206     { "ital", TITALIC, '\0', TGFONTATTR, 5},
207     { "italic", TITALIC, '\0', TGFONTATTR, 5},
208     { "lambdabar" , TLAMBDABAR, MS_LAMBDABAR, TGSTANDALONE, 5},
209     { "langle", TLANGLE, MS_LANGLE, TGLBRACES, 5},
210     { "lbrace", TLBRACE, MS_LBRACE, TGLBRACES, 5},
211     { "lceil", TLCEIL, MS_LCEIL, TGLBRACES, 5},
212     { "ldbracket", TLDBRACKET, MS_LDBRACKET, TGLBRACES, 5},
213     { "ldline", TLDLINE, MS_DLINE, TGLBRACES, 5},
214     { "le", TLE, MS_LE, TGRELATION, 0},
215     { "left", TLEFT, '\0', 0, 5},
216     { "leftarrow" , TLEFTARROW, MS_LEFTARROW, TGSTANDALONE, 5},
217     { "leslant", TLESLANT, MS_LESLANT, TGRELATION, 0 },
218     { "lfloor", TLFLOOR, MS_LFLOOR, TGLBRACES, 5},
219     { "lim", TLIM, '\0', TGOPER, 5},
220     { "liminf", TLIMINF, '\0', TGOPER, 5},
221     { "limsup", TLIMSUP, '\0', TGOPER, 5},
222     { "lint", TLINT, MS_LINT, TGOPER, 5},
223     { "ll", TLL, MS_LL, TGRELATION, 0},
224     { "lline", TLLINE, MS_LINE, TGLBRACES, 5},
225     { "llint", TLLINT, MS_LLINT, TGOPER, 5},
226     { "lllint", TLLLINT, MS_LLLINT, TGOPER, 5},
227     { "ln", TLN, '\0', TGFUNCTION, 5},
228     { "log", TLOG, '\0', TGFUNCTION, 5},
229     { "lsub", TLSUB, '\0', TGPOWER, 0},
230     { "lsup", TLSUP, '\0', TGPOWER, 0},
231     { "lt", TLT, MS_LT, TGRELATION, 0},
232     { "magenta", TMAGENTA, '\0', TGCOLOR, 0},
233     { "matrix", TMATRIX, '\0', 0, 5},
234     { "minusplus", TMINUSPLUS, MS_MINUSPLUS, TGUNOPER | TGSUM, 5},
235     { "mline", TMLINE, MS_LINE, 0, 0},      //! nicht in TGRBRACES, Level 0
236     { "nabla", TNABLA, MS_NABLA, TGSTANDALONE, 5},
237     { "nbold", TNBOLD, '\0', TGFONTATTR, 5},
238     { "ndivides", TNDIVIDES, MS_NDIVIDES, TGRELATION, 0},
239     { "neg", TNEG, MS_NEG, TGUNOPER, 5 },
240     { "neq", TNEQ, MS_NEQ, TGRELATION, 0},
241     { "newline", TNEWLINE, '\0', 0, 0},
242     { "ni", TNI, MS_NI, TGRELATION, 0},
243     { "nitalic", TNITALIC, '\0', TGFONTATTR, 5},
244     { "none", TNONE, '\0', TGLBRACES | TGRBRACES, 0},
245     { "nospace", TNOSPACE, '\0', TGSTANDALONE, 5},
246     { "notin", TNOTIN, MS_NOTIN, TGRELATION, 0},
247     { "nroot", TNROOT, MS_SQRT, TGUNOPER, 5},
248     { "nsubset", TNSUBSET, MS_NSUBSET, TGRELATION, 0 },
249     { "nsupset", TNSUPSET, MS_NSUPSET, TGRELATION, 0 },
250     { "nsubseteq", TNSUBSETEQ, MS_NSUBSETEQ, TGRELATION, 0 },
251     { "nsupseteq", TNSUPSETEQ, MS_NSUPSETEQ, TGRELATION, 0 },
252     { "odivide", TODIVIDE, MS_ODIVIDE, TGPRODUCT, 0},
253     { "odot", TODOT, MS_ODOT, TGPRODUCT, 0},
254     { "ominus", TOMINUS, MS_OMINUS, TGSUM, 0},
255     { "oper", TOPER, '\0', TGOPER, 5},
256     { "oplus", TOPLUS, MS_OPLUS, TGSUM, 0},
257     { "or", TOR, MS_OR, TGSUM, 0},
258     { "ortho", TORTHO, MS_ORTHO, TGRELATION, 0},
259     { "otimes", TOTIMES, MS_OTIMES, TGPRODUCT, 0},
260     { "over", TOVER, '\0', TGPRODUCT, 0},
261     { "overbrace", TOVERBRACE, MS_OVERBRACE, TGPRODUCT, 5},
262     { "overline", TOVERLINE, '\0', TGATTRIBUT, 5},
263     { "overstrike", TOVERSTRIKE, '\0', TGATTRIBUT, 5},
264     { "owns", TNI, MS_NI, TGRELATION, 0},
265     { "parallel", TPARALLEL, MS_DLINE, TGRELATION, 0},
266     { "partial", TPARTIAL, MS_PARTIAL, TGSTANDALONE, 5 },
267     { "phantom", TPHANTOM, '\0', TGFONTATTR, 5},
268     { "plusminus", TPLUSMINUS, MS_PLUSMINUS, TGUNOPER | TGSUM, 5},
269     { "prod", TPROD, MS_PROD, TGOPER, 5},
270     { "prop", TPROP, MS_PROP, TGRELATION, 0},
271     { "rangle", TRANGLE, MS_RANGLE, TGRBRACES, 0},  //! 0 to terminate expression
272     { "rbrace", TRBRACE, MS_RBRACE, TGRBRACES, 0},  //
273     { "rceil", TRCEIL, MS_RCEIL, TGRBRACES, 0}, //
274     { "rdbracket", TRDBRACKET, MS_RDBRACKET, TGRBRACES, 0}, //
275     { "rdline", TRDLINE, MS_DLINE, TGRBRACES, 0},   //
276     { "red", TRED, '\0', TGCOLOR, 0},
277     { "rfloor", TRFLOOR, MS_RFLOOR, TGRBRACES, 0},  //! 0 to terminate expression
278     { "right", TRIGHT, '\0', 0, 0},
279     { "rightarrow" , TRIGHTARROW, MS_RIGHTARROW, TGSTANDALONE, 5},
280     { "rline", TRLINE, MS_LINE, TGRBRACES, 0},  //! 0 to terminate expression
281     { "rsub", TRSUB, '\0', TGPOWER, 0},
282     { "rsup", TRSUP, '\0', TGPOWER, 0},
283     { "sans", TSANS, '\0', TGFONT, 0},
284     { "serif", TSERIF, '\0', TGFONT, 0},
285     { "setC" , TSETC, MS_SETC, TGSTANDALONE, 5},
286     { "setN" , TSETN, MS_SETN, TGSTANDALONE, 5},
287     { "setQ" , TSETQ, MS_SETQ, TGSTANDALONE, 5},
288     { "setR" , TSETR, MS_SETR, TGSTANDALONE, 5},
289     { "setZ" , TSETZ, MS_SETZ, TGSTANDALONE, 5},
290     { "setminus", TBACKSLASH, MS_BACKSLASH, TGPRODUCT, 0 },
291     { "sim", TSIM, MS_SIM, TGRELATION, 0},
292     { "simeq", TSIMEQ, MS_SIMEQ, TGRELATION, 0},
293     { "sin", TSIN, '\0', TGFUNCTION, 5},
294     { "sinh", TSINH, '\0', TGFUNCTION, 5},
295     { "size", TSIZE, '\0', TGFONTATTR, 5},
296     { "slash", TSLASH, MS_SLASH, TGPRODUCT, 0 },
297     { "sqrt", TSQRT, MS_SQRT, TGUNOPER, 5},
298     { "stack", TSTACK, '\0', 0, 5},
299     { "sub", TRSUB, '\0', TGPOWER, 0},
300     { "subset", TSUBSET, MS_SUBSET, TGRELATION, 0},
301     { "subseteq", TSUBSETEQ, MS_SUBSETEQ, TGRELATION, 0},
302     { "sum", TSUM, MS_SUM, TGOPER, 5},
303     { "sup", TRSUP, '\0', TGPOWER, 0},
304     { "supset", TSUPSET, MS_SUPSET, TGRELATION, 0},
305     { "supseteq", TSUPSETEQ, MS_SUPSETEQ, TGRELATION, 0},
306     { "tan", TTAN, '\0', TGFUNCTION, 5},
307     { "tanh", TTANH, '\0', TGFUNCTION, 5},
308     { "tilde", TTILDE, MS_TILDE, TGATTRIBUT, 5},
309     { "times", TTIMES, MS_TIMES, TGPRODUCT, 0},
310     { "to", TTO, '\0', TGLIMIT, 0},
311     { "toward", TTOWARD, MS_RIGHTARROW, TGRELATION, 0},
312     { "transl", TTRANSL, MS_TRANSL, TGRELATION, 0},
313     { "transr", TTRANSR, MS_TRANSR, TGRELATION, 0},
314     { "underbrace", TUNDERBRACE, MS_UNDERBRACE, TGPRODUCT, 5},
315     { "underline", TUNDERLINE, '\0', TGATTRIBUT, 5},
316     { "union", TUNION, MS_UNION, TGSUM, 0},
317     { "uoper", TUOPER, '\0', TGUNOPER, 5},
318     { "uparrow" , TUPARROW, MS_UPARROW, TGSTANDALONE, 5},
319     { "vec", TVEC, MS_VEC, TGATTRIBUT, 5},
320     { "white", TWHITE, '\0', TGCOLOR, 0},
321     { "widebslash", TWIDEBACKSLASH, MS_BACKSLASH, TGPRODUCT, 0 },
322     { "widehat", TWIDEHAT, MS_HAT, TGATTRIBUT, 5},
323     { "widetilde", TWIDETILDE, MS_TILDE, TGATTRIBUT, 5},
324     { "wideslash", TWIDESLASH, MS_SLASH, TGPRODUCT, 0 },
325     { "widevec", TWIDEVEC, MS_VEC, TGATTRIBUT, 5},
326     { "wp" , TWP, MS_WP, TGSTANDALONE, 5},
327     { "yellow", TYELLOW, '\0', TGCOLOR, 0},
328 //  { "[", TLBRACKET, MS_LBRACKET, TGLBRACES, 5},   //! 5 to continue expression
329 //  { "\\", TESCAPE, '\0', 0, 5},
330 //  { "]", TRBRACKET, MS_RBRACKET, TGRBRACES, 0},   //! 0 to terminate expression
331 //  { "^", TRSUP, '\0', TGPOWER, 0},
332 //  { "_", TRSUB, '\0', TGPOWER, 0},
333 //  { "`", TSBLANK, '\0', TGBLANK, 5},
334 //  { "{", TLGROUP, MS_LBRACE, 0, 5},       //! 5 to continue expression
335 //  { "|", TOR, MS_OR, TGSUM, 0},
336 //  { "}", TRGROUP, MS_RBRACE, 0, 0},       //! 0 to terminate expression
337 //  { "~", TBLANK, '\0', TGBLANK, 5},
338     { "", TEND, '\0', 0, 0}
339 };
340 
341 
342 static const SmTokenTableEntry * GetTokenTableEntry( const String &rName )
343 {
344     const SmTokenTableEntry * pRes = 0;
345     if (rName.Len())
346     {
347         sal_Int32 nEntries = sizeof( aTokenTable ) / sizeof( aTokenTable[0] );
348         for (sal_Int32 i = 0;  i < nEntries;  ++i)
349         {
350             if (rName.EqualsIgnoreCaseAscii( aTokenTable[i].pIdent ))
351             {
352                 pRes = &aTokenTable[i];
353                 break;
354             }
355         }
356 
357     }
358 
359     return pRes;
360 }
361 
362 
363 ///////////////////////////////////////////////////////////////////////////
364 
365 #if OSL_DEBUG_LEVEL
366 
367 sal_Bool SmParser::IsDelimiter( const String &rTxt, xub_StrLen nPos )
368     // returns 'sal_True' iff cChar is '\0' or a delimeter
369 {
370     DBG_ASSERT( nPos <= rTxt.Len(), "index out of range" );
371 
372     sal_Unicode cChar = rTxt.GetChar( nPos );
373     if(!cChar)
374         return sal_True;
375 
376     // check if 'cChar' is in the delimeter table
377     const sal_Unicode *pDelim = &aDelimiterTable[0];
378     for ( ;  *pDelim != 0;  pDelim++)
379         if (*pDelim == cChar)
380             break;
381 
382     sal_Bool bIsDelim = *pDelim != 0;
383 
384     sal_Int16 nTypJp = SM_MOD()->GetSysLocale().GetCharClass().getType( rTxt, nPos );
385     bIsDelim |= nTypJp == com::sun::star::i18n::UnicodeType::SPACE_SEPARATOR ||
386                 nTypJp == com::sun::star::i18n::UnicodeType::CONTROL;
387 
388     return bIsDelim;
389 }
390 
391 #endif
392 
393 void SmParser::Insert(const String &rText, sal_uInt16 nPos)
394 {
395     m_aBufferString.Insert(rText, nPos);
396 
397     xub_StrLen  nLen = rText.Len();
398     m_nBufferIndex = m_nBufferIndex + nLen;
399     m_nTokenIndex  = m_nTokenIndex + nLen;
400 }
401 
402 
403 void SmParser::Replace( sal_uInt16 nPos, sal_uInt16 nLen, const String &rText )
404 {
405     DBG_ASSERT( nPos + nLen <= m_aBufferString.Len(), "argument mismatch" );
406 
407     m_aBufferString.Replace( nPos, nLen, rText );
408     sal_Int16  nChg = rText.Len() - nLen;
409     m_nBufferIndex = m_nBufferIndex + nChg;
410     m_nTokenIndex = m_nTokenIndex + nChg;
411 }
412 
413 
414 // First character may be any alphabetic
415 const sal_Int32 coStartFlags =
416         KParseTokens::ANY_LETTER_OR_NUMBER |
417         KParseTokens::IGNORE_LEADING_WS;
418 
419 // Continuing characters may be any alphanumeric or dot.
420 const sal_Int32 coContFlags =
421     ((coStartFlags | KParseTokens::ASC_DOT) & ~KParseTokens::IGNORE_LEADING_WS)
422     | KParseTokens::TWO_DOUBLE_QUOTES_BREAK_STRING;
423 
424 // First character for numbers, may be any numeric or dot
425 const sal_Int32 coNumStartFlags =
426         KParseTokens::ASC_DIGIT |
427         KParseTokens::ASC_DOT |
428         KParseTokens::IGNORE_LEADING_WS;
429 // Continuing characters for numbers, may be any numeric or dot.
430 const sal_Int32 coNumContFlags =
431     (coNumStartFlags | KParseTokens::ASC_DOT) & ~KParseTokens::IGNORE_LEADING_WS;
432 
433 void SmParser::NextToken()
434 {
435     static const String aEmptyStr;
436 
437     xub_StrLen  nBufLen = m_aBufferString.Len();
438     ParseResult aRes;
439     xub_StrLen  nRealStart;
440     sal_Bool        bCont;
441     sal_Bool        bNumStart = sal_False;
442     CharClass   aCC(SM_MOD()->GetSysLocale().GetCharClass().getLocale());
443     do
444     {
445         // skip white spaces
446         while (UnicodeType::SPACE_SEPARATOR ==
447                         aCC.getType( m_aBufferString, m_nBufferIndex ))
448            ++m_nBufferIndex;
449 
450         sal_Int32 nStartFlags = coStartFlags;
451         sal_Int32 nContFlags  = coContFlags;
452         sal_Unicode cFirstChar = m_aBufferString.GetChar( m_nBufferIndex );
453 /*
454         removed because of #i11752#
455         bNumStart = cFirstChar == '.' || ('0' <= cFirstChar && cFirstChar <= '9');
456         if (bNumStart)
457         {
458             nStartFlags = coNumStartFlags;
459             nContFlags  = coNumContFlags;
460         }
461 */
462         aRes = aCC.parseAnyToken( m_aBufferString, m_nBufferIndex,
463                                             nStartFlags, aEmptyStr,
464                                             nContFlags, aEmptyStr );
465 
466         // #i45779# parse numbers correctly
467         // i.e. independent from the locale setting.
468         // (note that #i11752# remains fixed)
469         if ((aRes.TokenType & KParseType::IDENTNAME) && IsDigit( cFirstChar ))
470         {
471             //! locale where '.' is decimal seperator!
472             static lang::Locale aDotLoc( SvxCreateLocale( LANGUAGE_ENGLISH_US ) );
473 
474             ParseResult aTmpRes;
475             lang::Locale aOldLoc( aCC.getLocale() );
476             aCC.setLocale( aDotLoc );
477             aTmpRes = aCC.parsePredefinedToken(
478                             KParseType::ASC_NUMBER,
479                             m_aBufferString, m_nBufferIndex,
480                             KParseTokens::ASC_DIGIT, aEmptyStr,
481                             KParseTokens::ASC_DIGIT | KParseTokens::ASC_DOT, aEmptyStr );
482             aCC.setLocale( aOldLoc );
483             if (aTmpRes.TokenType & KParseType::ASC_NUMBER)
484                 aRes.TokenType = aTmpRes.TokenType;
485         }
486 
487         nRealStart = m_nBufferIndex + sal::static_int_cast< xub_StrLen >(aRes.LeadingWhiteSpace);
488         m_nBufferIndex = nRealStart;
489 
490         bCont = sal_False;
491         if ( aRes.TokenType == 0  &&
492                 nRealStart < nBufLen &&
493                 '\n' == m_aBufferString.GetChar( nRealStart ) )
494         {
495             // keep data needed for tokens row and col entry up to date
496             ++m_Row;
497             m_nBufferIndex = m_nColOff = nRealStart + 1;
498             bCont = sal_True;
499         }
500         else if (aRes.TokenType & KParseType::ONE_SINGLE_CHAR)
501         {
502             String aName( m_aBufferString.Copy( nRealStart, 2 ));
503             if ( aName.EqualsAscii( "%%" ))
504             {
505                 //SkipComment
506                 m_nBufferIndex = nRealStart + 2;
507                 while (m_nBufferIndex < nBufLen  &&
508                     '\n' != m_aBufferString.GetChar( m_nBufferIndex ))
509                     ++m_nBufferIndex;
510                 bCont = sal_True;
511             }
512         }
513 
514     } while (bCont);
515 
516     // set index of current token
517     m_nTokenIndex = m_nBufferIndex;
518 
519     m_aCurToken.nRow   = m_Row;
520     m_aCurToken.nCol   = nRealStart - m_nColOff + 1;
521 
522     sal_Bool bHandled = sal_True;
523     if (nRealStart >= nBufLen)
524     {
525         m_aCurToken.eType    = TEND;
526         m_aCurToken.cMathChar = '\0';
527         m_aCurToken.nGroup       = 0;
528         m_aCurToken.nLevel       = 0;
529         m_aCurToken.aText.Erase();
530     }
531     else if ((aRes.TokenType & (KParseType::ASC_NUMBER | KParseType::UNI_NUMBER))
532              || (bNumStart && (aRes.TokenType & KParseType::IDENTNAME)))
533     {
534         sal_Int32 n = aRes.EndPos - nRealStart;
535         DBG_ASSERT( n >= 0, "length < 0" );
536         m_aCurToken.eType      = TNUMBER;
537         m_aCurToken.cMathChar  = '\0';
538         m_aCurToken.nGroup     = 0;
539         m_aCurToken.nLevel     = 5;
540         m_aCurToken.aText      = m_aBufferString.Copy( nRealStart, sal::static_int_cast< xub_StrLen >(n) );
541 
542 #if OSL_DEBUG_LEVEL > 1
543         if (!IsDelimiter( m_aBufferString, static_cast< xub_StrLen >(aRes.EndPos) ))
544         {
545             DBG_WARNING( "identifier really finished? (compatibility!)" );
546         }
547 #endif
548     }
549     else if (aRes.TokenType & KParseType::DOUBLE_QUOTE_STRING)
550     {
551         m_aCurToken.eType      = TTEXT;
552         m_aCurToken.cMathChar  = '\0';
553         m_aCurToken.nGroup     = 0;
554         m_aCurToken.nLevel     = 5;
555         m_aCurToken.aText     = aRes.DequotedNameOrString;
556         m_aCurToken.nRow       = m_Row;
557         m_aCurToken.nCol       = nRealStart - m_nColOff + 2;
558     }
559     else if (aRes.TokenType & KParseType::IDENTNAME)
560     {
561         sal_Int32 n = aRes.EndPos - nRealStart;
562         DBG_ASSERT( n >= 0, "length < 0" );
563         String aName( m_aBufferString.Copy( nRealStart, sal::static_int_cast< xub_StrLen >(n) ) );
564         const SmTokenTableEntry *pEntry = GetTokenTableEntry( aName );
565 
566         if (pEntry)
567         {
568             m_aCurToken.eType      = pEntry->eType;
569             m_aCurToken.cMathChar  = pEntry->cMathChar;
570             m_aCurToken.nGroup     = pEntry->nGroup;
571             m_aCurToken.nLevel     = pEntry->nLevel;
572             m_aCurToken.aText.AssignAscii( pEntry->pIdent );
573         }
574         else
575         {
576             m_aCurToken.eType      = TIDENT;
577             m_aCurToken.cMathChar  = '\0';
578             m_aCurToken.nGroup     = 0;
579             m_aCurToken.nLevel     = 5;
580             m_aCurToken.aText      = aName;
581 
582 #if OSL_DEBUG_LEVEL > 1
583             if (!IsDelimiter( m_aBufferString, static_cast< xub_StrLen >(aRes.EndPos) ))
584             {
585                 DBG_WARNING( "identifier really finished? (compatibility!)" );
586             }
587 #endif
588         }
589     }
590     else if (aRes.TokenType == 0  &&  '_' == m_aBufferString.GetChar( nRealStart ))
591     {
592         m_aCurToken.eType    = TRSUB;
593         m_aCurToken.cMathChar = '\0';
594         m_aCurToken.nGroup       = TGPOWER;
595         m_aCurToken.nLevel       = 0;
596         m_aCurToken.aText.AssignAscii( "_" );
597 
598         aRes.EndPos = nRealStart + 1;
599     }
600     else if (aRes.TokenType & KParseType::BOOLEAN)
601     {
602         sal_Int32   &rnEndPos = aRes.EndPos;
603         String  aName( m_aBufferString.Copy( nRealStart,
604                         sal::static_int_cast< xub_StrLen >(rnEndPos - nRealStart) ));
605         if (2 >= aName.Len())
606         {
607             sal_Unicode ch = aName.GetChar( 0 );
608             switch (ch)
609             {
610                 case '<':
611                     {
612                         if (m_aBufferString.Copy( nRealStart, 2 ).
613                                 EqualsAscii( "<<" ))
614                         {
615                             m_aCurToken.eType    = TLL;
616                             m_aCurToken.cMathChar = MS_LL;
617                             m_aCurToken.nGroup       = TGRELATION;
618                             m_aCurToken.nLevel       = 0;
619                             m_aCurToken.aText.AssignAscii( "<<" );
620 
621                             rnEndPos = nRealStart + 2;
622                         }
623                         else if (m_aBufferString.Copy( nRealStart, 2 ).
624                                 EqualsAscii( "<=" ))
625                         {
626                             m_aCurToken.eType    = TLE;
627                             m_aCurToken.cMathChar = MS_LE;
628                             m_aCurToken.nGroup       = TGRELATION;
629                             m_aCurToken.nLevel       = 0;
630                             m_aCurToken.aText.AssignAscii( "<=" );
631 
632                             rnEndPos = nRealStart + 2;
633                         }
634                         else if (m_aBufferString.Copy( nRealStart, 2 ).
635                                 EqualsAscii( "<>" ))
636                         {
637                             m_aCurToken.eType    = TNEQ;
638                             m_aCurToken.cMathChar = MS_NEQ;
639                             m_aCurToken.nGroup       = TGRELATION;
640                             m_aCurToken.nLevel       = 0;
641                             m_aCurToken.aText.AssignAscii( "<>" );
642 
643                             rnEndPos = nRealStart + 2;
644                         }
645                         else if (m_aBufferString.Copy( nRealStart, 3 ).
646                                 EqualsAscii( "<?>" ))
647                         {
648                             m_aCurToken.eType    = TPLACE;
649                             m_aCurToken.cMathChar = MS_PLACE;
650                             m_aCurToken.nGroup       = 0;
651                             m_aCurToken.nLevel       = 5;
652                             m_aCurToken.aText.AssignAscii( "<?>" );
653 
654                             rnEndPos = nRealStart + 3;
655                         }
656                         else
657                         {
658                             m_aCurToken.eType    = TLT;
659                             m_aCurToken.cMathChar = MS_LT;
660                             m_aCurToken.nGroup       = TGRELATION;
661                             m_aCurToken.nLevel       = 0;
662                             m_aCurToken.aText.AssignAscii( "<" );
663                         }
664                     }
665                     break;
666                 case '>':
667                     {
668                         if (m_aBufferString.Copy( nRealStart, 2 ).
669                                 EqualsAscii( ">=" ))
670                         {
671                             m_aCurToken.eType    = TGE;
672                             m_aCurToken.cMathChar = MS_GE;
673                             m_aCurToken.nGroup       = TGRELATION;
674                             m_aCurToken.nLevel       = 0;
675                             m_aCurToken.aText.AssignAscii( ">=" );
676 
677                             rnEndPos = nRealStart + 2;
678                         }
679                         else if (m_aBufferString.Copy( nRealStart, 2 ).
680                                 EqualsAscii( ">>" ))
681                         {
682                             m_aCurToken.eType    = TGG;
683                             m_aCurToken.cMathChar = MS_GG;
684                             m_aCurToken.nGroup       = TGRELATION;
685                             m_aCurToken.nLevel       = 0;
686                             m_aCurToken.aText.AssignAscii( ">>" );
687 
688                             rnEndPos = nRealStart + 2;
689                         }
690                         else
691                         {
692                             m_aCurToken.eType    = TGT;
693                             m_aCurToken.cMathChar = MS_GT;
694                             m_aCurToken.nGroup       = TGRELATION;
695                             m_aCurToken.nLevel       = 0;
696                             m_aCurToken.aText.AssignAscii( ">" );
697                         }
698                     }
699                     break;
700                 default:
701                     bHandled = sal_False;
702             }
703         }
704     }
705     else if (aRes.TokenType & KParseType::ONE_SINGLE_CHAR)
706     {
707         sal_Int32   &rnEndPos = aRes.EndPos;
708         String  aName( m_aBufferString.Copy( nRealStart,
709                             sal::static_int_cast< xub_StrLen >(rnEndPos - nRealStart) ) );
710 
711         if (1 == aName.Len())
712         {
713             sal_Unicode ch = aName.GetChar( 0 );
714             switch (ch)
715             {
716                 case '%':
717                     {
718                         //! modifies aRes.EndPos
719 
720                         DBG_ASSERT( rnEndPos >= nBufLen  ||
721                                     '%' != m_aBufferString.GetChar( sal::static_int_cast< xub_StrLen >(rnEndPos) ),
722                                 "unexpected comment start" );
723 
724                         // get identifier of user-defined character
725                         ParseResult aTmpRes = aCC.parseAnyToken(
726                                 m_aBufferString, rnEndPos,
727                                 KParseTokens::ANY_LETTER,
728                                 aEmptyStr,
729                                 coContFlags,
730                                 aEmptyStr );
731 
732                         xub_StrLen nTmpStart = sal::static_int_cast< xub_StrLen >(rnEndPos +
733                                                     aTmpRes.LeadingWhiteSpace);
734 
735                         // default setting for the case that no identifier
736                         // i.e. a valid symbol-name is following the '%'
737                         // character
738                         m_aCurToken.eType      = TTEXT;
739                         m_aCurToken.cMathChar  = '\0';
740                         m_aCurToken.nGroup     = 0;
741                         m_aCurToken.nLevel     = 5;
742                         m_aCurToken.aText      = String();
743                         m_aCurToken.nRow       = sal::static_int_cast< xub_StrLen >(m_Row);
744                         m_aCurToken.nCol       = nTmpStart - m_nColOff;
745 
746                         if (aTmpRes.TokenType & KParseType::IDENTNAME)
747                         {
748 
749                             xub_StrLen n = sal::static_int_cast< xub_StrLen >(aTmpRes.EndPos - nTmpStart);
750                             m_aCurToken.eType      = TSPECIAL;
751                             m_aCurToken.aText      = m_aBufferString.Copy( sal::static_int_cast< xub_StrLen >(nTmpStart-1), n+1 );
752 
753                             DBG_ASSERT( aTmpRes.EndPos > rnEndPos,
754                                     "empty identifier" );
755                             if (aTmpRes.EndPos > rnEndPos)
756                                 rnEndPos = aTmpRes.EndPos;
757                             else
758                                 ++rnEndPos;
759                         }
760 
761                         // if no symbol-name was found we start-over with
762                         // finding the next token right afer the '%' sign.
763                         // I.e. we leave rnEndPos unmodified.
764                     }
765                     break;
766                 case '[':
767                     {
768                         m_aCurToken.eType    = TLBRACKET;
769                         m_aCurToken.cMathChar = MS_LBRACKET;
770                         m_aCurToken.nGroup       = TGLBRACES;
771                         m_aCurToken.nLevel       = 5;
772                         m_aCurToken.aText.AssignAscii( "[" );
773                     }
774                     break;
775                 case '\\':
776                     {
777                         m_aCurToken.eType    = TESCAPE;
778                         m_aCurToken.cMathChar = '\0';
779                         m_aCurToken.nGroup       = 0;
780                         m_aCurToken.nLevel       = 5;
781                         m_aCurToken.aText.AssignAscii( "\\" );
782                     }
783                     break;
784                 case ']':
785                     {
786                         m_aCurToken.eType    = TRBRACKET;
787                         m_aCurToken.cMathChar = MS_RBRACKET;
788                         m_aCurToken.nGroup       = TGRBRACES;
789                         m_aCurToken.nLevel       = 0;
790                         m_aCurToken.aText.AssignAscii( "]" );
791                     }
792                     break;
793                 case '^':
794                     {
795                         m_aCurToken.eType    = TRSUP;
796                         m_aCurToken.cMathChar = '\0';
797                         m_aCurToken.nGroup       = TGPOWER;
798                         m_aCurToken.nLevel       = 0;
799                         m_aCurToken.aText.AssignAscii( "^" );
800                     }
801                     break;
802                 case '`':
803                     {
804                         m_aCurToken.eType    = TSBLANK;
805                         m_aCurToken.cMathChar = '\0';
806                         m_aCurToken.nGroup       = TGBLANK;
807                         m_aCurToken.nLevel       = 5;
808                         m_aCurToken.aText.AssignAscii( "`" );
809                     }
810                     break;
811                 case '{':
812                     {
813                         m_aCurToken.eType    = TLGROUP;
814                         m_aCurToken.cMathChar = MS_LBRACE;
815                         m_aCurToken.nGroup       = 0;
816                         m_aCurToken.nLevel       = 5;
817                         m_aCurToken.aText.AssignAscii( "{" );
818                     }
819                     break;
820                 case '|':
821                     {
822                         m_aCurToken.eType    = TOR;
823                         m_aCurToken.cMathChar = MS_OR;
824                         m_aCurToken.nGroup       = TGSUM;
825                         m_aCurToken.nLevel       = 0;
826                         m_aCurToken.aText.AssignAscii( "|" );
827                     }
828                     break;
829                 case '}':
830                     {
831                         m_aCurToken.eType    = TRGROUP;
832                         m_aCurToken.cMathChar = MS_RBRACE;
833                         m_aCurToken.nGroup       = 0;
834                         m_aCurToken.nLevel       = 0;
835                         m_aCurToken.aText.AssignAscii( "}" );
836                     }
837                     break;
838                 case '~':
839                     {
840                         m_aCurToken.eType    = TBLANK;
841                         m_aCurToken.cMathChar = '\0';
842                         m_aCurToken.nGroup       = TGBLANK;
843                         m_aCurToken.nLevel       = 5;
844                         m_aCurToken.aText.AssignAscii( "~" );
845                     }
846                     break;
847                 case '#':
848                     {
849                         if (m_aBufferString.Copy( nRealStart, 2 ).
850                                 EqualsAscii( "##" ))
851                         {
852                             m_aCurToken.eType    = TDPOUND;
853                             m_aCurToken.cMathChar = '\0';
854                             m_aCurToken.nGroup       = 0;
855                             m_aCurToken.nLevel       = 0;
856                             m_aCurToken.aText.AssignAscii( "##" );
857 
858                             rnEndPos = nRealStart + 2;
859                         }
860                         else
861                         {
862                             m_aCurToken.eType    = TPOUND;
863                             m_aCurToken.cMathChar = '\0';
864                             m_aCurToken.nGroup       = 0;
865                             m_aCurToken.nLevel       = 0;
866                             m_aCurToken.aText.AssignAscii( "#" );
867                         }
868                     }
869                     break;
870                 case '&':
871                     {
872                         m_aCurToken.eType    = TAND;
873                         m_aCurToken.cMathChar = MS_AND;
874                         m_aCurToken.nGroup       = TGPRODUCT;
875                         m_aCurToken.nLevel       = 0;
876                         m_aCurToken.aText.AssignAscii( "&" );
877                     }
878                     break;
879                 case '(':
880                     {
881                         m_aCurToken.eType    = TLPARENT;
882                         m_aCurToken.cMathChar = MS_LPARENT;
883                         m_aCurToken.nGroup       = TGLBRACES;
884                         m_aCurToken.nLevel       = 5;     //! 0 to continue expression
885                         m_aCurToken.aText.AssignAscii( "(" );
886                     }
887                     break;
888                 case ')':
889                     {
890                         m_aCurToken.eType    = TRPARENT;
891                         m_aCurToken.cMathChar = MS_RPARENT;
892                         m_aCurToken.nGroup       = TGRBRACES;
893                         m_aCurToken.nLevel       = 0;     //! 0 to terminate expression
894                         m_aCurToken.aText.AssignAscii( ")" );
895                     }
896                     break;
897                 case '*':
898                     {
899                         m_aCurToken.eType    = TMULTIPLY;
900                         m_aCurToken.cMathChar = MS_MULTIPLY;
901                         m_aCurToken.nGroup       = TGPRODUCT;
902                         m_aCurToken.nLevel       = 0;
903                         m_aCurToken.aText.AssignAscii( "*" );
904                     }
905                     break;
906                 case '+':
907                     {
908                         if (m_aBufferString.Copy( nRealStart, 2 ).
909                                 EqualsAscii( "+-" ))
910                         {
911                             m_aCurToken.eType    = TPLUSMINUS;
912                             m_aCurToken.cMathChar = MS_PLUSMINUS;
913                             m_aCurToken.nGroup       = TGUNOPER | TGSUM;
914                             m_aCurToken.nLevel       = 5;
915                             m_aCurToken.aText.AssignAscii( "+-" );
916 
917                             rnEndPos = nRealStart + 2;
918                         }
919                         else
920                         {
921                             m_aCurToken.eType    = TPLUS;
922                             m_aCurToken.cMathChar = MS_PLUS;
923                             m_aCurToken.nGroup       = TGUNOPER | TGSUM;
924                             m_aCurToken.nLevel       = 5;
925                             m_aCurToken.aText.AssignAscii( "+" );
926                         }
927                     }
928                     break;
929                 case '-':
930                     {
931                         if (m_aBufferString.Copy( nRealStart, 2 ).
932                                 EqualsAscii( "-+" ))
933                         {
934                             m_aCurToken.eType    = TMINUSPLUS;
935                             m_aCurToken.cMathChar = MS_MINUSPLUS;
936                             m_aCurToken.nGroup       = TGUNOPER | TGSUM;
937                             m_aCurToken.nLevel       = 5;
938                             m_aCurToken.aText.AssignAscii( "-+" );
939 
940                             rnEndPos = nRealStart + 2;
941                         }
942                         else
943                         {
944                             m_aCurToken.eType    = TMINUS;
945                             m_aCurToken.cMathChar = MS_MINUS;
946                             m_aCurToken.nGroup       = TGUNOPER | TGSUM;
947                             m_aCurToken.nLevel       = 5;
948                             m_aCurToken.aText.AssignAscii( "-" );
949                         }
950                     }
951                     break;
952                 case '.':
953                     {
954                         // for compatibility with SO5.2
955                         // texts like .34 ...56 ... h ...78..90
956                         // will be treated as numbers
957                         m_aCurToken.eType     = TNUMBER;
958                         m_aCurToken.cMathChar = '\0';
959                         m_aCurToken.nGroup       = 0;
960                         m_aCurToken.nLevel    = 5;
961 
962                         xub_StrLen nTxtStart = m_nBufferIndex;
963                         sal_Unicode cChar;
964                         do
965                         {
966                             cChar = m_aBufferString.GetChar( ++m_nBufferIndex );
967                         }
968                         while ( cChar == '.' || IsDigit( cChar ) );
969 
970                         m_aCurToken.aText = m_aBufferString.Copy( sal::static_int_cast< xub_StrLen >(nTxtStart),
971                                                             sal::static_int_cast< xub_StrLen >(m_nBufferIndex - nTxtStart) );
972                         aRes.EndPos = m_nBufferIndex;
973                     }
974                     break;
975                 case '/':
976                     {
977                         m_aCurToken.eType    = TDIVIDEBY;
978                         m_aCurToken.cMathChar = MS_SLASH;
979                         m_aCurToken.nGroup       = TGPRODUCT;
980                         m_aCurToken.nLevel       = 0;
981                         m_aCurToken.aText.AssignAscii( "/" );
982                     }
983                     break;
984                 case '=':
985                     {
986                         m_aCurToken.eType    = TASSIGN;
987                         m_aCurToken.cMathChar = MS_ASSIGN;
988                         m_aCurToken.nGroup       = TGRELATION;
989                         m_aCurToken.nLevel       = 0;
990                         m_aCurToken.aText.AssignAscii( "=" );
991                     }
992                     break;
993                 default:
994                     bHandled = sal_False;
995             }
996         }
997     }
998     else
999         bHandled = sal_False;
1000 
1001     if (!bHandled)
1002     {
1003         m_aCurToken.eType      = TCHARACTER;
1004         m_aCurToken.cMathChar  = '\0';
1005         m_aCurToken.nGroup     = 0;
1006         m_aCurToken.nLevel     = 5;
1007         m_aCurToken.aText      = m_aBufferString.Copy( nRealStart, 1 );
1008 
1009         aRes.EndPos = nRealStart + 1;
1010     }
1011 
1012     if (TEND != m_aCurToken.eType)
1013         m_nBufferIndex = sal::static_int_cast< xub_StrLen >(aRes.EndPos);
1014 }
1015 
1016 
1017 ////////////////////////////////////////
1018 // grammar
1019 //
1020 
1021 
1022 void SmParser::Table()
1023 {
1024     SmNodeArray  LineArray;
1025 
1026     Line();
1027     while (m_aCurToken.eType == TNEWLINE)
1028     {
1029         NextToken();
1030         Line();
1031     }
1032 
1033     if (m_aCurToken.eType != TEND)
1034         Error(PE_UNEXPECTED_CHAR);
1035 
1036     sal_uLong n = m_aNodeStack.Count();
1037 
1038     LineArray.resize(n);
1039 
1040     for (sal_uLong i = 0; i < n; i++)
1041         LineArray[n - (i + 1)] = m_aNodeStack.Pop();
1042 
1043     SmStructureNode *pSNode = new SmTableNode(m_aCurToken);
1044     pSNode->SetSubNodes(LineArray);
1045     m_aNodeStack.Push(pSNode);
1046 }
1047 
1048 
1049 void SmParser::Align()
1050     // parse alignment info (if any), then go on with rest of expression
1051 {
1052     SmStructureNode *pSNode = 0;
1053     sal_Bool    bNeedGroupClose = sal_False;
1054 
1055     if (TokenInGroup(TGALIGN))
1056     {
1057         if (CONVERT_40_TO_50 == GetConversion())
1058             // encapsulate expression to be aligned in group braces
1059             // (here group-open brace)
1060         {   Insert('{', GetTokenIndex());
1061             bNeedGroupClose = sal_True;
1062 
1063             // get first valid align statement in sequence
1064             // (the dominant one in 4.0) and erase all others (especially old
1065             // discarded tokens) from command string.
1066             while (TokenInGroup(TGALIGN))
1067             {
1068                 if (TokenInGroup(TGDISCARDED) || pSNode)
1069                 {
1070                     m_nBufferIndex = GetTokenIndex();
1071                     m_aBufferString.Erase(m_nBufferIndex, m_aCurToken.aText.Len());
1072                 }
1073                 else
1074                     pSNode = new SmAlignNode(m_aCurToken);
1075 
1076                 NextToken();
1077             }
1078         }
1079         else
1080         {
1081             pSNode = new SmAlignNode(m_aCurToken);
1082 
1083             NextToken();
1084 
1085             // allow for just one align statement in 5.0
1086             if (CONVERT_40_TO_50 != GetConversion() && TokenInGroup(TGALIGN))
1087             {   Error(PE_DOUBLE_ALIGN);
1088                 return;
1089             }
1090         }
1091     }
1092 
1093     Expression();
1094 
1095     if (bNeedGroupClose)
1096         Insert('}', GetTokenIndex());
1097 
1098     if (pSNode)
1099     {   pSNode->SetSubNodes(m_aNodeStack.Pop(), 0);
1100         m_aNodeStack.Push(pSNode);
1101     }
1102 }
1103 
1104 
1105 void SmParser::Line()
1106 {
1107     sal_uInt16  n = 0;
1108     SmNodeArray  ExpressionArray;
1109 
1110     ExpressionArray.resize(n);
1111 
1112     // start with single expression that may have an alignment statement
1113     // (and go on with expressions that must not have alignment
1114     // statements in 'while' loop below. See also 'Expression()'.)
1115     if (m_aCurToken.eType != TEND  &&  m_aCurToken.eType != TNEWLINE)
1116     {   Align();
1117         ExpressionArray.resize(++n);
1118         ExpressionArray[n - 1] = m_aNodeStack.Pop();
1119     }
1120 
1121     while (m_aCurToken.eType != TEND  &&  m_aCurToken.eType != TNEWLINE)
1122     {   if (CONVERT_40_TO_50 != GetConversion())
1123             Expression();
1124         else
1125             Align();
1126         ExpressionArray.resize(++n);
1127         ExpressionArray[n - 1] = m_aNodeStack.Pop();
1128     }
1129 
1130     SmStructureNode *pSNode = new SmLineNode(m_aCurToken);
1131     pSNode->SetSubNodes(ExpressionArray);
1132     m_aNodeStack.Push(pSNode);
1133 }
1134 
1135 
1136 void SmParser::Expression()
1137 {
1138     sal_Bool bUseExtraSpaces = sal_True;
1139     SmNode *pNode = m_aNodeStack.Pop();
1140     if (pNode)
1141     {
1142         if (pNode->GetToken().eType == TNOSPACE)
1143             bUseExtraSpaces = sal_False;
1144         else
1145             m_aNodeStack.Push(pNode);  // push the node from above again (now to be used as argument to this current 'nospace' node)
1146     }
1147 
1148     sal_uInt16       n = 0;
1149     SmNodeArray  RelationArray;
1150 
1151     RelationArray.resize(n);
1152 
1153     Relation();
1154     RelationArray.resize(++n);
1155     RelationArray[n - 1] = m_aNodeStack.Pop();
1156 
1157     while (m_aCurToken.nLevel >= 4)
1158     {   Relation();
1159         RelationArray.resize(++n);
1160         RelationArray[n - 1] = m_aNodeStack.Pop();
1161     }
1162 
1163     SmExpressionNode *pSNode = new SmExpressionNode(m_aCurToken);
1164     pSNode->SetSubNodes(RelationArray);
1165     pSNode->SetUseExtraSpaces(bUseExtraSpaces);
1166     m_aNodeStack.Push(pSNode);
1167 }
1168 
1169 
1170 void SmParser::Relation()
1171 {
1172     Sum();
1173     while (TokenInGroup(TGRELATION))
1174     {
1175         SmStructureNode *pSNode  = new SmBinHorNode(m_aCurToken);
1176         SmNode *pFirst = m_aNodeStack.Pop();
1177 
1178         OpSubSup();
1179         SmNode *pSecond = m_aNodeStack.Pop();
1180 
1181         Sum();
1182 
1183         pSNode->SetSubNodes(pFirst, pSecond, m_aNodeStack.Pop());
1184         m_aNodeStack.Push(pSNode);
1185     }
1186 }
1187 
1188 
1189 void SmParser::Sum()
1190 {
1191     Product();
1192     while (TokenInGroup(TGSUM))
1193     {
1194         SmStructureNode *pSNode  = new SmBinHorNode(m_aCurToken);
1195         SmNode *pFirst = m_aNodeStack.Pop();
1196 
1197         OpSubSup();
1198         SmNode *pSecond = m_aNodeStack.Pop();
1199 
1200         Product();
1201 
1202         pSNode->SetSubNodes(pFirst, pSecond, m_aNodeStack.Pop());
1203         m_aNodeStack.Push(pSNode);
1204     }
1205 }
1206 
1207 
1208 void SmParser::Product()
1209 {
1210     Power();
1211 
1212     while (TokenInGroup(TGPRODUCT))
1213     {   SmStructureNode *pSNode;
1214         SmNode *pFirst = m_aNodeStack.Pop(),
1215                *pOper;
1216         sal_Bool bSwitchArgs = sal_False;
1217 
1218         SmTokenType eType = m_aCurToken.eType;
1219         switch (eType)
1220         {
1221             case TOVER:
1222                 pSNode = new SmBinVerNode(m_aCurToken);
1223                 pOper = new SmRectangleNode(m_aCurToken);
1224                 NextToken();
1225                 break;
1226 
1227             case TBOPER:
1228                 pSNode = new SmBinHorNode(m_aCurToken);
1229 
1230                 NextToken();
1231 
1232                 GlyphSpecial();
1233                 pOper = m_aNodeStack.Pop();
1234                 break;
1235 
1236             case TOVERBRACE :
1237             case TUNDERBRACE :
1238                 pSNode = new SmVerticalBraceNode(m_aCurToken);
1239                 pOper = new SmMathSymbolNode(m_aCurToken);
1240 
1241                 NextToken();
1242                 break;
1243 
1244             case TWIDEBACKSLASH:
1245             case TWIDESLASH:
1246             {
1247                 SmBinDiagonalNode *pSTmp = new SmBinDiagonalNode(m_aCurToken);
1248                 pSTmp->SetAscending(eType == TWIDESLASH);
1249                 pSNode = pSTmp;
1250 
1251                 pOper = new SmPolyLineNode(m_aCurToken);
1252                 NextToken();
1253 
1254                 bSwitchArgs =sal_True;
1255                 break;
1256             }
1257 
1258             default:
1259                 pSNode = new SmBinHorNode(m_aCurToken);
1260 
1261                 OpSubSup();
1262                 pOper = m_aNodeStack.Pop();
1263         }
1264 
1265         Power();
1266 
1267         if (bSwitchArgs)
1268             //! vgl siehe SmBinDiagonalNode::Arrange
1269             pSNode->SetSubNodes(pFirst, m_aNodeStack.Pop(), pOper);
1270         else
1271             pSNode->SetSubNodes(pFirst, pOper, m_aNodeStack.Pop());
1272         m_aNodeStack.Push(pSNode);
1273     }
1274 }
1275 
1276 
1277 void SmParser::SubSup(sal_uLong nActiveGroup)
1278 {
1279     DBG_ASSERT(nActiveGroup == TGPOWER  ||  nActiveGroup == TGLIMIT,
1280                "Sm: falsche Tokengruppe");
1281 
1282     if (!TokenInGroup(nActiveGroup))
1283         // already finish
1284         return;
1285 
1286     SmSubSupNode *pNode = new SmSubSupNode(m_aCurToken);
1287     //! Of course 'm_aCurToken' is just the first sub-/supscript token.
1288     //! It should be of no further interest. The positions of the
1289     //! sub-/supscripts will be identified by the corresponding subnodes
1290     //! index in the 'aSubNodes' array (enum value from 'SmSubSup').
1291 
1292     pNode->SetUseLimits(nActiveGroup == TGLIMIT);
1293 
1294     // initialize subnodes array
1295     SmNodeArray  aSubNodes;
1296     aSubNodes.resize(1 + SUBSUP_NUM_ENTRIES);
1297     aSubNodes[0] = m_aNodeStack.Pop();
1298     for (sal_uInt16 i = 1;  i < aSubNodes.size();  i++)
1299         aSubNodes[i] = NULL;
1300 
1301     // process all sub-/supscripts
1302     int  nIndex = 0;
1303     while (TokenInGroup(nActiveGroup))
1304     {   SmTokenType  eType (m_aCurToken.eType);
1305 
1306         // skip sub-/supscript token
1307         NextToken();
1308 
1309         // get sub-/supscript node on top of stack
1310         if (eType == TFROM  ||  eType == TTO)
1311         {
1312             // parse limits in old 4.0 and 5.0 style
1313             Relation();
1314         }
1315         else
1316             Term();
1317 
1318         switch (eType)
1319         {   case TRSUB :    nIndex = (int) RSUB;    break;
1320             case TRSUP :    nIndex = (int) RSUP;    break;
1321             case TFROM :
1322             case TCSUB :    nIndex = (int) CSUB;    break;
1323             case TTO :
1324             case TCSUP :    nIndex = (int) CSUP;    break;
1325             case TLSUB :    nIndex = (int) LSUB;    break;
1326             case TLSUP :    nIndex = (int) LSUP;    break;
1327             default :
1328                 DBG_ASSERT(sal_False, "Sm: unbekannter Fall");
1329         }
1330         nIndex++;
1331         DBG_ASSERT(1 <= nIndex  &&  nIndex <= 1 + SUBSUP_NUM_ENTRIES,
1332                    "SmParser::Power() : sub-/supscript index falsch");
1333 
1334         // set sub-/supscript if not already done
1335         if (aSubNodes[nIndex] != NULL)
1336             Error(PE_DOUBLE_SUBSUPSCRIPT);
1337         aSubNodes[nIndex] = m_aNodeStack.Pop();
1338     }
1339 
1340     pNode->SetSubNodes(aSubNodes);
1341     m_aNodeStack.Push(pNode);
1342 }
1343 
1344 
1345 void SmParser::OpSubSup()
1346 {
1347     // push operator symbol
1348     m_aNodeStack.Push(new SmMathSymbolNode(m_aCurToken));
1349     // skip operator token
1350     NextToken();
1351     // get sub- supscripts if any
1352     if (TokenInGroup(TGPOWER))
1353         SubSup(TGPOWER);
1354 }
1355 
1356 
1357 void SmParser::Power()
1358 {
1359     // get body for sub- supscripts on top of stack
1360     Term();
1361 
1362     SubSup(TGPOWER);
1363 }
1364 
1365 
1366 void SmParser::Blank()
1367 {
1368     DBG_ASSERT(TokenInGroup(TGBLANK), "Sm : falsches Token");
1369     SmBlankNode *pBlankNode = new SmBlankNode(m_aCurToken);
1370 
1371     while (TokenInGroup(TGBLANK))
1372     {
1373         pBlankNode->IncreaseBy(m_aCurToken);
1374         NextToken();
1375     }
1376 
1377     // Blanks am Zeilenende ignorieren wenn die entsprechende Option gesetzt ist
1378     if ( m_aCurToken.eType == TNEWLINE ||
1379              (m_aCurToken.eType == TEND && SM_MOD()->GetConfig()->IsIgnoreSpacesRight()) )
1380     {
1381         pBlankNode->Clear();
1382     }
1383 
1384     m_aNodeStack.Push(pBlankNode);
1385 }
1386 
1387 
1388 void SmParser::Term()
1389 {
1390     switch (m_aCurToken.eType)
1391     {
1392         case TESCAPE :
1393             Escape();
1394             break;
1395 
1396         case TNOSPACE :
1397         case TLGROUP :
1398         {
1399             bool bNoSpace = m_aCurToken.eType == TNOSPACE;
1400             if (bNoSpace)   // push 'no space' node and continue to parse expression
1401             {
1402                 m_aNodeStack.Push(new SmExpressionNode(m_aCurToken));
1403                 NextToken();
1404             }
1405             if (m_aCurToken.eType != TLGROUP)
1406             {
1407                 m_aNodeStack.Pop();    // get rid of the 'no space' node pushed above
1408                 Term();
1409             }
1410             else
1411             {
1412                 NextToken();
1413 
1414                 // allow for empty group
1415                 if (m_aCurToken.eType == TRGROUP)
1416                 {
1417                     if (bNoSpace)   // get rid of the 'no space' node pushed above
1418                         m_aNodeStack.Pop();
1419                     SmStructureNode *pSNode = new SmExpressionNode(m_aCurToken);
1420                     pSNode->SetSubNodes(NULL, NULL);
1421                     m_aNodeStack.Push(pSNode);
1422 
1423                     NextToken();
1424                 }
1425                 else    // go as usual
1426                 {
1427                     Align();
1428                     if (m_aCurToken.eType != TRGROUP)
1429                         Error(PE_RGROUP_EXPECTED);
1430                     else
1431                         NextToken();
1432                 }
1433             }
1434         }
1435         break;
1436 
1437         case TLEFT :
1438             Brace();
1439             break;
1440 
1441         case TBLANK :
1442         case TSBLANK :
1443             Blank();
1444             break;
1445 
1446         case TTEXT :
1447             m_aNodeStack.Push(new SmTextNode(m_aCurToken, FNT_TEXT));
1448             NextToken();
1449             break;
1450         case TIDENT :
1451         case TCHARACTER :
1452             m_aNodeStack.Push(new SmTextNode(m_aCurToken, FNT_VARIABLE));
1453             NextToken();
1454             break;
1455         case TNUMBER :
1456             m_aNodeStack.Push(new SmTextNode(m_aCurToken, FNT_NUMBER));
1457             NextToken();
1458             break;
1459 
1460         case TLEFTARROW :
1461         case TRIGHTARROW :
1462         case TUPARROW :
1463         case TDOWNARROW :
1464         case TSETN :
1465         case TSETZ :
1466         case TSETQ :
1467         case TSETR :
1468         case TSETC :
1469         case THBAR :
1470         case TLAMBDABAR :
1471         case TCIRC :
1472         case TDRARROW :
1473         case TDLARROW :
1474         case TDLRARROW :
1475         case TBACKEPSILON :
1476         case TALEPH :
1477         case TIM :
1478         case TRE :
1479         case TWP :
1480         case TEMPTYSET :
1481         case TINFINITY :
1482         case TEXISTS :
1483         case TFORALL :
1484         case TPARTIAL :
1485         case TNABLA :
1486         case TTOWARD :
1487         case TDOTSAXIS :
1488         case TDOTSDIAG :
1489         case TDOTSDOWN :
1490         case TDOTSLOW :
1491         case TDOTSUP :
1492         case TDOTSVERT :
1493             m_aNodeStack.Push(new SmMathSymbolNode(m_aCurToken));
1494             NextToken();
1495             break;
1496 
1497         case TPLACE:
1498             m_aNodeStack.Push(new SmPlaceNode(m_aCurToken));
1499             NextToken();
1500             break;
1501 
1502         case TSPECIAL:
1503             Special();
1504             break;
1505 
1506         case TBINOM:
1507             Binom();
1508             break;
1509 
1510         case TSTACK:
1511             Stack();
1512             break;
1513 
1514         case TMATRIX:
1515             Matrix();
1516             break;
1517 
1518         default:
1519             if (TokenInGroup(TGLBRACES))
1520             {   Brace();
1521             }
1522             else if (TokenInGroup(TGOPER))
1523             {   Operator();
1524             }
1525             else if (TokenInGroup(TGUNOPER))
1526             {   UnOper();
1527             }
1528             else if (    TokenInGroup(TGATTRIBUT)
1529                      ||  TokenInGroup(TGFONTATTR))
1530             {   SmStructureNodeArray  aArray;
1531 
1532                 sal_Bool    bIsAttr;
1533                 sal_uInt16  n = 0;
1534                 while (sal_True == (bIsAttr = TokenInGroup(TGATTRIBUT))
1535                        ||  TokenInGroup(TGFONTATTR))
1536                 {   aArray.resize(n + 1);
1537 
1538                     if (bIsAttr)
1539                         Attribut();
1540                     else
1541                         FontAttribut();
1542 
1543                     // check if casting in following line is ok
1544                     DBG_ASSERT(!m_aNodeStack.Top()->IsVisible(), "Sm : Ooops...");
1545 
1546                     aArray[n] = (SmStructureNode *) m_aNodeStack.Pop();
1547                     n++;
1548                 }
1549 
1550                 Power();
1551 
1552                 SmNode *pFirstNode = m_aNodeStack.Pop();
1553                 while (n > 0)
1554                 {   aArray[n - 1]->SetSubNodes(0, pFirstNode);
1555                     pFirstNode = aArray[n - 1];
1556                     n--;
1557                 }
1558                 m_aNodeStack.Push(pFirstNode);
1559             }
1560             else if (TokenInGroup(TGFUNCTION))
1561             {   if (CONVERT_40_TO_50 != GetConversion())
1562                 {   Function();
1563                 }
1564                 else    // encapsulate old 4.0 style parsing in braces
1565                 {
1566                     // insert opening brace
1567                     Insert('{', GetTokenIndex());
1568 
1569                     //
1570                     // parse in 4.0 style
1571                     //
1572                     Function();
1573 
1574                     SmNode *pFunc = m_aNodeStack.Pop();
1575 
1576                     if (m_aCurToken.eType == TLPARENT)
1577                     {   Term();
1578                     }
1579                     else
1580                     {   Align();
1581                     }
1582 
1583                     // insert closing brace
1584                     Insert('}', GetTokenIndex());
1585 
1586                     SmStructureNode *pSNode = new SmExpressionNode(pFunc->GetToken());
1587                     pSNode->SetSubNodes(pFunc, m_aNodeStack.Pop());
1588                     m_aNodeStack.Push(pSNode);
1589                 }
1590             }
1591             else
1592                 Error(PE_UNEXPECTED_CHAR);
1593     }
1594 }
1595 
1596 
1597 void SmParser::Escape()
1598 {
1599     NextToken();
1600 
1601     sal_Unicode cChar;
1602     switch (m_aCurToken.eType)
1603     {   case TLPARENT :     cChar = MS_LPARENT;     break;
1604         case TRPARENT :     cChar = MS_RPARENT;     break;
1605         case TLBRACKET :    cChar = MS_LBRACKET;    break;
1606         case TRBRACKET :    cChar = MS_RBRACKET;    break;
1607         case TLDBRACKET :   cChar = MS_LDBRACKET;   break;
1608         case TRDBRACKET :   cChar = MS_RDBRACKET;   break;
1609         case TLBRACE :
1610         case TLGROUP :      cChar = MS_LBRACE;      break;
1611         case TRBRACE :
1612         case TRGROUP :      cChar = MS_RBRACE;      break;
1613         case TLANGLE :      cChar = MS_LANGLE;      break;
1614         case TRANGLE :      cChar = MS_RANGLE;      break;
1615         case TLCEIL :       cChar = MS_LCEIL;       break;
1616         case TRCEIL :       cChar = MS_RCEIL;       break;
1617         case TLFLOOR :      cChar = MS_LFLOOR;      break;
1618         case TRFLOOR :      cChar = MS_RFLOOR;      break;
1619         case TLLINE :
1620         case TRLINE :       cChar = MS_LINE;        break;
1621         case TLDLINE :
1622         case TRDLINE :      cChar = MS_DLINE;       break;
1623         default:
1624             Error(PE_UNEXPECTED_TOKEN);
1625     }
1626 
1627     SmNode *pNode = new SmMathSymbolNode(m_aCurToken);
1628     m_aNodeStack.Push(pNode);
1629 
1630     NextToken();
1631 }
1632 
1633 
1634 void SmParser::Operator()
1635 {
1636     if (TokenInGroup(TGOPER))
1637     {   SmStructureNode *pSNode = new SmOperNode(m_aCurToken);
1638 
1639         // put operator on top of stack
1640         Oper();
1641 
1642         if (TokenInGroup(TGLIMIT) || TokenInGroup(TGPOWER))
1643             SubSup(m_aCurToken.nGroup);
1644         SmNode *pOperator = m_aNodeStack.Pop();
1645 
1646         // get argument
1647         Power();
1648 
1649         pSNode->SetSubNodes(pOperator, m_aNodeStack.Pop());
1650         m_aNodeStack.Push(pSNode);
1651     }
1652 }
1653 
1654 
1655 void SmParser::Oper()
1656 {
1657     SmTokenType  eType (m_aCurToken.eType);
1658     SmNode      *pNode = NULL;
1659 
1660     switch (eType)
1661     {
1662         case TSUM :
1663         case TPROD :
1664         case TCOPROD :
1665         case TINT :
1666         case TIINT :
1667         case TIIINT :
1668         case TLINT :
1669         case TLLINT :
1670         case TLLLINT :
1671             pNode = new SmMathSymbolNode(m_aCurToken);
1672             break;
1673 
1674         case TLIM :
1675         case TLIMSUP :
1676         case TLIMINF :
1677             {
1678                 const sal_Char* pLim = 0;
1679                 switch (eType)
1680                 {
1681                     case TLIM :     pLim = "lim";       break;
1682                     case TLIMSUP :  pLim = "lim sup";   break;
1683                     case TLIMINF :  pLim = "lim inf";   break;
1684                     default:
1685                         break;
1686                 }
1687                 if( pLim )
1688                     m_aCurToken.aText.AssignAscii( pLim );
1689                 pNode = new SmTextNode(m_aCurToken, FNT_TEXT);
1690             }
1691             break;
1692 
1693         case TOVERBRACE :
1694         case TUNDERBRACE :
1695                 pNode = new SmMathSymbolNode(m_aCurToken);
1696             break;
1697 
1698         case TOPER :
1699             NextToken();
1700 
1701             DBG_ASSERT(m_aCurToken.eType == TSPECIAL, "Sm: falsches Token");
1702             pNode = new SmGlyphSpecialNode(m_aCurToken);
1703             break;
1704 
1705         default :
1706             DBG_ASSERT(0, "Sm: unbekannter Fall");
1707     }
1708     m_aNodeStack.Push(pNode);
1709 
1710     NextToken();
1711 }
1712 
1713 
1714 void SmParser::UnOper()
1715 {
1716     DBG_ASSERT(TokenInGroup(TGUNOPER), "Sm: falsches Token");
1717 
1718     SmToken      aNodeToken = m_aCurToken;
1719     SmTokenType  eType      = m_aCurToken.eType;
1720     sal_Bool     bIsPostfix = eType == TFACT;
1721 
1722     SmStructureNode *pSNode;
1723     SmNode *pOper   = 0,
1724            *pExtra  = 0,
1725            *pArg;
1726 
1727     switch (eType)
1728     {
1729         case TABS :
1730         case TSQRT :
1731             NextToken();
1732             break;
1733 
1734         case TNROOT :
1735             NextToken();
1736             Power();
1737             pExtra = m_aNodeStack.Pop();
1738             break;
1739 
1740         case TUOPER :
1741             NextToken();
1742             GlyphSpecial();
1743             pOper = m_aNodeStack.Pop();
1744             break;
1745 
1746         case TPLUS :
1747         case TMINUS :
1748         case TPLUSMINUS :
1749         case TMINUSPLUS :
1750         case TNEG :
1751         case TFACT :
1752             OpSubSup();
1753             pOper = m_aNodeStack.Pop();
1754             break;
1755 
1756         default :
1757             Error(PE_UNOPER_EXPECTED);
1758     }
1759 
1760     // get argument
1761     Power();
1762     pArg = m_aNodeStack.Pop();
1763 
1764     if (eType == TABS)
1765     {   pSNode = new SmBraceNode(aNodeToken);
1766         pSNode->SetScaleMode(SCALE_HEIGHT);
1767 
1768         // build nodes for left & right lines
1769         // (text, group, level of the used token are of no interrest here)
1770         // we'll use row & column of the keyword for abs
1771         aNodeToken.eType = TABS;
1772         //
1773         aNodeToken.cMathChar = MS_LINE;
1774         SmNode* pLeft = new SmMathSymbolNode(aNodeToken);
1775         //
1776         aNodeToken.cMathChar = MS_LINE;
1777         SmNode* pRight = new SmMathSymbolNode(aNodeToken);
1778 
1779         pSNode->SetSubNodes(pLeft, pArg, pRight);
1780     }
1781     else if (eType == TSQRT  ||  eType == TNROOT)
1782     {   pSNode = new SmRootNode(aNodeToken);
1783         pOper = new SmRootSymbolNode(aNodeToken);
1784         pSNode->SetSubNodes(pExtra, pOper, pArg);
1785     }
1786     else
1787     {   pSNode = new SmUnHorNode(aNodeToken);
1788 
1789         if (bIsPostfix)
1790             pSNode->SetSubNodes(pArg, pOper);
1791         else
1792             // prefix operator
1793             pSNode->SetSubNodes(pOper, pArg);
1794     }
1795 
1796     m_aNodeStack.Push(pSNode);
1797 }
1798 
1799 
1800 void SmParser::Attribut()
1801 {
1802     DBG_ASSERT(TokenInGroup(TGATTRIBUT), "Sm: falsche Tokengruppe");
1803 
1804     SmStructureNode *pSNode = new SmAttributNode(m_aCurToken);
1805     SmNode      *pAttr;
1806     SmScaleMode  eScaleMode = SCALE_NONE;
1807 
1808     // get appropriate node for the attribut itself
1809     switch (m_aCurToken.eType)
1810     {   case TUNDERLINE :
1811         case TOVERLINE :
1812         case TOVERSTRIKE :
1813             pAttr = new SmRectangleNode(m_aCurToken);
1814             eScaleMode = SCALE_WIDTH;
1815             break;
1816 
1817         case TWIDEVEC :
1818         case TWIDEHAT :
1819         case TWIDETILDE :
1820             pAttr = new SmMathSymbolNode(m_aCurToken);
1821             eScaleMode = SCALE_WIDTH;
1822             break;
1823 
1824         default :
1825             pAttr = new SmMathSymbolNode(m_aCurToken);
1826     }
1827 
1828     NextToken();
1829 
1830     pSNode->SetSubNodes(pAttr, 0);
1831     pSNode->SetScaleMode(eScaleMode);
1832     m_aNodeStack.Push(pSNode);
1833 }
1834 
1835 
1836 void SmParser::FontAttribut()
1837 {
1838     DBG_ASSERT(TokenInGroup(TGFONTATTR), "Sm: falsche Tokengruppe");
1839 
1840     switch (m_aCurToken.eType)
1841     {
1842         case TITALIC :
1843         case TNITALIC :
1844         case TBOLD :
1845         case TNBOLD :
1846         case TPHANTOM :
1847             m_aNodeStack.Push(new SmFontNode(m_aCurToken));
1848             NextToken();
1849             break;
1850 
1851         case TSIZE :
1852             FontSize();
1853             break;
1854 
1855         case TFONT :
1856             Font();
1857             break;
1858 
1859         case TCOLOR :
1860             Color();
1861             break;
1862 
1863         default :
1864             DBG_ASSERT(0, "Sm: unbekannter Fall");
1865     }
1866 }
1867 
1868 
1869 void SmParser::Color()
1870 {
1871     DBG_ASSERT(m_aCurToken.eType == TCOLOR, "Sm : Ooops...");
1872 
1873     // last color rules, get that one
1874     SmToken  aToken;
1875     do
1876     {   NextToken();
1877 
1878         if (TokenInGroup(TGCOLOR))
1879         {   aToken = m_aCurToken;
1880             NextToken();
1881         }
1882         else
1883             Error(PE_COLOR_EXPECTED);
1884     } while (m_aCurToken.eType == TCOLOR);
1885 
1886     m_aNodeStack.Push(new SmFontNode(aToken));
1887 }
1888 
1889 
1890 void SmParser::Font()
1891 {
1892     DBG_ASSERT(m_aCurToken.eType == TFONT, "Sm : Ooops...");
1893 
1894     // last font rules, get that one
1895     SmToken  aToken;
1896     do
1897     {   NextToken();
1898 
1899         if (TokenInGroup(TGFONT))
1900         {   aToken = m_aCurToken;
1901             NextToken();
1902         }
1903         else
1904             Error(PE_FONT_EXPECTED);
1905     } while (m_aCurToken.eType == TFONT);
1906 
1907     m_aNodeStack.Push(new SmFontNode(aToken));
1908 }
1909 
1910 
1911 // gets number used as arguments in Math formulas (e.g. 'size' command)
1912 // Format: no negative numbers, must start with a digit, no exponent notation, ...
1913 sal_Bool lcl_IsNumber(const UniString& rText)
1914 {
1915     sal_Bool bPoint = sal_False;
1916     const sal_Unicode* pBuffer = rText.GetBuffer();
1917     for(xub_StrLen nPos = 0; nPos < rText.Len(); nPos++, pBuffer++)
1918     {
1919         const sal_Unicode cChar = *pBuffer;
1920         if(cChar == '.')
1921         {
1922             if(bPoint)
1923                 return sal_False;
1924             else
1925                 bPoint = sal_True;
1926         }
1927         else if ( !IsDigit( cChar ) )
1928             return sal_False;
1929     }
1930     return sal_True;
1931 }
1932 
1933 void SmParser::FontSize()
1934 {
1935     DBG_ASSERT(m_aCurToken.eType == TSIZE, "Sm : Ooops...");
1936 
1937     sal_uInt16   Type;
1938     SmFontNode *pFontNode = new SmFontNode(m_aCurToken);
1939 
1940     NextToken();
1941 
1942     switch (m_aCurToken.eType)
1943     {
1944         case TNUMBER:   Type = FNTSIZ_ABSOLUT;  break;
1945         case TPLUS:     Type = FNTSIZ_PLUS;     break;
1946         case TMINUS:    Type = FNTSIZ_MINUS;    break;
1947         case TMULTIPLY: Type = FNTSIZ_MULTIPLY; break;
1948         case TDIVIDEBY: Type = FNTSIZ_DIVIDE;   break;
1949 
1950         default:
1951             delete pFontNode;
1952             Error(PE_SIZE_EXPECTED);
1953             return;
1954     }
1955 
1956     if (Type != FNTSIZ_ABSOLUT)
1957     {
1958         NextToken();
1959         if (m_aCurToken.eType != TNUMBER)
1960         {
1961             delete pFontNode;
1962             Error(PE_SIZE_EXPECTED);
1963             return;
1964         }
1965     }
1966 
1967     // get number argument
1968     Fraction  aValue( 1L );
1969     if (lcl_IsNumber( m_aCurToken.aText ))
1970     {
1971         double    fTmp;
1972         if ((fTmp = m_aCurToken.aText.ToDouble()) != 0.0)
1973         {
1974             aValue = fTmp;
1975 
1976             //!! keep the numerator and denominator from being to large
1977             //!! otherwise ongoing multiplications may result in overflows
1978             //!! (for example in SmNode::SetFontSize the font size calculated
1979             //!! may become 0 because of this!!! Happens e.g. for ftmp = 2.9 with Linux
1980             //!! or ftmp = 1.11111111111111111... (11/9) on every platform.)
1981             if (aValue.GetDenominator() > 1000)
1982             {
1983                 long nNum   = aValue.GetNumerator();
1984                 long nDenom = aValue.GetDenominator();
1985                 while (nDenom > 1000)
1986                 {
1987                     nNum    /= 10;
1988                     nDenom  /= 10;
1989                 }
1990                 aValue = Fraction( nNum, nDenom );
1991             }
1992         }
1993     }
1994 
1995     NextToken();
1996 
1997     pFontNode->SetSizeParameter(aValue, Type);
1998     m_aNodeStack.Push(pFontNode);
1999 }
2000 
2001 
2002 void SmParser::Brace()
2003 {
2004     DBG_ASSERT(m_aCurToken.eType == TLEFT  ||  TokenInGroup(TGLBRACES),
2005         "Sm: kein Klammer Ausdruck");
2006 
2007     SmStructureNode *pSNode  = new SmBraceNode(m_aCurToken);
2008     SmNode *pBody   = 0,
2009            *pLeft   = 0,
2010            *pRight  = 0;
2011     SmScaleMode   eScaleMode = SCALE_NONE;
2012     SmParseError  eError     = PE_NONE;
2013 
2014     if (m_aCurToken.eType == TLEFT)
2015     {   NextToken();
2016 
2017         eScaleMode = SCALE_HEIGHT;
2018 
2019         // check for left bracket
2020         if (TokenInGroup(TGLBRACES) || TokenInGroup(TGRBRACES))
2021         {
2022             pLeft = new SmMathSymbolNode(m_aCurToken);
2023 
2024             NextToken();
2025             Bracebody(sal_True);
2026             pBody = m_aNodeStack.Pop();
2027 
2028             if (m_aCurToken.eType == TRIGHT)
2029             {   NextToken();
2030 
2031                 // check for right bracket
2032                 if (TokenInGroup(TGLBRACES) || TokenInGroup(TGRBRACES))
2033                 {
2034                     pRight = new SmMathSymbolNode(m_aCurToken);
2035                     NextToken();
2036                 }
2037                 else
2038                     eError = PE_RBRACE_EXPECTED;
2039             }
2040             else
2041                 eError = PE_RIGHT_EXPECTED;
2042         }
2043         else
2044             eError = PE_LBRACE_EXPECTED;
2045     }
2046     else
2047     {
2048         if (TokenInGroup(TGLBRACES))
2049         {
2050             pLeft = new SmMathSymbolNode(m_aCurToken);
2051 
2052             NextToken();
2053             Bracebody(sal_False);
2054             pBody = m_aNodeStack.Pop();
2055 
2056             SmTokenType  eExpectedType = TUNKNOWN;
2057             switch (pLeft->GetToken().eType)
2058             {   case TLPARENT :     eExpectedType = TRPARENT;   break;
2059                 case TLBRACKET :    eExpectedType = TRBRACKET;  break;
2060                 case TLBRACE :      eExpectedType = TRBRACE;    break;
2061                 case TLDBRACKET :   eExpectedType = TRDBRACKET; break;
2062                 case TLLINE :       eExpectedType = TRLINE;     break;
2063                 case TLDLINE :      eExpectedType = TRDLINE;    break;
2064                 case TLANGLE :      eExpectedType = TRANGLE;    break;
2065                 case TLFLOOR :      eExpectedType = TRFLOOR;    break;
2066                 case TLCEIL :       eExpectedType = TRCEIL;     break;
2067                 default :
2068                     DBG_ASSERT(0, "Sm: unbekannter Fall");
2069             }
2070 
2071             if (m_aCurToken.eType == eExpectedType)
2072             {
2073                 pRight = new SmMathSymbolNode(m_aCurToken);
2074                 NextToken();
2075             }
2076             else
2077                 eError = PE_PARENT_MISMATCH;
2078         }
2079         else
2080             eError = PE_LBRACE_EXPECTED;
2081     }
2082 
2083     if (eError == PE_NONE)
2084     {   DBG_ASSERT(pLeft,  "Sm: NULL pointer");
2085         DBG_ASSERT(pRight, "Sm: NULL pointer");
2086         pSNode->SetSubNodes(pLeft, pBody, pRight);
2087         pSNode->SetScaleMode(eScaleMode);
2088         m_aNodeStack.Push(pSNode);
2089     }
2090     else
2091     {   delete pSNode;
2092         delete pBody;
2093         delete pLeft;
2094         delete pRight;
2095 
2096         Error(eError);
2097     }
2098 }
2099 
2100 
2101 void SmParser::Bracebody(sal_Bool bIsLeftRight)
2102 {
2103     SmStructureNode *pBody = new SmBracebodyNode(m_aCurToken);
2104     SmNodeArray      aNodes;
2105     sal_uInt16           nNum = 0;
2106 
2107     // get body if any
2108     if (bIsLeftRight)
2109     {
2110         do
2111         {
2112             if (m_aCurToken.eType == TMLINE)
2113             {
2114                 m_aNodeStack.Push(new SmMathSymbolNode(m_aCurToken));
2115                 NextToken();
2116                 nNum++;
2117             }
2118             else if (m_aCurToken.eType != TRIGHT)
2119             {   Align();
2120                 nNum++;
2121 
2122                 if (m_aCurToken.eType != TMLINE  &&  m_aCurToken.eType != TRIGHT)
2123                     Error(PE_RIGHT_EXPECTED);
2124             }
2125         } while (m_aCurToken.eType != TEND  &&  m_aCurToken.eType != TRIGHT);
2126     }
2127     else
2128     {
2129         do
2130         {
2131             if (m_aCurToken.eType == TMLINE)
2132             {
2133                 m_aNodeStack.Push(new SmMathSymbolNode(m_aCurToken));
2134                 NextToken();
2135                 nNum++;
2136             }
2137             else if (!TokenInGroup(TGRBRACES))
2138             {   Align();
2139                 nNum++;
2140 
2141                 if (m_aCurToken.eType != TMLINE  &&  !TokenInGroup(TGRBRACES))
2142                     Error(PE_RBRACE_EXPECTED);
2143             }
2144         } while (m_aCurToken.eType != TEND  &&  !TokenInGroup(TGRBRACES));
2145     }
2146 
2147     // build argument vector in parsing order
2148     aNodes.resize(nNum);
2149     for (sal_uInt16 i = 0;  i < nNum;  i++)
2150         aNodes[nNum - 1 - i] = m_aNodeStack.Pop();
2151 
2152     pBody->SetSubNodes(aNodes);
2153     pBody->SetScaleMode(bIsLeftRight ? SCALE_HEIGHT : SCALE_NONE);
2154     m_aNodeStack.Push(pBody);
2155 }
2156 
2157 
2158 void SmParser::Function()
2159 {
2160     switch (m_aCurToken.eType)
2161     {
2162         case TFUNC:
2163             NextToken();    // skip "FUNC"-statement
2164             // fall through
2165 
2166         case TSIN :
2167         case TCOS :
2168         case TTAN :
2169         case TCOT :
2170         case TASIN :
2171         case TACOS :
2172         case TATAN :
2173         case TACOT :
2174         case TSINH :
2175         case TCOSH :
2176         case TTANH :
2177         case TCOTH :
2178         case TASINH :
2179         case TACOSH :
2180         case TATANH :
2181         case TACOTH :
2182         case TLN :
2183         case TLOG :
2184         case TEXP :
2185             m_aNodeStack.Push(new SmTextNode(m_aCurToken, FNT_FUNCTION));
2186             NextToken();
2187             break;
2188 
2189         default:
2190             Error(PE_FUNC_EXPECTED);
2191     }
2192 }
2193 
2194 
2195 void SmParser::Binom()
2196 {
2197     SmNodeArray  ExpressionArray;
2198     SmStructureNode *pSNode = new SmTableNode(m_aCurToken);
2199 
2200     NextToken();
2201 
2202     Sum();
2203     Sum();
2204 
2205     ExpressionArray.resize(2);
2206 
2207     for (int i = 0;  i < 2;  i++)
2208         ExpressionArray[2 - (i + 1)] = m_aNodeStack.Pop();
2209 
2210     pSNode->SetSubNodes(ExpressionArray);
2211     m_aNodeStack.Push(pSNode);
2212 }
2213 
2214 
2215 void SmParser::Stack()
2216 {
2217     SmNodeArray  ExpressionArray;
2218     NextToken();
2219     if (m_aCurToken.eType == TLGROUP)
2220     {
2221         sal_uInt16 n = 0;
2222 
2223         do
2224         {
2225             NextToken();
2226             Align();
2227             n++;
2228         }
2229         while (m_aCurToken.eType == TPOUND);
2230 
2231         ExpressionArray.resize(n);
2232 
2233         for (sal_uInt16 i = 0; i < n; i++)
2234             ExpressionArray[n - (i + 1)] = m_aNodeStack.Pop();
2235 
2236         if (m_aCurToken.eType != TRGROUP)
2237             Error(PE_RGROUP_EXPECTED);
2238 
2239         NextToken();
2240 
2241         SmStructureNode *pSNode = new SmTableNode(m_aCurToken);
2242         pSNode->SetSubNodes(ExpressionArray);
2243         m_aNodeStack.Push(pSNode);
2244     }
2245     else
2246         Error(PE_LGROUP_EXPECTED);
2247 }
2248 
2249 
2250 void SmParser::Matrix()
2251 {
2252     SmNodeArray  ExpressionArray;
2253 
2254     NextToken();
2255     if (m_aCurToken.eType == TLGROUP)
2256     {
2257         sal_uInt16 c = 0;
2258 
2259         do
2260         {
2261             NextToken();
2262             Align();
2263             c++;
2264         }
2265         while (m_aCurToken.eType == TPOUND);
2266 
2267         sal_uInt16 r = 1;
2268 
2269         while (m_aCurToken.eType == TDPOUND)
2270         {
2271             NextToken();
2272             for (sal_uInt16 i = 0; i < c; i++)
2273             {
2274                 Align();
2275                 if (i < (c - 1))
2276                 {
2277                     if (m_aCurToken.eType == TPOUND)
2278                     {
2279                         NextToken();
2280                     }
2281                     else
2282                         Error(PE_POUND_EXPECTED);
2283                 }
2284             }
2285 
2286             r++;
2287         }
2288 
2289         long nRC = r * c;
2290 
2291         ExpressionArray.resize(nRC);
2292 
2293         for (sal_uInt16 i = 0; i < (nRC); i++)
2294             ExpressionArray[(nRC) - (i + 1)] = m_aNodeStack.Pop();
2295 
2296         if (m_aCurToken.eType != TRGROUP)
2297             Error(PE_RGROUP_EXPECTED);
2298 
2299         NextToken();
2300 
2301         SmMatrixNode *pMNode = new SmMatrixNode(m_aCurToken);
2302         pMNode->SetSubNodes(ExpressionArray);
2303         pMNode->SetRowCol(r, c);
2304         m_aNodeStack.Push(pMNode);
2305     }
2306     else
2307         Error(PE_LGROUP_EXPECTED);
2308 }
2309 
2310 
2311 void SmParser::Special()
2312 {
2313     sal_Bool bReplace = sal_False;
2314     String &rName = m_aCurToken.aText;
2315     String aNewName;
2316 
2317     if (CONVERT_NONE == GetConversion())
2318     {
2319         // conversion of symbol names for 6.0 (XML) file format
2320         // (name change on import / export.
2321         // UI uses localized names XML file format does not.)
2322         if( rName.Len() && rName.GetChar( 0 ) == sal_Unicode( '%' ) )
2323         {
2324             if (IsImportSymbolNames())
2325             {
2326                 const SmLocalizedSymbolData &rLSD = SM_MOD()->GetLocSymbolData();
2327                 aNewName = rLSD.GetUiSymbolName( rName.Copy( 1 ) );
2328                 bReplace = sal_True;
2329             }
2330             else if (IsExportSymbolNames())
2331             {
2332                 const SmLocalizedSymbolData &rLSD = SM_MOD()->GetLocSymbolData();
2333                 aNewName = rLSD.GetExportSymbolName( rName.Copy( 1 ) );
2334                 bReplace = sal_True;
2335             }
2336         }
2337         if( aNewName.Len() )
2338             aNewName.Insert( '%', 0 );
2339     }
2340     else    // 5.0 <-> 6.0 formula text (symbol name) conversion
2341     {
2342         LanguageType nLanguage = GetLanguage();
2343         SmLocalizedSymbolData &rData = SM_MOD()->GetLocSymbolData();
2344         const ResStringArray *pFrom = 0;
2345         const ResStringArray *pTo   = 0;
2346         if (CONVERT_50_TO_60 == GetConversion())
2347         {
2348             pFrom = rData.Get50NamesArray( nLanguage );
2349             pTo   = rData.Get60NamesArray( nLanguage );
2350         }
2351         else if (CONVERT_60_TO_50 == GetConversion())
2352         {
2353             pFrom = rData.Get60NamesArray( nLanguage );
2354             pTo   = rData.Get50NamesArray( nLanguage );
2355         }
2356         if (pFrom  &&  pTo)
2357         {
2358             DBG_ASSERT( pFrom->Count() == pTo->Count(),
2359                     "array length mismatch" );
2360             sal_uInt16 nCount = sal::static_int_cast< sal_uInt16 >(pFrom->Count());
2361             for (sal_uInt16 i = 0;  i < nCount;  ++i)
2362             {
2363                 if (pFrom->GetString(i) == rName)
2364                 {
2365                     aNewName = pTo->GetString(i);
2366                     bReplace = sal_True;
2367                 }
2368             }
2369         }
2370         // else:
2371         // conversion arrays not found or (usually)
2372         // conversion not necessary
2373     }
2374 
2375     if (bReplace  &&  aNewName.Len()  &&  rName != aNewName)
2376     {
2377         Replace( GetTokenIndex(), rName.Len(), aNewName );
2378         rName = aNewName;
2379     }
2380 
2381     // add symbol name to list of used symbols
2382     const String aSymbolName( m_aCurToken.aText.Copy( 1 ) );
2383     if (aSymbolName.Len() > 0 )
2384         AddToUsedSymbols( aSymbolName );
2385 
2386     m_aNodeStack.Push(new SmSpecialNode(m_aCurToken));
2387     NextToken();
2388 }
2389 
2390 
2391 void SmParser::GlyphSpecial()
2392 {
2393     m_aNodeStack.Push(new SmGlyphSpecialNode(m_aCurToken));
2394     NextToken();
2395 }
2396 
2397 
2398 void SmParser::Error(SmParseError eError)
2399 {
2400     SmStructureNode *pSNode = new SmExpressionNode(m_aCurToken);
2401     SmErrorNode     *pErr   = new SmErrorNode(eError, m_aCurToken);
2402     pSNode->SetSubNodes(pErr, 0);
2403 
2404     //! put a structure node on the stack (instead of the error node itself)
2405     //! because sometimes such a node is expected in order to attach some
2406     //! subnodes
2407     m_aNodeStack.Push(pSNode);
2408 
2409     AddError(eError, pSNode);
2410 
2411     NextToken();
2412 }
2413 
2414 
2415 // end gramar
2416 
2417 
2418 SmParser::SmParser()
2419 {
2420     m_eConversion = CONVERT_NONE;
2421     m_bImportSymNames = m_bExportSymNames = sal_False;
2422     m_nLang = Application::GetSettings().GetUILanguage();
2423 }
2424 
2425 
2426 SmNode *SmParser::Parse(const String &rBuffer)
2427 {
2428     ClearUsedSymbols();
2429 
2430     m_aBufferString = rBuffer;
2431     m_aBufferString.ConvertLineEnd( LINEEND_LF );
2432     m_nBufferIndex =
2433     m_nTokenIndex  = 0;
2434     m_Row          = 1;
2435     m_nColOff      = 0;
2436     m_nCurError       = -1;
2437 
2438     for (sal_uInt16 i = 0;  i < m_aErrDescList.Count();  i++)
2439         delete m_aErrDescList.Remove(i);
2440 
2441     m_aErrDescList.Clear();
2442 
2443     m_aNodeStack.Clear();
2444 
2445     SetLanguage( Application::GetSettings().GetUILanguage() );
2446     NextToken();
2447     Table();
2448 
2449     return m_aNodeStack.Pop();
2450 }
2451 
2452 
2453 sal_uInt16 SmParser::AddError(SmParseError Type, SmNode *pNode)
2454 {
2455     SmErrorDesc *pErrDesc = new SmErrorDesc;
2456 
2457     pErrDesc->Type  = Type;
2458     pErrDesc->pNode = pNode;
2459     pErrDesc->Text  = String(SmResId(RID_ERR_IDENT));
2460 
2461     sal_uInt16  nRID;
2462     switch (Type)
2463     {
2464         case PE_UNEXPECTED_CHAR:     nRID = RID_ERR_UNEXPECTEDCHARACTER;    break;
2465         case PE_LGROUP_EXPECTED:     nRID = RID_ERR_LGROUPEXPECTED;         break;
2466         case PE_RGROUP_EXPECTED:     nRID = RID_ERR_RGROUPEXPECTED;         break;
2467         case PE_LBRACE_EXPECTED:     nRID = RID_ERR_LBRACEEXPECTED;         break;
2468         case PE_RBRACE_EXPECTED:     nRID = RID_ERR_RBRACEEXPECTED;         break;
2469         case PE_FUNC_EXPECTED:       nRID = RID_ERR_FUNCEXPECTED;           break;
2470         case PE_UNOPER_EXPECTED:     nRID = RID_ERR_UNOPEREXPECTED;         break;
2471         case PE_BINOPER_EXPECTED:    nRID = RID_ERR_BINOPEREXPECTED;        break;
2472         case PE_SYMBOL_EXPECTED:     nRID = RID_ERR_SYMBOLEXPECTED;         break;
2473         case PE_IDENTIFIER_EXPECTED: nRID = RID_ERR_IDENTEXPECTED;          break;
2474         case PE_POUND_EXPECTED:      nRID = RID_ERR_POUNDEXPECTED;          break;
2475         case PE_COLOR_EXPECTED:      nRID = RID_ERR_COLOREXPECTED;          break;
2476         case PE_RIGHT_EXPECTED:      nRID = RID_ERR_RIGHTEXPECTED;          break;
2477 
2478         default:
2479             nRID = RID_ERR_UNKOWN;
2480     }
2481     pErrDesc->Text += SmResId(nRID);
2482 
2483     m_aErrDescList.Insert(pErrDesc);
2484 
2485     return (sal_uInt16) m_aErrDescList.GetPos(pErrDesc);
2486 }
2487 
2488 
2489 const SmErrorDesc  *SmParser::NextError()
2490 {
2491     if (m_aErrDescList.Count())
2492         if (m_nCurError > 0) return m_aErrDescList.Seek(--m_nCurError);
2493         else
2494         {
2495             m_nCurError = 0;
2496             return m_aErrDescList.Seek(m_nCurError);
2497         }
2498     else return 0;
2499 }
2500 
2501 
2502 const SmErrorDesc  *SmParser::PrevError()
2503 {
2504     if (m_aErrDescList.Count())
2505         if (m_nCurError < (int) (m_aErrDescList.Count() - 1)) return m_aErrDescList.Seek(++m_nCurError);
2506         else
2507         {
2508             m_nCurError = (int) (m_aErrDescList.Count() - 1);
2509             return m_aErrDescList.Seek(m_nCurError);
2510         }
2511     else return 0;
2512 }
2513 
2514 
2515 const SmErrorDesc  *SmParser::GetError(sal_uInt16 i)
2516 {
2517     return (/*i >= 0  &&*/  i < m_aErrDescList.Count())
2518                ? m_aErrDescList.Seek(i)
2519                : m_aErrDescList.Seek(m_nCurError);
2520 }
2521 
2522 
2523