]> git.lyx.org Git - lyx.git/blobdiff - src/mathed/math_parser.C
make {} a proper inset; simplifications to the parser;
[lyx.git] / src / mathed / math_parser.C
index 3b10d551f21e926fa06cd07f1d8b526bd94f0b79..d0d480743b0befe95c551f9f6f58b6fbf92b3650 100644 (file)
@@ -7,7 +7,7 @@
  *
  *  Dependencies: Xlib, XForms
  *
- *  Copyright: (c) 1996, Alejandro Aguilar Sierra
+ *  Copyright: 1996, Alejandro Aguilar Sierra
  *
  *   Version: 0.8beta.
  *
  */
 
 #include <config.h>
-#include <cstdlib>
+
 #include <cctype>
 
 #ifdef __GNUG__
-#pragma implementation "math_parser.h"
+#pragma implementation
 #endif
 
 #include "math_parser.h"
-#include "math_iter.h"
+#include "array.h"
 #include "math_inset.h"
+#include "math_arrayinset.h"
+#include "math_bigopinset.h"
+#include "math_charinset.h"
+#include "math_dotsinset.h"
+#include "math_decorationinset.h"
+#include "math_deliminset.h"
+#include "math_fracinset.h"
+#include "math_funcinset.h"
+#include "math_funcliminset.h"
 #include "math_macro.h"
-#include "math_root.h"
+#include "math_macrotable.h"
+#include "math_macrotemplate.h"
+#include "math_matrixinset.h"
+#include "math_noglyphinset.h"
+#include "math_rootinset.h"
+#include "math_scopeinset.h"
+#include "math_sqrtinset.h"
+#include "math_scriptinset.h"
+#include "math_sizeinset.h"
+#include "math_spaceinset.h"
+#include "math_sqrtinset.h"
+#include "math_stackrelinset.h"
+#include "math_symbolinset.h"
 #include "debug.h"
+#include "mathed/support.h"
+#include "lyxlex.h"
+#include "support/lstrings.h"
 
-enum {
-       FLAG_BRACE      = 1,    //  A { needed
-       FLAG_BRACE_ARG  = 2,    //  Next { is argument
-       FLAG_BRACE_OPT  = 4,    //  Optional {
-       FLAG_BRACE_LAST = 8,    //  Last } ends the parsing process
-       FLAG_BRACK_ARG  = 16,   //  Optional [
-       FLAG_RIGHT      = 32,      //  Next right ends the parsing process
-       FLAG_END        = 64,      //  Next end ends the parsing process
-       FLAG_BRACE_FONT = 128,  //  Next } closes a font
-       FLAG_BRACK_END  = 256   // Next ] ends the parsing process
-};
+using std::istream;
+using std::endl;
 
-YYSTYPE yylval;
 
+namespace {
 
-static short mathed_env = LM_EN_INTEXT;
+MathScriptInset * prevScriptInset(MathArray const & array)
+{
+       MathInset * p = array.back();
+       return (p && p->isScriptInset()) ? static_cast<MathScriptInset *>(p) : 0;
+}
 
-char * mathed_label = 0;
 
-char const * latex_mathenv[] = { 
-   "math", 
-   "displaymath", 
-   "equation", 
-   "eqnarray*",
-   "eqnarray",
-   "array"
-};
+MathInset * lastScriptInset(MathArray & array, bool up, bool down, int limits)
+{
+       MathScriptInset * p = prevScriptInset(array);
+       if (!p) {
+               MathInset * b = array.back();
+               if (b && b->isScriptable()) {
+                       p = new MathScriptInset(up, down, b->clone());
+                       array.pop_back();       
+               } else {
+                       p = new MathScriptInset(up, down);
+               }
+               array.push_back(p);
+       }
+       if (up)
+               p->up(true);
+       if (down)
+               p->down(down);
+       if (limits)
+               p->limits(limits);
+       return p;
+}
 
 
-char const * latex_mathspace[] = {
-   "!", ",", ":", ";", "quad", "qquad"
-};
-   
-char const * latex_special_chars = "#$%&_{}";
-           
 // These are lexical codes, not semantic
 enum lexcode_enum {
-   LexNone,
-   LexESC,
-   LexAlpha,
-   LexDigit,
-   LexBOP,         // Binary operators or relations
-   LexMathSpace,
-   LexOpen,
-   LexClose,
-   LexComment,
-   LexArgument,
-   LexSpace,
-   LexNewLine,
-   LexOther,
-   LexSelf
+       LexNone,
+       LexESC,
+       LexAlpha,
+       LexBOP,         // Binary operators or relations
+       LexOpen,
+       LexClose,
+       LexComment,
+       LexArgument,
+       LexSpace,
+       LexNewLine,
+       LexOther,
+       LexMath,
+       LexSelf
+};
+
+lexcode_enum lexcode[256];  
+
+
+const unsigned char LM_TK_OPEN  = '{';
+const unsigned char LM_TK_CLOSE = '}';
+
+enum {
+       FLAG_BRACE      = 1 << 0,  //  A { needed              //}
+       FLAG_BRACE_LAST = 1 << 1,  //  // { Last } ends the parsing process
+       FLAG_RIGHT      = 1 << 2,  //  Next right ends the parsing process
+       FLAG_END        = 1 << 3,  //  Next end ends the parsing process
+       FLAG_BRACK_END  = 1 << 5,  //  // [ Next ] ends the parsing process
+       FLAG_AMPERSAND  = 1 << 6,  //  Next & ends the parsing process
+       FLAG_NEWLINE    = 1 << 7,  //  Next \\ ends the parsing process
+       FLAG_ITEM       = 1 << 8,  //  read a (possibly braced token)
+       FLAG_LEAVE      = 1 << 9,  //  marker for leaving the 
+       FLAG_OPTARG     = 1 << 10  //  reads an argument in []
+};
+
+
+struct latex_mathenv_type {
+       char const *      name;
+       char const *      basename;
+       MathInsetTypes    typ;
+       bool              numbered;
+       bool              ams;
+};
+
+latex_mathenv_type latex_mathenv[] = { 
+       {"math",         "math",         LM_OT_SIMPLE,   0, 0},
+       {"equation*",    "equation",     LM_OT_EQUATION, 0, 0},
+       {"equation",     "equation",     LM_OT_EQUATION, 1, 0},
+       {"eqnarray*",    "eqnarray",     LM_OT_EQNARRAY, 0, 0},
+       {"eqnarray",     "eqnarray",     LM_OT_EQNARRAY, 1, 0},
+       {"align*",       "align",        LM_OT_ALIGN,    0, 1},
+       {"align",        "align",        LM_OT_ALIGN,    1, 1},
+       {"alignat*",     "alignat",      LM_OT_ALIGNAT,  0, 1},
+       {"alignat",      "alignat",      LM_OT_ALIGNAT,  1, 1},
+       {"multline*",    "multline",     LM_OT_MULTLINE, 0, 1},
+       {"multline",     "multline",     LM_OT_MULTLINE, 1, 1},
+       {"array",        "array",        LM_OT_MATRIX,   0, 1}
+};
+
+int const latex_mathenv_num = sizeof(latex_mathenv)/sizeof(latex_mathenv[0]);
+
+
+
+void lexInit()
+{
+       for (int i = 0; i <= 255; ++i) {
+               if (isdigit(i))
+                       lexcode[i] = LexOther;
+               else if (isspace(i))
+                       lexcode[i] = LexSpace;
+               else
+                       lexcode[i] = LexAlpha;
+       }
+       
+       lexcode['\t'] = lexcode['\f'] = lexcode[' '] = LexSpace;
+       lexcode['\n'] = LexNewLine;
+       lexcode['%'] = LexComment;
+       lexcode['#'] = LexArgument;
+       lexcode['$'] = LexMath;
+       lexcode['+'] = lexcode['-'] = lexcode['*'] = lexcode['/']
+               = lexcode['<'] = lexcode['>'] = lexcode['='] = LexBOP;
+       
+       lexcode['('] = lexcode[')'] = lexcode['|'] = lexcode['.'] =
+               lexcode['?'] = LexOther; 
+       
+       lexcode['\''] = lexcode['@'] = LexAlpha;
+       
+       lexcode['['] = lexcode[']'] = lexcode['^'] = lexcode['_'] = 
+               lexcode['&'] = LexSelf;  
+       
+       lexcode['\\'] = LexESC;
+       lexcode['{'] = LexOpen;
+       lexcode['}'] = LexClose;
+}
+
+
+
+//
+// Helper class for parsing
+//
+
+
+class Parser {
+public:
+       ///
+       Parser(LyXLex & lex) : is_(lex.getStream()), lineno_(lex.getLineNo()) {}
+       ///
+       Parser(istream & is) : is_(is), lineno_(0) {}
+
+       ///
+       MathMacroTemplate * parse_macro();
+       ///
+       MathMatrixInset * parse_normal();
+       ///
+       void parse_into(MathArray & array, unsigned flags);
+       ///
+       int lineno() const { return lineno_; }
+
+private:
+       ///
+       int yylex();
+       ///
+       string lexArg(unsigned char lf, bool accept_spaces = false);
+       ///
+       unsigned char getuchar();
+       ///
+       void error(string const & msg);
+       ///
+       void parse_lines(MathGridInset * p, int col, bool numbered, bool outmost);
+       ///
+       latexkeys const * read_delim();
+
+private:
+       ///
+       istream & is_;
+       ///
+       int lineno_;
+
+       ///
+       int ival_;
+       ///
+       latexkeys const * lval_;
+       ///
+       string sval_;
+
+       ///
+       bool   curr_num_;
+       ///
+       string curr_label_;
+       ///
+       string curr_skip_;
 };
 
-static lexcode_enum lexcode[256];  
-static char yytext[256];
-static int yylineno;
-static FILE * yyin;
-static bool yy_mtextmode= false;
-           
-inline
-char * strnew(char const * s)
+
+unsigned char Parser::getuchar()
 {
-       char *s1 = new char[strlen(s)+1]; // this leaks when not delete[]'ed
-       strcpy(s1, s);
-       return s1;
+       char c = 0;
+       if (!is_.good())
+               lyxerr << "The input stream is not well..." << endl;
+       is_.get(c);
+       return static_cast<unsigned char>(c);
 }
 
 
-static void mathPrintError(char const * msg) 
+string Parser::lexArg(unsigned char lf, bool accept_spaces = false)
 {
-       lyxerr << "Line ~" << yylineno << ": Math parse error: "
-              << msg << endl;
+       string result;
+       unsigned char c = 0;
+       while (is_.good()) {
+               c = getuchar();
+               if (!isspace(c))
+                       break;
+       }
+
+       if (c != lf) {
+               is_.putback(c);
+               return result;
+       }
+               
+       unsigned char rg = 0;
+       if (lf == '{') rg = '}';
+       if (lf == '[') rg = ']';
+       if (lf == '(') rg = ')';
+       if (!rg) {
+               lyxerr[Debug::MATHED] << "Math parse error: unknown bracket '"
+                       << lf << "'" << endl;
+               return result;
+       }
+
+       int depth = 1;
+       do {
+               unsigned char c = getuchar();
+               if (c == lf)
+                       ++depth;
+               if (c == rg)
+                       --depth;
+               if ((!isspace(c) || (c == ' ' && accept_spaces)) && depth > 0)
+                       result += c;
+       } while (depth > 0 && is_.good());
+
+       return result;
 }
 
 
-static void LexInitCodes()
+int Parser::yylex()
 {
-   for (int i = 0;  i <= 255; ++i)     {
-     if (isalpha(i)) lexcode[i] = LexAlpha;
-     else if (isdigit(i)) lexcode[i] = LexDigit;
-     else if (isspace(i)) lexcode[i] = LexSpace;
-     else lexcode[i] = LexNone;
-   }
-    
-   lexcode['\t'] = lexcode['\f'] = lexcode[' '] = LexSpace;
-   lexcode['\n'] = LexNewLine;
-   lexcode['%'] = LexComment;
-   lexcode['#'] = LexArgument;
-   lexcode['+'] = lexcode['-'] = lexcode['*'] = lexcode['/'] = 
-   lexcode['<'] = lexcode['>'] = lexcode['='] = LexBOP;
-   
-   lexcode['!'] = lexcode[','] = lexcode[':'] = lexcode[';'] = LexMathSpace;
-   lexcode['('] = lexcode[')'] = lexcode['|'] = lexcode['.'] = lexcode['?'] = LexOther; 
-   lexcode['\'']= LexAlpha;
-   
-   lexcode['['] = lexcode[']'] = lexcode['^'] = lexcode['_'] = 
-   lexcode['&'] = LexSelf;  
-   
-   lexcode['\\'] = LexESC;
-   lexcode['{'] = LexOpen;
-   lexcode['}'] = LexClose;
+       static bool init_done = false;
+       
+       if (!init_done) {
+               lexInit();
+               init_done = true;
+       }
+       
+       while (is_.good()) {
+               unsigned char c = getuchar();
+               //lyxerr << "reading byte: '" << c << "' code: " << lexcode[c] << endl;
+               
+               if (lexcode[c] == LexNewLine) {
+                       ++lineno_; 
+                       continue;
+               } else if (lexcode[c] == LexComment) {
+                       do {
+                               c = getuchar();
+                       } while (c != '\n' && is_.good());  // eat comments
+               } else if (lexcode[c] == LexOther) {
+                       ival_ = c;
+                       return LM_TK_STR;
+               } else if (lexcode[c] == LexAlpha || lexcode[c] == LexSpace) {
+                       ival_ = c;
+                       return LM_TK_ALPHA;
+               } else if (lexcode[c] == LexBOP) {
+                       ival_ = c;
+                       return LM_TK_BOP;
+               } else if (lexcode[c] == LexMath) {
+                       ival_ = 0;
+                       return LM_TK_MATH;
+               } else if (lexcode[c] == LexSelf) {
+                       return c;
+               } else if (lexcode[c] == LexArgument) {
+                       c = getuchar();
+                       ival_ = c - '0';
+                       return LM_TK_ARGUMENT; 
+               } else if (lexcode[c] == LexOpen) {
+                       return LM_TK_OPEN;
+               } else if (lexcode[c] == LexClose) {
+                       return LM_TK_CLOSE;
+               } else if (lexcode[c] == LexESC)   {
+                       c = getuchar();
+                       //lyxerr << "reading second byte: '" << c << "' code: " << lexcode[c] << endl;
+                       string s;
+                       s += c;
+                       latexkeys const * l = in_word_set(s);
+                       if (l) {
+                               //lyxerr << "found key: " << l << endl;
+                               //lyxerr << "found key name: " << l->name << endl;
+                               //lyxerr << "found key token: " << l->token << endl;
+                               lval_ = l;
+                               ival_ = l->id;
+                               return l->token;
+                       }
+                       if (lexcode[c] == LexAlpha) {
+                               sval_.erase();
+                               while (lexcode[c] == LexAlpha && is_.good()) {
+                                       sval_ += c;
+                                       c = getuchar();
+                               }
+                               while (lexcode[c] == LexSpace && is_.good()) 
+                                       c = getuchar();
+                               if (lexcode[c] != LexSpace)
+                                       is_.putback(c);
+                       
+                               //lyxerr[Debug::MATHED] << "reading: text '" << sval_ << "'\n";
+                               //lyxerr << "reading: text '" << sval_ << "'\n";
+                               latexkeys const * l = in_word_set(sval_);
+                               if (!l) 
+                                       return LM_TK_UNDEF;
+
+                               if (l->token == LM_TK_BEGIN || l->token == LM_TK_END) { 
+                                       string name = lexArg('{');
+                                       int i = 0;
+                                       while (i < latex_mathenv_num && name != latex_mathenv[i].name)
+                                                ++i;
+                                       ival_ = i;
+                               } else if (l->token == LM_TK_SPACE) 
+                                       ival_ = l->id;
+                               else
+                                       lval_ = l;
+                               return l->token;
+                       }
+               }
+       }
+       return 0;
 }
 
 
-static char LexGetArg(char lf, bool accept_spaces= false)
+void Parser::error(string const & msg) 
 {
-   char c, rg, * p = &yytext[0];
-   int bcnt = 1;
-   
-   while (!feof(yyin)) {
-      c = getc(yyin); 
-      if (c>' ') {
-        if (!lf) lf = c; else
-        if (c!= lf)
-                lyxerr << "Math parse error: unexpected '"
-                       << c << "'" << endl;
-        break;
-      }
-   }
-   rg = (lf == '{') ? '}': ((lf == '[') ? ']': ((lf == '(') ? ')': 0));
-   if (!rg) {
-          lyxerr << "Math parse error: unknown bracket '"
-                 << lf << "'" << endl;
-      return '\0';
-   } 
-   do {
-      c = getc(yyin); 
-      if (c == lf) bcnt++;
-      if (c == rg) bcnt--;
-      if ((c>' ' || (c == ' ' && accept_spaces)) && bcnt>0) *(p++) = c;
-   } while (bcnt>0 && !feof(yyin));
-   *p = '\0';
-   return rg;
+       lyxerr << "Line ~" << lineno_ << ": Math parse error: " << msg << endl;
 }
 
 
-static int yylex(void)
+void Parser::parse_lines(MathGridInset * p, int col, bool numbered, bool outmost)
 {
-   static int init_done = 0;
-   unsigned char c;
-   
-   if (!init_done) LexInitCodes();
-   
-   while (!feof(yyin)) { 
-      c = getc(yyin);
-       
-      if (yy_mtextmode && c == ' ') {
-         yylval.i= ' ';
-         return LM_TK_ALPHA;
-      }
-       
-       if (lexcode[c] == LexNewLine) {
-          yylineno++; 
-          continue;
-       }
-        
-      if (lexcode[c] == LexComment) 
-       do c = getc(yyin); while (c!= '\n' % !feof(yyin));  // eat comments
-    
-      if (lexcode[c] == LexDigit || lexcode[c] == LexOther || lexcode[c] == LexMathSpace) 
-        { yylval.i= c; return LM_TK_STR; }
-      if (lexcode[c] == LexAlpha) { yylval.i= c; return LM_TK_ALPHA; }
-      if (lexcode[c] == LexBOP)   { yylval.i= c; return LM_TK_BOP; }
-      if (lexcode[c] == LexSelf)  { return c; }   
-      if (lexcode[c] == LexArgument)   { 
-         c = getc(yyin);
-         yylval.i = c - '0';
-         return LM_TK_ARGUMENT; 
-      }
-      if (lexcode[c] == LexOpen)   { return LM_TK_OPEN; }
-      if (lexcode[c] == LexClose)   { return LM_TK_CLOSE; }
-      
-      if (lexcode[c] == LexESC)   {
-        c = getc(yyin);
-        if (c == '\\') { return LM_TK_NEWLINE; }
-        if (c == '(')  { yylval.i = LM_EN_INTEXT; return LM_TK_BEGIN; }
-        if (c == ')')  { yylval.i = LM_EN_INTEXT; return LM_TK_END; }
-        if (c == '[')  { yylval.i = LM_EN_DISPLAY; return LM_TK_BEGIN; }
-        if (c == ']')  { yylval.i = LM_EN_DISPLAY; return LM_TK_END; }
-        if (strchr(latex_special_chars, c)) {
-            yylval.i = c;
-            return LM_TK_SPECIAL;
-        }  
-        if (lexcode[c] == LexMathSpace) {
-           int i;
-           for (i= 0; i<4 && c!= latex_mathspace[i][0]; i++);
-           yylval.i = (i<4) ? i: 0; 
-           return LM_TK_SPACE; 
-        }
-        if (lexcode[c] == LexAlpha || lexcode[c] == LexDigit) {
-           char* p = &yytext[0];
-           while (lexcode[c] == LexAlpha || lexcode[c] == LexDigit) {
-              *p = c;
-              c = getc(yyin);
-              p++;
-           }
-           *p = '\0';
-           if (!feof(yyin)) ungetc(c, yyin);
-           latexkeys *l = in_word_set (yytext, strlen(yytext));
-           if (l) {
-              if (l->token == LM_TK_BEGIN || l->token == LM_TK_END) { 
-                 int i;
-                 LexGetArg('{');
-//               for (i= 0; i<5 && strncmp(yytext, latex_mathenv[i],
-//                             strlen(latex_mathenv[i])); i++);
-                 
-                 for (i= 0; i<6 && strcmp(yytext, latex_mathenv[i]); i++);
-                 yylval.i = i;
-              } else
-              if (l->token == LM_TK_SPACE) 
-                yylval.i = l->id;
-              else
-                yylval.l = l;
-              return l->token;
-           } else { 
-              yylval.s = yytext;
-              return LM_TK_UNDEF;
-           }
-        }
-      }
-   }
-   return 0;
+       // save global variables
+       bool   const saved_num   = curr_num_;
+       string const saved_label = curr_label_;
+
+       for (int row = 0; true; ++row) {
+               // reset global variables
+               curr_num_   = numbered;
+               curr_label_.erase();
+
+               // reading a row
+               int idx = p->nargs() - p->ncols();
+               for (int i = 0; i < col - 1; ++i, ++idx)
+                       parse_into(p->cell(idx), FLAG_AMPERSAND);
+               parse_into(p->cell(idx), FLAG_NEWLINE | FLAG_END);
+
+               if (outmost) {
+                       MathMatrixInset * m = static_cast<MathMatrixInset *>(p);
+                       m->numbered(row, curr_num_);
+                       m->label(row, curr_label_);
+                       if (curr_skip_.size()) {
+                               m->vskip(LyXLength(curr_skip_), row);
+                               curr_skip_.erase();
+                       }
+               }
+
+#ifdef WITH_WARNINGS
+#warning Hack!
+#endif
+               // no newline
+               if (ival_ != -1)
+                       break;
+
+               p->appendRow();
+       }
+
+       // restore "global" variables
+       curr_num_   = saved_num;
+       curr_label_ = saved_label;
 }
 
 
-int parse_align(char * hor, char *)
+MathMacroTemplate * Parser::parse_macro()
 {
-   int nc = 0;
-   for (char * c = hor; c && *c > ' '; ++c) nc++;
-   return nc;
+       if (yylex() != LM_TK_NEWCOMMAND) {
+               lyxerr << "\\newcommand expected\n";
+               return 0;
+       }
+
+       string name = lexArg('{').substr(1);
+       string arg  = lexArg('[');
+       int    narg = arg.empty() ? 0 : atoi(arg.c_str()); 
+       MathMacroTemplate * p = new MathMacroTemplate(name, narg);
+       parse_into(p->cell(0), FLAG_BRACE | FLAG_BRACE_LAST);
+       return p;
 }
 
 
-// Accent hacks only for 0.12. Stolen from Cursor.
-int accent = 0;
-int nestaccent[8];
+MathMatrixInset * Parser::parse_normal()
+{
+       MathMatrixInset * p = 0;
+       int t = yylex();
+
+       switch (t) {
+               case LM_TK_MATH:
+               case LM_TK_BEGIN: {
+                       int i = ival_;
+                       lyxerr[Debug::MATHED]
+                               << "reading math environment " << i << " "
+                               << latex_mathenv[i].name << "\n";
+
+                       MathInsetTypes typ = latex_mathenv[i].typ;
+                       p = new MathMatrixInset(typ);
+
+                       switch (typ) {
+
+                               case LM_OT_SIMPLE: {
+                                       curr_num_ = latex_mathenv[i].numbered;
+                                       curr_label_.erase();
+                                       parse_into(p->cell(0), 0);
+                                       p->numbered(0, curr_num_);
+                                       p->label(0, curr_label_);
+                                       break;
+                               }
+
+                               case LM_OT_EQUATION: {
+                                       curr_num_ = latex_mathenv[i].numbered;
+                                       curr_label_.erase();
+                                       parse_into(p->cell(0), FLAG_END);
+                                       p->numbered(0, curr_num_);
+                                       p->label(0, curr_label_);
+                                       break;
+                               }
+
+                               case LM_OT_EQNARRAY: {
+                                       parse_lines(p, 3, latex_mathenv[i].numbered, true);
+                                       break;
+                               }
+
+                               case LM_OT_ALIGN: {
+                                       p->halign(lexArg('{'));
+                                       parse_lines(p, 2, latex_mathenv[i].numbered, true);
+                                       break;
+                               }
+
+                               case LM_OT_ALIGNAT: {
+                                       p->halign(lexArg('{'));
+                                       parse_lines(p, 2, latex_mathenv[i].numbered, true);
+                                       break;
+                               }
+
+                               default: 
+                                       lyxerr[Debug::MATHED]
+                                               << "1: unknown math environment: " << typ << "\n";
+                       }
+
+                       break;
+               }
+               
+               default:
+                       lyxerr[Debug::MATHED]
+                               << "2 unknown math environment: " << t << "\n";
+       }
+
+       return p;
+}
+
 
-void setAccent(int ac)
+latexkeys const * Parser::read_delim()
 {
-       if (ac > 0 && accent < 8) {
-               nestaccent[accent++] = ac;
-       } else
-         accent = 0;  // consumed!
+       int ld = yylex();
+       //lyxerr << "found symbol: " << ld << "\n";
+       latexkeys const * l = in_word_set(".");
+       switch (ld) {
+               case LM_TK_SYM:
+               case LM_TK_NOGLYPH:
+               case LM_TK_SPECIAL:
+               case LM_TK_BEGIN: {
+                       l = lval_;
+                       //lyxerr << "found key 1: '" << l << "'\n";
+                       //lyxerr << "found key 1: '" << l->name << "'\n";
+                       break;
+               }
+               case ']':
+               case '[': {
+                       string s;
+                       s += ld;
+                       l = in_word_set(s);
+                       //lyxerr << "found key 2: '" << l->name << "'\n";
+                       break;
+               }
+               case LM_TK_STR: {
+                       string s;
+                       s += ival_;
+                       l = in_word_set(s);
+                       //lyxerr << "found key 2: '" << l->name << "'\n";
+               }
+       }
+       return l;
 }
 
 
-MathedInset * doAccent(byte c, MathedTextCodes t)
+void Parser::parse_into(MathArray & array, unsigned flags)
 {
-       MathedInset * ac = 0;
+       MathTextCodes yyvarcode   = LM_TC_VAR;
+
+       int  t      = yylex();
+       bool panic  = false;
+       int  brace  = 0;
+       int  limits = 0;
+
+       while (t) {
+               //lyxerr << "t: " << t << " flags: " << flags << " i: " << ival_
+               //      << " '" << sval_ << "'\n";
+               //array.dump(lyxerr);
+               //lyxerr << "\n";
+
+               if (flags & FLAG_ITEM) {
+                       flags &= ~FLAG_ITEM;
+                       if (t == LM_TK_OPEN) { 
+                               // skip the brace and regard everything to the next matching
+                               // closing brace
+                               t = yylex();
+                               ++brace;
+                               flags |= FLAG_BRACE_LAST;
+                       } else {
+                               // regard only this single token
+                               flags |= FLAG_LEAVE;
+                       }
+               }
+
+               if ((flags & FLAG_BRACE) && t != LM_TK_OPEN) {
+                       error(
+                               "Expected {. Maybe you forgot to enclose an argument in {}");
+                       panic = true;
+                       break;
+               }
+
+               switch (t) {
+                       
+               case LM_TK_ALPHA:
+                       if (!isspace(ival_) || yyvarcode == LM_TC_TEXTRM)
+                               array.push_back(new MathCharInset(ival_, yyvarcode));
+                       break;
+
+               case LM_TK_ARGUMENT: {
+                       MathMacroArgument * p = new MathMacroArgument(ival_);
+                       //p->code(yyvarcode);
+                       array.push_back(p);
+                       break;
+               }
+
+               case LM_TK_SPECIAL:
+                       array.push_back(new MathCharInset(ival_, LM_TC_SPECIAL));
+                       break;
+
+               case LM_TK_STR:
+                       array.push_back(new MathCharInset(ival_, LM_TC_CONST));
+                       break;
+
+               case LM_TK_OPEN:
+                       array.push_back(new MathScopeInset);
+                       parse_into(array.back()->cell(0), FLAG_BRACE_LAST);
+                       break;
+
+               case LM_TK_CLOSE:
+                       if (flags & FLAG_BRACE_LAST) {
+                               flags |= FLAG_LEAVE;
+                       }
+                       break;
+               
+               case '[':
+                       array.push_back(new MathCharInset('[', LM_TC_CONST));
+                       break;
+
+               case ']':
+                       if (flags & FLAG_BRACK_END)
+                               flags |= FLAG_LEAVE;
+                       else 
+                               array.push_back(new MathCharInset(']', LM_TC_CONST));
+                       break;
+               
+               case '^':
+                       parse_into(
+                               lastScriptInset(array, true, false, limits)->cell(0), FLAG_ITEM);
+                       break;
+               
+               case '_':
+                       parse_into(
+                               lastScriptInset(array, false, true, limits)->cell(1), FLAG_ITEM);
+                       break;
+               
+               case LM_TK_LIMIT:
+                       limits = lval_->id;
+                       //lyxerr << "setting limit to " << limits << "\n";
+                       break;
+               
+               case '&':
+                       if (flags & FLAG_AMPERSAND) {
+                               flags &= ~FLAG_AMPERSAND;
+                               return;
+                       }
+                       lyxerr[Debug::MATHED]
+                               << "found tab unexpectedly, array: '" << array << "'\n";
+                       break;
+               
+               case LM_TK_NEWLINE:
+               {
+                       curr_skip_ = lexArg('[');
+                       if (flags & FLAG_NEWLINE) {
+                               flags &= ~FLAG_NEWLINE;
+                               return;
+                       }
+                       lyxerr[Debug::MATHED]
+                               << "found newline unexpectedly, array: '" << array << "'\n";
+                       break;
+               }
+               
+               case LM_TK_PROTECT: 
+                       break;
+
+               case LM_TK_NOGLYPH: 
+               case LM_TK_NOGLYPHB: 
+                       limits = 0;
+                       array.push_back(new MathNoglyphInset(lval_));
+                       break;
+
+               case LM_TK_BIGSYM:  
+                       limits = 0;
+                       array.push_back(new MathBigopInset(lval_));
+                       break;
+
+               case LM_TK_FUNCLIM:
+                       limits = 0;
+                       array.push_back(new MathFuncLimInset(lval_));
+                       break;
+
+               case LM_TK_SYM:
+                       limits = 0;
+                       array.push_back(new MathSymbolInset(lval_));
+                       break;
+
+               case LM_TK_BOP:
+                       array.push_back(new MathCharInset(ival_, LM_TC_BOP));
+                       break;
+
+               case LM_TK_SPACE:
+                       if (ival_ >= 0) 
+                               array.push_back(new MathSpaceInset(ival_));
+                       break;
+
+               case LM_TK_DOTS:
+                       array.push_back(new MathDotsInset(lval_));
+                       break;
+               
+               case LM_TK_STACK:
+               {
+                       MathStackrelInset * p = new MathStackrelInset;
+                       parse_into(p->cell(0), FLAG_ITEM);
+                       parse_into(p->cell(1), FLAG_ITEM);
+                       array.push_back(p);
+                       break;
+               }
+
+               case LM_TK_FRAC:
+               {
+                       MathFracInset * p = new MathFracInset;
+                       parse_into(p->cell(0), FLAG_ITEM);
+                       parse_into(p->cell(1), FLAG_ITEM);
+                       array.push_back(p);
+                       break;
+               }
+
+               case LM_TK_SQRT:
+               {
+                       unsigned char c = getuchar();
+                       if (c == '[') {
+                               array.push_back(new MathRootInset);
+                               parse_into(array.back()->cell(0), FLAG_BRACK_END);
+                               parse_into(array.back()->cell(1), FLAG_ITEM);
+                       } else {
+                               is_.putback(c);
+                               array.push_back(new MathSqrtInset);
+                               parse_into(array.back()->cell(0), FLAG_ITEM);
+                       }
+                       break;
+               }
+               
+               case LM_TK_LEFT:
+               {
+                       latexkeys const * l = read_delim();
+                       MathArray ar;
+                       parse_into(ar, FLAG_RIGHT);
+                       latexkeys const * r = read_delim();
+                       MathDelimInset * dl = new MathDelimInset(l, r);
+                       dl->cell(0) = ar;
+                       array.push_back(dl);
+                       break;
+               }
+               
+               case LM_TK_RIGHT:
+                       if (flags & FLAG_RIGHT)
+                               return;
+                       error("Unmatched right delimiter");
+//       panic = true;
+                       break;
+               
+               case LM_TK_FONT:
+               {
+                       MathTextCodes t = static_cast<MathTextCodes>(lval_->id);
+                       MathArray ar;
+                       parse_into(ar, FLAG_ITEM);
+                       for (MathArray::iterator it = ar.begin(); it != ar.end(); ++it)
+                               (*it)->handleFont(t);
+                       array.push_back(ar);
+                       break;
+               }
+
+               case LM_TK_OLDFONT:
+                       yyvarcode = static_cast<MathTextCodes>(lval_->id);
+                       break;
+
+               case LM_TK_STY:
+               {
+                       lyxerr[Debug::MATHED] << "LM_TK_STY not implemented\n";
+                       //MathArray tmp = array;
+                       //MathSizeInset * p = new MathSizeInset(MathStyles(lval_->id));
+                       //array.push_back(p);
+                       //parse_into(p->cell(0), FLAG_BRACE_FONT);
+                       break; 
+               }
+
+               case LM_TK_DECORATION:
+               {  
+                       MathDecorationInset * p = new MathDecorationInset(lval_);
+                       parse_into(p->cell(0), FLAG_ITEM);
+                       array.push_back(p);
+                       break;
+               }
+                       
+               case LM_TK_NONUM:
+                       curr_num_ = false;
+                       break;
+               
+               case LM_TK_FUNC:
+                       array.push_back(new MathSymbolInset(lval_));
+                       break;
+               
+               case LM_TK_UNDEF: 
+                       if (MathMacroTable::hasTemplate(sval_)) {
+                               MathMacro * m = MathMacroTable::cloneTemplate(sval_);
+                               for (int i = 0; i < m->nargs(); ++i) 
+                                       parse_into(m->cell(i), FLAG_ITEM);
+                               array.push_back(m);
+                               m->metrics(LM_ST_TEXT);
+                       } else
+                               array.push_back(new MathFuncInset(sval_));
+                       break;
+               
+               case LM_TK_MATH:
+               case LM_TK_END:
+                       return;
+
+               case LM_TK_BEGIN:
+               {
+                       int i = ival_;
+                       MathInsetTypes typ = latex_mathenv[i].typ;
+
+                       if (typ == LM_OT_MATRIX) {
+                               string const valign = lexArg('[') + 'c';
+                               string const halign = lexArg('{');
+                               //lyxerr << "valign: '" << valign << "'\n";
+                               //lyxerr << "halign: '" << halign << "'\n";
+                               MathArrayInset * m = new MathArrayInset(halign.size(), 1);
+                               m->valign(valign[0]);
+                               m->halign(halign);
+
+                               parse_lines(m, halign.size(), latex_mathenv[i].numbered, false);
+                               array.push_back(m);
+                               //lyxerr << "read matrix " << *m << "\n";       
+                               break;
+                       } else 
+                               lyxerr[Debug::MATHED] << "unknow math inset " << typ << "\n";   
+                       break;
+               }
        
-       for (int i= accent-1; i>= 0; i--) {
-               if (i == accent-1)
-                 ac = new MathAccentInset(c, t, nestaccent[i]);
-               else 
-                 ac = new MathAccentInset(ac, nestaccent[i]);
+               case LM_TK_MACRO:
+                       array.push_back(MathMacroTable::cloneTemplate(lval_->name));
+                       break;
+               
+               case LM_TK_LABEL:
+                       curr_label_ = lexArg('{', true);
+                       break;
+               
+               default:
+                       error("Unrecognized token");
+                       lyxerr[Debug::MATHED] << "[" << t << " " << sval_ << "]" << endl;
+                       break;
+
+               } // end of big switch
+
+               if (flags & FLAG_LEAVE) {
+                       flags &= ~FLAG_LEAVE;
+                       break;
+               }
+
+               if (panic) {
+                       lyxerr << " Math Panic, expect problems!" << endl;
+                       //   Search for the end command. 
+                       do {
+                               t = yylex();
+                       } while (is_.good() && t != LM_TK_END && t);
+               } else {
+                       t = yylex();
+               }
        }
-       accent = 0;  // consumed!
-       
-       return ac;
 }
 
 
-MathedInset * doAccent(MathedInset * p)
+void parse_end(LyXLex & lex, int lineno)
 {
-       MathedInset * ac = 0;
-       
-       for (int i= accent-1; i>= 0; i--) {
-               if (i == accent-1)
-                 ac = new MathAccentInset(p, nestaccent[i]);
-               else 
-                 ac = new MathAccentInset(ac, nestaccent[i]);
+       // Update line number
+       lex.setLineNo(lineno);
+
+       // reading of end_inset
+       while (lex.isOK()) {
+               lex.nextToken();
+               if (lex.getString() == "\\end_inset")
+                       break;
+               lyxerr[Debug::MATHED] << "InsetFormula::Read: Garbage before \\end_inset,"
+                       " or missing \\end_inset!" << endl;
        }
-       accent = 0;  // consumed!
-       
-       return ac;
 }
 
+} // anonymous namespace
 
 
 
-LyxArrayBase * mathed_parse(unsigned flags, LyxArrayBase * array,
-                           MathParInset ** mtx)
+MathArray mathed_parse_cell(string const & str)
 {
-   int t = yylex(), tprev = 0;
-   bool panic = false;
-   static int plevel = -1;
-   static int size = LM_ST_TEXT;
-   MathedTextCodes varcode = LM_TC_VAR;
-   MathedInset* binset = 0;
-   static MathMacroTemplate *macro= 0;
-   
-   int brace = 0;
-   int acc_brace = 0;
-   int acc_braces[8];
-   MathParInset * mt = (mtx) ? *mtx: 0;//(MathParInset*)0;
-    MathedRowSt * crow = (mt) ? mt->getRowSt(): 0;
-
-   ++plevel;
-   if (!array) array = new LyxArrayBase;
-   MathedIter data(array);
-   while (t) {
-      if ((flags & FLAG_BRACE) && t != LM_TK_OPEN) {
-        if ((flags & FLAG_BRACK_ARG) && t == '[') {
-        }
-        else {
-            mathPrintError("Expected {. Maybe you forgot to enclose an argument in {}");
-           panic = true;
-           break;
-        }
-      }
-    MathedInsetTypes fractype = LM_OT_FRAC;
-    switch (t) {
-    case LM_TK_ALPHA:
-      {
-        if (accent) {
-            data.Insert(doAccent(yylval.i, varcode));
-        } else
-           data.Insert (yylval.i, varcode);  //LM_TC_VAR);
-        break;
-      }
-    case LM_TK_ARGUMENT:
-      {
-         if (macro) {
-             data.Insert(macro->getMacroPar(yylval.i-1), LM_TC_INSET);
-         } 
-         break;
-      } 
-    case LM_TK_NEWCOMMAND:
-      {
-         int na = 0; 
-
-         LexGetArg('{');
-         // This name lives until quitting, for that reason
-         // I didn't care on deleting explicitly. Later I will.
-         char const *name = strnew(&yytext[1]);
-         // ugly trick to be removed soon (lyx3)
-         char c = getc(yyin);
-         ungetc(c, yyin);
-         if (c == '[') {
-             LexGetArg('[');
-             na = atoi(yytext);
-         }  
-         macro = new MathMacroTemplate(name, na);
-         flags = FLAG_BRACE|FLAG_BRACE_LAST;
-         *mtx = macro;
-         macro->SetData(array);
-         break;
-      }
-    case LM_TK_SPECIAL:
-      {          
-         data.Insert (yylval.i, LM_TC_SPECIAL);
-         break;
-      }
-    case LM_TK_STR:
-      {          
-         if (accent) {
-                 data.Insert(doAccent(yylval.i, LM_TC_CONST));
-         } else
-           data.Insert (yylval.i, LM_TC_CONST);
-         break;
-      }
-    case LM_TK_OPEN:
-      {
-       brace++;
-       if  (accent && tprev == LM_TK_ACCENT) {
-           acc_braces[acc_brace++] = brace;
-           break;
-       }
-       if (flags & FLAG_BRACE_OPT) {
-          flags &= ~FLAG_BRACE_OPT;
-          flags |= FLAG_BRACE;
-       }
-                
-       if (flags & FLAG_BRACE)
-         flags &= ~FLAG_BRACE;
-        else {
-           data.Insert ('{', LM_TC_TEX);
-        }
-       break;
-      }
-    case LM_TK_CLOSE:
-      {
-        brace--;        
-        if (brace < 0) {
-           mathPrintError("Unmatching braces");
-           panic = true;
-           break;
-        }
-        if (acc_brace && brace == acc_braces[acc_brace-1]-1) {
-            acc_brace--;
-            break;
-        }
-        if (flags & FLAG_BRACE_FONT) {
-           varcode = LM_TC_VAR;
-           yy_mtextmode = false;
-           flags &= ~FLAG_BRACE_FONT;
-           break;
-        }
-        if (brace == 0 && (flags & FLAG_BRACE_LAST)) {
-           plevel--;
-           return array;
-        } else {
-           data.Insert ('}', LM_TC_TEX);
-        }
-        break;
-      }
-
-    case '[':
-      {
-        if (flags & FLAG_BRACK_ARG) {
-          flags &= ~FLAG_BRACK_ARG;
-          char rg= LexGetArg('[');
-          if (rg!= ']') {
-             mathPrintError("Expected ']'");
-             panic = true;
-             break;
-          }       
-//        if (arg) strcpy(arg, yytext);
-       } else
-         data.Insert ('[');
-       break;
-      }
-    case ']':
-      {
-         if (flags & FLAG_BRACK_END) {
-             plevel--;
-             return array;
-         } else
-           data.Insert (']');
-       break;
-      }
-
-    case '^':
-      {  
-        MathParInset *p = new MathParInset(size, "", LM_OT_SCRIPT);
-        LyxArrayBase * ar = mathed_parse(FLAG_BRACE_OPT|FLAG_BRACE_LAST, 0);
-        p->SetData(ar);
-//      lyxerr << "UP[" << p->GetStyle() << "]" << endl;
-        data.Insert (p, LM_TC_UP);
-        break;
-      }
-    case '_':
-      {
-        MathParInset * p = new MathParInset(size, "", LM_OT_SCRIPT);
-        LyxArrayBase * ar = mathed_parse(FLAG_BRACE_OPT|FLAG_BRACE_LAST, 0);
-        p->SetData(ar);
-        data.Insert (p, LM_TC_DOWN);
-        break;
-      }
-
-    case LM_TK_LIMIT:
-      {
-        if (binset) {
-           binset->SetLimits(bool(yylval.l->id));
-           binset = 0;
-        }
-        break;
-      }
-      
-    case '&':    // Tab
-      {
-        if ((flags & FLAG_END) && mt && data.getCol()<mt->GetColumns()-1) {
-            data.setNumCols(mt->GetColumns());
-            data.Insert('T', LM_TC_TAB);
-        } else 
-           mathPrintError("Unexpected tab");
-        // debug info. [made that conditional -JMarc]
-        if (lyxerr.debugging(Debug::MATHED))
-                lyxerr << data.getCol() << " " << mt->GetColumns() << endl;
-       break;
-      }
-    case LM_TK_NEWLINE:
-      {
-         if (mt && (flags & FLAG_END)) {
-             if (mt->Permit(LMPF_ALLOW_CR)) {
-                 if (crow) {
-                         crow->setNext(new MathedRowSt(mt->GetColumns()+1)); // this leaks
-                     crow = crow->getNext();
-                 }
-                 data.Insert('K', LM_TC_CR);
-             } else 
-               mathPrintError("Unexpected newline");
-         }
-         break;
-      }
-    case LM_TK_BIGSYM:  
-      {
-        binset = new MathBigopInset(yylval.l->name, yylval.l->id);
-        data.Insert(binset);   
-        break;
-      }
-    case LM_TK_SYM:
-      {
-        if (yylval.l->id < 256) {
-           MathedTextCodes tc = MathIsBOPS(yylval.l->id) ? LM_TC_BOPS: LM_TC_SYMB;
-           if (accent) {
-               data.Insert(doAccent(yylval.l->id, tc));
-           } else
-           data.Insert (yylval.l->id, tc);
-        } else {
-           MathFuncInset *bg = new MathFuncInset(yylval.l->name);
-            if (accent) {
-                    data.Insert(doAccent(bg));
-            } else
-            data.Insert(bg, true);     
-        }
-        break;
-      }
-    case LM_TK_BOP:
-      {
-        if (accent) {
-                data.Insert(doAccent(yylval.i, LM_TC_BOP));
-         } else
-           data.Insert (yylval.i, LM_TC_BOP);
-        break;
-      }
-    case LM_TK_STY:
-      {
-         if (mt) {
-             mt->UserSetSize(yylval.l->id);
-         }
-         break; 
-      }
-    case LM_TK_SPACE:
-      {
-        if (yylval.i>= 0) {
-           MathSpaceInset * sp = new MathSpaceInset(yylval.i);
-           data.Insert(sp);
-        }
-        break;
-      }           
-    case LM_TK_DOTS:
-      {
-        MathDotsInset * p = new MathDotsInset(yylval.l->name, yylval.l->id);
-        data.Insert(p);
-        break;
-      }     
-    case LM_TK_STACK:
-       fractype = LM_OT_STACKREL;
-    case LM_TK_FRAC:
-      {
-        MathFracInset * fc = new MathFracInset(fractype);
-        LyxArrayBase * num = mathed_parse(FLAG_BRACE|FLAG_BRACE_LAST);
-        LyxArrayBase * den = mathed_parse(FLAG_BRACE|FLAG_BRACE_LAST);
-        fc->SetData(num, den);
-        data.Insert(fc, LM_TC_ACTIVE_INSET);
-        break;
-      }
-    case LM_TK_SQRT:
-      {            
-        MathParInset * rt;
-         
-        char c = getc(yyin);
-         
-        if (c == '[') {
-            rt = new MathRootInset(size);
-            rt->setArgumentIdx(0);
-            rt->SetData(mathed_parse(FLAG_BRACK_END, 0, &rt));
-            rt->setArgumentIdx(1);
-        } else {
-            ungetc(c, yyin);
-            rt = new MathSqrtInset(size);
-        }
-        rt->SetData(mathed_parse(FLAG_BRACE|FLAG_BRACE_LAST, 0, &rt));
-        data.Insert(rt, LM_TC_ACTIVE_INSET);
-        break;
-      }
-       
-    case LM_TK_LEFT:
-      {
-        int lfd, rgd;
-        lfd = yylex();
-        if (lfd == LM_TK_SYM || lfd == LM_TK_STR || lfd == LM_TK_BOP|| lfd == LM_TK_SPECIAL)
-          lfd = (lfd == LM_TK_SYM) ? yylval.l->id: yylval.i;
-//      lyxerr << "L[" << lfd << " " << lfd << "]";
-        LyxArrayBase * a = mathed_parse(FLAG_RIGHT);
-        rgd = yylex();
-//      lyxerr << "R[" << rgd << "]";
-        if (rgd == LM_TK_SYM || rgd == LM_TK_STR || rgd == LM_TK_BOP || rgd == LM_TK_SPECIAL)
-          rgd = (rgd == LM_TK_SYM) ? yylval.l->id: yylval.i;    
-        MathDelimInset * dl = new MathDelimInset(lfd, rgd);
-        dl->SetData(a);
-        data.Insert(dl, LM_TC_ACTIVE_INSET);
-//      lyxerr << "RL[" << lfd << " " << rgd << "]";
-        break;
-      }
-    case LM_TK_RIGHT:
-      {
-        if (flags & FLAG_RIGHT) { 
-           plevel--;
-           return array;
-        } else {
-           mathPrintError("Unmatched right delimiter");
-//         panic = true;
-        }
-        break;
-      }
-
-    case LM_TK_FONT:
-      {
-        varcode = static_cast<MathedTextCodes>(yylval.l->id);
-         yy_mtextmode = bool(varcode == LM_TC_TEXTRM);
-        flags |= (FLAG_BRACE|FLAG_BRACE_FONT);
-       break;
-      }
-    case LM_TK_WIDE:
-      {  
-        MathDecorationInset * sq = new MathDecorationInset(yylval.l->id,
-                                                           size);
-        sq->SetData(mathed_parse(FLAG_BRACE|FLAG_BRACE_LAST));
-        data.Insert(sq, LM_TC_ACTIVE_INSET);
-        break;
-      }
-      
-    case LM_TK_ACCENT: setAccent(yylval.l->id); break;
-         
-    case LM_TK_NONUM:
-      {
-         if (crow)
-           crow->setNumbered(false);
-         break;
-      }
-
-    case LM_TK_PMOD:
-    case LM_TK_FUNC:
-      {
-         MathedInset * bg = new MathFuncInset(yylval.l->name); 
-         if (accent) {
-             data.Insert(t);
-         } else
-           data.Insert(bg);
-         break;
-      }
-    case LM_TK_FUNCLIM:
-      {
-        data.Insert(new MathFuncInset(yylval.l->name, LM_OT_FUNCLIM));
-        break;
-      }
-    case LM_TK_UNDEF:
-      {
-         
-       MathMacro * p = 
-        MathMacroTable::mathMTable.getMacro(yylval.s);
-       if (p) {
-          if (accent) 
-            data.Insert(doAccent(p), p->getTCode());
-          else
-            data.Insert(p, p->getTCode());
-          for (int i= 0; p->setArgumentIdx(i); i++)
-            p->SetData(mathed_parse(FLAG_BRACE|FLAG_BRACE_LAST));
-       }
-       else {
-          MathedInset * q = new MathFuncInset(yylval.s, LM_OT_UNDEF);
-          if (accent) {
-                  data.Insert(doAccent(q));
-          } else {
-              data.Insert(q);
-          }
-       }
-        break;
-      }
-    case LM_TK_END:
-      {
-         if (mathed_env != yylval.i && yylval.i!= LM_EN_ARRAY)
-          mathPrintError("Unmatched environment");
-        // debug info [made that conditional -JMarc]
-        if (lyxerr.debugging(Debug::MATHED))
-                lyxerr << "[" << yylval.i << "]" << endl;
-        plevel--;
-        if (mt) { // && (flags & FLAG_END)) {
-           mt->SetData(array);
-           array = 0;
-        }
-        return array;
-      }
-    case LM_TK_BEGIN:
-      {
-        if (yylval.i == LM_EN_ARRAY) {
-           char ar[120], ar2[8];
-           ar[0] = ar2[0] = '\0'; 
-            char rg= LexGetArg(0);
-           if (rg == ']') {
-              strcpy(ar2, yytext);
-              rg = LexGetArg('{');
-           }
-           strcpy(ar, yytext);
-           int nc = parse_align(ar, ar2);
-           MathParInset * mm = new MathMatrixInset(nc, 0);
-           mm->SetAlign(ar2[0], ar);
-                   data.Insert(mm, LM_TC_ACTIVE_INSET);
-            mathed_parse(FLAG_END, mm->GetData(), &mm);
-        } else
-        if (yylval.i>= LM_EN_INTEXT && yylval.i<= LM_EN_EQNARRAY) {
-            if (plevel!= 0) {
-                mathPrintError("Misplaced environment");
-                break;
-            }
-            if (!mt) {
-                mathPrintError("0 paragraph.");
-                panic = true;
-            }
-            
-            mathed_env = yylval.i;
-            if (mathed_env>= LM_EN_DISPLAY) {
-                size = LM_ST_DISPLAY;
-                if (mathed_env>LM_EN_EQUATION) {
-                    mt = new MathMatrixInset(3, -1);
-                    mt->SetAlign(' ', "rcl");
-                    if (mtx) *mtx = mt;
-                    flags |= FLAG_END;
-//                  data.Insert(' ', LM_TC_TAB);
-//                  data.Insert(' ', LM_TC_TAB);
-//                  data.Reset();
-                }
-                mt->SetStyle(size);
-                mt->SetType(mathed_env);
-                crow = mt->getRowSt();
-            }
-                              
-#ifdef DEBUG
-            lyxerr << "MATH BEGIN[" << mathed_env << "]" << endl;
-#endif
-        } else {
-//          lyxerr << "MATHCRO[" << yytext << "]";
-            MathMacro * p = 
-              MathMacroTable::mathMTable.getMacro(yytext);
-            if (p) {
-                data.Insert(p, p->getTCode());
-                p->setArgumentIdx(0);
-                mathed_parse(FLAG_END, p->GetData(), reinterpret_cast<MathParInset**>(&p));
-//              for (int i= 0; p->setArgumentIdx(i); i++)
-//                p->SetData(mathed_parse(FLAG_BRACE|FLAG_BRACE_LAST));
-            } else 
-              mathPrintError("Unrecognized environment");
-        }
-        break;
-      }
-       
-    case LM_TK_MACRO:
-     { 
-         MathedInset * p = 
-           MathMacroTable::mathMTable.getMacro(yylval.l->name);
-        
-         if (p) {
-             if (accent) {
-               data.Insert(doAccent(p));
-             } else
-               data.Insert(p, static_cast<MathMacro*>(p)->getTCode());
-         }
-         break;
-      }
-       
-     case LM_TK_LABEL:
-       {          
-         char rg = LexGetArg('\0', true);
-         if (rg != '}') {
-            mathPrintError("Expected '{'");
-             // debug info
-            lyxerr << "[" << yytext << "]" << endl;
-             panic = true;
-            break;
-         } 
-         if (crow) {
-             // This is removed by crow's destructor. Bad design? yes, this 
-             // will be changed after 0.12
-             crow->setLabel(strnew(yytext));
-         }
-         else {
-                 // where is this math_label free'ed?
-                 // Supposedly in ~formula, another bad hack,
-                 // give me some time please.
-                 mathed_label = strnew(yytext);
-         }
-#ifdef DEBUG
-         lyxerr << "Label[" << mathed_label << "]" << endl;
-#endif
-         break;
-       } 
-     default:
-       mathPrintError("Unrecognized token");
-       // debug info
-       lyxerr << "[" << t << " " << yytext << "]" << endl;
-       break;
-    }
-    tprev = t;
-    if (panic) {
-           lyxerr << " Math Panic, expect problems!" << endl;
-       //   Search for the end command. 
-       do t = yylex (); while (t != LM_TK_END && t);
-    } else
-     t = yylex ();
-   
-   if ((flags & FLAG_BRACE_OPT)/* && t!= '^' && t!= '_'*/) {
-        flags &= ~FLAG_BRACE_OPT;
-       //data.Insert (LM_TC_CLOSE);
-       break;
-    }
-   }
-   plevel--;
-   return array;
+       istringstream is(str.c_str());
+       Parser parser(is);
+       MathArray ar;
+       parser.parse_into(ar, 0);
+       return ar;
+}
+
+
+
+MathMacroTemplate * mathed_parse_macro(string const & str)
+{
+       istringstream is(str.c_str());
+       Parser parser(is);
+       return parser.parse_macro();
+}
+
+MathMacroTemplate * mathed_parse_macro(istream & is)
+{
+       Parser parser(is);
+       return parser.parse_macro();
+}
+
+MathMacroTemplate * mathed_parse_macro(LyXLex & lex)
+{
+       Parser parser(lex);
+       MathMacroTemplate * p = parser.parse_macro();
+       parse_end(lex, parser.lineno());
+       return p;
 }
 
 
-void mathed_parser_file(FILE * file, int lineno)
+
+MathMatrixInset * mathed_parse_normal(string const & str)
 {
-    yyin = file;
-    yylineno = lineno;
-    if (!MathMacroTable::built)
-       MathMacroTable::mathMTable.builtinMacros();
+       istringstream is(str.c_str());
+       Parser parser(is);
+       return parser.parse_normal();
 }
 
+MathMatrixInset * mathed_parse_normal(istream & is)
+{
+       Parser parser(is);
+       return parser.parse_normal();
+}
 
-int mathed_parser_lineno()
+MathMatrixInset * mathed_parse_normal(LyXLex & lex)
 {
-    return yylineno;
+       Parser parser(lex);
+       MathMatrixInset * p = parser.parse_normal();
+       parse_end(lex, parser.lineno());
+       return p;
 }