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f660211af3
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4496 a592a061-630c-0410-9148-cb99ea01b6c8
1155 lines
25 KiB
C
1155 lines
25 KiB
C
/** The math parser
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\author André Pönitz (2001)
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*/
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/*
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If someone desperately needs partial "structures" (such as a few
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cells of an array inset or similar) (s)he could uses the
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following hack as starting point to write some macros:
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\newif\ifcomment
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\commentfalse
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\ifcomment
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\def\makeamptab{\catcode`\&=4\relax}
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\def\makeampletter{\catcode`\&=11\relax}
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\def\b{\makeampletter\expandafter\makeamptab\bi}
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\long\def\bi#1\e{}
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\else
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\def\b{}\def\e{}
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\fi
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...
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\[\begin{array}{ccc}
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1 & 2\b & 3^2\\
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4 & 5\e & 6\\
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7 & 8 & 9
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\end{array}\]
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*/
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#include <config.h>
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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "math_parser.h"
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#include "math_inset.h"
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#include "math_arrayinset.h"
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#include "math_braceinset.h"
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#include "math_boxinset.h"
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#include "math_charinset.h"
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#include "math_deliminset.h"
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#include "math_extern.h"
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#include "math_factory.h"
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#include "math_kerninset.h"
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#include "math_macro.h"
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#include "math_macrotable.h"
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#include "math_macrotemplate.h"
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#include "math_hullinset.h"
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#include "math_rootinset.h"
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#include "math_sizeinset.h"
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#include "math_sqrtinset.h"
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#include "math_scriptinset.h"
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#include "math_sqrtinset.h"
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#include "math_support.h"
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#include "math_xyarrowinset.h"
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#include "ref_inset.h"
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#include "lyxlex.h"
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#include "debug.h"
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#include "support/LAssert.h"
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#include "support/lstrings.h"
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#include <cctype>
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#include <stack>
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#include <algorithm>
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using std::istream;
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using std::ostream;
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using std::ios;
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using std::endl;
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using std::stack;
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using std::fill;
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using std::vector;
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using std::atoi;
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//#define FILEDEBUG
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namespace {
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bool stared(string const & s)
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{
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string::size_type const n = s.size();
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return n && s[n - 1] == '*';
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}
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// These are TeX's catcodes
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enum CatCode {
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catEscape, // 0 backslash
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catBegin, // 1 {
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catEnd, // 2 }
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catMath, // 3 $
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catAlign, // 4 &
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catNewline, // 5 ^^M
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catParameter, // 6 #
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catSuper, // 7 ^
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catSub, // 8 _
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catIgnore, // 9
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catSpace, // 10 space
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catLetter, // 11 a-zA-Z
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catOther, // 12 none of the above
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catActive, // 13 ~
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catComment, // 14 %
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catInvalid // 15 <delete>
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};
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CatCode theCatcode[256];
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inline CatCode catcode(unsigned char c)
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{
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return theCatcode[c];
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}
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enum {
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FLAG_BRACE_LAST = 1 << 1, // last closing brace ends the parsing
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FLAG_RIGHT = 1 << 2, // next \\right ends the parsing process
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FLAG_END = 1 << 3, // next \\end ends the parsing process
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FLAG_BRACK_END = 1 << 4, // next closing bracket ends the parsing
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FLAG_TEXTMODE = 1 << 5, // we are in a box
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FLAG_ITEM = 1 << 6, // read a (possibly braced token)
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FLAG_LEAVE = 1 << 7, // leave the loop at the end
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FLAG_SIMPLE = 1 << 8, // next $ leaves the loop
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FLAG_EQUATION = 1 << 9, // next \] leaves the loop
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FLAG_SIMPLE2 = 1 << 10 // next \) leaves the loop
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};
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void catInit()
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{
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fill(theCatcode, theCatcode + 256, catOther);
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fill(theCatcode + 'a', theCatcode + 'z' + 1, catLetter);
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fill(theCatcode + 'A', theCatcode + 'Z' + 1, catLetter);
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theCatcode['\\'] = catEscape;
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theCatcode['{'] = catBegin;
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theCatcode['}'] = catEnd;
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theCatcode['$'] = catMath;
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theCatcode['&'] = catAlign;
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theCatcode['\n'] = catNewline;
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theCatcode['#'] = catParameter;
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theCatcode['^'] = catSuper;
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theCatcode['_'] = catSub;
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theCatcode[''] = catIgnore;
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theCatcode[' '] = catSpace;
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theCatcode['\t'] = catSpace;
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theCatcode['\r'] = catSpace;
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theCatcode['~'] = catActive;
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theCatcode['%'] = catComment;
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}
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//
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// Helper class for parsing
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//
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class Token {
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public:
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///
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Token() : cs_(), char_(0), cat_(catIgnore) {}
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///
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Token(char c, CatCode cat) : cs_(), char_(c), cat_(cat) {}
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///
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Token(string const & cs) : cs_(cs), char_(0), cat_(catIgnore) {}
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///
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string const & cs() const { return cs_; }
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///
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CatCode cat() const { return cat_; }
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///
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char character() const { return char_; }
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///
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string asString() const;
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///
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bool isCR() const;
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private:
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///
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string cs_;
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///
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char char_;
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///
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CatCode cat_;
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};
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bool Token::isCR() const
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{
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return cs_ == "\\" || cs_ == "cr" || cs_ == "crcr";
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}
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string Token::asString() const
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{
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return cs_.size() ? cs_ : string(1, char_);
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}
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ostream & operator<<(ostream & os, Token const & t)
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{
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if (t.cs().size())
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os << "\\" << t.cs();
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else
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os << "[" << t.character() << "," << t.cat() << "]";
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return os;
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}
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class Parser {
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public:
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///
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Parser(LyXLex & lex);
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///
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Parser(istream & is);
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///
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bool parse_macro(string & name);
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///
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bool parse_normal(MathAtom & at);
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///
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void parse_into(MathArray & array, unsigned flags, bool mathmode);
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///
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int lineno() const { return lineno_; }
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///
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void putback();
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private:
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///
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void parse_into1(MathGridInset & grid, unsigned flags, bool mathmode, bool numbered);
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///
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void parse_into2(MathAtom & at, unsigned flags, bool mathmode, bool numbered);
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/// get arg delimited by 'left' and 'right'
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string getArg(char left, char right);
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///
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char getChar();
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///
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void error(string const & msg);
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/// dump contents to screen
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void dump() const;
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private:
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///
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void tokenize(istream & is);
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///
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void tokenize(string const & s);
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///
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void skipSpaceTokens(istream & is, char c);
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///
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void push_back(Token const & t);
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///
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void pop_back();
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///
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Token const & prevToken() const;
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///
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Token const & nextToken() const;
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///
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Token const & getToken();
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/// skips spaces if any
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void skipSpaces();
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///
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void lex(string const & s);
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///
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bool good() const;
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///
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int lineno_;
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///
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vector<Token> tokens_;
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///
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unsigned pos_;
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};
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Parser::Parser(LyXLex & lexer)
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: lineno_(lexer.getLineNo()), pos_(0)
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{
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tokenize(lexer.getStream());
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lexer.eatLine();
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}
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Parser::Parser(istream & is)
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: lineno_(0), pos_(0)
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{
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tokenize(is);
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}
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void Parser::push_back(Token const & t)
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{
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tokens_.push_back(t);
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}
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void Parser::pop_back()
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{
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tokens_.pop_back();
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}
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Token const & Parser::prevToken() const
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{
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static const Token dummy;
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return pos_ > 0 ? tokens_[pos_ - 1] : dummy;
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}
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Token const & Parser::nextToken() const
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{
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static const Token dummy;
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return good() ? tokens_[pos_] : dummy;
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}
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Token const & Parser::getToken()
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{
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static const Token dummy;
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//lyxerr << "looking at token " << tokens_[pos_] << " pos: " << pos_ << '\n';
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return good() ? tokens_[pos_++] : dummy;
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}
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void Parser::skipSpaces()
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{
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while (nextToken().cat() == catSpace)
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getToken();
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}
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void Parser::putback()
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{
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--pos_;
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}
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bool Parser::good() const
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{
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return pos_ < tokens_.size();
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}
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char Parser::getChar()
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{
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if (!good())
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error("The input stream is not well...");
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return tokens_[pos_++].character();
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}
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string Parser::getArg(char left, char right)
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{
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skipSpaces();
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string result;
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char c = getChar();
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if (c != left)
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putback();
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else
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while ((c = getChar()) != right && good())
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result += c;
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return result;
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}
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void Parser::tokenize(istream & is)
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{
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// eat everything up to the next \end_inset or end of stream
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// and store it in s for further tokenization
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string s;
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char c;
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while (is.get(c)) {
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s += c;
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if (s.size() >= 10 && s.substr(s.size() - 10) == "\\end_inset") {
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s = s.substr(0, s.size() - 10);
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break;
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}
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}
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// tokenize buffer
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tokenize(s);
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}
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void Parser::skipSpaceTokens(istream & is, char c)
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{
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// skip trailing spaces
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while (catcode(c) == catSpace || catcode(c) == catNewline)
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if (!is.get(c))
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break;
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//lyxerr << "putting back: " << c << "\n";
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is.putback(c);
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}
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void Parser::tokenize(string const & buffer)
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{
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static bool init_done = false;
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if (!init_done) {
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catInit();
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init_done = true;
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}
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istringstream is(buffer.c_str(), ios::in | ios::binary);
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char c;
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while (is.get(c)) {
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//lyxerr << "reading c: " << c << "\n";
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switch (catcode(c)) {
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case catNewline: {
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++lineno_;
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is.get(c);
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if (catcode(c) == catNewline)
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; //push_back(Token("par"));
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else {
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push_back(Token(' ', catSpace));
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is.putback(c);
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}
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break;
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}
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case catComment: {
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while (is.get(c) && catcode(c) != catNewline)
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;
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++lineno_;
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break;
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}
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case catEscape: {
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is.get(c);
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if (!is) {
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error("unexpected end of input");
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} else {
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string s(1, c);
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if (catcode(c) == catLetter) {
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// collect letters
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while (is.get(c) && catcode(c) == catLetter)
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s += c;
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skipSpaceTokens(is, c);
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}
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push_back(Token(s));
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}
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break;
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}
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case catSuper:
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case catSub: {
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push_back(Token(c, catcode(c)));
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is.get(c);
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skipSpaceTokens(is, c);
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break;
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}
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case catIgnore: {
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lyxerr << "ignoring a char: " << int(c) << "\n";
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break;
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}
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default:
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push_back(Token(c, catcode(c)));
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}
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}
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#ifdef FILEDEBUG
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dump();
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#endif
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}
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void Parser::dump() const
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{
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lyxerr << "\nTokens: ";
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for (unsigned i = 0; i < tokens_.size(); ++i) {
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if (i == pos_)
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lyxerr << " <#> ";
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lyxerr << tokens_[i];
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}
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lyxerr << " pos: " << pos_ << "\n";
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}
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void Parser::error(string const & msg)
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{
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lyxerr << "Line ~" << lineno_ << ": Math parse error: " << msg << endl;
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dump();
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//exit(1);
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}
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bool Parser::parse_macro(string & name)
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{
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int nargs = 0;
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name = "{error}";
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skipSpaces();
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if (nextToken().cs() == "def") {
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getToken();
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name = getToken().cs();
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string pars;
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while (good() && nextToken().cat() != catBegin)
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pars += getToken().cs();
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if (!good()) {
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error("bad stream in parse_macro\n");
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return false;
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}
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//lyxerr << "read \\def parameter list '" << pars << "'\n";
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if (!pars.empty()) {
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error("can't handle non-empty parameter lists\n");
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return false;
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}
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} else if (nextToken().cs() == "newcommand") {
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getToken();
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if (getToken().cat() != catBegin) {
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error("'{' in \\newcommand expected (1) \n");
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return false;
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}
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name = getToken().cs();
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|
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if (getToken().cat() != catEnd) {
|
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error("'}' expected\n");
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return false;
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}
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|
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string arg = getArg('[', ']');
|
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if (!arg.empty())
|
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nargs = atoi(arg.c_str());
|
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|
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} else {
|
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lyxerr << "\\newcommand or \\def expected\n";
|
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return false;
|
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}
|
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|
||
|
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if (getToken().cat() != catBegin) {
|
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error("'{' in macro definition expected (2)\n");
|
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return false;
|
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}
|
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|
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MathArray ar1;
|
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parse_into(ar1, FLAG_BRACE_LAST, true);
|
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|
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// we cannot handle recursive stuff at all
|
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MathArray test;
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test.push_back(createMathInset(name));
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if (ar1.contains(test)) {
|
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error("we cannot handle recursive macros at all.\n");
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return false;
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}
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|
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// is a version for display attached?
|
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MathArray ar2;
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parse_into(ar2, FLAG_ITEM, true);
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|
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MathMacroTable::create(name, nargs, ar1, ar2);
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return true;
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}
|
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|
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|
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bool Parser::parse_normal(MathAtom & at)
|
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{
|
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MathArray ar;
|
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parse_into(ar, false, false);
|
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if (ar.size() != 1) {
|
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lyxerr << "Unusual contents found: " << ar << endl;
|
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at.reset(new MathParInset);
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at->cell(0) = ar;
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return true;
|
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}
|
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at = ar[0];
|
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return true;
|
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}
|
||
|
||
|
||
void Parser::parse_into(MathArray & array, unsigned flags, bool mathmode)
|
||
{
|
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MathGridInset grid(1, 1);
|
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parse_into1(grid, flags, mathmode, false);
|
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array = grid.cell(0);
|
||
// remove 'unnecessary' braces:
|
||
if (array.size() == 1 && array.back()->asBraceInset()) {
|
||
lyxerr << "extra braces removed\n";
|
||
array = array.back()->asBraceInset()->cell(0);
|
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}
|
||
}
|
||
|
||
|
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void Parser::parse_into2(MathAtom & at, unsigned flags,
|
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bool mathmode, bool numbered)
|
||
{
|
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parse_into1(*(at->asGridInset()), flags, mathmode, numbered);
|
||
}
|
||
|
||
|
||
void Parser::parse_into1(MathGridInset & grid, unsigned flags,
|
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bool mathmode, bool numbered)
|
||
{
|
||
int limits = 0;
|
||
MathGridInset::row_type cellrow = 0;
|
||
MathGridInset::col_type cellcol = 0;
|
||
MathArray * cell = &grid.cell(grid.index(cellrow, cellcol));
|
||
|
||
if (grid.asHullInset())
|
||
grid.asHullInset()->numbered(cellrow, numbered);
|
||
|
||
//dump();
|
||
//lyxerr << "grid: " << grid << endl;
|
||
|
||
while (good()) {
|
||
Token const & t = getToken();
|
||
|
||
#ifdef FILEDEBUG
|
||
lyxerr << "t: " << t << " flags: " << flags << "\n";
|
||
//cell->dump();
|
||
lyxerr << "\n";
|
||
#endif
|
||
|
||
if (flags & FLAG_ITEM) {
|
||
if (t.cat() == catSpace)
|
||
continue;
|
||
|
||
flags &= ~FLAG_ITEM;
|
||
if (t.cat() == catBegin) {
|
||
// skip the brace and collect everything to the next matching
|
||
// closing brace
|
||
flags |= FLAG_BRACE_LAST;
|
||
continue;
|
||
}
|
||
|
||
// handle only this single token, leave the loop if done
|
||
flags |= FLAG_LEAVE;
|
||
}
|
||
|
||
//
|
||
// cat codes
|
||
//
|
||
if (t.cat() == catMath) {
|
||
if (!mathmode) {
|
||
// we are inside some text mode thingy, so opening new math is allowed
|
||
Token const & n = getToken();
|
||
if (n.cat() == catMath) {
|
||
// TeX's $$...$$ syntax for displayed math
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_EQUATION)));
|
||
parse_into2(cell->back(), FLAG_SIMPLE, true, false);
|
||
getToken(); // skip the second '$' token
|
||
} else {
|
||
// simple $...$ stuff
|
||
putback();
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_SIMPLE)));
|
||
parse_into2(cell->back(), FLAG_SIMPLE, true, false);
|
||
}
|
||
}
|
||
|
||
else if (flags & FLAG_SIMPLE) {
|
||
// this is the end of the formula
|
||
return;
|
||
}
|
||
|
||
else {
|
||
error("something strange in the parser\n");
|
||
break;
|
||
}
|
||
}
|
||
|
||
else if (t.cat() == catLetter)
|
||
cell->push_back(MathAtom(new MathCharInset(t.character())));
|
||
|
||
else if (t.cat() == catSpace && !mathmode)
|
||
cell->push_back(MathAtom(new MathCharInset(t.character())));
|
||
|
||
else if (t.cat() == catParameter) {
|
||
Token const & n = getToken();
|
||
cell->push_back(MathAtom(new MathMacroArgument(n.character()-'0')));
|
||
}
|
||
|
||
else if (t.cat() == catBegin) {
|
||
MathArray ar;
|
||
parse_into(ar, FLAG_BRACE_LAST, mathmode);
|
||
#ifndef WITH_WARNINGS
|
||
#warning this might be wrong in general!
|
||
#endif
|
||
// ignore braces around simple items
|
||
if ((ar.size() == 1 && !ar.front()->needsBraces()
|
||
|| (ar.size() == 2 && !ar.front()->needsBraces()
|
||
&& ar.back()->asScriptInset()))
|
||
|| (ar.size() == 0 && cell->size() == 0))
|
||
{
|
||
cell->push_back(ar);
|
||
} else {
|
||
cell->push_back(MathAtom(new MathBraceInset));
|
||
cell->back()->cell(0).swap(ar);
|
||
}
|
||
}
|
||
|
||
else if (t.cat() == catEnd) {
|
||
if (flags & FLAG_BRACE_LAST)
|
||
return;
|
||
error("found '}' unexpectedly");
|
||
//lyx::Assert(0);
|
||
//add(cell, '}', LM_TC_TEX);
|
||
}
|
||
|
||
else if (t.cat() == catAlign) {
|
||
++cellcol;
|
||
//lyxerr << " column now " << cellcol << " max: " << grid.ncols() << "\n";
|
||
if (cellcol == grid.ncols()) {
|
||
lyxerr << "adding column " << cellcol << "\n";
|
||
grid.addCol(cellcol - 1);
|
||
}
|
||
cell = &grid.cell(grid.index(cellrow, cellcol));
|
||
}
|
||
|
||
else if (t.cat() == catSuper || t.cat() == catSub) {
|
||
bool up = (t.cat() == catSuper);
|
||
MathScriptInset * p = 0;
|
||
if (cell->size())
|
||
p = cell->back()->asScriptInset();
|
||
if (!p || p->has(up)) {
|
||
cell->push_back(MathAtom(new MathScriptInset(up)));
|
||
p = cell->back()->asScriptInset();
|
||
}
|
||
p->ensure(up);
|
||
parse_into(p->cell(up), FLAG_ITEM, mathmode);
|
||
p->limits(limits);
|
||
limits = 0;
|
||
}
|
||
|
||
else if (t.character() == ']' && (flags & FLAG_BRACK_END))
|
||
return;
|
||
|
||
else if (t.cat() == catOther)
|
||
cell->push_back(MathAtom(new MathCharInset(t.character())));
|
||
|
||
//
|
||
// control sequences
|
||
//
|
||
else if (t.cs() == "(") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_SIMPLE)));
|
||
parse_into2(cell->back(), FLAG_SIMPLE2, true, false);
|
||
}
|
||
|
||
else if (t.cs() == "[") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_EQUATION)));
|
||
parse_into2(cell->back(), FLAG_EQUATION, true, false);
|
||
}
|
||
|
||
else if (t.cs() == "protect")
|
||
// ignore \\protect, will hopefully be re-added during output
|
||
;
|
||
|
||
else if (t.cs() == "end") {
|
||
if (flags & FLAG_END) {
|
||
// eat environment name
|
||
//string const name =
|
||
getArg('{', '}');
|
||
// FIXME: check that we ended the correct environment
|
||
return;
|
||
}
|
||
error("found 'end' unexpectedly");
|
||
}
|
||
|
||
else if (t.cs() == ")") {
|
||
if (flags & FLAG_SIMPLE2)
|
||
return;
|
||
error("found '\\)' unexpectedly");
|
||
}
|
||
|
||
else if (t.cs() == "]") {
|
||
if (flags & FLAG_EQUATION)
|
||
return;
|
||
error("found '\\]' unexpectedly");
|
||
}
|
||
|
||
else if (t.cs() == "\\") {
|
||
grid.vcrskip(LyXLength(getArg('[', ']')), cellrow);
|
||
++cellrow;
|
||
cellcol = 0;
|
||
if (cellrow == grid.nrows())
|
||
grid.addRow(cellrow - 1);
|
||
if (grid.asHullInset())
|
||
grid.asHullInset()->numbered(cellrow, numbered);
|
||
cell = &grid.cell(grid.index(cellrow, cellcol));
|
||
}
|
||
|
||
#if 1
|
||
else if (t.cs() == "multicolumn") {
|
||
// extract column count and insert dummy cells
|
||
MathArray count;
|
||
parse_into(count, FLAG_ITEM, mathmode);
|
||
int cols = 1;
|
||
if (!extractNumber(count, cols)) {
|
||
lyxerr << " can't extract number of cells from " << count << "\n";
|
||
}
|
||
// resize the table if necessary
|
||
for (int i = 0; i < cols; ++i) {
|
||
++cellcol;
|
||
if (cellcol == grid.ncols()) {
|
||
lyxerr << "adding column " << cellcol << "\n";
|
||
grid.addCol(cellcol - 1);
|
||
}
|
||
cell = &grid.cell(grid.index(cellrow, cellcol));
|
||
// mark this as dummy
|
||
grid.cellinfo(grid.index(cellrow, cellcol)).dummy_ = true;
|
||
}
|
||
// the last cell is the real thng, not a dummy
|
||
grid.cellinfo(grid.index(cellrow, cellcol)).dummy_ = false;
|
||
|
||
// read special alignment
|
||
MathArray align;
|
||
parse_into(align, FLAG_ITEM, mathmode);
|
||
//grid.cellinfo(grid.index(cellrow, cellcol)).align_ = extractString(align);
|
||
|
||
// parse the remaining contents into the "real" cell
|
||
parse_into(*cell, FLAG_ITEM, mathmode);
|
||
}
|
||
#endif
|
||
|
||
else if (t.cs() == "limits")
|
||
limits = 1;
|
||
|
||
else if (t.cs() == "nolimits")
|
||
limits = -1;
|
||
|
||
else if (t.cs() == "nonumber") {
|
||
if (grid.asHullInset())
|
||
grid.asHullInset()->numbered(cellrow, false);
|
||
}
|
||
|
||
else if (t.cs() == "number") {
|
||
if (grid.asHullInset())
|
||
grid.asHullInset()->numbered(cellrow, true);
|
||
}
|
||
|
||
else if (t.cs() == "hline") {
|
||
if (grid.asHullInset())
|
||
grid.asHullInset()->rowinfo(cellrow + 1);
|
||
}
|
||
|
||
else if (t.cs() == "sqrt") {
|
||
char c = getChar();
|
||
if (c == '[') {
|
||
cell->push_back(MathAtom(new MathRootInset));
|
||
parse_into(cell->back()->cell(0), FLAG_BRACK_END, mathmode);
|
||
parse_into(cell->back()->cell(1), FLAG_ITEM, mathmode);
|
||
} else {
|
||
putback();
|
||
cell->push_back(MathAtom(new MathSqrtInset));
|
||
parse_into(cell->back()->cell(0), FLAG_ITEM, mathmode);
|
||
}
|
||
}
|
||
|
||
else if (t.cs() == "ref") {
|
||
cell->push_back(MathAtom(new RefInset));
|
||
char c = getChar();
|
||
if (c == '[')
|
||
parse_into(cell->back()->cell(1), FLAG_BRACK_END, mathmode);
|
||
else
|
||
putback();
|
||
parse_into(cell->back()->cell(0), FLAG_ITEM, mathmode);
|
||
}
|
||
|
||
else if (t.cs() == "left") {
|
||
string l = getToken().asString();
|
||
MathArray ar;
|
||
parse_into(ar, FLAG_RIGHT, mathmode);
|
||
string r = getToken().asString();
|
||
cell->push_back(MathAtom(new MathDelimInset(l, r, ar)));
|
||
}
|
||
|
||
else if (t.cs() == "right") {
|
||
if (flags & FLAG_RIGHT)
|
||
return;
|
||
//lyxerr << "got so far: '" << cell << "'\n";
|
||
error("Unmatched right delimiter");
|
||
return;
|
||
}
|
||
|
||
else if (t.cs() == "begin") {
|
||
string const name = getArg('{', '}');
|
||
if (name == "array" || name == "subarray") {
|
||
string const valign = getArg('[', ']') + 'c';
|
||
string const halign = getArg('{', '}');
|
||
cell->push_back(MathAtom(new MathArrayInset(name, valign[0], halign)));
|
||
parse_into2(cell->back(), FLAG_END, mathmode, false);
|
||
}
|
||
|
||
else if (name == "split" || name == "cases" ||
|
||
name == "gathered" || name == "aligned") {
|
||
cell->push_back(createMathInset(name));
|
||
parse_into2(cell->back(), FLAG_END, mathmode, false);
|
||
}
|
||
|
||
else if (name == "math") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_SIMPLE)));
|
||
parse_into2(cell->back(), FLAG_SIMPLE, true, true);
|
||
}
|
||
|
||
else if (name == "equation" || name == "equation*"
|
||
|| name == "displaymath") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_EQUATION)));
|
||
parse_into2(cell->back(), FLAG_END, true, (name == "equation"));
|
||
}
|
||
|
||
else if (name == "eqnarray" || name == "eqnarray*") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_EQNARRAY)));
|
||
parse_into2(cell->back(), FLAG_END, true, !stared(name));
|
||
}
|
||
|
||
else if (name == "align" || name == "align*") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_ALIGN)));
|
||
parse_into2(cell->back(), FLAG_END, true, !stared(name));
|
||
}
|
||
|
||
else if (name == "alignat" || name == "alignat*") {
|
||
// ignore this for a while
|
||
getArg('{', '}');
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_ALIGNAT)));
|
||
parse_into2(cell->back(), FLAG_END, true, !stared(name));
|
||
}
|
||
|
||
else if (name == "xalignat" || name == "xalignat*") {
|
||
// ignore this for a while
|
||
getArg('{', '}');
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_XALIGNAT)));
|
||
parse_into2(cell->back(), FLAG_END, true, !stared(name));
|
||
}
|
||
|
||
else if (name == "xxalignat") {
|
||
// ignore this for a while
|
||
getArg('{', '}');
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_XXALIGNAT)));
|
||
parse_into2(cell->back(), FLAG_END, true, !stared(name));
|
||
}
|
||
|
||
else if (name == "multline" || name == "multline*") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_MULTLINE)));
|
||
parse_into2(cell->back(), FLAG_END, true, !stared(name));
|
||
}
|
||
|
||
else if (name == "gather" || name == "gather*") {
|
||
cell->push_back(MathAtom(new MathHullInset(LM_OT_GATHER)));
|
||
parse_into2(cell->back(), FLAG_END, true, !stared(name));
|
||
}
|
||
|
||
else {
|
||
latexkeys const * l = in_word_set(name);
|
||
if (l) {
|
||
if (l->inset == "matrix") {
|
||
cell->push_back(createMathInset(name));
|
||
parse_into2(cell->back(), FLAG_END, mathmode, false);
|
||
}
|
||
} else {
|
||
lyxerr << "unknow math inset begin '" << name << "'\n";
|
||
}
|
||
}
|
||
}
|
||
|
||
else if (t.cs() == "kern") {
|
||
#ifdef WITH_WARNINGS
|
||
#warning A hack...
|
||
#endif
|
||
string s;
|
||
while (1) {
|
||
Token const & t = getToken();
|
||
if (!good()) {
|
||
putback();
|
||
break;
|
||
}
|
||
s += t.character();
|
||
if (isValidLength(s))
|
||
break;
|
||
}
|
||
cell->push_back(MathAtom(new MathKernInset(s)));
|
||
}
|
||
|
||
else if (t.cs() == "label") {
|
||
if (grid.asHullInset())
|
||
grid.asHullInset()->label(cellrow, getArg('{', '}'));
|
||
}
|
||
|
||
else if (t.cs() == "choose" || t.cs() == "over" || t.cs() == "atop") {
|
||
MathAtom p = createMathInset(t.cs());
|
||
cell->swap(p->cell(0));
|
||
parse_into(p->cell(1), flags, mathmode);
|
||
cell->push_back(p);
|
||
return;
|
||
}
|
||
|
||
else if (t.cs() == "substack") {
|
||
cell->push_back(createMathInset(t.cs()));
|
||
parse_into2(cell->back(), FLAG_ITEM, mathmode, false);
|
||
}
|
||
|
||
else if (t.cs() == "xymatrix") {
|
||
cell->push_back(createMathInset(t.cs()));
|
||
parse_into2(cell->back(), FLAG_ITEM, mathmode, false);
|
||
}
|
||
|
||
#if 0
|
||
// Disabled
|
||
else if (1 && t.cs() == "ar") {
|
||
MathXYArrowInset * p = new MathXYArrowInset;
|
||
|
||
// try to read target
|
||
char c = getChar();
|
||
if (c == '[') {
|
||
parse_into(p->cell(0), FLAG_BRACK_END, mathmode);
|
||
//lyxerr << "read target: " << p->cell(0) << "\n";
|
||
} else {
|
||
putback();
|
||
}
|
||
|
||
// try to read label
|
||
if (nextToken().cat() == catSuper || nextToken().cat() == catSub) {
|
||
p->up_ = nextToken().cat() == catSuper;
|
||
getToken();
|
||
parse_into(p->cell(1), FLAG_ITEM, mathmode);
|
||
//lyxerr << "read label: " << p->cell(1) << "\n";
|
||
}
|
||
|
||
cell->push_back(MathAtom(p));
|
||
//lyxerr << "read cell: " << cell << "\n";
|
||
}
|
||
#endif
|
||
|
||
else if (t.cs().size()) {
|
||
latexkeys const * l = in_word_set(t.cs());
|
||
if (l) {
|
||
if (l->inset == "font") {
|
||
lyxerr << "starting font " << t.cs() << "\n";
|
||
MathAtom p = createMathInset(t.cs());
|
||
bool textmode = (t.cs()[0] == 't');
|
||
parse_into(p->cell(0), FLAG_ITEM, !textmode);
|
||
cell->push_back(p);
|
||
//lyxerr << "ending font\n";
|
||
}
|
||
|
||
else if (l->inset == "oldfont") {
|
||
cell->push_back(createMathInset(t.cs()));
|
||
parse_into(cell->back()->cell(0), flags, l->extra == "mathmode");
|
||
return;
|
||
}
|
||
|
||
else if (l->inset == "box") {
|
||
// switch to text mode
|
||
cell->push_back(createMathInset(t.cs()));
|
||
parse_into(cell->back()->cell(0), FLAG_ITEM, mathmode);
|
||
}
|
||
|
||
else if (l->inset == "style") {
|
||
cell->push_back(createMathInset(t.cs()));
|
||
parse_into(cell->back()->cell(0), flags, mathmode);
|
||
return;
|
||
}
|
||
|
||
else {
|
||
MathAtom p = createMathInset(t.cs());
|
||
for (MathInset::idx_type i = 0; i < p->nargs(); ++i)
|
||
parse_into(p->cell(i), FLAG_ITEM, l->extra == "mathmode");
|
||
cell->push_back(p);
|
||
}
|
||
}
|
||
|
||
else {
|
||
MathAtom p = createMathInset(t.cs());
|
||
for (MathInset::idx_type i = 0; i < p->nargs(); ++i)
|
||
parse_into(p->cell(i), FLAG_ITEM, mathmode);
|
||
cell->push_back(p);
|
||
}
|
||
}
|
||
|
||
|
||
if (flags & FLAG_LEAVE) {
|
||
flags &= ~FLAG_LEAVE;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
} // anonymous namespace
|
||
|
||
|
||
void mathed_parse_cell(MathArray & ar, string const & str)
|
||
{
|
||
istringstream is(str.c_str());
|
||
mathed_parse_cell(ar, is);
|
||
}
|
||
|
||
|
||
void mathed_parse_cell(MathArray & ar, istream & is)
|
||
{
|
||
Parser(is).parse_into(ar, 0, true);
|
||
}
|
||
|
||
|
||
|
||
bool mathed_parse_macro(string & name, string const & str)
|
||
{
|
||
istringstream is(str.c_str());
|
||
Parser parser(is);
|
||
return parser.parse_macro(name);
|
||
}
|
||
|
||
bool mathed_parse_macro(string & name, istream & is)
|
||
{
|
||
Parser parser(is);
|
||
return parser.parse_macro(name);
|
||
}
|
||
|
||
bool mathed_parse_macro(string & name, LyXLex & lex)
|
||
{
|
||
Parser parser(lex);
|
||
return parser.parse_macro(name);
|
||
}
|
||
|
||
|
||
|
||
bool mathed_parse_normal(MathAtom & t, string const & str)
|
||
{
|
||
istringstream is(str.c_str());
|
||
Parser parser(is);
|
||
return parser.parse_normal(t);
|
||
}
|
||
|
||
bool mathed_parse_normal(MathAtom & t, istream & is)
|
||
{
|
||
Parser parser(is);
|
||
return parser.parse_normal(t);
|
||
}
|
||
|
||
bool mathed_parse_normal(MathAtom & t, LyXLex & lex)
|
||
{
|
||
Parser parser(lex);
|
||
return parser.parse_normal(t);
|
||
}
|