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65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
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// -*- C++ -*-
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/**
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* \file MathClass.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Jean-Marc Lasgouttes
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef MATH_CLASS_H
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#define MATH_CLASS_H
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#include "support/strfwd.h"
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namespace lyx {
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/* The TeXbook, p. 158:
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*
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* There are thirteen kinds of atoms, each of which might act
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* differently in a formula; for example, ‘(’ is an Open atom because
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* it comes from an opening. Here is a complete list of the different
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* kinds:
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* + Ord: an ordinary atom like ‘x’
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* + Op: a large operator atom like ‘\sum’
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* + Bin: a binary operation atom like ‘+’
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* + Rel: a relation atom like ‘=’
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* + Open: an opening atom like ‘(’
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* + Close: a closing atom like ‘)’
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* + Punct: a punctuation atom like ‘,’
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* + Inner: an inner atom like ‘\frac{1}{2}’
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* + Over: an overline atom like ‘\overline{x}’
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* + Under: an underline atom like ‘\underline{x}’
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* + Acc: an accented atom like ‘\hat{x}’
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* + Rad: a radical atom like ‘\sqrt{2}’
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* + Vcent: a vbox to be centered, produced by \vcenter.
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*
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* Over, Under, Acc, Rad and Vcent are not considered in the enum
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* below. The relvant elements will be considered as Ord.
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*/
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enum MathClass {
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MC_ORD,
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MC_OP,
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MC_BIN,
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MC_REL,
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MC_OPEN,
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MC_CLOSE,
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MC_PUNCT,
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MC_INNER,
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MC_UNKNOWN
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};
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MathClass string_to_class(docstring const &);
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docstring const class_to_string(MathClass);
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} // namespace lyx
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#endif
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