lyx_mirror/development/mathmacros/testcases_basic.lyx

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#LyX 1.6svn created this file. For more info see http://www.lyx.org/
\lyxformat 317
\begin_document
\begin_header
\textclass article
\language english
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\author ""
\author ""
\end_header
\begin_body
\begin_layout Title
Macro Testcases
\end_layout
\begin_layout Enumerate
Simple macro definitions with position awareness:
\begin_inset FormulaMacro
\newcommand{\bla}{42}
\end_inset
\begin_inset Formula \[
\bla\mbox{ should look like }42\]
\end_inset
now redined as
\begin_inset FormulaMacro
\renewcommand{\bla}{21}
\end_inset
, such that
\begin_inset Formula \[
\bla\mbox{ should look like }21.\]
\end_inset
\end_layout
\begin_layout Enumerate
Redefinitions of macros appearing in the definition of another macro:
\begin_inset FormulaMacro
\newcommand{\fooa}{x}
\end_inset
\begin_inset FormulaMacro
\newcommand{\foob}[1]{(#1\fooa)}
\end_inset
\begin_inset FormulaMacro
\renewcommand{\fooa}{y}
\end_inset
with the TeX code
\begin_inset listings
inline false
status open
\begin_layout PlainLayout
\backslash
newcommand{
\backslash
fooa}{x}
\end_layout
\begin_layout PlainLayout
\backslash
newcommand{
\backslash
foob}[1]{(#1
\backslash
fooa)}
\end_layout
\begin_layout PlainLayout
\backslash
renewcommand{
\backslash
fooa}{y}
\end_layout
\end_inset
gives the following:
\begin_inset Formula \[
\foob{\fooa}\mbox{ should look like }(yy)\]
\end_inset
\end_layout
\begin_layout Enumerate
Arity change:
\begin_inset FormulaMacro
\newcommand{\foo}{-}
\end_inset
\begin_inset FormulaMacro
\renewcommand{\foo}[2]{(#1,#2)}
\end_inset
\begin_inset Formula \[
\foo{abc}d\mbox{ should look like }(abc,d)\mbox{ if the second foo is there, otherwise like }-{abc}d\]
\end_inset
\end_layout
\begin_layout Enumerate
Arity change with incomplete arguments at line end:
\begin_inset FormulaMacro
\renewcommand{\foo}{-}
\end_inset
\begin_inset FormulaMacro
\renewcommand{\foo}[2]{(#1,#2)}
\end_inset
\begin_inset Formula \[
\frac{\foo{abc}{}}{1}\mbox{ should be }\frac{(abc,\,)}{1}\mbox{ if the second foo is defined. Otherwise }\frac{-{abc}{}}{1}\]
\end_inset
\end_layout
\begin_layout Enumerate
Recursion:
\begin_inset FormulaMacro
\renewcommand{\foo}[1]{\foo #1{}}
\end_inset
.
The inner foo should not we resolved as TeX would give a infinite recursion.
\end_layout
\begin_layout Enumerate
Recursive usage:
\begin_inset FormulaMacro
\renewcommand{\foo}[3]{\frac{{\displaystyle #1}\,{\displaystyle #2}}{{\displaystyle #3}}}
\end_inset
can be used to create tree-like structures like this one:
\begin_inset Formula \[
\foo{\foo{42}{\foo{asdf}{asdf}{asdf}}{21}}{\foo{asdf}{asdf}{asdf}}{asdf}.\]
\end_inset
\end_layout
\begin_layout Enumerate
Folding/Unfolding:
\begin_inset FormulaMacro
\renewcommand{\foo}[2]{<#1|#2>}
\end_inset
.
Start using Ctrl-+ and Ctrl-- when you are inside of the macro to fold
and unfold, e.g.
here:
\begin_inset Formula \[
\foo{\foo{42}{12}}{\foo{21}4}.\]
\end_inset
\end_layout
\begin_layout Enumerate
Scripts:
\begin_inset FormulaMacro
\renewcommand{\foo}[3][A][B]{(#1,#2)#3}
\end_inset
\begin_inset Formula \[
\foo[a]{}^{4}[b]c_{1}\mbox{ should look like }(a,B)\sqcup^{4}[b]c_{1}\]
\end_inset
\begin_inset Formula \[
\foo[a]c^{3}\mbox{ should look like }(a,B)c^{3}\]
\end_inset
\end_layout
\begin_layout Enumerate
Multiple optional parameters:
\begin_inset FormulaMacro
\renewcommand{\foo}[3][a][b][c]{(#1,#2,#3)}
\end_inset
\end_layout
\begin_deeper
\begin_layout Enumerate
\begin_inset Formula $\foo[][B]123\mbox{ should be }(a,B,c)123$
\end_inset
\end_layout
\begin_layout Enumerate
\begin_inset Formula $\foo[][][C]123\mbox{ should be }(a,b,C)123$
\end_inset
\end_layout
\end_deeper
\end_body
\end_document