[macros] Define itemreq, itemexpr, itemstmt environments

Author: jensmaurer

source/macros.tex

@@ -553,6 +553,38 @@
 {
 }
 
+\newsavebox\itemreqbox
+
+\newenvironment{itemreq}[1]
+{%
+  \vspace{1ex}%
+  \savebox\itemreqbox{#1}%
+}
+{%
+  \usebox\itemreqbox\par%
+  \penalty 3000%
+}
+
+\newenvironment{itemexpr}
+{
+\begin{itemreq}{\quad is an expression with:}%
+\begingroup \CodeStyle%
+}
+{
+\endgroup%
+\end{itemreq}%
+}
+
+\newenvironment{itemstmt}
+{
+\begin{itemreq}{\quad is a statement with:}%
+\begingroup \CodeStyle%
+}
+{
+\endgroup%
+\end{itemreq}%
+}
+
 \newenvironment{itemdescr}
 {
  \begin{indented}[beginpenalty=3000, endpenalty=-300]}