chiark / gitweb /
doc/stdmeth.tex: A TikZ diagram of the standard method combination.
authorMark Wooding <mdw@distorted.org.uk>
Thu, 26 May 2016 08:26:09 +0000 (09:26 +0100)
committerMark Wooding <mdw@distorted.org.uk>
Fri, 8 Jun 2018 18:58:40 +0000 (19:58 +0100)
For safekeeping.  Remove the old (Lisp-specific) SVG version now that we
don't need it any more.

doc/standard-method-combination.svg [deleted file]
doc/stdmeth.tex [new file with mode: 0644]

diff --git a/doc/standard-method-combination.svg b/doc/standard-method-combination.svg
deleted file mode 100644 (file)
index f2ca2f3..0000000
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diff --git a/doc/stdmeth.tex b/doc/stdmeth.tex
new file mode 100644 (file)
index 0000000..03c3734
--- /dev/null
@@ -0,0 +1,96 @@
+%%% -*- mode: latex; TeX-PDF-mode: t -*-
+
+\documentclass{article}
+\usepackage[palatino, helvetica, courier, maths=cmr]{mdwfonts}
+
+\usepackage{syntax}
+\usepackage{tikz}
+\usetikzlibrary{calc}
+\usetikzlibrary{positioning}
+
+\errorcontextlines=999
+
+\begin{document}
+
+\begin{tikzpicture}
+  [>=stealth, thick,
+   order/.append style={color=green!70!black},
+   code/.append style={font=\sffamily},
+   action/.append style={font=\itshape},
+   method/.append style={rectangle, draw=black, thin, fill=blue!30,
+                         text height=\ht\strutbox, text depth=\dp\strutbox,
+                         minimum width=40mm}]
+
+  \def\delgstack#1#2#3{
+    \node (#10) [method, #2] {#3};
+    \node (#11) [method, above=6mm of #10] {#3};
+    \draw [->] ($(#10.north)!.5!(#10.north west) + (0mm, 1mm)$) --
+               ++(0mm, 4mm)
+      node [code, left=4pt, midway] {next_method};
+    \draw [<-] ($(#10.north)!.5!(#10.north east) + (0mm, 1mm)$) --
+               ++(0mm, 4mm)
+      node [action, right=4pt, midway] {return};
+    \draw [->] ($(#11.north)!.5!(#11.north west) + (0mm, 1mm)$) --
+               ++(0mm, 4mm)
+      node [code, left=4pt, midway] {next_method}
+      node (ld) [above] {$\smash\vdots\mathstrut$};
+    \draw [<-] ($(#11.north)!.5!(#11.north east) + (0mm, 1mm)$) --
+               ++(0mm, 4mm)
+      node [action, right=4pt, midway] {return}
+      node (rd) [above] {$\smash\vdots\mathstrut$};
+    \draw [->] ($(ld.north) + (0mm, 1mm)$) -- ++(0mm, 4mm)
+      node [code, left=4pt, midway] {next_method};
+    \draw [<-] ($(rd.north) + (0mm, 1mm)$) -- ++(0mm, 4mm)
+      node [action, right=4pt, midway] {return};
+    \node (p) at ($(ld.north)!.5!(rd.north)$) {};
+    \node (#1n) [method, above=5mm of p] {#3};
+    \draw [->, order] ($(#10.south east) + (4mm, 1mm)$) --
+                        ($(#1n.north east) + (4mm, -1mm)$)
+      node [midway, right, align=left] {Most to \\ least \\ specific};}
+
+  \delgstack{a}{}{Around method}
+  \draw [<-] ($(a0.south)!.5!(a0.south west) - (0mm, 1mm)$) --
+             ++(0mm, -4mm);
+  \draw [->] ($(a0.south)!.5!(a0.south east) - (0mm, 1mm)$) --
+             ++(0mm, -4mm)
+    node [action, right=4pt, midway] {return};
+
+  \draw [->] ($(an.north)!.6!(an.north west) + (0mm, 1mm)$) --
+             ++(-8mm, 8mm)
+    node [code, midway, left=3mm] {next_method}
+    node (b0) [method, above left = 1mm + 4mm and -6mm - 4mm] {};
+  \node (b1) [method] at ($(b0) - (2mm, 2mm)$) {};
+  \node (bn) [method] at ($(b1) - (2mm, 2mm)$) {Before method};
+  \draw [->, order] ($(bn.west) - (6mm, 0mm)$) -- ++(12mm, 12mm)
+    node [midway, above left, align=center] {Most to \\ least \\ specific};
+  \draw [->] ($(b0.north east) + (-10mm, 1mm)$) -- ++(8mm, 8mm)
+    node (p) {};
+
+  \delgstack{m}{above right=1mm and 0mm of an.west |- p}{Primary method}
+  \draw [->] ($(mn.north)!.5!(mn.north west) + (0mm, 1mm)$) -- ++(0mm, 4mm)
+    node [code, left=4pt, midway] {next_method}
+    node [above right = 0mm and -8mm]
+    {$\vcenter{\hbox{\Huge\textcolor{red}{!}}}
+      \vcenter{\hbox{\begin{tabular}[c]{l}
+                       \textsf{next_method} \\
+                       pointer is null
+                     \end{tabular}}}$};
+
+  \draw [->, color=blue, dotted]
+      ($(m0.south)!.2!(m0.south east) - (0mm, 1mm)$) --
+      ($(an.north)!.2!(an.north east) + (0mm, 1mm)$)
+    node [midway, sloped, below] {Return value};
+
+  \draw [<-] ($(an.north)!.6!(an.north east) + (0mm, 1mm)$) --
+             ++(8mm, 8mm)
+    node [action, midway, right=3mm] {return}
+    node (f0) [method, above right = 1mm and -6mm] {};
+  \node (f1) [method] at ($(f0) + (-2mm, 2mm)$) {};
+  \node (fn) [method] at ($(f1) + (-2mm, 2mm)$) {After method};
+  \draw [<-, order] ($(f0.east) + (6mm, 0mm)$) -- ++(-12mm, 12mm)
+    node [midway, above right, align=center] {Least to \\ most \\ specific};
+  \draw [<-] ($(fn.north west) + (6mm, 1mm)$) -- ++(-8mm, 8mm);
+
+\end{tikzpicture}
+
+\end{document}