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\AfterGroup 魔法和窒息 tex/pgf

tag-icon • tag-icon tikz-pgf pgfkeys grouping
\AfterGroup 魔法和窒息 tex/pgf

在下面的代码中，该行\AfterGroup*（来自etextools包）导致pdfLatex编译器“阻塞”，即它只产生这个输出并且该过程永远卡住，消耗 13％ 的 CPU：

This is pdfTeX, Version 3.1415926-2.5-1.40.14 (MiKTeX 2.9)
entering extended mode
(C:/Users/arul/AppData/Local/Temp/TE_temp_preview5132.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, afrikaans, ancientgreek, ar
abic, armenian, assamese, basque, bengali, bokmal, bulgarian, catalan, coptic, 
croatian, czech, danish, dutch, esperanto, estonian, farsi, finnish, french, ga
lician, german, german-x-2013-05-26, greek, gujarati, hindi, hungarian, iceland
ic, indonesian, interlingua, irish, italian, kannada, kurmanji, latin, latvian,
 lithuanian, malayalam, marathi, mongolian, mongolianlmc, monogreek, ngerman, n
german-x-2013-05-26, nynorsk, oriya, panjabi, pinyin, polish, portuguese, roman
ian, russian, sanskrit, serbian, slovak, slovenian, spanish, swedish, swissgerm
an, tamil, telugu, turkish, turkmen, ukenglish, ukrainian, uppersorbian, usengl
ishmax, welsh, loaded.
(C:\Users\arul\AppData\Local\Temp\TE_temp_preview5132.aux)
ABD: EveryShipout initializing macros
("C:\Program Files (x86)\MiKTeX 2.9\tex\context\base\supp-pdf.mkii"
[Loading MPS to PDF converter (version 2006.09.02).]

对于代码，我希望能够通过它们的 id 全局访问对象的不同部分，但由于宏是在一个组内创建的（并且pgfkeys局限于当前组），所以我需要\pgfkeys在全局范围内执行命令，从而\AfterGroups*执行命令（或者我需要 2 \AfterGroups*，另一个来逃离newenvironment限制？）

\documentclass{article}%
\usepackage{tikz,amsmath,amssymb,bm,color,etextools}%
\usepackage[margin=0cm,nohead]{geometry}%
\usetikzlibrary{calc}%
%
\begin{document}%
\begin{tikzpicture}%
%
\def\addobjectpart#1#2#3{%
  \pgfkeys{/instance/#1/ref name/.initial={a}, /instance/#1/ref color/.initial={b}}%
  \pgfkeys{/instance/#1/ref name={#2}, /instance/#1/ref color={#3}}%
}%
%
\newenvironment{myobject}[1] {
  \newcommand*{\addpart}[1][]{\object[##1]};%
  \def\object[##1]##2;{%
    \begingroup%
      \def\objid{1}%
      \def\name{bla}%
      \def\objcolor{black!50}%
      \AfterGroup*{\addobjectpart{\expandonce{\objid}}{\expandonce{\name}}{\expandonce{\objcolor}}}% <! HELL BREAKS LOOSE
    \endgroup%
  };%
}{};%
\begin{myobject}[BLAH]%
  \addpart[]{text ehm};%
\end{myobject}%
\end{tikzpicture}%
\end{document}%

编辑：中止进程后完成日志文件：http://pastebin.com/BuwTt305

答案1

好的，这是最终有效的代码，关键部分是\noexpand内部内容objmacro：

\xdef\objmacro{\noexpand\addobject {\objname}{\objcolor}}
\aftergroup\objmacro

我的问题是，一开始我Pgf/Tikz对它所基于的底层技术一无所知。我认为 TeX 太棒了！用于排版计算机指令和伪代码的软件包很快就会登陆 CTAN。

ArmV8 指令

\begin{instruction}{85. LDR (register)}%
%
    \addpart[bits=5,register] {Rd};%    
    \addpart[bits=5,register] {Rn};%
    \addpart[bits=2] {0, 1};%
    \addpart[bits=1,opcode] {S};%
    \addpart[name=opc1,opcode,bits=3,name overlay=red!30] {option};%
    \addpart[bits=5,register] {Rm};%
    \addpart[bits=9] {1, 1, 0, 0, 0, 0, 1, 1, 1};%
    \addpart[name=size,bits=2,name overlay=orange!50] {x,1};%   
    %
    \newvariant[32-bit, node={size}, equals]{10};%
    %
    \newmnemonics[operand={<Wt>}, comma, open bracket, optional={<Xn|SP>}, comma, optional={<R>}, optional={<m>},
       open curly, variant={<extend>}, open curly, comma, inner variant={<amount>}, 
       close curly, close curly, close bracket]{LDR};
    %
    \newvariant[64-bit, node={size}, equals]{11};%
    %
    \newmnemonics[operand={<Xt>}, comma, open bracket, optional={<Xn|SP>}, comma, optional={<R>}, optional={<m>},
       open curly, variant={<extend>}, open curly, comma, inner variant={<amount>}, 
       close curly, close curly, close bracket]{LDR};
    %
%
\end{instruction}%

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