What is meant by "! Package tikz Error: Giving up on this path. Did you forget a semicolon?." when I use pgf-umlcd?

Question

My code is

\documentclass{standalone}
\usepackage{pgf-umlcd}

\renewcommand{\unidirectionalAssociation}[4]
{
  draw[umlcd style, ->] (#1) -- (#4)
  node[near end, auto]{#2}
  node[near end, auto,swap]{#3};
}

\begin{document}
\begin{tikzpicture}

  \begin{abstractclass}[text width = 6cm]{FileStore}{0,0}
    \attribute{$\sim$ com.alhelal.textpad}
    \operation{+ orderFile(file : File) : EditableFile} 
    \operation[0]{\# createFile(file : File) : EditableFile}
  \end{abstractclass}

  \begin{class}[text width = 6cm,anchor = west,xshift = 5cm]{ProgrammFileFactory}{FileStore.east}
    \inherit{FileStore}
    \attribute{$\sim$ com.alhelal.textpad}
    \operation{+ orderFile(file : File) : EditableFile} 
  \end{class}

  \begin{class}[text width = 11cm, yshift = -2cm]{EditableFile}{ProgrammFileFactory.south}
    \attribute{$\sim$ com.alhelal.textpad}
    \attribute{+ languageBehavior : LanguageBehavior} 
    \operation{+ options : Options} 
    \operation{+ getCodeAreaFromTab(tb : Tab) : CodeArea} 
    \operation{+ saveFile(fileTabArrayList : ArrayList$<$FileTab$>$, option : Options)}
    \operation{+ printFile(node : Node)}
    \operation{+ toggleLineNumber(cd : CodeArea)}
    \operation{+ setLanguageBehavior(langBehavior : LanguageBehavior)}
    \operation{+ performRunCode(file : File)}
    \operation{+ performBuildCode(file : File)}
    \operation{+ performSetHighlightableText()}
    \operation{+ performSetAutocompletableText()}
  \end{class}

  \begin{class}[text width = 3.5cm,anchor=north east,yshift = -2cm, xshift=-6cm]{TextFile}{EditableFile.south west}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width = 3.5cm,anchor=north east,yshift = -2cm, xshift = -1.5cm]{CFile}{EditableFile.south west}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
    \attribute{-path : String}
  \end{class}

  \begin{class}[text width=3.5cm,anchor=north west,yshift = -2cm,xshift=-3cm]{CplusFile}{EditableFile.south}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width  = 3.5cm, anchor = north west, yshift = -2cm, xshift = -4cm]{JavaFile}{EditableFile.south east}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width = 3.5cm,yshift = -2cm,xshift = 1cm]{PythonFile}{EditableFile.south east}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width = 3.5cm, anchor = north west, yshift =-2cm,xshift = 5cm]{LaTeXFile}{EditableFile.south east}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}
  \unidirectionalAssociation{ProgrammFileFactory}{}{$<<$instantiate$>>$}{EditableFile}
  \node [above=3mm] at (current bounding box.north) {Factory Method Pattern}
\end{tikzpicture}
\end{document}

I run this using pdflatex in terminal that results in

This is actually one of those cases where the error message is completely accurate: As Skillmon says you forgot a semicolon at the end of the last \node you added. — Torbjørn T., Oct 28 '17 at 10:35
Since you have some responses below that seem to answer your question, please consider marking one of them as ‘Accepted’ by clicking on the tickmark below their vote count (see How do you accept an answer?). This shows which answer helped you most, and it assigns reputation points to the author of the answer (and to you!). It's part of this site's idea to identify good questions and answers through upvotes and acceptance of answers. — samcarter_is_at_topanswers.xyz, Jul 23 '18 at 17:28
Note that if you get a message about a missing semicolon for the command on line X, you are probably missing the semicolon at the end of the previous command - on line X-1. — einpoklum, Feb 11 '24 at 08:17

Skillmon · Answer 1 · 2017-10-28T14:00:41.313

The general syntax of TikZ is to enter the stuff you want to be drawn in a format matching something like:

\command [ options ] ( location ) { stuff } ;

Where almost everything might not be needed. Just the \command (e.g. \draw) and the trailing ; to limit the scope of the command, are important. You forgot that ; in the last line of your tikzpicture and therefore get this error. And you forgot a \ at beginning of draw in the \unidirectionAssociation renaming block.
Use \draw[umlcd style, ->] (#1) -- (#4) instead of draw[umlcd style, ->] (#1) -- (#4)

The following compiles:

\documentclass{standalone}
\usepackage{pgf-umlcd}

\renewcommand{\unidirectionalAssociation}[4]
{
  \draw[umlcd style, ->] (#1) -- (#4)% <------
  node[near end, auto]{#2}
  node[near end, auto,swap]{#3};
}

\begin{document}
\begin{tikzpicture}

  \begin{abstractclass}[text width = 6cm]{FileStore}{0,0}
    \attribute{$\sim$ com.alhelal.textpad}
    \operation{+ orderFile(file : File) : EditableFile} 
    \operation[0]{\# createFile(file : File) : EditableFile}
  \end{abstractclass}

  \begin{class}[text width = 6cm,anchor = west,xshift = 5cm]{ProgrammFileFactory}{FileStore.east}
    \inherit{FileStore}
    \attribute{$\sim$ com.alhelal.textpad}
    \operation{+ orderFile(file : File) : EditableFile} 
  \end{class}

  \begin{class}[text width = 11cm, yshift = -2cm]{EditableFile}{ProgrammFileFactory.south}
    \attribute{$\sim$ com.alhelal.textpad}
    \attribute{+ languageBehavior : LanguageBehavior} 
    \operation{+ options : Options} 
    \operation{+ getCodeAreaFromTab(tb : Tab) : CodeArea} 
    \operation{+ saveFile(fileTabArrayList : ArrayList$<$FileTab$>$, option : Options)}
    \operation{+ printFile(node : Node)}
    \operation{+ toggleLineNumber(cd : CodeArea)}
    \operation{+ setLanguageBehavior(langBehavior : LanguageBehavior)}
    \operation{+ performRunCode(file : File)}
    \operation{+ performBuildCode(file : File)}
    \operation{+ performSetHighlightableText()}
    \operation{+ performSetAutocompletableText()}
  \end{class}

  \begin{class}[text width = 3.5cm,anchor=north east,yshift = -2cm, xshift=-6cm]{TextFile}{EditableFile.south west}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width = 3.5cm,anchor=north east,yshift = -2cm, xshift = -1.5cm]{CFile}{EditableFile.south west}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
    \attribute{-path : String}
  \end{class}

  \begin{class}[text width=3.5cm,anchor=north west,yshift = -2cm,xshift=-3cm]{CplusFile}{EditableFile.south}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width  = 3.5cm, anchor = north west, yshift = -2cm, xshift = -4cm]{JavaFile}{EditableFile.south east}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width = 3.5cm,yshift = -2cm,xshift = 1cm]{PythonFile}{EditableFile.south east}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}

  \begin{class}[text width = 3.5cm, anchor = north west, yshift =-2cm,xshift = 5cm]{LaTeXFile}{EditableFile.south east}
    \inherit{EditableFile}
    \attribute{$\sim$ com.alhelal.textpad}
  \end{class}
  \unidirectionalAssociation{ProgrammFileFactory}{}{$<<$instantiate$>>$}{EditableFile}
  \node [above=3mm] at (current bounding box.north) {Factory Method Pattern};% <-------
\end{tikzpicture}
\end{document}

I marked the lines I changed with % <-------.

EDIT: I've updated the above code to include the correct redefinition of \unidirectionalAssociation thanks to the clarifications provided by @TorbjørnT.

I put \ which included in my question. Your solution doesn't results any error message, but I don't get the proper output. association not shown. see this and why no.2 and no.4 inherited line arrow is less deep. see tihs — alhelal, Oct 28 '17 at 08:34
@alhelal did you apply the proposed changes (the last code block in my answer) to \unidirectionalAssociation? With this the two described issues are solved. — Skillmon, Oct 28 '17 at 08:49
@alhelal why do you change the definition of \unidirectionalAssociation in the first place? — Skillmon, Oct 28 '17 at 08:59
The macro redefinition was suggested by me (https://tex.stackexchange.com/a/389248/) because the original one doesn't work for vertical lines. And your last version is the one I suggested, somehow the OP lost a \ along the way. Edit: I'd suggest changing the one in the complete example to the same, instead of adding those semicolons. — Torbjørn T., Oct 28 '17 at 10:27
@TorbjørnT. thanks for the clarification, I'll edit my answer. — Skillmon, Oct 28 '17 at 11:33
@Skillmon I spend long time to find out the missing \, that makes my output ambiguous, so I edit your answer with this information. — alhelal, Oct 28 '17 at 13:59

What is meant by "! Package tikz Error: Giving up on this path. Did you forget a semicolon?." when I use pgf-umlcd?

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