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declare function: Strip spaces around each function arg #1124

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declare function: Strip spaces around each function arg #1124

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5983e00
fix(pgfmath): Strip spaces around each function arg #1123
muzimuzhi Jan 10, 2022
190342a
refactor(pgfexpl): Initial macros
muzimuzhi Jan 10, 2022
1e9cf84
test: Add test
muzimuzhi Jan 10, 2022
169908a
test: add braces [ci skip]
muzimuzhi Jan 10, 2022
79d0ec3
test: update test file (`.tlg`)
muzimuzhi Jan 10, 2022
bc836b4
fix: Use wrapped `\pgfutil@unexpanded` and `\pgfutil@expanded`
muzimuzhi Jan 11, 2022
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4 changes: 3 additions & 1 deletion doc/generic/pgf/CHANGELOG.md
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Expand Up @@ -57,7 +57,9 @@ lot of contributed changes. Thanks to everyone who volunteered their time!
- Update Debian installation instructions
- Suppress white space at line end when `datavisualization` reads from a file
#1112
- Form-only patterns have no specified color #1122
- Form-only patterns have no specified color #1122
- Functions defined by `/pgf/declare function` now allow spaces in their arg
list #1123

### Changed

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33 changes: 33 additions & 0 deletions testfiles/pgfmath-gh1123.lvt
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@@ -0,0 +1,33 @@
\documentclass{minimal}
\input{pgf-regression-test}

\RequirePackage{pgfmath}

\makeatletter
\csname protected\endcsname\long\def\ASSERTPGFMATHFUNCTIONS#1#2{%
\pgfexpl@tl@if@eq@@ccTF{pgfmath#1@}{pgfmath#2@}{%
\TYPE{PASSED}%
\TYPE{\pgfexpl@cs@meaning@@c{pgfmath#1@}}%
}{%
\TYPE{FAILED}%
\TYPE{\pgfexpl@cs@meaning@@c{pgfmath#1@}}%
\TYPE{\pgfexpl@cs@meaning@@c{pgfmath#2@}}%
}%
}
\makeatother

\START

\BEGINTEST{/pgf/declare function, space(s) in arg list}
\pgfkeys{
/pgf/declare function={
funcA( \x,\y) = sqrt((\x)^2 + (\y)^2);
funcB( \x, \y) = sqrt((\x)^2 + (\y)^2);
funcX(\x,\y) = sqrt((\x)^2 + (\y)^2);
}
}
\ASSERTPGFMATHFUNCTIONS{funcA}{funcX}
\ASSERTPGFMATHFUNCTIONS{funcB}{funcX}
\ENDTEST

\END
10 changes: 10 additions & 0 deletions testfiles/pgfmath-gh1123.tlg
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@@ -0,0 +1,10 @@
This is a generated file for the l3build validation system.
Don't change this file in any respect.
============================================================
TEST 1: /pgf/declare function, space(s) in arg list
============================================================
PASSED
macro:#1#2->\pgfmathparse {sqrt((#1)^2+(#2)^2)}
PASSED
macro:#1#2->\pgfmathparse {sqrt((#1)^2+(#2)^2)}
============================================================
12 changes: 9 additions & 3 deletions tex/generic/pgf/math/pgfmathfunctions.code.tex
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Expand Up @@ -184,7 +184,7 @@
\expandafter\pgfmath@toks\expandafter=\expandafter{\pgfmath@local@body}%
\else%
\pgfmath@toks={}%
\expandafter\pgfmath@local@function@@body\pgfmath@local@args,,%
\expandafter\pgfmath@local@function@@body@trimspaces\pgfmath@local@args,,%
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\exp_last_unbraced:No fits this case, but it won't obviously increase the readability.

\fi%
\xdef\pgfmath@local@temp{%
\noexpand\pgfmathnotifynewdeclarefunction{\pgfmath@local@name}{\the\c@pgf@counta}%
Expand All @@ -202,7 +202,13 @@
\pgfmathdeclarefunction{#1}{#2}{\pgfmathparse{#3}}%
}%

\def\pgfmath@local@function@@body#1,{%
\def\pgfmath@local@function@@body@trimspaces#1,{%
% strip spaces on both sides of #1 in case it starts with a space,
% e.g., #1 is ` \y` which comes from `func(\x, \y)=...;`
\pgfexpl@exp@args@@Ne\pgfmath@local@function@@body{\pgfutil@trimspaces@noexp{#1}}%
}

\def\pgfmath@local@function@@body#1{%
\def\pgfmath@local@test{#1}%
\ifx\pgfmath@local@test\pgfutil@empty%
\let\pgfmath@local@next=\relax%
Expand All @@ -215,7 +221,7 @@
\pgfmath@toks={}%
\expandafter\pgfmath@local@function@@@body\pgfmath@local@body @%
\edef\pgfmath@local@body{\the\pgfmath@toks}%
\let\pgfmath@local@next=\pgfmath@local@function@@body%
\let\pgfmath@local@next=\pgfmath@local@function@@body@trimspaces%
\fi%
\pgfmath@local@next%
}
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80 changes: 80 additions & 0 deletions tex/generic/pgf/utilities/pgfutil-common.tex
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Expand Up @@ -49,6 +49,15 @@
\def\pgfutil@trimspaces@@#1Q#2{#1}
\catcode`\Q=11

% \pgfutil@trimspaces@noexp{<token list>}
%
% Variant of \pgfutil@trimspaces that after full expansion leaves stripped
% original text unexpanded in the input stream. Same as \trim@spaces@noexp
% in trimspaces.sty
\def\pgfutil@trimspaces@noexp#1{%
\pgfutil@unexpanded\expandafter\expandafter\expandafter{\pgfutil@trimspaces{#1}}%
}

% \pgfutil@ifx{<token 1>}{<token 2>}{<true code>}{<false code>}
%
% This macro is expandable.
Expand Down Expand Up @@ -909,6 +918,77 @@
\pgfmath@smuggleone#1%
\endgroup
}%

%
% Utility commands that are drop-in replacements for expl3 macros
%
% Naming conventions:
% pgf_cs = "pgfexpl@" + expl3_cs.replace("_", "@").replace(":", "@@")
% For example,
% expl3_cs: \exp_args:Ne, \tl_put_right:Nn
% pgf_cs: \pgfexpl@exp@args@@Ne, \pgfexpl@tl@put@right@@Nn


%
% l3basics package
%

% \cs_meaning:c
\long\def\pgfexpl@cs@meaning@@c#1{%
\ifcsname #1\endcsname
\expandafter\pgfutil@firstoftwo
\else
\expandafter\pgfutil@secondoftwo
\fi
{\pgfexpl@exp@args@@Nc\meaning{#1}}
{\detokenize{undefined}}%
}

%
% l3tl package
%

% \tl_if_eq:NNTF
\long\def\pgfexpl@tl@if@eq@@NNTF#1#2{%
\ifx#1#2\pgfexpl@@@prg@TF@true@@w\fi\pgfutil@secondoftwo
}

% \tl_if_eq:ccTF
\long\def\pgfexpl@tl@if@eq@@ccTF{%
\pgfexpl@exp@args@@Ncc\pgfexpl@tl@if@eq@@NNTF
}

% \__prg_TF_true:w
\long\def\pgfexpl@@@prg@TF@true@@w\fi\pgfutil@secondoftwo{%
\fi\pgfutil@firstoftwo
}

%
% l3expan package
%

% \exp_args:Nc
\long\def\pgfexpl@exp@args@@Nc#1#2{%
\expandafter#1\csname #2\endcsname
}

% \exp_args:No
\long\def\pgfexpl@exp@args@@No#1#2{%
\expandafter#1\expandafter{#2}%
}

% \exp_args:Ne
\long\def\pgfexpl@exp@args@@Ne#1#2{%
\expandafter#1\pgfutil@expanded{{#2}}%
}

% \exp_args:Ncc
\long\def\pgfexpl@exp@args@@Ncc#1#2#3{%
\expandafter#1\csname #2\expandafter\endcsname\csname #3\endcsname
}

% End of pgfexpl staff

\input pgfutil-common-lists.tex

\endinput
3 changes: 2 additions & 1 deletion tex/generic/pgf/utilities/pgfutil-context.def
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Expand Up @@ -365,9 +365,10 @@

\def\pgfutil@translate#1{#1} % \translate works very different in ConTeXt

% e-TeX primitives
% e-TeX primitives and beyond

\let\pgfutil@protected\normalprotected
\let\pgfutil@unexpanded\normalunexpanded
\let\pgfutil@expanded\normalexpanded

\endinput
3 changes: 2 additions & 1 deletion tex/generic/pgf/utilities/pgfutil-latex.def
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Expand Up @@ -209,9 +209,10 @@
\def\pgfutil@translate#1{\translate{#1}}
\fi

% e-TeX primitives
% e-TeX primitives and beyond

\let\pgfutil@protected\protected
\let\pgfutil@unexpanded\unexpanded
\let\pgfutil@expanded\expanded

\endinput
3 changes: 2 additions & 1 deletion tex/generic/pgf/utilities/pgfutil-plain.def
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Expand Up @@ -335,9 +335,10 @@

\def\pgfutil@translate#1{#1} % is there a translator package for plain?

% e-TeX primitives
% e-TeX primitives and beyond

\let\pgfutil@protected\protected
\let\pgfutil@unexpanded\unexpanded
\let\pgfutil@expanded\expanded

\endinput