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Tweak SyntaxForm

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edited Dec 4, 2017 at 22:38

131.7k
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I think you're looking for SyntaxForm. For example:

foo /: MakeBoxes[foo[x,y], StandardForm] := TemplateBox[
    {MakeBoxes[x], MakeBoxes[y]},
    "foo",
    DisplayFunction->(RowBox[{#1, "\[CenterDot]", #2}]&),
    SyntaxForm->"\[Star]">Star
]

I used Star for the SyntaxForm since its precedence is 390, as requested, in between the precedences for Plus and Times:

Precedence /@ {Plus, Star, Times}

{310., 390., 400.}

Then:

a + foo[x, y]
a * foo[x, y]

I think you're looking for SyntaxForm. For example:

foo /: MakeBoxes[foo[x,y], StandardForm] := TemplateBox[
    {MakeBoxes[x], MakeBoxes[y]},
    "foo",
    DisplayFunction->(RowBox[{#1, "\[CenterDot]", #2}]&),
    SyntaxForm->"\[Star]"
]

I used Star for the SyntaxForm since its precedence is 390, as requested, in between the precedences for Plus and Times:

Precedence /@ {Plus, Star, Times}

{310., 390., 400.}

Then:

a + foo[x, y]
a * foo[x, y]

I think you're looking for SyntaxForm. For example:

foo /: MakeBoxes[foo[x,y], StandardForm] := TemplateBox[
    {MakeBoxes[x], MakeBoxes[y]},
    "foo",
    DisplayFunction->(RowBox[{#1, "\[CenterDot]", #2}]&),
    SyntaxForm->Star
]

I used Star for the SyntaxForm since its precedence is 390, as requested, in between the precedences for Plus and Times:

Precedence /@ {Plus, Star, Times}

{310., 390., 400.}

Then:

a + foo[x, y]
a * foo[x, y]

Source Link

created Dec 4, 2017 at 22:21

Carl Woll

131.7k
6
246
359

I think you're looking for SyntaxForm. For example:

foo /: MakeBoxes[foo[x,y], StandardForm] := TemplateBox[
    {MakeBoxes[x], MakeBoxes[y]},
    "foo",
    DisplayFunction->(RowBox[{#1, "\[CenterDot]", #2}]&),
    SyntaxForm->"\[Star]"
]

I used Star for the SyntaxForm since its precedence is 390, as requested, in between the precedences for Plus and Times:

Precedence /@ {Plus, Star, Times}

{310., 390., 400.}

Then:

a + foo[x, y]
a * foo[x, y]