mirror of
https://github.com/typst/typst
synced 2025-05-15 01:25:28 +08:00
56 lines
1.2 KiB
Typst
56 lines
1.2 KiB
Typst
// Tests for field introspection.
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---
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// Verify that non-inherent fields are hidden if not set.
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#show figure: it => [
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`repr(it)`: #repr(it) \
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`it.has("gap"): `#repr(it.has("gap")) \
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]
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#figure[]
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#figure([], gap: 1pt)
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---
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// Integrated test for content fields.
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#let compute(equation, ..vars) = {
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let vars = vars.named()
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let f(elem) = {
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let func = elem.func()
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if func == text {
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let text = elem.text
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if regex("^\d+$") in text {
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int(text)
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} else if text in vars {
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int(vars.at(text))
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} else {
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panic("unknown math variable: " + text)
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}
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} else if func == math.attach {
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let value = f(elem.base)
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if elem.has("t") {
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value = calc.pow(value, f(elem.t))
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}
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value
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} else if elem.has("children") {
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elem
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.children
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.filter(v => v != [ ])
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.split[+]
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.map(xs => xs.fold(1, (prod, v) => prod * f(v)))
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.fold(0, (sum, v) => sum + v)
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}
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}
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let result = f(equation.body)
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[With ]
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vars
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.pairs()
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.map(p => $#p.first() = #p.last()$)
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.join(", ", last: " and ")
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[ we have:]
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$ equation = result $
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}
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#compute($x y + y^2$, x: 2, y: 3)
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