mirror of
https://github.com/typst/typst
synced 2025-05-14 04:56:26 +08:00
64 lines
1.4 KiB
Typst
64 lines
1.4 KiB
Typst
// Tests content field access.
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---
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// Ensure that fields from set rules are materialized into the element before
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// a show rule runs.
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#set table(columns: (10pt, auto))
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#show table: it => it.columns
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#table[A][B][C][D]
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---
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// Test it again with a different element.
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#set heading(numbering: "(I)")
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#show heading: set text(size: 11pt, weight: "regular")
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#show heading: it => it.numbering
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= Heading
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---
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// Test it with query.
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#set raw(lang: "rust")
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#context query(<myraw>).first().lang
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`raw` <myraw>
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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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