mirror of
https://github.com/typst/typst
synced 2025-05-13 20:46:23 +08:00
42 lines
963 B
Typst
42 lines
963 B
Typst
// 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(node) = {
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let func = node.func()
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if func == text {
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let text = node.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(node.base)
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if node.has("top") {
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value = calc.pow(value, f(node.top))
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}
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value
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} else if node.has("children") {
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node
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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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