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Single entry `display(info, target, parts)` over an ordered parts array, the frozen contract the generated typst driver calls. Per-kind dispatch for segment/example/lemma/sop; student/teacher matrix derived internally from `target` (student hides example solution + lemma proof; teacher shows all). Content-field values are consumed as already-evaluated content (driver `include`s them ⇒ module body, ADR-0006), never imported/stringified. Optional fields (lemma proof, example source) handled gracefully; unknown kind/target degrade without crashing. Zero @preview deps (CI-robust); CJK + math styled. Smoke compiles to non-empty student/teacher PDFs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
39 lines
1.1 KiB
Typst
39 lines
1.1 KiB
Typst
// example: a worked example / problem.
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//
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// Contract fields:
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// content: `problem` (required), `solution` (required)
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// scalar: `source` (optional string)
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//
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// Numbered "例题 N" via the shared example-counter.
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// student: show `problem`, HIDE `solution`.
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// teacher: show both.
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// `source`, when present, is shown as a small annotation on the problem line.
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#import "../fonts.typ"
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#import "common.typ": element-box, tag-line, divider, example-counter, hue-of
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#let display-example(part, show-solution: true) = {
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let theme = oklch(70%, 0.08, hue-of.example * 1deg)
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example-counter.step()
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element-box(hue-of.example, {
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// Problem
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tag-line(context [例题 #example-counter.display()])
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let source = part.at("source", default: none)
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if source != none and source != "" {
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text(size: 0.85em, fill: gray.darken(30%))[（来源：#source）]
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h(0.3em)
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}
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set text(font: fonts.accent)
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part.problem
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// Solution (teacher-only by default)
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if show-solution {
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divider(theme)
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tag-line[解析]
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set text(font: fonts.accent)
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part.solution
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}
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})
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}
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