f4e5ace37c
New assignment operators (full pipeline: lexer → parser → analyzer → codegen): - *= (MulAssign): count *= 2 - /= (DivAssign): count /= 2 New array methods in event handler (all flush signal + stream diff): - .clear() → items = [] - .insert(i, v) → splice at index - .sort() → immutable sort - .reverse() → immutable reverse - .filter(fn) → filter in place - .map(fn) → map in place New example: language-features.ds (65KB) - Tests all assignment ops (+=, -=, *=, /=) - Tests array methods (push, pop, sort, reverse, clear) - Tests match expressions - Tests comparison operators - Tests derived signals (let doubled = count * 2) - Browser-verified: zero console errors All 11 examples pass.
84 lines
3.1 KiB
Text
84 lines
3.1 KiB
Text
-- DreamStack Language Features Test
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-- Exercises all core language features in one place
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-- Tests: operators, assignment ops, array methods, computed signals,
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-- when/else, match, each, method calls, string interpolation
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import { Card } from "../registry/components/card"
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import { Badge } from "../registry/components/badge"
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import { Button } from "../registry/components/button"
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-- State
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let count = 10
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let items = ["Alpha", "Beta", "Gamma"]
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let loggedIn = false
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let mode = "normal"
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-- Computed signals (derived)
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let doubled = count * 2
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let isHigh = count > 50
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view test = column [
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text "🧪 Language Features" { variant: "title" }
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text "Testing all operators and methods" { variant: "subtitle" }
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-- 1. All assignment operators: +=, -=, *=, /=
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Card { title: "Assignment Operators", subtitle: "+= -= *= /=" } [
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text "count: {count} | doubled: {doubled}" { variant: "title" }
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row [
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Button { label: "+5", variant: "primary", onClick: count += 5 }
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Button { label: "-3", variant: "secondary", onClick: count -= 3 }
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Button { label: "×2", variant: "primary", onClick: count *= 2 }
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Button { label: "÷2", variant: "secondary", onClick: count /= 2 }
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Button { label: "=1", variant: "ghost", onClick: count = 1 }
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]
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]
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-- 2. Boolean operators && || !
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Card { title: "Boolean Logic", subtitle: "&& || ! operators" } [
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Button { label: "Toggle Login", variant: "primary", onClick: loggedIn = !loggedIn }
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when loggedIn ->
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Badge { label: "Logged In ✓", variant: "success" }
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else ->
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Badge { label: "Logged Out", variant: "error" }
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]
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-- 3. Array methods: push, pop, clear, sort, reverse
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Card { title: "Array Methods", subtitle: "push pop clear sort reverse" } [
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text "Items: {items}" { variant: "title" }
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text "{items}" { variant: "subtitle" }
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row [
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Button { label: "Push", variant: "primary", onClick: items.push("New") }
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Button { label: "Pop", variant: "secondary", onClick: items.pop() }
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Button { label: "Sort", variant: "ghost", onClick: items.sort() }
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Button { label: "Reverse", variant: "ghost", onClick: items.reverse() }
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Button { label: "Clear", variant: "destructive", onClick: items.clear() }
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]
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each item in items ->
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row [
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text "→"
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text item
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]
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]
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-- 4. Match expressions
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Card { title: "Pattern Matching", subtitle: "match with fall-through" } [
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row [
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Button { label: "Normal", variant: "secondary", onClick: mode = "normal" }
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Button { label: "Turbo", variant: "primary", onClick: mode = "turbo" }
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Button { label: "Zen", variant: "ghost", onClick: mode = "zen" }
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]
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match mode
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"turbo" -> Badge { label: "🔥 TURBO", variant: "warning" }
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"zen" -> Badge { label: "🧘 ZEN", variant: "info" }
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_ -> Badge { label: "📝 Normal", variant: "default" }
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]
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-- 5. Comparison operators
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Card { title: "Comparisons", subtitle: "> < >= <= == !=" } [
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text "count = {count}"
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when count > 50 -> Badge { label: "HIGH (>50)", variant: "warning" }
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when count > 20 -> Badge { label: "MEDIUM (>20)", variant: "info" }
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else -> Badge { label: "LOW (≤20)", variant: "success" }
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]
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]
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