Multiplatform "assert"

It's missing on K/JS, which we currently don't use, but just to ensure we *can*...
ephemient · Dec 23, 2022 · 9fc638f · 9fc638f
1 parent 1c2ce4d
commit 9fc638f
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Showing 4 changed files with 21 additions and 1 deletion.
diff --git a/kt/src/commonMain/kotlin/com/github/ephemient/aoc2022/Day21.kt b/kt/src/commonMain/kotlin/com/github/ephemient/aoc2022/Day21.kt
@@ -74,7 +74,7 @@ class Day21(lines: List<String>) {
     private data class Rational(val numerator: Long, val denominator: Long = 1) {
         init {
             require(denominator > 0)
-            assert(gcd(numerator, denominator) == 1L)
+            assert { gcd(numerator, denominator) == 1L }
         }
 
         operator fun plus(other: Rational): Rational {

diff --git a/kt/src/commonMain/kotlin/com/github/ephemient/aoc2022/Main.kt b/kt/src/commonMain/kotlin/com/github/ephemient/aoc2022/Main.kt
@@ -2,4 +2,8 @@ package com.github.ephemient.aoc2022
 
 expect fun getInput(day: Int): List<String>
 
+expect fun assert(condition: () -> Boolean)
+
+expect fun assert(condition: () -> Boolean, lazyMessage: () -> Any)
+
 expect fun trace(message: String)
diff --git a/kt/src/jvmMain/kotlin/com/github/ephemient/aoc2022/Main.kt b/kt/src/jvmMain/kotlin/com/github/ephemient/aoc2022/Main.kt
@@ -19,6 +19,14 @@ private val trace by lazy(LazyThreadSafetyMode.NONE) {
     System.getenv("TRACE")?.startsWith('0') != true
 }
 
+actual inline fun assert(condition: () -> Boolean) {
+    assert(condition())
+}
+
+actual inline fun assert(condition: () -> Boolean, lazyMessage: () -> Any) {
+    assert(condition(), lazyMessage)
+}
+
 actual fun trace(message: String) {
     if (trace) System.err.println(message)
 }
diff --git a/kt/src/nativeMain/kotlin/com/github/ephemient/aoc2022/Main.kt b/kt/src/nativeMain/kotlin/com/github/ephemient/aoc2022/Main.kt
@@ -50,6 +50,14 @@ actual fun getInput(day: Int): List<String> {
     }
 }
 
+actual inline fun assert(condition: () -> Boolean) {
+    assert(condition())
+}
+
+actual inline fun assert(condition: () -> Boolean, lazyMessage: () -> Any) {
+    assert(condition(), lazyMessage)
+}
+
 actual fun trace(message: String) {
     if (getenv("TRACE")?.get(0) != '0'.code.toByte()) fputs("$message\n", stderr)
 }