Implement new assert semantics in back-end

Previously, assert was just a regular function and its argument used to be computed on each call (even if assertions are disabled on JVM). This change adds support for 3 new behaviours of assert: * always-enable (independently from -ea on JVM) * always-disable (independently from -ea JVM) * runtime/jvm (compile the calls like javac generates assert-operator) * legacy (leave current eager semantics) - this already existed Default behaviour is legacy for now. The behavior is changed based on -Xassertions flag. #KT-7540: Fixed
2018-04-28 22:15:29 +03:00
parent 3f5a2c6427
commit f568149863
44 changed files with 2685 additions and 33 deletions
@@ -0,0 +1,76 @@
+// IGNORE_BACKEND: JS
+// KOTLIN_CONFIGURATION_FLAGS: ASSERTIONS_MODE=legacy
+// WITH_RUNTIME
+// FULL_JDK
+
+import java.lang.reflect.Field
+import java.lang.reflect.Modifier
+
+fun setDesiredAssertionStatus(v: Boolean) {
+    @Suppress("INVISIBLE_REFERENCE")
+    val field = kotlin._Assertions.javaClass.getField("ENABLED")
+    val modifiers = Field::class.java.getDeclaredField("modifiers");
+    modifiers.isAccessible = true
+    modifiers.setInt(field, field.modifiers and Modifier.FINAL.inv())
+    field.set(null, v)
+}
+
+fun checkTrue(): Boolean {
+    var hit = false
+    val l = { hit = true; true }
+    assert(l())
+    return hit
+}
+
+fun checkTrueWithMessage(): Boolean {
+    var hit = false
+    val l = { hit = true; true }
+    assert(l()) { "BOOYA!" }
+    return hit
+}
+
+fun checkFalse(): Boolean {
+    var hit = false
+    val l = { hit = true; false }
+    assert(l())
+    return hit
+}
+
+fun checkFalseWithMessage(): Boolean {
+    var hit = false
+    val l = { hit = true; false }
+    assert(l()) { "BOOYA!" }
+    return hit
+}
+
+fun box(): String {
+    setDesiredAssertionStatus(false)
+    if (!checkTrue()) return "FAIL 0"
+    setDesiredAssertionStatus(true)
+    if (!checkTrue()) return "FAIL 1"
+
+    setDesiredAssertionStatus(false)
+    if (!checkTrueWithMessage()) return "FAIL 2"
+    setDesiredAssertionStatus(true)
+    if (!checkTrueWithMessage()) return "FAIL 3"
+
+    setDesiredAssertionStatus(false)
+    if (!checkFalse()) return "FAIL 4"
+    setDesiredAssertionStatus(true)
+    try {
+        checkFalse()
+        return "FAIL 5"
+    } catch (ignore: AssertionError) {
+    }
+
+    setDesiredAssertionStatus(false)
+    if (!checkFalseWithMessage()) return "FAIL 6"
+    setDesiredAssertionStatus(true)
+    try {
+        checkFalseWithMessage()
+        return "FAIL 7"
+    } catch (ignore: AssertionError) {
+    }
+
+    return "OK"
+}