Align array and scalar semantics with gawk

README.md

@@ -13,7 +13,7 @@ Jawk is a pure Java implementation of [AWK](https://en.wikipedia.org/wiki/AWK).
 Jawk fully implements POSIX AWK, and adds support for the most commonly used gawk-specific features:
 
 - Builtins, available by default through the built-in GNU Awk compatibility extension: `asort()`, `asorti()`, `typeof()`, `isarray()`, `mkbool()`, `gensub()`, `patsplit()`, `strtonum()`, `systime()`, `mktime()`, `strftime()`, `bindtextdomain()`, `dcgettext()`, `dcngettext()`, and `PROCINFO["sorted_in"]`-controlled array traversal
-- Arrays of arrays (`a[i][j]`) and typed regexp literals (`@/re/`)
+- Arrays of arrays (`a[i][j]`), including gawk-compatible runtime typing when arrays, scalars, and subarrays are passed to functions, and typed regexp literals (`@/re/`)
 - Source inclusion with `@include`, namespaces with `@namespace` and `ns::name`, and indirect function calls such as `@functionName(args)`
 - `BEGINFILE` / `ENDFILE` special patterns, with the `ERRNO` and `ARGIND` special variables, so a script can hook into the command-line file processing loop and skip unreadable files without a fatal error
 - The `nextfile` statement

src/it/java/io/jawk/gawk/AbstractGawkSuite.java

@@ -23,12 +23,15 @@
  */
 
 import static org.junit.Assume.assumeTrue;
+import static org.junit.Assert.assertTrue;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import io.jawk.AwkTestSupport;
 import io.jawk.CompatibilityTestResources;
+import io.jawk.jrt.AwkRuntimeException;
 
 /**
  * Shared helpers for the explicit gawk compatibility integration suites
@@ -55,6 +58,21 @@ protected static String gawkText(String fileName) throws IOException {
 		return new String(Files.readAllBytes(gawkPath(fileName)), StandardCharsets.UTF_8);
 	}
 
+	protected static void assertGawkRuntimeFailure(String testName) throws Exception {
+		AwkTestSupport.TestResult result = AwkTestSupport
+				.awkTest("GAWK " + testName)
+				.script(gawkText(testName + ".awk"))
+				.expectThrow(AwkRuntimeException.class)
+				.run();
+		result.assertExpected();
+
+		String expectedTranscript = gawkText(testName + ".ok");
+		String expectedMessage = expectedTranscript.contains(" as an array") ?
+				"scalar as an array" : "array in a scalar context";
+		String actualMessage = result.thrownException().getMessage();
+		assertTrue(actualMessage, actualMessage.contains(expectedMessage));
+	}
+
 	protected static void skip(String reason) {
 		assumeTrue(reason, false);
 	}

src/it/java/io/jawk/gawk/GawkExtensionIT.java

@@ -50,7 +50,7 @@ public void test_aadelete1() throws Exception {
 
 	@Test
 	public void test_aadelete2() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aadelete2");
 	}
 
 	@Test
@@ -848,7 +848,7 @@ public void test_mdim5() throws Exception {
 
 	@Test
 	public void test_mdim6() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("mdim6");
 	}
 
 	@Test

src/it/java/io/jawk/gawk/GawkIT.java

@@ -98,7 +98,7 @@ public void test_arrayind3() throws Exception {
 
 	@Test
 	public void test_arrayparm() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("arrayparm");
 	}
 
 	@Test
@@ -153,17 +153,17 @@ public void test_arryref2() throws Exception {
 
 	@Test
 	public void test_arryref3() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("arryref3");
 	}
 
 	@Test
 	public void test_arryref4() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("arryref4");
 	}
 
 	@Test
 	public void test_arryref5() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("arryref5");
 	}
 
 	@Test
@@ -178,37 +178,37 @@ public void test_arynasty() throws Exception {
 
 	@Test
 	public void test_aryprm1() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aryprm1");
 	}
 
 	@Test
 	public void test_aryprm2() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aryprm2");
 	}
 
 	@Test
 	public void test_aryprm3() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aryprm3");
 	}
 
 	@Test
 	public void test_aryprm4() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aryprm4");
 	}
 
 	@Test
 	public void test_aryprm5() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aryprm5");
 	}
 
 	@Test
 	public void test_aryprm6() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aryprm6");
 	}
 
 	@Test
 	public void test_aryprm7() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("aryprm7");
 	}
 
 	@Test
@@ -651,7 +651,7 @@ public void test_fnarray2() throws Exception {
 
 	@Test
 	public void test_fnaryscl() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("fnaryscl");
 	}
 
 	@Test
@@ -1530,7 +1530,7 @@ public void test_printfchar() throws Exception {
 
 	@Test
 	public void test_prmarscl() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("prmarscl");
 	}
 
 	@Test
@@ -1845,17 +1845,17 @@ public void test_rswhite() throws Exception {
 
 	@Test
 	public void test_scalar() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("scalar");
 	}
 
 	@Test
 	public void test_sclforin() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("sclforin");
 	}
 
 	@Test
 	public void test_sclifin() throws Exception {
-		skip(NON_ZERO_TRANSCRIPT_REASON);
+		assertGawkRuntimeFailure("sclifin");
 	}
 
 	@Test