Java 21 string template tests (#335)

build.gradle

@@ -143,7 +143,7 @@ def testJavaRuntimes = [:]
         languageVersion = JavaLanguageVersion.of(runtimeVersion)
     }
 }
-[16, 17, 19].forEach { version -> createJavaTestDataSet(version, "Preview", ["--enable-preview"]) }
+[16, 17, 19, 21].forEach { version -> createJavaTestDataSet(version, "Preview", ["--enable-preview"]) }
 [8, 16].forEach { version -> createJavaTestDataSet(version, "NoDebug", ["-g:none"])}
 
 task compileTestDataJasm(type: JasmCompile) {

test/org/jetbrains/java/decompiler/SingleClassesTest.java

@@ -689,6 +689,10 @@ private void registerDefault() {
     register(JAVA_8, "TestTrySplit");
     register(JAVA_8, "TestWhileForeach");
     register(JAVA_21, "TestRecordPatterns1");
+    register(JAVA_21_PREVIEW, "TestStrProcessor");
+    register(JAVA_21_PREVIEW, "TestRawProcessor");
+    register(JAVA_21_PREVIEW, "TestFmtProcessor");
+    register(JAVA_21_PREVIEW, "TestCustomProcessor");
   }
 
   private void registerEntireClassPath() {

testData/results/pkg/TestCustomProcessor.dec

@@ -0,0 +1,56 @@
+package pkg;
+
+import java.lang.StringTemplate.Processor;
+import java.lang.runtime.TemplateRuntime;
+
+public class TestCustomProcessor {
+   static Processor<Object, Error> processor;
+
+   public void test() {
+      String s = "Hello";// 7
+      int i = 42;// 8
+      double d = 3.14159;// 9
+      Object result = processor.process(TemplateRuntime.newStringTemplate<"process","Text: "," "," ","">(s, i, d));// 11
+   }// 12
+}
+
+class 'pkg/TestCustomProcessor' {
+   method 'test ()V' {
+      0      9
+      1      9
+      2      9
+      3      10
+      4      10
+      5      10
+      6      11
+      7      11
+      8      11
+      9      11
+      a      12
+      b      12
+      c      12
+      d      12
+      e      12
+      f      12
+      10      12
+      11      12
+      12      12
+      13      12
+      14      12
+      15      12
+      16      12
+      17      12
+      18      12
+      19      12
+      1a      12
+      1b      12
+      1c      13
+   }
+}
+
+Lines mapping:
+7 <-> 10
+8 <-> 11
+9 <-> 12
+11 <-> 13
+12 <-> 14

testData/results/pkg/TestRawProcessor.dec

@@ -0,0 +1,43 @@
+package pkg;
+
+import java.lang.runtime.TemplateRuntime;
+
+public class TestRawProcessor {
+   public void test() {
+      String s = "Hello";// 7
+      int i = 42;// 8
+      Object o = null;// 9
+      StringTemplate template = TemplateRuntime.newStringTemplate<"process","Text: "," "," ","">(s, i, o);// 11
+   }// 12
+}
+
+class 'pkg/TestRawProcessor' {
+   method 'test ()V' {
+      0      6
+      1      6
+      2      6
+      3      7
+      4      7
+      5      7
+      6      8
+      7      8
+      8      9
+      9      9
+      a      9
+      b      9
+      c      9
+      d      9
+      e      9
+      f      9
+      10      9
+      11      9
+      12      10
+   }
+}
+
+Lines mapping:
+7 <-> 7
+8 <-> 8
+9 <-> 9
+11 <-> 10
+12 <-> 11

testData/results/pkg/TestStrProcessor.dec

@@ -0,0 +1,45 @@
+package pkg;
+
+public class TestStrProcessor {
+   public void test() {
+      String s = "Hello";// 5
+      int i = 42;// 6
+      Object o = null;// 7
+      System.out.println("Text: " + s + " " + i + " " + o);// 8
+   }// 9
+}
+
+class 'pkg/TestStrProcessor' {
+   method 'test ()V' {
+      0      4
+      1      4
+      2      4
+      3      5
+      4      5
+      5      5
+      6      6
+      7      6
+      8      7
+      9      7
+      a      7
+      b      7
+      c      7
+      d      7
+      11      7
+      12      7
+      13      7
+      14      7
+      15      7
+      16      7
+      17      7
+      18      7
+      19      8
+   }
+}
+
+Lines mapping:
+5 <-> 5
+6 <-> 6
+7 <-> 7
+8 <-> 8
+9 <-> 9

testData/src/java21preview/pkg/TestCustomProcessor.java

@@ -0,0 +1,13 @@
+package pkg;
+
+public class TestCustomProcessor {
+  static StringTemplate.Processor<Object, Error> processor;
+
+  public void test() {
+    String s = "Hello";
+    int i = 42;
+    double d = 3.14159;
+
+    Object result = processor."Text: \{s} \{i} \{d}";
+  }
+}

testData/src/java21preview/pkg/TestFmtProcessor.java

@@ -0,0 +1,13 @@
+package pkg;
+
+import static java.util.FormatProcessor.FMT;
+
+public class TestFmtProcessor {
+  public void test() {
+    String s = "Hello";
+    int i = 42;
+    double d = 3.14159;
+
+    System.out.println(FMT."Text: %s\{s} %4d\{i} %.2f\{d}");
+  }
+}

testData/src/java21preview/pkg/TestRawProcessor.java

@@ -0,0 +1,13 @@
+package pkg;
+
+import static java.lang.StringTemplate.RAW;
+
+public class TestRawProcessor {
+  public void test() {
+    String s = "Hello";
+    int i = 42;
+    Object o = null;
+
+    StringTemplate template = RAW."Text: \{s} \{i} \{o}";
+  }
+}

testData/src/java21preview/pkg/TestStrProcessor.java

@@ -0,0 +1,10 @@
+package pkg;
+
+public class TestStrProcessor {
+  public void test() {
+    String s = "Hello";
+    int i = 42;
+    Object o = null;
+    System.out.println(STR."Text: \{s} \{i} \{o}");
+  }
+}

testFixtures/org/jetbrains/java/decompiler/SingleClassesTestBase.java

@@ -286,6 +286,7 @@ public enum Version {
       JAVA_17_PREVIEW(17, "preview", "Preview"),
       JAVA_19_PREVIEW(19, "preview", "Preview"),
       JAVA_21(21),
+      JAVA_21_PREVIEW(21, "preview", "Preview"),
       GROOVY("groovy", "Groovy"),
       KOTLIN("kt", "Kotlin"),
       SCALA("scala", "Scala"),