--- /dev/null
+import java.io.File;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+
+import static java.lang.StringTemplate.RAW;
+import static java.util.FormatProcessor.FMT;
+
+/**
+ * Examples taken from <a href="https://openjdk.org/jeps/430">JEP 430</a>
+ */
+public class StringPatternsPreview1 {
+ public static void main(String[] args) {
+ // Embedded expressions can be strings
+ String firstName = "Bill", lastName = "Duck";
+ // TODO: Due to https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1719, this is currently rendered incorrectly
+ System.out.println(STR."\{firstName} \{lastName}");
+
+ // Embedded expressions can perform arithmetic
+ int x = 10, y = 20;
+ System.out.println(STR."\{x} + \{y} = \{x + y}");
+
+ // Embedded expressions can invoke methods and access fields
+ System.out.println(STR."You have a \{getOfferType()} waiting for you!");
+ Request req = new Request();
+ System.out.println(STR."Access at \{req.date} \{req.time} from \{req.ipAddress}");
+
+ // Embedded expressions can use double quotes without escaping them
+ String filePath = "_dummy.dat";
+ File file = new File(filePath);
+ System.out.println(STR."The file \{filePath} \{file.exists() ? "does" : "does not"} exist");
+
+ // Embedded expressions can span multiple lines
+ System.out.println(
+ STR."The time is \{
+ DateTimeFormatter
+ .ofPattern("HH:mm:ss")
+ .format(LocalTime.of(11, 11, 11))
+ } or roughly eleven after eleven"
+ );
+
+ // Embedded expressions can be nested
+ String[] fruit = { "apples", "oranges", "peaches" };
+ System.out.println(STR."\{fruit[0]}, \{STR."\{fruit[1]}, \{fruit[2]}"}\n");
+
+ // Embedded expressions can be used in multi-line strings
+ String title = "My Web Page";
+ String text = "Hello, world";
+ String html = STR."""
+ <html>
+ <head>
+ <title>\{title}</title>
+ </head>
+ <body>
+ <p>\{text}</p>
+ </body>
+ </html>
+ """;
+ System.out.println(html);
+
+ // The FMT template processor interprets format specifiers which appear to the left of embedded expressions.
+ // The format specifiers are the same as those defined in java.util.Formatter.
+ Rectangle[] zone = new Rectangle[] {
+ new Rectangle("Alfa", 17.8, 31.4),
+ new Rectangle("Bravo", 9.6, 12.4),
+ new Rectangle("Charlie", 7.1, 11.23),
+ };
+ String table = FMT."""
+ Description Width Height Area
+ %-12s\{zone[0].name} %7.2f\{zone[0].width} %7.2f\{zone[0].height} %7.2f\{zone[0].area()}
+ %-12s\{zone[1].name} %7.2f\{zone[1].width} %7.2f\{zone[1].height} %7.2f\{zone[1].area()}
+ %-12s\{zone[2].name} %7.2f\{zone[2].width} %7.2f\{zone[2].height} %7.2f\{zone[2].area()}
+ \{" ".repeat(28)} Total %7.2f\{zone[0].area() + zone[1].area() + zone[2].area()}
+ """;
+ System.out.println(table);
+
+ // Built-in security: Each template expression needs to pass through a processor.
+ String name = "Joan";
+ StringTemplate stringTemplate = RAW."My name is \{name}";
+ String processedTemplate = STR.process(stringTemplate);
+ System.out.println(processedTemplate);
+ }
+
+ static Object getOfferType() {
+ return "special New Year's sale discount";
+ }
+
+ static class Request {
+ LocalDate date;
+ LocalTime time;
+ InetAddress ipAddress;
+
+ Request() {
+ LocalDateTime dateTime = LocalDateTime.of(2011, 11, 11, 11, 11, 11);
+ date = dateTime.toLocalDate();
+ time = dateTime.toLocalTime();
+ try {
+ // localhost/127.0.0.1
+ ipAddress = InetAddress.getByAddress("localhost", new byte[] { 127, 0, 0, 1 });
+ } catch (UnknownHostException e) {
+ throw new RuntimeException(e);
+ }
+ }
+ }
+
+ record Rectangle(String name, double width, double height) {
+ double area() {
+ return width * height;
+ }
+ }
+}
--- /dev/null
+import java.io.File;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+
+import static java.lang.StringTemplate.RAW;
+import static java.util.FormatProcessor.FMT;
+
+/**
+ * Examples taken from <a href="https://openjdk.org/jeps/430">JEP 430</a>
+ */
+public aspect StringPatternsPreview1Aspect {
+ public static void main(String[] args) {}
+
+ before() : execution(* main(String[])) {
+ System.out.println(thisJoinPoint);
+
+ // Embedded expressions can be strings
+ String firstName = "Bill", lastName = "Duck";
+ // TODO: Due to https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1719, this is currently rendered incorrectly
+ System.out.println(STR."\{firstName} \{lastName}");
+
+ // Embedded expressions can perform arithmetic
+ int x = 10, y = 20;
+ System.out.println(STR."\{x} + \{y} = \{x + y}");
+
+ // Embedded expressions can invoke methods and access fields
+ System.out.println(STR."You have a \{getOfferType()} waiting for you!");
+ Request req = new Request();
+ System.out.println(STR."Access at \{req.date} \{req.time} from \{req.ipAddress}");
+
+ // Embedded expressions can use double quotes without escaping them
+ String filePath = "_dummy.dat";
+ File file = new File(filePath);
+ System.out.println(STR."The file \{filePath} \{file.exists() ? "does" : "does not"} exist");
+
+ // Embedded expressions can span multiple lines
+ System.out.println(
+ STR."The time is \{
+ DateTimeFormatter
+ .ofPattern("HH:mm:ss")
+ .format(LocalTime.of(11, 11, 11))
+ } or roughly eleven after eleven"
+ );
+
+ // Embedded expressions can be nested
+ String[] fruit = { "apples", "oranges", "peaches" };
+ System.out.println(STR."\{fruit[0]}, \{STR."\{fruit[1]}, \{fruit[2]}"}\n");
+
+ // Embedded expressions can be used in multi-line strings
+ String title = "My Web Page";
+ String text = "Hello, world";
+ String html = STR."""
+ <html>
+ <head>
+ <title>\{title}</title>
+ </head>
+ <body>
+ <p>\{text}</p>
+ </body>
+ </html>
+ """;
+ System.out.println(html);
+
+ // The FMT template processor interprets format specifiers which appear to the left of embedded expressions.
+ // The format specifiers are the same as those defined in java.util.Formatter.
+ Rectangle[] zone = new Rectangle[] {
+ new Rectangle("Alfa", 17.8, 31.4),
+ new Rectangle("Bravo", 9.6, 12.4),
+ new Rectangle("Charlie", 7.1, 11.23),
+ };
+ String table = FMT."""
+ Description Width Height Area
+ %-12s\{zone[0].name} %7.2f\{zone[0].width} %7.2f\{zone[0].height} %7.2f\{zone[0].area()}
+ %-12s\{zone[1].name} %7.2f\{zone[1].width} %7.2f\{zone[1].height} %7.2f\{zone[1].area()}
+ %-12s\{zone[2].name} %7.2f\{zone[2].width} %7.2f\{zone[2].height} %7.2f\{zone[2].area()}
+ \{" ".repeat(28)} Total %7.2f\{zone[0].area() + zone[1].area() + zone[2].area()}
+ """;
+ System.out.println(table);
+
+ // Built-in security: Each template expression needs to pass through a processor.
+ String name = "Joan";
+ StringTemplate stringTemplate = RAW."My name is \{name}";
+ String processedTemplate = STR.process(stringTemplate);
+ System.out.println(processedTemplate);
+ }
+
+ static Object getOfferType() {
+ return "special New Year's sale discount";
+ }
+
+ static class Request {
+ LocalDate date;
+ LocalTime time;
+ InetAddress ipAddress;
+
+ Request() {
+ LocalDateTime dateTime = LocalDateTime.of(2011, 11, 11, 11, 11, 11);
+ date = dateTime.toLocalDate();
+ time = dateTime.toLocalTime();
+ try {
+ // localhost/127.0.0.1
+ ipAddress = InetAddress.getByAddress("localhost", new byte[] { 127, 0, 0, 1 });
+ } catch (UnknownHostException e) {
+ throw new RuntimeException(e);
+ }
+ }
+ }
+
+ record Rectangle(String name, double width, double height) {
+ double area() {
+ return width * height;
+ }
+ }
+}
*/
public class Java21PreviewFeaturesTests extends XMLBasedAjcTestCaseForJava21Only {
- public void testDummyPreviewJava21() {
- //runTest("dummy preview Java 21");
+ public void testStringPatterns() {
+ runTest("string patterns");
+ }
+
+ public void testStringPatternsAspect() {
+ runTest("string patterns aspect");
}
public static Test suite() {
</run>
</ajc-test>
+ <!-- Java 21 preview -->
+ <ajc-test dir="features1921/java21" vm="21" title="string patterns">
+ <compile files="StringPatternsPreview1.java" options="--enable-preview -21"/>
+ <run class="StringPatternsPreview1" vmargs="--enable-preview">
+ <stdout ordered="yes">
+ <!-- TODO: Due to https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1719, this is currently rendered
+ incorrectly. After the upstream fix, change "\Bill \Duck" to "Bill Duck". -->
+ <line text="\Bill \Duck"/>
+ <line text="10 + 20 = 30"/>
+ <line text="You have a special New Year's sale discount waiting for you!"/>
+ <line text="Access at 2011-11-11 11:11:11 from localhost/127.0.0.1"/>
+ <line text="The file _dummy.dat does not exist"/>
+ <line text="The time is 11:11:11 or roughly eleven after eleven"/>
+ <line text="apples, oranges, peaches"/>
+ <line text=""/>
+ <line text="<html>"/>
+ <line text=" <head>"/>
+ <line text=" <title>My Web Page</title>"/>
+ <line text=" </head>"/>
+ <line text=" <body>"/>
+ <line text=" <p>Hello, world</p>"/>
+ <line text=" </body>"/>
+ <line text="</html>"/>
+ <line text=""/>
+ <line text="Description Width Height Area"/>
+ <line text="Alfa 17.80 31.40 558.92"/>
+ <line text="Bravo 9.60 12.40 119.04"/>
+ <line text="Charlie 7.10 11.23 79.73"/>
+ <line text=" Total 757.69"/>
+ <line text=""/>
+ <line text="My name is Joan"/>
+ </stdout>
+ </run>
+ </ajc-test>
+
+ <!-- Java 21 preview -->
+ <ajc-test dir="features1921/java21" vm="21" title="string patterns aspect">
+ <compile files="StringPatternsPreview1Aspect.aj" options="--enable-preview -21"/>
+ <run class="StringPatternsPreview1Aspect" vmargs="--enable-preview">
+ <stdout ordered="yes">
+ <line text="execution(void StringPatternsPreview1Aspect.main(String[]))"/>
+ <!-- TODO: Due to https://github.com/eclipse-jdt/eclipse.jdt.core/issues/1719, this is currently rendered
+ incorrectly. After the upstream fix, change "\Bill \Duck" to "Bill Duck". -->
+ <line text="\Bill \Duck"/>
+ <line text="10 + 20 = 30"/>
+ <line text="You have a special New Year's sale discount waiting for you!"/>
+ <line text="Access at 2011-11-11 11:11:11 from localhost/127.0.0.1"/>
+ <line text="The file _dummy.dat does not exist"/>
+ <line text="The time is 11:11:11 or roughly eleven after eleven"/>
+ <line text="apples, oranges, peaches"/>
+ <line text=""/>
+ <line text="<html>"/>
+ <line text=" <head>"/>
+ <line text=" <title>My Web Page</title>"/>
+ <line text=" </head>"/>
+ <line text=" <body>"/>
+ <line text=" <p>Hello, world</p>"/>
+ <line text=" </body>"/>
+ <line text="</html>"/>
+ <line text=""/>
+ <line text="Description Width Height Area"/>
+ <line text="Alfa 17.80 31.40 558.92"/>
+ <line text="Bravo 9.60 12.40 119.04"/>
+ <line text="Charlie 7.10 11.23 79.73"/>
+ <line text=" Total 757.69"/>
+ <line text=""/>
+ <line text="My name is Joan"/>
+ </stdout>
+ </run>
+ </ajc-test>
+
</suite>
projects / aspectj.git / commitdiff