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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
/*
* @test
* @bug 8004727 8005647
* @summary javac should generate method parameters correctly.
* @modules jdk.jdeps/com.sun.tools.javap
*/
import java.io.*;
import java.util.*;
public class MethodParameters {
static final String Foo_name = "Foo";
static final String Foo_contents =
("public class Foo {\n" +
" Foo() {}\n" +
" Foo(int i) {}\n" +
" void foo0() {}\n" +
" void foo2(int j, int k) {}\n" +
"}").replaceAll(" +", " ");
static final String Init0_expected =
(" Foo();\n" +
" descriptor: ()V\n" +
" flags: (0x0000)\n" +
" Code:\n" +
" stack=1, locals=1, args_size=1\n" +
" 0: aload_0\n" +
" 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" +
" 4: return\n" +
" LineNumberTable:\n" +
" line 2: 0").replaceAll(" +", " ");
static final String Init1_expected =
(" Foo(int);\n" +
" descriptor: (I)V\n" +
" flags: (0x0000)\n" +
" Code:\n" +
" stack=1, locals=2, args_size=2\n" +
" 0: aload_0\n" +
" 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" +
" 4: return\n" +
" LineNumberTable:\n" +
" line 3: 0\n" +
" MethodParameters:\n" +
" Name Flags\n" +
" i").replaceAll(" +", " ");
static final String foo0_expected =
(" void foo0();\n" +
" descriptor: ()V\n" +
" flags: (0x0000)\n" +
" Code:\n" +
" stack=0, locals=1, args_size=1\n" +
" 0: return\n" +
" LineNumberTable:\n" +
" line 4: 0").replaceAll(" +", " ");
static final String foo2_expected =
(" void foo2(int, int);\n" +
" descriptor: (II)V\n" +
" flags: (0x0000)\n" +
" Code:\n" +
" stack=0, locals=3, args_size=3\n" +
" 0: return\n" +
" LineNumberTable:\n" +
" line 5: 0\n" +
" MethodParameters:\n" +
" Name Flags\n" +
" j\n" +
" k").replaceAll(" +", " ");
static final File classesdir = new File("methodparameters");
static final String separator = System.getProperty("line.separator");
public static void main(String... args) throws Exception {
new MethodParameters().run();
}
void run() throws Exception {
classesdir.mkdir();
final File Foo_java =
writeFile(classesdir, Foo_name + ".java", Foo_contents);
compile("-parameters", "-d", classesdir.getPath(), Foo_java.getPath());
System.out.println("Run javap");
String output =
javap("-c", "-verbose", "-classpath",
classesdir.getPath(), Foo_name);
String normalized =
output.replaceAll(separator, "\n").replaceAll(" +", " ");
if (!normalized.contains(Init0_expected))
error("Bad output for zero-parameter constructor. Expected\n" +
Init0_expected + "\n" + "but got\n" + normalized);
if (!normalized.contains(Init1_expected))
error("Bad output for one-parameter constructor. Expected\n" +
Init1_expected + "\n" + "but got\n" + normalized);
if (!normalized.contains(foo0_expected))
error("Bad output for zero-parameter method. Expected\n" +
foo0_expected + "\n" + "but got\n" + normalized);
if (!normalized.contains(foo2_expected))
error("Bad output for two-parameter method Expected\n" +
foo2_expected + "\n" + "but got\n" + normalized);
if (0 != errors)
throw new Exception("MethodParameters test failed with " +
errors + " errors");
}
String javap(String... args) {
StringWriter sw = new StringWriter();
PrintWriter out = new PrintWriter(sw);
//sun.tools.javap.Main.entry(args);
int rc = com.sun.tools.javap.Main.run(args, out);
if (rc != 0)
throw new Error("javap failed. rc=" + rc);
out.close();
System.out.println(sw);
return sw.toString();
}
String compile(String... args) throws Exception {
System.err.println("compile: " + Arrays.asList(args));
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
int rc = com.sun.tools.javac.Main.compile(args, pw);
pw.close();
String out = sw.toString();
if (out.length() > 0)
System.err.println(out);
if (rc != 0)
error("compilation failed, rc=" + rc);
return out;
}
File writeFile(File dir, String path, String body) throws IOException {
File f = new File(dir, path);
f.getParentFile().mkdirs();
FileWriter out = new FileWriter(f);
out.write(body);
out.close();
return f;
}
void error(String msg) {
System.err.println("Error: " + msg);
errors++;
}
int errors;
}