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feat(jans-auth-server): added JIT compiler support under jvm 17 (#5954)
#5837 Signed-off-by: YuriyZ <yzabrovarniy@gmail.com>
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10 changes: 10 additions & 0 deletions
10
jans-core/script/src/main/java/io/jans/service/custom/script/jit/DiscardableClassLoader.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| package io.jans.service.custom.script.jit; | ||
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| public class DiscardableClassLoader { | ||
| public static <T> Class<? extends T> classFromBytes(final Class<T> baseClass, final String name, final byte[] bytecode) { | ||
| return new ClassLoader(baseClass.getClassLoader()) { | ||
| Class<? extends T> c = defineClass(name, bytecode, 0, bytecode.length).asSubclass(baseClass); | ||
| }.c; | ||
| } | ||
| } |
136 changes: 136 additions & 0 deletions
136
jans-core/script/src/main/java/io/jans/service/custom/script/jit/IndentedPrintWriter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| package io.jans.service.custom.script.jit; | ||
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| import java.io.IOException; | ||
| import java.io.PrintWriter; | ||
| import java.io.Writer; | ||
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| public class IndentedPrintWriter extends PrintWriter { | ||
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| /** | ||
| * Creates a new IndentedPrintWriter, without automatic line flushing. | ||
| * | ||
| * @param out A character-output stream | ||
| */ | ||
| public IndentedPrintWriter(Writer out) { | ||
| super(new IndentedWriter(out)); | ||
| } | ||
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| /** | ||
| * Creates a new IndentedPrintWriter. | ||
| * | ||
| * @param out A character-output stream | ||
| * @param autoFlush A boolean; if true, the <tt>println</tt>, | ||
| * <tt>printf</tt>, or <tt>format</tt> methods will | ||
| * flush the output buffer | ||
| */ | ||
| public IndentedPrintWriter(Writer out, boolean autoFlush) { | ||
| super(new IndentedWriter(out), autoFlush); | ||
| } | ||
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| /** | ||
| * Increases the indentation level | ||
| */ | ||
| public void indent() { | ||
| ((IndentedWriter) out).indent(); | ||
| } | ||
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| /** | ||
| * Decreases the indentation level | ||
| */ | ||
| public void dedent() { | ||
| ((IndentedWriter) out).dedent(); | ||
| } | ||
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| /** | ||
| * A writer that supports indentation of the output | ||
| */ | ||
| @SuppressWarnings("WeakerAccess") | ||
| private static class IndentedWriter extends Writer { | ||
| /** | ||
| * Characters used for one indentation level | ||
| */ | ||
| private static final char[] INDENT = "\t".toCharArray(); | ||
| /** | ||
| * The underlying {@link Writer} | ||
| */ | ||
| private final Writer out; | ||
| /** | ||
| * Indentation level | ||
| */ | ||
| private int level; | ||
| /** | ||
| * true if must indent the next char | ||
| */ | ||
| private boolean mustIndent; | ||
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| /** | ||
| * Constructor based on a {@link Writer} | ||
| */ | ||
| public IndentedWriter(Writer out) { | ||
| this.out = out; | ||
| } | ||
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| /** | ||
| * Increases the indentation level | ||
| */ | ||
| public void indent() { | ||
| ++level; | ||
| } | ||
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| /** | ||
| * Decreases the indentation level | ||
| */ | ||
| public void dedent() { | ||
| --level; | ||
| } | ||
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| @Override | ||
| public void write(char[] cbuf, int off, int len) throws IOException { | ||
| int last = off; | ||
| for (int i = off; i < off + len; i++) { | ||
| if (mustIndent) { | ||
| mustIndent = false; | ||
| // Do not indent empty lines | ||
| if (cbuf[i] != '\n') | ||
| writeIndent(); | ||
| } | ||
| if (cbuf[i] == '\n') { | ||
| mustIndent = true; | ||
| out.write(cbuf, last, i - last + 1); | ||
| last = i + 1; | ||
| } | ||
| } | ||
| final int remaining = off + len - last; | ||
| if (remaining > 0) | ||
| out.write(cbuf, last, remaining); | ||
| } | ||
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| private void writeIndent() throws IOException { | ||
| for (int i = 0; i < level; i++) { | ||
| out.write(INDENT); | ||
| } | ||
| } | ||
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| @Override | ||
| public void flush() throws IOException { | ||
| out.flush(); | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| out.close(); | ||
| } | ||
| } | ||
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| /** | ||
| * Wraps the given writer in a indenting one if it isn't one already. | ||
| * Otherwise, returns the same one (casted). | ||
| */ | ||
| public static IndentedPrintWriter of(PrintWriter writer) { | ||
| if (writer instanceof IndentedPrintWriter) | ||
| return (IndentedPrintWriter) writer; | ||
| else | ||
| return new IndentedPrintWriter(writer); | ||
| } | ||
| } |
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