package com.ruoyi.buss.common.dynamic;
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import javax.tools.*;
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import java.net.URI;
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import java.util.List;
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public class DynamicCompiler {
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private final JavaCompiler compiler;
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private final StandardJavaFileManager stdFileManager;
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public DynamicCompiler() {
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this.compiler = ToolProvider.getSystemJavaCompiler();
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this.stdFileManager = compiler.getStandardFileManager(null, null, null);
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}
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public Class<?> compile(String className, String sourceCode) throws Exception {
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MemoryJavaFileManager fileManager = new MemoryJavaFileManager(stdFileManager);
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JavaFileObject javaFile = new StringJavaFileObject(className, sourceCode);
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List<String> options = List.of("--enable-preview", "--add-modules=jdk.compiler");
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compiler.getTask(null, fileManager, null, options, null, List.of(javaFile)).call();
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return fileManager.getClassLoader().loadClass(className);
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}
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private static class StringJavaFileObject extends SimpleJavaFileObject {
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private final String code;
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protected StringJavaFileObject(String name, String code) {
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super(URI.create("string:///" + name.replace('.','/') + Kind.SOURCE.extension), Kind.SOURCE);
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this.code = code;
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}
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@Override
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public CharSequence getCharContent(boolean ignoreEncodingErrors) {
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return code;
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}
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}
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}
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