import javax.tools.*;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
public class Validator {
    private final JavaCompiler COMPILER = ToolProvider.getSystemJavaCompiler();
    public final boolean compiles(Set<File> srcFiles, SourceVersion version) throws IOException {
        List<JavaFileObject> compilationUnits = new ArrayList<>();
        for (File file : srcFiles) {
            CompilableFile compilableFile = new CompilableFile(file.getName(), Files.readString(file.toPath()));
            compilationUnits.add(compilableFile);
        }
        DiagnosticCollector<JavaFileObject> diagnosticCollector = new DiagnosticCollector<>();
        JavaCompiler.CompilationTask task = COMPILER.getTask(null, null, diagnosticCollector, null, null, compilationUnits);
        task.setProcessors(List.of(new SourceVersionProcessor(version))); // Set the SourceVersionProcessor
        boolean success = task.call();
        diagnosticCollector.getDiagnostics().forEach(Validator::printDiagnostic);
        return success;
    }
    private static void printDiagnostic(Diagnostic<?> diagnostic) {
        System.out.println(diagnostic.getCode());
        System.out.println(diagnostic.getKind());
        System.out.println(diagnostic.getPosition());
        System.out.println(diagnostic.getStartPosition());
        System.out.println(diagnostic.getEndPosition());
        System.out.println(diagnostic.getSource());
        System.out.println(diagnostic.getMessage(null));
    }
    private static final class CompilableFile extends SimpleJavaFileObject {
        final String code;
        CompilableFile(String name, String code) {
            super(URI.create("string:///" + name.replace('.', '/') + Kind.SOURCE.extension), Kind.SOURCE);
            this.code = code;
        }
        @Override
        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
            return code;
        }
    }
    // SourceVersionProcessor to support a specific source version
    private static final class SourceVersionProcessor implements Processor {
        private final SourceVersion version;
        SourceVersionProcessor(SourceVersion version) {
            this.version = version;
        }
        @Override
        public Set<String> getSupportedOptions() {
            return Set.of();
        }
        @Override
        public Set<String> getSupportedAnnotationTypes() {
            return Set.of();
        }
        @Override
        public SourceVersion getSupportedSourceVersion() {
            return version;
        }
        @Override
        public void init(ProcessingEnvironment processingEnv) {
        }
        @Override
        public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
            return false;
        }
    }
}

import javax.tools.*;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
public class Validator {
    private final JavaCompiler COMPILER = ToolProvider.getSystemJavaCompiler();
    
    // 假设 srcFiles 是可以读取的 Java 文件
    public final boolean compiles(Set<File> srcFiles, String javaVersion) throws IOException {
        // 将文件转换为 JavaCompiler API 兼容的文件
        List<JavaFileObject> compilationUnits = new ArrayList<>();
        for (File file : srcFiles) {
            CompilableFile compilableFile = new CompilableFile(file.getName(), Files.readString(file.toPath()));
            compilationUnits.add(compilableFile);
        }
        DiagnosticCollector<JavaFileObject> diagnosticCollector = new DiagnosticCollector<>();
        JavaCompiler.CompilationTask task = COMPILER.getTask(null, null, diagnosticCollector, List.of("--release", javaVersion), null, compilationUnits);
        boolean success = task.call();
        // 显示每个警告、错误等的信息
        diagnosticCollector.getDiagnostics().forEach(Validator::printDiagnostic);
        return success;
    }
    private static void printDiagnostic(Diagnostic<?> diagnostic) {
        System.out.println(diagnostic.getCode());
        System.out.println(diagnostic.getKind());
        System.out.println(diagnostic.getPosition());
        System.out.println(diagnostic.getStartPosition());
        System.out.println(diagnostic.getEndPosition());
        System.out.println(diagnostic.getSource());
        System.out.println(diagnostic.getMessage(null));
    }
    /**
     * 此类的实例可以使用 JavaCompiler API 进行编译
     */
    private static final class CompilableFile extends SimpleJavaFileObject {
        final String code;
        CompilableFile(String name, String code) {
            super(URI.create("string:///" + name.replace('.', '/') + Kind.SOURCE.extension), Kind.SOURCE);
            this.code = code;
        }
        @Override
        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
            return code;
        }
    }
}