记录java调用eclipse cdt 解析c++文件
环境:
jdk1.8
eclipse cdt 9.11.1
需求:
java 解析c++中的类,属性类型,属性名称,函数,函数参数,返回值。
注意点:
如果你是外网编码,移植依赖和代码到内网的时候
运行可能出现 class not found xxxx , 这个依赖其实是对的。
解决办法:
将内网的maven的setting.xml 与外网的仓库地址相同就能解决
具体需要一致内容地点:
<mirror>
<id>aliyunmaven</id>
<mirrorOf>*</mirrorOf>
<name>阿里云公共仓库</name>
<url>https://maven.aliyun.com/repository/public</url>
</mirror>
依赖:
1. cdt 下载
https://archive.eclipse.org/tools/cdt/releases/9.11/cdt-9.11.1/
2. pom添加依赖:
<dependencies> <!-- CDT 核心 --> <dependency> <groupId>org.eclipse.cdt</groupId> <artifactId>org.eclipse.cdt.core</artifactId> <version>9.11.1</version> <scope>system</scope> <systemPath>${project.basedir}/libs/org.eclipse.cdt.core_6.11.1.202006011430.jar</systemPath> </dependency> <!-- Eclipse runtime 必要依赖 --> <dependency> <groupId>org.eclipse.platform</groupId> <artifactId>org.eclipse.core.runtime</artifactId> <version>3.13.0</version> </dependency> <dependency> <groupId>org.eclipse.platform</groupId> <artifactId>org.eclipse.core.jobs</artifactId> <version>3.9.3</version> </dependency> <dependency> <groupId>org.eclipse.platform</groupId> <artifactId>org.eclipse.core.contenttype</artifactId> <version>3.6.0</version> </dependency> <dependency> <groupId>org.eclipse.platform</groupId> <artifactId>org.eclipse.equinox.common</artifactId> <version>3.9.0</version> </dependency> <!-- 日志服务 --> <dependency> <groupId>org.eclipse.platform</groupId> <artifactId>org.eclipse.equinox.supplement</artifactId> <version>1.8.0</version> </dependency> </dependencies>
解析代码:
package org.example;
import org.eclipse.cdt.core.dom.ast.*;
import org.eclipse.cdt.core.dom.ast.cpp.*;
import org.eclipse.cdt.core.dom.ast.gnu.cpp.GPPLanguage;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.core.parser.*;
import java.util.HashMap;
public class CDTParseExample {
public static void main(String[] args) throws Exception {
// 1. 指定要解析的头文件路径
String filePath = "C:\\Users\\dell\\AppData\\Roaming\\JetBrains\\IntelliJIdea2025.2\\extensions\\xxxxxx.h";
FileContent fileContent = FileContent.createForExternalFileLocation(filePath);
// 2. 模拟 include / 宏定义信息
HashMap<String, String> macros = new HashMap<>();
macros.put("__cplusplus", "1");
macros.put("XXXXX_DLL", ""); // 避免 class XXXXX_DLL 出错
macros.put("FRDTOMOON_ID", "int"); // 如果有类似 typedef 也要补
macros.put("CAbstractEntity", "int"); // 临时占位
macros.put("C_DBIDriver", "int");
macros.put("CTableQuery", "int");
IScannerInfo scannerInfo = new ScannerInfo(macros, new String[] {
"C:\\Users\\dell\\AppData\\Roaming\\JetBrains\\IntelliJIdea2025.2\\extensions"
});
IncludeFileContentProvider fileContentProvider = IncludeFileContentProvider.getEmptyFilesProvider();
// 3. 创建 TranslationUnit
IASTTranslationUnit translationUnit = GPPLanguage.getDefault().getASTTranslationUnit(
fileContent,
scannerInfo,
fileContentProvider,
null,
ITranslationUnit.AST_PARSE_INACTIVE_CODE,
new DefaultLogService()
);
// 4. 遍历 AST,找到类定义
// 假设你已经有 IASTTranslationUnit tu(通过 GPPLanguage.getDefault().getASTTranslationUnit(...))
translationUnit.accept(new ASTVisitor(true) {
{
// 一定要打开这些 flag
shouldVisitDeclarations = true;
shouldVisitDeclSpecifiers = true;
shouldVisitNamespaces = true;
// 如果头文件内有宏可能屏蔽成员,考虑打开:
// includeInactiveNodes = true;
}
// 处理命名空间(可选)
@Override
public int visit(ICPPASTNamespaceDefinition namespaceDefinition) {
System.out.println("namespace: " + (namespaceDefinition.getName() != null ? namespaceDefinition.getName() : "<anon>"));
// namespace 内部声明也会单独触发 visit(IASTDeclaration),
// 这里可以选择直接遍历 namespaceDefinition.getDeclarations() 或交由 visit(IASTDeclaration) 处理。
return PROCESS_CONTINUE;
}
@Override
public int visit(IASTProblem problem) {
System.out.println("Parser problem: " + problem.getMessage()
+ " at " + problem.getFileLocation().getFileName()
+ ":" + problem.getFileLocation().getStartingLineNumber());
return PROCESS_CONTINUE;
}
// 处理所有声明(包括 class/struct 的声明)
@Override
public int visit(IASTDeclaration declaration) {
// 只关心简单声明(class/struct 在 simpleDecl 的 declSpec 中)
if (declaration instanceof IASTSimpleDeclaration) {
IASTSimpleDeclaration simpleDecl = (IASTSimpleDeclaration) declaration;
IASTDeclSpecifier declSpec = simpleDecl.getDeclSpecifier();
// 如果这是 class/struct 的定义(复合类型)
if (declSpec instanceof ICPPASTCompositeTypeSpecifier) {
ICPPASTCompositeTypeSpecifier classSpec = (ICPPASTCompositeTypeSpecifier) declSpec;
System.out.println("Class/Struct: " + classSpec.getName());
// 关键点:成员就在 classSpec.getMembers()
IASTDeclaration[] members = classSpec.getMembers();
for (IASTDeclaration member : members) {
// 我们主要关心成员变量(IASTSimpleDeclaration 且 declarators 非空 且 不是函数)
if (member instanceof IASTSimpleDeclaration) {
IASTSimpleDeclaration memberDecl = (IASTSimpleDeclaration) member;
IASTDeclarator[] decs = memberDecl.getDeclarators();
if (decs != null && decs.length > 0) {
// 如果 declarator 不是函数 declarator,则为字段
if (!(decs[0] instanceof IASTFunctionDeclarator)) {
String type = memberDecl.getDeclSpecifier() != null ?
memberDecl.getDeclSpecifier().getRawSignature() : "<unknown>";
for (IASTDeclarator d : decs) {
// 安全取名(有时 getName() 为空)
String name = (d.getName() != null) ? d.getName().toString() : d.getRawSignature();
System.out.println(" field: " + name + " | type: " + type);
}
}
}
}
// 如果成员是函数定义,也可以在这里处理(可选)
else if (member instanceof IASTFunctionDefinition) {
IASTFunctionDefinition fd = (IASTFunctionDefinition) member;
String fname = fd.getDeclarator() != null && fd.getDeclarator().getName() != null ?
fd.getDeclarator().getName().toString() : "<anon>";
System.out.println(" method-def: " + fname);
}
}
}
// 如果这是顶层 enum(也可能出现在类内)
else if (declSpec instanceof ICPPASTEnumerationSpecifier) {
// 可按需处理
}
}
// 另外,如果遇到类外的函数定义(有函数体),也可以处理
else if (declaration instanceof IASTFunctionDefinition) {
// 处理类外限定名的函数定义(例如 CAbstractRead::serialize)
IASTFunctionDefinition funcDef = (IASTFunctionDefinition) declaration;
IASTFunctionDeclarator fd = funcDef.getDeclarator();
if (fd != null) {
System.out.println("Top-level function def: " + fd.getName());
}
}
return PROCESS_CONTINUE;
}
});
// 5. 从 binding 里提取字段
for (IASTDeclaration decl : translationUnit.getDeclarations()) {
if (decl instanceof IASTSimpleDeclaration) continue;
if (decl instanceof ICPPASTCompositeTypeSpecifier) {
ICPPASTCompositeTypeSpecifier cls = (ICPPASTCompositeTypeSpecifier) decl;
ICPPClassType binding = (ICPPClassType) cls.getName().resolveBinding();
if (binding != null) {
System.out.println("类名: " + binding.getName());
for (ICPPField field : binding.getDeclaredFields()) {
System.out.println("成员变量: " + field.getName() +
" , 类型: " + field.getType().toString());
}
}
}
}
}
private static void handleClassMember(IASTDeclaration member) {
if (member instanceof IASTSimpleDeclaration) {
IASTSimpleDeclaration memberDecl = (IASTSimpleDeclaration) member;
IASTDeclarator[] declarators = memberDecl.getDeclarators();
if (declarators.length == 0) return;
// 变量
if (!(declarators[0] instanceof IASTFunctionDeclarator)) {
String type = memberDecl.getDeclSpecifier().getRawSignature();
for (IASTDeclarator d : declarators) {
String name = d.getName().toString();
System.out.println(" 字段: " + name + " | 类型: " + type);
}
}
}
}
}
代码注意点:
//上面代码中的这里可以把 c++里面的宏跳过定义处理,如果你的头文件有定义宏,并且没有在这put上,可能会解析失败 HashMap<String, String> macros = new HashMap<>();

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