CDTを用いたC言語のパース（org.eclipse.cdt.coreをクラスパスに追加、JDT関係のライブラリも追加）

CdtParser.java

package cdtparser;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Map;

import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
import org.eclipse.cdt.core.dom.ast.gnu.c.GCCLanguage;
import org.eclipse.cdt.core.index.IIndex;
import org.eclipse.cdt.core.model.ILanguage;
import org.eclipse.cdt.core.parser.DefaultLogService;
import org.eclipse.cdt.core.parser.FileContent;
import org.eclipse.cdt.core.parser.IParserLogService;
import org.eclipse.cdt.core.parser.IScannerInfo;
import org.eclipse.cdt.core.parser.IncludeFileContentProvider;
import org.eclipse.cdt.core.parser.ScannerInfo;
import org.eclipse.core.runtime.CoreException;

public class CdtParser {

	public static void main(String[] args) throws CoreException, FileNotFoundException, IOException {
		String filePath = "src/main/resources/gcd.c";
		StringBuilder source = new StringBuilder();
		try(FileReader fr = new FileReader(filePath)) {
			int c;
			while ((c = fr.read()) >= 0) {
				source.append((char)c);
			}
		}

		ILanguage language = GCCLanguage.getDefault();

		FileContent reader = FileContent.create(filePath, source.toString().toCharArray());

		Map<String, String> macroDefinitions = null;
		String[] includeSearchPath = null;
		IScannerInfo scanInfo = new ScannerInfo(macroDefinitions, includeSearchPath );

		IncludeFileContentProvider fileCreator = IncludeFileContentProvider.getEmptyFilesProvider();
		IIndex index = null;
		int options = 0;
		IParserLogService log = new DefaultLogService();

		IASTTranslationUnit translationUnit = language.getASTTranslationUnit(reader, scanInfo, fileCreator, index, options, log);

		ASTVisitor visitor = new ASTVisitor(true) {
			public int visit(IASTDeclarator decl) {
				/* do something */
				System.out.println(decl.getName());
				return ASTVisitor.PROCESS_CONTINUE;
			}
		};
		translationUnit.accept(visitor);
	}
}