import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
@Override
public boolean visit(ICElement elt) {
	switch (elt.getElementType()) {
	case ICElement.C_PROJECT:
		visit( (ICProject) elt);
		break;
	case ICElement.C_CCONTAINER:
		visit( (ICContainer) elt);
		break;
	case ICElement.C_UNIT:
		visit( (ITranslationUnit) elt);
		break;
	case ICElement.C_INCLUDE:
		visit( (IInclude) elt);
		break;

	default:
		//  I believe this should never happen
	}
	return false;
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
/**
 * We will accept the selection in the workbench to see if
 * we can initialize from it.
 * @see IWorkbenchWizard#init(IWorkbench, IStructuredSelection)
 */
public void init(IWorkbench workbench, IStructuredSelection selection) {
	this.selection = selection;
	WPILibCPPPlugin.logInfo(selection.toString());
	Object element = ((StructuredSelection) selection).getFirstElement();
	WPILibCPPPlugin.logInfo(element.getClass().toString());
	if (element instanceof IResource) {
		project = ((IResource) element).getProject();
	} else if (element instanceof ISourceRoot) {
		project = ((ISourceRoot) element).getCProject().getProject();
	} else if (element instanceof ITranslationUnit) {
		project = ((ITranslationUnit) element).getCProject().getProject();
	} else if (element instanceof ISourceRoot) {
		project = ((ISourceRoot) element).getCProject().getProject();
	} else if (element instanceof ICContainer) {
		project = ((ICContainer) element).getCProject().getProject();
	} else WPILibCPPPlugin.logInfo("Element not instance of IResource: "+element.getClass());
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
/**
 * Overriden to initialize some flags to <code>false</code>
 * (e.g. at the begining of a .c file) 
 */
@Override
public void visit(ITranslationUnit elt) {
	super.visit(elt);

	inSizeofExpression = false;
	inCastExpression = false;
	inTemplateArgumentExpression = false;
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
/**
 * Overriden to initialize {@link #inAmpersandUnaryExpression} and  {@link #inCastExpr} to <code>false</code>
 * (e.g. at the begining of a .c file) 
 */
@Override
public void visit(ITranslationUnit elt) {
	super.visit(elt);

	inAmpersandUnaryExpression = false;
	inCastExpression = false;
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
protected boolean checkHeader(ITranslationUnit tu) {
	if (visitHeaders) {
		return FileUtil.isHeader(tu);
	}
	else {
		return (! FileUtil.isHeader(tu) );
	}
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
@Override
public void visit(ITranslationUnit elt) {
	String filename = elt.getFile().getFullPath().toString();        // fullPath relative to project directory
	IBinding key = resolver.mkStubKey(projPath+filename, /*container*/null, CFile.class);   // better not to localize filename for the key
	currentFile = dico.ensureFamixCFile(key, FileUtil.localized(filename, projectRootFolder));
	
	// overriding superclass visit() to not visit AST but only the children
	visitChildren(elt);
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
public void visit(ITranslationUnit elt) {
	this.filename = FileUtil.localized(elt.getFile().getRawLocation().toString(), rootFolder);

	try {
		elt.getAST(index, ITranslationUnit.AST_CONFIGURE_USING_SOURCE_CONTEXT | ITranslationUnit.AST_SKIP_INDEXED_HEADERS).accept(this);
	} catch (CoreException e) {
		Activator.log(IStatus.ERROR,"Got CoreException (\""+ e.getMessage() +"\") while getting AST of "+ elt.getElementName() );
	}
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
/**
 * Overridden to visit only .h or .c files
 */
@Override
public void visit(ITranslationUnit elt) {
	// XOR operator: (headerFiles AND isHeader()) OR (!headerFiles AND !isHeader())
	if (! (headerFiles ^ FileUtil.isHeader(elt)) ) {
		super.visit(elt);
	}
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
public static IASTTranslationUnit createIndexBasedAST(IIndex index, ICProject project, IFile file) throws CModelException, CoreException {
    ICElement elem = project.findElement(file.getFullPath());
    if (elem instanceof ITranslationUnit) {
        ITranslationUnit tu = (ITranslationUnit) elem;
        return tu.getAST(index, ITranslationUnit.AST_SKIP_INDEXED_HEADERS);
    }
    Assert.fail("Could not create AST for " + file.getFullPath());
    return null;
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
public static boolean isHeader(ITranslationUnit tu) {
	return isHeader(tu.getElementName());
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
@Override
public void visit(ITranslationUnit elt) {
	setContext(new CppEntityStack());
	this.filename = FileUtil.localized(elt.getFile().getRawLocation().toString(), rootFolder);
	super.visit(elt);
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
/**
 * Overriden to initialize {@link #currentVisibility} to null
 * (e.g. at the begining of a .c file) 
 */
@Override
public void visit(ITranslationUnit elt) {
	super.visit(elt);
	currentVisibility = null;
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
@Override
public void visit(ITranslationUnit elt) {
	super.visit(elt);
}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
/**
 * Files are treated as Modules
 */
@Override
public void visit(ITranslationUnit elt) {

}
 

import org.eclipse.cdt.core.model.ITranslationUnit; //导入依赖的package包/类
public void parse(String sourceCode){
	FileContent fileContent = new InternalFileContent(defaultFileName, new CharArray(sourceCode));
	enableOption(GPPLanguage.OPTION_IS_SOURCE_UNIT);
	enableOption(ITranslationUnit.AST_SKIP_ALL_HEADERS);
	parse(fileContent);
}