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package org.netbeans.modules.cnd.modelimpl.csm;
import antlr.collections.AST;
import java.util.ArrayList;
import java.util.List;
import org.netbeans.modules.cnd.modelimpl.csm.core.AstUtil;
import org.netbeans.modules.cnd.modelimpl.parser.generated.CPPTokenTypes;
/**
* Utility class used for user cast operators processing.
*
* @author Vladimir Kvashin
*/
public class CastUtils {
public static boolean isCast(AST ast) {
switch( ast.getType() ) {
case CPPTokenTypes.CSM_USER_TYPE_CAST:
case CPPTokenTypes.CSM_USER_TYPE_CAST_DEFINITION:
return true;
default:
return false;
}
}
public static String getFunctionName(AST ast) {
assert isCast(ast);
AST operator = AstUtil.findChildOfType(ast, CPPTokenTypes.LITERAL_OPERATOR);
if( operator == null ) {
// error in AST
return "operator ???"; // NOI18N
}
StringBuilder sb = new StringBuilder(operator.getText());
sb.append(' ');
begin:
for( AST next = operator.getNextSibling(); next != null; next = next.getNextSibling() ) {
switch( next.getType() ) {
case CPPTokenTypes.CSM_TYPE_BUILTIN:
case CPPTokenTypes.CSM_TYPE_COMPOUND:
sb.append(' ');
addTypeText(next, sb);
break;
case CPPTokenTypes.LPAREN:
break begin;
case CPPTokenTypes.AMPERSAND:
case CPPTokenTypes.STAR:
case CPPTokenTypes.LITERAL_const:
sb.append(next.getText());
break;
default:
sb.append(' ');
sb.append(next.getText());
}
}
return sb.toString();
}
private static void addTypeText(AST ast, StringBuilder sb) {
if( ast == null ) {
return;
}
for( AST child = ast.getFirstChild(); child != null; child = child.getNextSibling() ) {
if( CPPTokenTypes.CSM_START <= child.getType() && child.getType() <= CPPTokenTypes.CSM_END ) {
addTypeText(child, sb);
}
else {
String text = child.getText();
assert text != null;
assert text.length() > 0;
if( sb.length() > 0 ) {
if( Character.isLetterOrDigit(sb.charAt(sb.length() - 1)) ) {
if( Character.isLetterOrDigit(text.charAt(0)) ) {
sb.append(' ');
}
}
}
sb.append(text);
}
}
}
public static String[] getClassOrNspNames(AST ast) {
assert isCast(ast);
AST child = ast.getFirstChild();
if( child != null && child.getType() == CPPTokenTypes.ID ) {
AST next = child.getNextSibling();
if( next != null && next.getType() == CPPTokenTypes.SCOPE ) {
List<String> l = new ArrayList<String>();
l.add(child.getText());
begin:
for( next = next.getNextSibling(); next != null; next = next.getNextSibling() ) {
switch( next.getType() ) {
case CPPTokenTypes.ID:
l.add(next.getText());
break;
case CPPTokenTypes.SCOPE:
break; // do nothing
default:
break begin;
}
}
return (String[]) l.toArray(new String[l.size()]);
}
}
return null;
}
public static boolean isMemberDefinition(AST ast) {
assert isCast(ast);
AST child = ast.getFirstChild();
if( child != null && child.getType() == CPPTokenTypes.ID ) {
child = child.getNextSibling();
if( child != null && child.getType() == CPPTokenTypes.SCOPE ) {
return true;
}
}
return false;
}
}
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