/**
* BSD-style license; for more info see http://pmd.sourceforge.net/license.html
*/
package net.sourceforge.pmd.lang.java.symboltable;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import net.sourceforge.pmd.lang.ast.Node;
import net.sourceforge.pmd.lang.java.ast.ASTName;
import net.sourceforge.pmd.lang.symboltable.Applier;
import net.sourceforge.pmd.lang.symboltable.NameDeclaration;
import net.sourceforge.pmd.lang.symboltable.NameOccurrence;
/**
* A LocalScope can have variable declarations and class declarations within it.
*/
public class LocalScope extends AbstractJavaScope {
public Map<VariableNameDeclaration, List<NameOccurrence>> getVariableDeclarations() {
return getDeclarations(VariableNameDeclaration.class);
}
public Set<NameDeclaration> addNameOccurrence(NameOccurrence occurrence) {
JavaNameOccurrence javaOccurrence = (JavaNameOccurrence) occurrence;
Set<NameDeclaration> declarations = findVariableHere(javaOccurrence);
if (!declarations.isEmpty() && !javaOccurrence.isThisOrSuper()) {
for (NameDeclaration decl : declarations) {
List<NameOccurrence> nameOccurrences = getVariableDeclarations().get(decl);
nameOccurrences.add(javaOccurrence);
Node n = javaOccurrence.getLocation();
if (n instanceof ASTName) {
((ASTName) n).setNameDeclaration(decl);
} // TODO what to do with PrimarySuffix case?
}
}
return declarations;
}
public void addDeclaration(NameDeclaration nameDecl) {
if (!(nameDecl instanceof VariableNameDeclaration || nameDecl instanceof ClassNameDeclaration)) {
throw new IllegalArgumentException(
"A LocalScope can contain only VariableNameDeclarations or ClassNameDeclarations. "
+ "Tried to add " + nameDecl.getClass() + "(" + nameDecl + ")");
}
super.addDeclaration(nameDecl);
}
public Set<NameDeclaration> findVariableHere(JavaNameOccurrence occurrence) {
if (occurrence.isThisOrSuper() || occurrence.isMethodOrConstructorInvocation()) {
return Collections.emptySet();
}
DeclarationFinderFunction finder = new DeclarationFinderFunction(occurrence);
Applier.apply(finder, getVariableDeclarations().keySet().iterator());
if (finder.getDecl() != null) {
return Collections.singleton(finder.getDecl());
}
return Collections.emptySet();
}
public String toString() {
return "LocalScope:" + glomNames(getVariableDeclarations().keySet());
}
}