@Test
public void testShadowingScopeShadowsEnclosingScope() {
CommonScope enclosingScope = new CommonScope(false);
// is shadowing scope
CommonScope scope = new CommonScope(Optional.of(enclosingScope), true);
JTypeReference intReference = new CommonJTypeReference<>("int", JTypeSymbol.KIND, scope);
JTypeReference stringReference = new CommonJTypeReference<>("String", JTypeSymbol.KIND, scope);
PropertySymbol v1 = new PropertySymbol("var", intReference);
enclosingScope.add(v1);
PropertySymbol x = new PropertySymbol("x", intReference);
enclosingScope.add(x);
PropertySymbol v2 = new PropertySymbol("var", stringReference);
scope.add(v2);
PropertySymbol y = new PropertySymbol("y", stringReference);
scope.add(y);
ResolvingFilter<PropertySymbol> variableResolvingFilter =
CommonResolvingFilter.create(PropertySymbol.KIND);
enclosingScope.addResolver(variableResolvingFilter);
scope.addResolver(variableResolvingFilter);
assertSame(v1, enclosingScope.resolve("var", PropertySymbol.KIND).get());
assertSame(x, enclosingScope.resolve("x", PropertySymbol.KIND).get());
assertSame(x, scope.resolve("x", PropertySymbol.KIND).get());
assertSame(y, scope.resolve("y", PropertySymbol.KIND).get());
// shadows enclosing var
assertSame(v2, scope.resolve("var", PropertySymbol.KIND).get());
}
@Test
public void testLocalScopeDoesNotShadowEnclosingScope() {
CommonScope enclosingScope = new CommonScope(false);
CommonScope scope = new CommonScope(Optional.of(enclosingScope), false);
JTypeReference intReference = new CommonJTypeReference<>("int", JTypeSymbol.KIND, scope);
JTypeReference stringReference = new CommonJTypeReference<>("String", JTypeSymbol.KIND, scope);
PropertySymbol v1 = new PropertySymbol("var", intReference);
enclosingScope.add(v1);
PropertySymbol x = new PropertySymbol("x", intReference);
enclosingScope.add(x);
PropertySymbol v2 = new PropertySymbol("var", stringReference);
scope.add(v2);
PropertySymbol y = new PropertySymbol("y", stringReference);
scope.add(y);
ResolvingFilter<PropertySymbol> variableResolvingFilter =
CommonResolvingFilter.create(PropertySymbol.KIND);
enclosingScope.addResolver(variableResolvingFilter);
scope.addResolver(variableResolvingFilter);
assertSame(v1, enclosingScope.resolve("var", PropertySymbol.KIND).get());
assertSame(x, enclosingScope.resolve("x", PropertySymbol.KIND).get());
assertSame(x, scope.resolve("x", PropertySymbol.KIND).get());
assertSame(y, scope.resolve("y", PropertySymbol.KIND).get());
try {
scope.resolve("var", PropertySymbol.KIND);
fail();
} catch (ResolvedSeveralEntriesException e) {
assertEquals(2, e.getSymbols().size());
assertTrue(e.getSymbols().contains(v2));
assertTrue(e.getSymbols().contains(v1));
}
}
