void BeforeChange()
{
SLJsonMonitor m = RetrieveMonitor();
if (m != null)
{
if (m.IsReadOnly)
{
throw new InvalidOperationException("Marked as read-only");
}
m.IsModified = true;
}
}
//------------------------------------------------------------------------
public SLJsonMonitor CreateMonitor()
{
if (m_Parent != null)
{
throw new InvalidOperationException("CreateMonitor is only allowed for the root node");
}
if (m_Monitor != null)
{
throw new InvalidOperationException("CreateMonitor must not be called several times");
}
m_Monitor = new SLJsonMonitor();
return(m_Monitor);
}
void TestReadWrite()
{
string s = RetrieveJsonExpression();
SLJsonNode n = SLJsonParser.Parse(s);
SLJsonMonitor m = n.CreateMonitor();
// Try to read some properties
Test.Assert(() => n["person"]["firstName"].AsString == "Jane");
Test.Assert(() => n["person"]["lastName"].AsString == "Doe");
Test.Assert(() => n["person"]["zipCode"].AsString == "12345");
Test.Assert(() => !m.IsModified);
try
{
m.IsReadOnly = true;
n["abc"]["def"][100] = 0;
Test.Assert(() => false);
}
catch (InvalidOperationException)
{
m.IsReadOnly = false;
Test.Assert(() => true);
}
Test.Assert(() => !m.IsModified);
// Try to change an existing property
n["person"]["firstName"].AsString = "John";
Test.Assert(() => n["person"]["firstName"].AsString == "John");
Test.Assert(() => m.IsModified);
// Try to add a new property
int c = n["person"].Count;
Test.Assert(() => n["person"]["newProperty"].NodeType == SLJsonNodeType.Missing);
n["person"]["newProperty"].AsInt32 = 333;
Test.Assert(() => n["person"].Count == c + 1);
Test.Assert(() => n["person"]["newProperty"].NodeType == SLJsonNodeType.Number);
Test.Assert(() => n["person"]["newProperty"].AsString == "333");
// Try to delete a property
c = n["person"].Count;
Test.Assert(() => n["person"]["lastName"].NodeType == SLJsonNodeType.String);
n["person"]["lastName"].Remove();
Test.Assert(() => n["person"].Count == c - 1);
Test.Assert(() => n["person"]["lastName"].NodeType == SLJsonNodeType.Missing);
Test.Assert(() => n["person"]["lastName"].AsString == null);
}
//------------------------------------------------------------------------
void TestReadOnly()
{
string s = RetrieveJsonExpression();
SLJsonNode n = SLJsonParser.Parse(s);
Test.Assert(() => n["person"]["firstName"].AsString == "Jane");
Test.Assert(() => n["person"]["lastName"].AsString == "Doe");
Test.Assert(() => n["person"]["zipCode"].AsString == "12345");
Test.Assert(() => !n["person"]["street"].IsReadOnly);
SLJsonMonitor m = n.CreateMonitor();
Test.Assert(() => !m.IsModified);
Test.Assert(() => !m.IsReadOnly);
m.IsReadOnly = true;
Test.Assert(() => n["person"]["street"].IsReadOnly);
Test.Assert(() => n["test"]["emptyArray"].IsArray);
Test.Assert(() => n["test"]["emptyArray"].Count == 0);
Test.Assert(() => n["test"]["emptyObject"].IsObject);
Test.Assert(() => n["test"]["emptyObject"].Count == 0);
Test.Assert(() => n["test"]["testArray"].IsArray);
Test.Assert(() => n["test"]["testArray"].Count == 4);
Test.Assert(() => n["test"]["testArray"][0].AsInt32 == 10);
Test.Assert(() => n["test"]["testArray"][1].AsInt32 == 20);
Test.Assert(() => n["test"]["testArray"][2].AsInt32 == 30);
Test.Assert(() => n["test"]["testArray"][3].AsInt32 == 40);
Test.Assert(() => n["test"]["testArray"][4].AsInt32 == 0); // Access to missing entry
Test.Assert(() => !n["test"]["testArray"][4].IsValue); // Check missing entry
Test.Assert(() => n["test"]["testArray"].Count == 4); // Check count again
Test.Assert(() => n["test"]["testObject"].NodeType == SLJsonNodeType.Object);
Test.Assert(() => n["test"]["testObject"].Count == 2);
Test.Assert(() => n["test"]["testObject"].AsString == null);
Test.Assert(() => n["test"]["testValueMissing__"].NodeType == SLJsonNodeType.Missing);
Test.Assert(() => !n["test"]["testValueMissing__"].AsBoolean);
Test.Assert(() => n["test"]["testValueMissing__"].AsInt32 == 0);
Test.Assert(() => n["test"]["testValueMissing__"].AsString == null);
Test.Assert(() => n["test"]["testValueNull"].NodeType == SLJsonNodeType.Null);
Test.Assert(() => !n["test"]["testValueNull"].AsBoolean);
Test.Assert(() => n["test"]["testValueNull"].AsInt32 == 0);
Test.Assert(() => n["test"]["testValueNull"].AsString == null);
Test.Assert(() => n["test"]["testValueTrue"].NodeType == SLJsonNodeType.Boolean);
Test.Assert(() => n["test"]["testValueTrue"].AsBoolean);
Test.Assert(() => n["test"]["testValueTrue"].AsInt32 == 0);
Test.Assert(() => n["test"]["testValueTrue"].AsString == "true");
Test.Assert(() => n["test"]["testValue32"].NodeType == SLJsonNodeType.Number);
Test.Assert(() => n["test"]["testValue32"].AsInt32 == 256);
Test.Assert(() => n["test"]["testValue32"].AsString == "+256");
Test.Assert(() => n["test"]["testValueString1"].NodeType == SLJsonNodeType.String);
Test.Assert(() => n["test"]["testValueString1"].AsString == "abc 'def' ghi");
Test.Assert(() => n["test"]["testValueString2"].NodeType == SLJsonNodeType.String);
Test.Assert(() => n["test"]["testValueString2"].AsString == "ABC 'DEF' GHI");
Test.Assert(() => n["test"]["testValueString3"].NodeType == SLJsonNodeType.String);
Test.Assert(() => n["test"]["testValueString3"].AsString == "First Line\r\nSecond Line\r\nThird Line\0");
// .NET MF seems to work internally with zero-terminated strings. As a result the test case fails.
if ("123\0".Length == 4)
{
Test.Assert(() => n["test"]["testValueString3"].AsJsonCompact == @"""First Line\r\nSecond Line\r\nThird Line\u0000""");
}
Test.Assert(() => !m.IsModified);
Test.Assert(() => m.IsReadOnly);
}