public void TestExceptions()
{
const string NOT_HERE = "Should've thrown an Exception instead of ending up here.";
try {
SimpleParser.Build(Parser.ParseString("{not-node}"));
Assert.Fail(NOT_HERE);
} catch (Exception e) {
Assert.AreEqual(e.GetType(), typeof(InvalidDataException));
Assert.AreEqual(e.Message, "Syntax error: () list expected while building a Node.");
}
try {
SimpleParser.Build(Parser.ParseString("(not a node because has lots of expressions)"));
Assert.Fail(NOT_HERE);
} catch (Exception e) {
Assert.AreEqual(e.GetType(), typeof(InvalidDataException));
Assert.AreEqual(e.Message, "Syntax error: Node's () list must contain from 1 to 3 element within.");
}
try {
SimpleParser.Build(Parser.ParseString("()")); // not a node because not enough expressions within
Assert.Fail(NOT_HERE);
} catch (Exception e) {
Assert.AreEqual(e.GetType(), typeof(InvalidDataException));
Assert.AreEqual(e.Message, "Syntax error: Node's () list must contain from 1 to 3 element within.");
}
try {
SimpleParser.Build(Parser.ParseString("((name))"));
Assert.Fail(NOT_HERE);
} catch (Exception e) {
Assert.AreEqual(e.GetType(), typeof(InvalidDataException));
Assert.AreEqual(e.Message, "Syntax error: Node's name must be a keyword.");
}
try {
SimpleParser.Build(Parser.ParseString("(n [] {})"));
Assert.Fail(NOT_HERE);
} catch (Exception e) {
Assert.AreEqual(e.GetType(), typeof(InvalidDataException));
Assert.AreEqual(e.Message, "Syntax error: {} list excepted while building Node's attributes.");
}
try {
SimpleParser.Build(Parser.ParseString("(n {(n)})"));
Assert.Fail(NOT_HERE);
} catch (Exception e) {
Assert.AreEqual(e.GetType(), typeof(InvalidDataException));
Assert.AreEqual(e.Message, "Syntax error: attribute name must be a keyword.");
}
try {
SimpleParser.Build(Parser.ParseString("(n {} {})"));
Assert.Fail(NOT_HERE);
} catch (Exception e) {
Assert.AreEqual(e.GetType(), typeof(InvalidDataException));
Assert.AreEqual(e.Message, "Syntax error: Node's child or children cannot be represented as {} list.");
}
}
public void TestBuilding()
{
var x = Parser.ParseString("(node {attr (node 3.14) attr2 (node [\"6\" \"7\"])} [true false null])");
var s = SimpleParser.Build(x);
var n = s as Node;
AssertNode(n, "node", 2, 3);
var attr = n.Attributes["attr"];
var attrNode = attr as Node;
AssertNode(attrNode, "node", 0, 1);
AssertNumberLiteral(attrNode.Children[0] as NumberLiteral, 3, 14);
var attr2 = n.Attributes["attr2"];
var attr2Node = attr2 as Node;
AssertNode(attr2Node, "node", 0, 2);
AssertStringLiteral(attr2Node.Children[0] as StringLiteral, "6");
AssertStringLiteral(attr2Node.Children[1] as StringLiteral, "7");
AssertBooleanLiteral(n.Children[0] as BooleanLiteral, true);
AssertBooleanLiteral(n.Children[1] as BooleanLiteral, false);
Assert.AreEqual(n.Children[2].GetType(), typeof(NullLiteral));
// a few other cases
var fn = TestHelper.MakeTempFile("(node (node {a 1 b 2}))");
s = SimpleParser.Parse(fn);
TestHelper.DeleteTempFile(fn);
n = s as Node;
AssertNode(n, "node", 0, 1);
n = n.Children[0] as Node;
AssertNode(n, "node", 2, 0);
AssertNumberLiteral(n.Attributes["a"] as NumberLiteral, 1, 0);
}
private static ValueCondition ParseOperator(string condition, string operatorName, int index)
{
string attributeName = null;
if (index > 0)
{
attributeName = condition.Substring(0, index);
if (!attributeName.StartsWith("@"))
{
throw new InvalidDataException("Invalid attribute name given (does not start with an @).");
}
attributeName = attributeName.Substring(1); // remove @
}
var value = condition.Substring(index + operatorName.Length);
var expr = Parser.ParseString(value);
if (!(expr is LiteralExpression))
{
throw new InvalidDataException("Argument of an operator in value condition is not a literal.");
}
var sdf = SimpleParser.Build(expr);
OperatorCondition operatorCondition;
switch (operatorName)
{
case "=":
case "!=":
// common operators
operatorCondition = new CommonOperatorCondition(operatorName, sdf);
break;
case ">":
case "<":
case ">=":
case "<=":
// number operators
if (!(sdf is NumberLiteral))
{
throw new InvalidDataException("Cannot apply a number operator in value condition to something but a number literal.");
}
operatorCondition = new NumberOperatorCondition(operatorName, (NumberLiteral)sdf);
break;
case "~=":
case "^=":
case "$=":
case "!~=":
case "!^=":
case "!$=":
// string operators
if (!(sdf is StringLiteral))
{
throw new InvalidDataException("Cannot apply a string operator in value condition to something but a string literal.");
}
operatorCondition = new StringOperatorCondition(operatorName, (StringLiteral)sdf);
break;
default:
throw new InvalidDataException("Unknown operator given.");
}
if (attributeName != null)
{
return(new AttributeValueCondition(attributeName, operatorCondition));
}
return(new NodeValueCondition(operatorCondition));
}
// parsing
internal static SDF ParseString(string s)
{
return(SimpleParser.Build(Parser.ParseString(s)));
}
