//
// Main entry point for parser.
// You pass in the expression you want to parse, and you get an
// ExpressionTree out the back end.
//
internal GenericExpressionNode Parse(string expression, ParserOptions optionSettings, ElementLocation elementLocation)
{
// We currently have no support (and no scenarios) for disallowing property references
// in Conditions.
ErrorUtilities.VerifyThrow(0 != (optionSettings & ParserOptions.AllowProperties),
"Properties should always be allowed.");
_options = optionSettings;
_elementLocation = elementLocation;
_lexer = new Scanner(expression, _options);
if (!_lexer.Advance())
{
errorPosition = _lexer.GetErrorPosition();
ProjectErrorUtilities.ThrowInvalidProject(elementLocation, _lexer.GetErrorResource(), expression, errorPosition, _lexer.UnexpectedlyFound);
}
GenericExpressionNode node = Expr(expression);
if (!_lexer.IsNext(Token.TokenType.EndOfInput))
{
errorPosition = _lexer.GetErrorPosition();
ProjectErrorUtilities.ThrowInvalidProject(elementLocation, "UnexpectedTokenInCondition", expression, _lexer.IsNextString(), errorPosition);
}
return(node);
}
public void SingleEquals()
{
Scanner lexer;
lexer = new Scanner("a=b", ParserOptions.AllowProperties);
AdvanceToScannerError(lexer);
Assert.Equal(lexer.GetErrorResource(), "IllFormedEqualsInCondition");
Assert.Equal(lexer.UnexpectedlyFound, "b");
}
private bool Same(string expression, Token.TokenType token)
{
if (_lexer.IsNext(token))
{
if (!_lexer.Advance())
{
errorPosition = _lexer.GetErrorPosition();
if (_lexer.UnexpectedlyFound != null)
{
ProjectErrorUtilities.ThrowInvalidProject(_elementLocation, _lexer.GetErrorResource(), expression, errorPosition, _lexer.UnexpectedlyFound);
}
else
{
ProjectErrorUtilities.ThrowInvalidProject(_elementLocation, _lexer.GetErrorResource(), expression, errorPosition);
}
}
return(true);
}
else
{
return(false);
}
}
//
// Main entry point for parser.
// You pass in the expression you want to parse, and you get an
// ExpressionTree out the back end.
//
internal GenericExpressionNode Parse(string expression, ParserOptions optionSettings, ElementLocation elementLocation)
{
// We currently have no support (and no scenarios) for disallowing property references
// in Conditions.
ErrorUtilities.VerifyThrow(0 != (optionSettings & ParserOptions.AllowProperties),
"Properties should always be allowed.");
_options = optionSettings;
_elementLocation = elementLocation;
_lexer = new Scanner(expression, _options);
if (!_lexer.Advance())
{
errorPosition = _lexer.GetErrorPosition();
ProjectErrorUtilities.VerifyThrowInvalidProject(false, elementLocation, _lexer.GetErrorResource(), expression, errorPosition, _lexer.UnexpectedlyFound);
}
GenericExpressionNode node = Expr(expression);
if (!_lexer.IsNext(Token.TokenType.EndOfInput))
{
errorPosition = _lexer.GetErrorPosition();
ProjectErrorUtilities.VerifyThrowInvalidProject(false, elementLocation, "UnexpectedTokenInCondition", expression, _lexer.IsNextString(), errorPosition);
}
return node;
}
public void IllFormedProperty()
{
Scanner lexer;
lexer = new Scanner("$(", ParserOptions.AllowProperties);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedPropertyCloseParenthesisInCondition");
lexer = new Scanner("$x", ParserOptions.AllowProperties);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedPropertyOpenParenthesisInCondition");
}
public void ItemListTests()
{
Scanner lexer;
lexer = new Scanner("@(foo)", ParserOptions.AllowProperties);
Assert.IsFalse(lexer.Advance());
Assert.IsTrue(String.Compare(lexer.GetErrorResource(), "ItemListNotAllowedInThisConditional") == 0);
lexer = new Scanner("1234 '@(foo)'", ParserOptions.AllowProperties);
Assert.IsTrue(lexer.Advance());
Assert.IsFalse(lexer.Advance());
Assert.IsTrue(String.Compare(lexer.GetErrorResource(), "ItemListNotAllowedInThisConditional") == 0);
lexer = new Scanner("'1234 @(foo)'", ParserOptions.AllowProperties);
Assert.IsFalse(lexer.Advance());
Assert.IsTrue(String.Compare(lexer.GetErrorResource(), "ItemListNotAllowedInThisConditional") == 0);
}
public void IllFormedQuotedString()
{
Scanner lexer;
lexer = new Scanner("false or 'abc", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedQuotedStringInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
lexer = new Scanner("\'", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedQuotedStringInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
}
public void IllFormedItemList()
{
Scanner lexer;
lexer = new Scanner("@(", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedItemListCloseParenthesisInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
lexer = new Scanner("@x", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedItemListOpenParenthesisInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
lexer = new Scanner("@(x", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedItemListCloseParenthesisInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
lexer = new Scanner("@(x->'%(y)", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedItemListQuoteInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
lexer = new Scanner("@(x->'%(y)', 'x", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedItemListQuoteInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
lexer = new Scanner("@(x->'%(y)', 'x'", ParserOptions.AllowAll);
AdvanceToScannerError(lexer);
Assert.IsTrue(lexer.GetErrorResource() == "IllFormedItemListCloseParenthesisInCondition");
Assert.IsTrue(lexer.UnexpectedlyFound == null);
}
