public static UnifiedIntegerLiteral CreateDecimalLiteral(XElement node)
{
Contract.Requires(node != null);
Contract.Requires(node.Name() == "DECIMAL_LITERAL");
/*
* DECIMAL_LITERAL : ('0' | '1'..'9' '0'..'9'*) IntegerTypeSuffix? ;
*/
var result = LiteralFuzzyParser.ParseBigInteger(node.Value);
return(UnifiedIntegerLiteral.CreateInt32(result));
}
public static UnifiedIntegerLiteral CreateOctalLiteral(XElement node)
{
Contract.Requires(node != null);
Contract.Requires(node.Name() == "OCTAL_LITERAL");
/*
* OCTAL_LITERAL : '0' ('0'..'7')+ IntegerTypeSuffix? ;
*/
var result =
LiteralFuzzyParser.ParseOcatleBigInteger(
node.Value.Substring(1));
return(UnifiedIntegerLiteral.CreateInt32(result));
}
// literals
public static UnifiedIntegerLiteral CreateHexLiteral(XElement node)
{
Contract.Requires(node != null);
Contract.Requires(node.Name() == "HEX_LITERAL");
/*
* HEX_LITERAL : '0' ('x'|'X') HexDigit+ IntegerTypeSuffix? ;
*/
var result =
LiteralFuzzyParser.ParseHexicalBigInteger(
node.Value.Substring(2));
return(UnifiedIntegerLiteral.CreateInt32(result));
}
private static UnifiedExpression CreateRange(XElement node)
{
Contract.Requires(node != null);
Contract.Requires(node.Name() == "Range");
if (node.Value.Contains("..."))
{
var numbers = node.Value.Split(
new[] { "..." }, StringSplitOptions.None);
return(UnifiedRange.CreateNotContainingMax(
UnifiedIntegerLiteral.CreateInt32(
LiteralFuzzyParser.ParseBigInteger(numbers[0])),
UnifiedIntegerLiteral.CreateInt32(
LiteralFuzzyParser.ParseBigInteger(numbers[1]))));
}
{
var numbers = node.Value.Split(
new[] { ".." }, StringSplitOptions.None);
return(UnifiedRange.Create(
UnifiedIntegerLiteral.CreateInt32(
LiteralFuzzyParser.ParseBigInteger(numbers[0])),
UnifiedIntegerLiteral.CreateInt32(
LiteralFuzzyParser.ParseBigInteger(numbers[1]))));
}
}
