/// <summary>
/// Constructs an IfExpr with the provided test expression.
/// </summary>
/// <param name="test">The condition to test.</param>
public IfExpr(Expr test)
{
if (!test.HasValue())
throw new HlslDomException("Test expression doesn't return a value!");
if (!(test.Value.ValueType is BoolType))
throw new HlslDomException("Test expression doesn't evaluate to a boolean type!");
Test = test;
}
/// <summary>
/// Construct a ForExpr with an attribute and an unroll depth.
/// </summary>
/// <param name="initializer">Initializer expression.</param>
/// <param name="test">Test expression, must evaluate to a scalar boolean.</param>
/// <param name="update">Update expression.</param>
/// <param name="attributes">Loop attribute.</param>
/// <param name="unrollDepth">Depth with which to unroll the loop, used with LoopAttributes.UNROLL</param>
public ForExpr(DeclExpr initializer, Expr test, Expr update, LoopAttributes attributes, int unrollDepth)
{
if (!test.HasValue())
throw new HlslDomException("Test expression doesn't return a value!");
if (!(test.Value.ValueType is BoolType))
throw new HlslDomException("Test expression does not return a boolean value!");
Initializer = initializer;
Test = test;
Update = update;
Attributes = attributes;
UnrollDepth = unrollDepth;
}
/// <summary>
/// Create a variable declaration initialized to the value of the given expression.
/// </summary>
/// <param name="expression">Expression; must resolve to a value.</param>
public DeclExpr(Expr expression)
{
if (!expression.HasValue())
throw new HlslDomException("Provided expression must resolve to a value!");
Type = expression.Value.ValueType;
Name = string.Format("var{0}", Counter++);
InitValue = expression.Value;
}
/// <summary>
/// Create a named variable declaration initialized to the value of the given expression.
/// </summary>
/// <param name="expression">Expression; must resolve to a value.</param>
/// <param name="name">Variable name.</param>
public DeclExpr(Expr expression, string name)
{
if (!expression.HasValue())
throw new HlslDomException("Provided expression must resolve to a value!");
Type = expression.Value.ValueType;
Name = name;
InitValue = expression.Value;
}
public CommaExpr(Expr lhs, Expr rhs)
{
if (!lhs.HasValue() || !rhs.HasValue())
throw new HlslDomException("Both the left and right hand sides of the comma expression must have a value!");
LHS = lhs;
RHS = rhs;
}