private void AssertProgram(ProgramNode program)
{
if (program.Expressions.Count == 0)
{
// no free-floating expressions, so we need to make sure there is at least one group with an expression
var hasExpressions = false;
foreach (var group in program.Groups)
{
if (group.Expressions.Count > 0)
{
hasExpressions = true;
break;
}
}
if (!hasExpressions)
{
throw new InvalidScheduleException("Schedule must contain at least one expression.", Input);
}
}
foreach (var group in program.Groups)
{
Group(group);
}
ExpressionList(program.Expressions);
}
/// <summary>
/// This method assumes the AST is valid and makes absolutely no attempt to further validate any node.
/// </summary>
/// <param name="program"></param>
/// <returns></returns>
public static IrProgram CompileAst(ProgramNode program)
{
var ir = new IrProgram();
// free-floating expressions are placed in an implicit group
var irGroup = CompileGroup(program.Expressions);
if (irGroup != null)
ir.Groups.Add(irGroup);
// compile all groups
foreach (var groupNode in program.Groups)
{
irGroup = CompileGroup(groupNode.Expressions);
if (irGroup != null)
ir.Groups.Add(irGroup);
}
return ir;
}
/// <summary>
/// This method assumes the AST is valid and makes absolutely no attempt to further validate any node.
/// </summary>
/// <param name="program"></param>
/// <returns></returns>
public static IrProgram CompileAst(ProgramNode program)
{
var ir = new IrProgram();
// free-floating expressions are placed in an implicit group
var irGroup = CompileGroup(program.Expressions);
if (irGroup != null)
{
ir.Groups.Add(irGroup);
}
// compile all groups
foreach (var groupNode in program.Groups)
{
irGroup = CompileGroup(groupNode.Expressions);
if (irGroup != null)
{
ir.Groups.Add(irGroup);
}
}
return(ir);
}
public Validator(string input, ProgramNode program)
{
Input = input;
Program = program;
}
public Validator(string input, ProgramNode program)
{
Input = input;
Program = program;
}
private ProgramNode ParseProgram()
{
var program = new ProgramNode();
while (!IsNext(TokenType.EndOfInput))
{
if (IsNext(TokenType.OpenCurly))
{
program.AddGroup(ParseGroup());
}
else if (IsNext(TokenType.ExpressionName))
{
program.AddExpression(ParseExpression());
}
else
{
throw WrongTokenException(TokenType.OpenCurly, TokenType.ExpressionName, TokenType.Comma);
}
if (IsNext(TokenType.Comma)) // optional comma
{
program.AddToken(Advance());
}
}
program.AddToken(Expect(TokenType.EndOfInput));
return program;
}
