public BinaryOperation(String op, Expression leftOperand, Expression rightOperand)
: base("")
{
Operator = op;
LeftOperand = leftOperand;
RightOperand = rightOperand;
}
public static Block Parse(String body)
{
var block = new Block();
var lexer = new Lexer(body);
while (lexer.HasNext())
{
// Conditional
if (lexer.PeekToken() == "if")
{
lexer.SkipToken(); // Absorb if
Expression condition = new Expression(lexer.ReadBlock("(", ")"));
Block b = Block.Parse(lexer.ReadBlock("{", "}"));
IfStatement statement = new IfStatement(condition, b);
block.Statements.Add(statement);
}
else if(lexer.PeekToken(2) == "=")
{
var type = lexer.ReadToken();
var name = lexer.ReadToken();
lexer.SkipToken();
var value = lexer.ReadUntil(";");
var variableDefinition = new VariableDefinition(name, type, value);
block.Statements.Add(variableDefinition);
}
else
{
string str = lexer.ReadUntil(";");
block.Statements.Add( Expression.Parse(str) );
lexer.SkipToken(); // Skip ;
}
}
return block;
}
public VariableDefinition(String name, String type, String value = "")
{
VariableName = name;
Type = type;
Value = Expression.Parse(value);
}
public IfStatement(Expression condition, Block block)
: base(condition, block)
{
}
public UnaryOperation(String op, Expression operand)
: base("")
{
Operator = op;
Operand = operand;
}
public VariableReference(Expression left, Expression right)
: base(".", left, right)
{
}
public Conditional(Expression condition, Block block)
{
Condition = condition;
Body = block;
}
