private CompilerContext IfStatement(CompilerContext context)
{
var ifFalse = Enumerable.Empty <Instruction>();
var expression = context.Node.GetNamedChild("if_condition").GetNamedChild("relational_expression");
context.Compile(expression);
var jumpCode = context.JumpExpression;
var block = context.Node.GetNamedChild("block");
var child = context.Push(block);
CodeStream ifTrue = child.Compiler(child);
var elseBlock = context.Node.GetNamedChild("else_block");
if (elseBlock != null)
{
block = elseBlock.GetNamedChild("block");
child = context.Push(block);
ifFalse = child.Compiler(child);
ifTrue.AsFluent()
.Jmp.I(ifFalse.Count() + 1);
}
context.Code.AsFluent()
.UnaryOp(jumpCode).I(ifTrue.Count() + 1);
context.Code += ifTrue;
context.Code += ifFalse;
return(context);
}
public void Movi()
{
var stream = new CodeStream();
stream.AsFluent()
.Mov.RI(Register.A, 0);
Assert.That(stream.First(), Is.EqualTo(new Instruction(OpCode.Mov).Destination(Register.A).Source(0)).Using(new InstructionComparer()));
}
public void Movi()
{
var stream = new CodeStream();
stream.AsFluent()
.Mov.RI(Register.A, 0);
Assert.That(stream.First(), Is.EqualTo(new Instruction(OpCode.Mov).Destination(Register.A).Source(0)).Using(new InstructionComparer()));
}
public void Movr()
{
var stream = new CodeStream();
stream.AsFluent()
.Mov.RR(Register.A, Register.B);
var expected = new Instruction(OpCode.Mov).Source(Register.B).Destination(Register.A);
Assert.That(stream.First(), Is.EqualTo(expected).Using(new InstructionComparer()));
}
public void Movr()
{
var stream = new CodeStream();
stream.AsFluent()
.Mov.RR(Register.A, Register.B);
var expected = new Instruction(OpCode.Mov).Source(Register.B).Destination(Register.A);
Assert.That(stream.First(), Is.EqualTo(expected).Using(new InstructionComparer()));
}
