private static Interpreter.Stmt CompileStmt(StmtBlock stmtBlock)
{
if (stmtBlock is ScopedBlock)
{
ScopedBlock scopedBlock = (ScopedBlock)stmtBlock;
if (scopedBlock is RepeatBlock)
{
RepeatBlock repeatBlock = (RepeatBlock)scopedBlock;
return(new Interpreter.Repeat
{
Body = new Interpreter.Block
{
Statements = repeatBlock.StatementBlocks
.Select(CompileStmt).ToList()
}
});
}
if (scopedBlock is IfBlock)
{
IfBlock ifBlock = (IfBlock)scopedBlock;
if (ifBlock.EntityToCheck == null)
{
throw new CompilerException($"Missing arugment in if block.");
}
return(new Interpreter.If
{
Cond = new Interpreter.BoolExpr {
type = ifBlock.EntityToCheck.Value, Value = ifBlock.Not
},
Then = new Interpreter.Block
{
Statements = ifBlock.StatementBlocks.Select(CompileStmt).ToList()
},
Else = null
});
}
if (scopedBlock is StmtListBlock)
{
StmtListBlock stmtListBlock = (StmtListBlock)scopedBlock;
return(new Interpreter.Block
{
Statements = stmtListBlock.StatementBlocks
.Select(CompileStmt).ToList()
});
}
throw new CompilerException($"Scoped block {scopedBlock.GetType().Name} is not supported.");
}
if (stmtBlock is ConjureBlock)
{
ConjureBlock conjureBlock = (ConjureBlock)stmtBlock;
if (conjureBlock.EntityToConjure == null)
{
throw new CompilerException($"Missing argument in statement Conjure.");
}
return(new Interpreter.Conjure
{
Entity = conjureBlock.EntityToConjure.Value
});
}
if (stmtBlock is ChangeBlock)
{
ChangeBlock changeBlock = (ChangeBlock)stmtBlock;
if (changeBlock.Adjective == null)
{
throw new CompilerException($"Missing argument in statement Change.");
}
return(new Interpreter.Change
{
Adjective = changeBlock.Adjective.Value
});
}
if (stmtBlock is MoveBlock)
{
MoveBlock moveBlock = (MoveBlock)stmtBlock;
if (moveBlock.Dir == null)
{
throw new CompilerException($"Missing direction argument in statement Move.");
}
if (moveBlock.Distance == null || moveBlock.Distance <= 0 || moveBlock.Distance > 3)
{
throw new CompilerException($"Missing distance argument in statement Move.");
}
return(new Interpreter.Move {
Dir = moveBlock.Dir.Value, Distance = moveBlock.Distance.Value
});
}
if (stmtBlock is BreakBlock)
{
return(new Interpreter.Break());
}
throw new CompilerException($"Statement block {stmtBlock.GetType().Name} is not supported.");
}
public static Interpreter.Block Compile(StmtListBlock block)
{
return((Interpreter.Block)CompileStmt(block));
}