private Ast.Stmt ParseExecuteStmt(TokenQueue q)
{
var stmt = new Ast.ExecuteStmt {
SourceToken = q.SourceToken
};
q.Take("exec", "execute");
if (q.Peek(1) == "=")
{
stmt.ReturnVariableName = ParseVariableName(q);
q.Take("=");
}
if (q.PeekToken().Type == TokenType.String || q.PeekToken().Type == TokenType.Id)
{
stmt.ScriptName = q.Take().GetUnescapedText();
}
else
{
throw new SyntaxException(new[] { "string", "identifier" }, q);
}
if (IsVariableName(q.PeekToken()?.GetUnescapedText() ?? "") && q.Peek(1) == "=")
{
while (true)
{
var arg = new Ast.ArgumentPair();
arg.Name = ParseVariableName(q);
q.Take("=");
if (q.Peek() == "default")
{
q.Take();
}
else
{
arg.Value = ParseExpr(q);
}
stmt.Arguments.Add(arg);
if (!q.TakeMaybe(","))
{
break;
}
}
}
ConsumeSemicolon(q);
return(stmt);
}
private Ast.Stmt ParseForStmt(TokenQueue q)
{
var stmt = new Ast.ForStmt {
SourceToken = q.SourceToken
};
q.Take("for");
stmt.VariableName = ParseVariableName(q);
q.Take("=");
stmt.FirstNumberExpr = ParseExpr(q);
q.Take("to");
stmt.LastNumberExpr = ParseExpr(q);
if (q.TakeMaybe("step"))
{
stmt.StepExpr = ParseExpr(q);
}
stmt.Block = ParseBlock(q);
ConsumeSemicolon(q);
return(stmt);
}