jsonpiler 0.7.4

a Json syntax programming language for Windows
Documentation 
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use crate::{
  Arity::{AtLeast, Exactly},
  Bind::*,
  ErrOR, FuncInfo, Json, Jsonpiler,
  Register::*,
  ScopeInfo, built_in, take_arg,
  utility::take_len_c_a_d,
};
built_in! {self, func, _scope, string;
  f_concat =>{"concat", COMMON, AtLeast(1), {
    let mut result = take_arg!(self, func, (String(Lit(x))) => x).value;
    for _ in 1..func.len {
      result.push_str(&take_arg!(self, func, (String(Lit(x))) => x).value);
    }
    Ok(Json::String(Lit(result)))
  }},
  len =>{"len", COMMON, Exactly(1), {
    take_len_c_a_d(Rax, func, _scope)?;
    Ok(Json::Int(Var(_scope.mov_tmp(Rax)?)))
  }}
}