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use std::cell::RefCell;
use std::str::FromStr;
use std::rc::Rc;
use super::{StoreConst, Store, StoreOption, List, Collect, PushConst};
use super::action::Action;
use super::action::{TypedAction, IFlagAction, IArgAction, IArgsAction};
use super::action::ParseResult;
use super::action::ParseResult::{Parsed, Error};
use super::action::Action::{Flag, Single, Push, Many};
pub struct StoreConstAction<'a, T: 'a> {
pub value: T,
pub cell: Rc<RefCell<&'a mut T>>,
}
pub struct PushConstAction<'a, T: 'a> {
pub value: T,
pub cell: Rc<RefCell<&'a mut Vec<T>>>,
}
pub struct StoreAction<'a, T: 'a> {
pub cell: Rc<RefCell<&'a mut T>>,
}
pub struct StoreOptionAction<'a, T: 'a> {
cell: Rc<RefCell<&'a mut Option<T>>>,
}
pub struct ListAction<'a, T: 'a> {
cell: Rc<RefCell<&'a mut Vec<T>>>,
}
impl<T: 'static + Clone> TypedAction<T> for StoreConst<T> {
fn bind<'x>(&self, cell: Rc<RefCell<&'x mut T>>) -> Action<'x> {
let StoreConst(ref val) = *self;
return Flag(Box::new(StoreConstAction { cell: cell, value: val.clone() }));
}
}
impl<T: 'static + Clone> TypedAction<Vec<T>> for PushConst<T> {
fn bind<'x>(&self, cell: Rc<RefCell<&'x mut Vec<T>>>) -> Action<'x> {
let PushConst(ref val) = *self;
return Flag(Box::new(PushConstAction { cell: cell, value: val.clone() }));
}
}
impl<T: 'static + FromStr> TypedAction<T> for Store {
fn bind<'x>(&self, cell: Rc<RefCell<&'x mut T>>) -> Action<'x> {
return Single(Box::new(StoreAction { cell: cell }));
}
}
impl<T: 'static + FromStr> TypedAction<Option<T>> for StoreOption {
fn bind<'x>(&self, cell: Rc<RefCell<&'x mut Option<T>>>) -> Action<'x> {
return Single(Box::new(StoreOptionAction { cell: cell }));
}
}
impl<T: 'static + FromStr + Clone> TypedAction<Vec<T>> for List {
fn bind<'x>(&self, cell: Rc<RefCell<&'x mut Vec<T>>>) -> Action<'x> {
return Many(Box::new(ListAction { cell: cell }));
}
}
impl<T: 'static + FromStr + Clone> TypedAction<Vec<T>> for Collect {
fn bind<'x>(&self, cell: Rc<RefCell<&'x mut Vec<T>>>) -> Action<'x> {
return Push(Box::new(ListAction { cell: cell }));
}
}
impl<'a, T: Clone> IFlagAction for StoreConstAction<'a, T> {
fn parse_flag(&self) -> ParseResult {
let mut targ = self.cell.borrow_mut();
**targ = self.value.clone();
return Parsed;
}
}
impl<'a, T: Clone> IFlagAction for PushConstAction<'a, T> {
fn parse_flag(&self) -> ParseResult {
let mut targ = self.cell.borrow_mut();
targ.push(self.value.clone());
return Parsed;
}
}
impl<'a, T: FromStr> IArgAction for StoreAction<'a, T> {
fn parse_arg(&self, arg: &str) -> ParseResult {
match FromStr::from_str(arg) {
Ok(x) => {
**self.cell.borrow_mut() = x;
return Parsed;
}
Err(_) => {
return Error(format!("Bad value {}", arg));
}
}
}
}
impl<'a, T: FromStr> IArgAction for StoreOptionAction<'a, T> {
fn parse_arg(&self, arg: &str) -> ParseResult {
match FromStr::from_str(arg) {
Ok(x) => {
**self.cell.borrow_mut() = Some(x);
return Parsed;
}
Err(_) => {
return Error(format!("Bad value {}", arg));
}
}
}
}
impl<'a, T: FromStr + Clone> IArgsAction for ListAction<'a, T> {
fn parse_args(&self, args: &[&str]) -> ParseResult {
let mut result = vec!();
for arg in args.iter() {
match FromStr::from_str(*arg) {
Ok(x) => {
result.push(x);
}
Err(_) => {
return Error(format!("Bad value {}", arg));
}
}
}
**self.cell.borrow_mut() = result;
return Parsed;
}
}
|
