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//! This module defines various `WordEval` implementations on AST types defined by
//! the `conch-parser` crate.

use conch_parser::ast;
use eval::{RedirectOrCmdWord, RedirectOrVarAssig};

mod arith;
mod complex_word;
mod parameter;
mod param_subst;
mod redirect;
mod simple_word;
mod word;

pub use self::complex_word::ComplexWord;
pub use self::param_subst::ParameterSubstitution;
pub use self::simple_word::SimpleWord;
pub use self::word::Word;

impl<R, W> From<ast::RedirectOrCmdWord<R, W>> for RedirectOrCmdWord<R, W> {
    fn from(from: ast::RedirectOrCmdWord<R, W>) -> Self {
        match from {
            ast::RedirectOrCmdWord::Redirect(r) => RedirectOrCmdWord::Redirect(r),
            ast::RedirectOrCmdWord::CmdWord(w) => RedirectOrCmdWord::CmdWord(w),
        }
    }
}

impl<R, V, W> From<ast::RedirectOrEnvVar<R, V, W>> for RedirectOrVarAssig<R, V, W> {
    fn from(from: ast::RedirectOrEnvVar<R, V, W>) -> Self {
        match from {
            ast::RedirectOrEnvVar::Redirect(r) => RedirectOrVarAssig::Redirect(r),
            ast::RedirectOrEnvVar::EnvVar(k, v) => RedirectOrVarAssig::VarAssig(k, v),
        }
    }
}