shelly-shell 0.2.0

A Rust based Unix style shell with a typed and structured language syntax.
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use std::{ cell::RefCell, collections::HashMap, rc::Rc };

use super::{ data::value::Value, text::location::Location };



pub enum Code
{
    Push,
    Execute,
    // Pop a command name; leave its result, or the unresolved string, in last_result.
    TryExecute,
    // Execute last_result only when it is a string marked executable; preserve other values.
    ExecuteIfExecutable,
    MakeExecutable,
    ExitFunction,
    NewVariable,
    SetVariable,
    GetVariable,
    PushResult,
    PopResult,
    CheckResult,
    NewAlias,
    ExportVariable,
    GlobFiles,
    ExpandArray,
    ExpandPath,
    InterpolateString,
    InterpolateGlob,
    _EnterScope,
    _ExitScope,
    MathAdd,
    MathSubtract,
    MathMultiply,
    MathDivide,
    MathModulo
}


pub struct Instruction
{
    pub location: Option<Location>,
    pub code: Code,
    pub operand: Option<Value>
}


pub struct Function
{
    pub functions: FunctionBlockRef,

    pub arguments: Vec<String>,
    pub code: Vec<Instruction>
}


pub struct FunctionBlock
{
    pub parent: Option<FunctionBlockRef>,
    pub functions: HashMap<String, FunctionRef>
}


pub type FunctionBlockRef = Rc<RefCell<FunctionBlock>>;

pub type FunctionRef = Rc<Function>;