terms module design

src/bin/ccc/mod.rs

@@ -1,6 +1,6 @@
 //! # Executable for the math/compute submodule
 //!
-//! Compute computations with your computer!
+//! Calculate Calculations with your Computer!
 //!
 //! This command line tool allows you to input a mathematical expression. It will then process the
 //! expression.
@@ -15,7 +15,7 @@
 #![warn(clippy::pedantic)]
 
 //// IMPORTS ///////////////////////////////////////////////////////////////////////////////////////
-use pt::math::computer::{*, self};
+use pt::math::calculator::{*, self};
 use pt::logger::*;
 
 use clap::{Parser, Subcommand};
@@ -29,7 +29,7 @@ use std::path::PathBuf;
 //// CONSTANTS /////////////////////////////////////////////////////////////////////////////////////
 /// short about section displayed in help
 const ABOUT_ROOT: &'static str = r##"
-Compute computations with your computer
+Calculate Calculations with your Computer
 
     This commandline tool allows you to calculate complex mathematical expressions right in your
     shell.
@@ -128,7 +128,7 @@ fn main() {
     }
 
     debug!("exporssion: {}", expr);
-    let r = Computer::oneshot(expr);
+    let r = Calculator::oneshot(expr);
     println!("{}", r.unwrap());
 }
 ////////////////////////////////////////////////////////////////////////////////////////////////////

src/math/calculator/mod.rs

@@ -1,8 +1,8 @@
-//! # Compute expressions
+//! # Calculate expressions
 //!
-//! Compute computations with your computer (`ccc`)
+//! Calculate Calculations with your Calculator (`ccc`)
 //!
-//! This modules aim is to take a term of any kind ([String]) and compute it's value, be it
+//! This modules aim is to take a term of any kind ([String]) and calculate it's value, be it
 //! variable based or a concrete numerical value. It implements different operators and
 //! (mathematical) functions.
 
@@ -17,8 +17,11 @@
 
 //// IMPORTS ///////////////////////////////////////////////////////////////////////////////////////
 pub mod result;
-pub use result::{Error, Result, ComputeResult};
+pub use result::{Error, Result, CalculateResult};
+pub mod term;
+pub use term::*;
 
+#[allow(unused_imports)]    // we possibly want to use all log levels
 use crate::logger::{trace, debug, info, warn, error};
 
 //// TYPES /////////////////////////////////////////////////////////////////////////////////////////
@@ -30,87 +33,42 @@ use crate::logger::{trace, debug, info, warn, error};
 //// MACROS ////////////////////////////////////////////////////////////////////////////////////////
 
 //// ENUMS /////////////////////////////////////////////////////////////////////////////////////////
-// #[non_exhaustive]
-// #[derive(Debug)]
-// pub enum Constants {
-//     Pi
-// }
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-#[non_exhaustive]
-#[derive(Debug)]
-/// ## Supported Operations
-///
-/// This `enum` contains all operations supported in this module.
-pub enum Operations {
-    /// Mathmatical addition
-    Addition,
-    /// Mathmatical subtraction
-    Subtraction,
-    /// Mathmatical multiplication
-    Multiplication,
-    /// Mathmatical division
-    Division,
-    /// Mathmatical modulo, finite field arithmetic
-    Modulo,
-    /// Draw the mathmatical root, attribute n is the nth root
-    Root(u16),
-    /// round up
-    Floor,
-    /// round down
-    Ceil,
-    /// round to nearest integer
-    /// (commercial rounding)
-    Round
-}
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-#[non_exhaustive]
-pub enum Functions {
-    Root
-}
 
 //// STRUCTS ///////////////////////////////////////////////////////////////////////////////////////
-pub struct Computer;
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-#[derive(Debug)]
-pub struct Term {
-    original: String,
-    result: Option<ComputeResult>,
-    parts: Vec<String>
-}
+/// ## A Calculator struct
+///
+/// This struct does not do anything at the moment, but aims to be the target for high level
+/// control. Instead of using the [`Calculator`], you could just use the [`Term`] struct for
+/// lower level control.
+pub struct Calculator;
 
 //// IMPLEMENTATION ////////////////////////////////////////////////////////////////////////////////
-impl Computer {
-    pub fn oneshot(t: String) -> Result<ComputeResult> {
+impl Calculator {
+    /// Do a single calculation without doing anything else
+    pub fn oneshot(t: String) -> Result<CalculateResult> {
         trace!(orig=t, "parsing original string to Term");
-        let mut t = Term::new(t);
-        trace!("term has been parsed, starting computation");
+        let t = Term::new(t)?;
+        trace!("term has been parsed, starting Calculation");
         debug!("parsed term: {t:#?}");
-        Self::compute(t)
+        Self::calc(t)
     }
 
-    /// ## compute a [`Term`]
+    /// ## Calculate a [`Term`]
     ///
     /// This method makes use of the
     /// [shunting yard algorithm](https://en.wikipedia.org/wiki/Shunting_yard_algorithm) to
-    /// compute the final value of any term.
+    /// Calculate the final value of any term.
     ///
     /// This method only processes a single term at a time, without caching.
-    pub fn compute(mut t: Term) -> Result<ComputeResult> {
-        trace!("computing term {t:?}");
-        return Ok(ComputeResult::from(0))
-    }
-}
-
-impl Term {
-    pub fn new(orig: String) -> Self {
-        Term {
-            original: orig,
-            result: None,
-            parts: Vec::new()
+    pub fn calc(mut t: Term) -> Result<CalculateResult> {
+        trace!("Calculating term {t:?}");
+        t.prepare();
+        t.process();
+        if t.result.is_none() {
+            error!("Term was processed but no result was assigned.");
+            return Err(Error::SyntaxError)
         }
+        return Ok(t.result.unwrap())
     }
 }
 

src/math/calculator/result.rs

@@ -1,4 +1,4 @@
-//! # Results and Errors for the compute module
+//! # Results and Errors for the calculate module
 //!
 //! This module defines the errors and results that can be processed from any given term.
 
@@ -33,7 +33,7 @@ pub enum Error {
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 #[derive(Debug)]
-pub enum ComputeResult {
+pub enum CalculateResult {
     Variable(VarResult),
     Numerical(NumericResult),
     Complex(ComplexResult),
@@ -78,7 +78,7 @@ impl<T: num_traits::PrimInt> From<T> for NumericResult where
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-impl<T: num_traits::PrimInt> From<T> for ComputeResult where
+impl<T: num_traits::PrimInt> From<T> for CalculateResult where
     u128: TryFrom<T>,
     u128: TryFrom<T> {
     fn from(value: T) -> Self {
@@ -87,23 +87,23 @@ impl<T: num_traits::PrimInt> From<T> for ComputeResult where
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-impl From<NumericResult> for ComputeResult {
+impl From<NumericResult> for CalculateResult {
     fn from(value: NumericResult) -> Self {
-        ComputeResult::Numerical(value)
+        CalculateResult::Numerical(value)
     }
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
-impl Display for ComputeResult {
+impl Display for CalculateResult {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            ComputeResult::Numerical(val) => {
+            CalculateResult::Numerical(val) => {
                 write!(f, "{}", val)
             }
-            ComputeResult::Complex(val) => {
+            CalculateResult::Complex(val) => {
                 write!(f, "{}", val)
             }
-            ComputeResult::Variable(val) => {
+            CalculateResult::Variable(val) => {
                 write!(f, "{}", val)
             }
         }

src/math/calculator/term.rs

@@ -0,0 +1,144 @@
+//! # A term that can be the input for calculation
+//!
+//! Short description
+//!
+//! Details
+//!
+//! ## Section 1
+//!
+//! ## Section 2
+
+//// ATTRIBUTES ////////////////////////////////////////////////////////////////////////////////////
+// we want docs
+#![warn(missing_docs)]
+#![warn(rustdoc::missing_crate_level_docs)]
+// we want Debug everywhere.
+#![warn(missing_debug_implementations)]
+// enable clippy's extra lints, the pedantic version
+#![warn(clippy::pedantic)]
+
+use std::collections::VecDeque;
+
+//// IMPORTS ///////////////////////////////////////////////////////////////////////////////////////
+pub use super::{Error, Result, CalculateResult};
+
+//// TYPES /////////////////////////////////////////////////////////////////////////////////////////
+
+//// CONSTANTS /////////////////////////////////////////////////////////////////////////////////////
+
+//// STATICS ///////////////////////////////////////////////////////////////////////////////////////
+
+//// MACROS ////////////////////////////////////////////////////////////////////////////////////////
+
+//// ENUMS /////////////////////////////////////////////////////////////////////////////////////////
+/// ## Supported Operations
+///
+/// This `enum` contains all operations supported in this module.
+#[non_exhaustive]
+#[derive(Debug)]
+pub enum Operator {
+    /// Mathmatical addition
+    Addition,
+    /// Mathmatical subtraction
+    Subtraction,
+    /// Mathmatical multiplication
+    Multiplication,
+    /// Mathmatical division
+    Division,
+    /// Mathmatical modulo, finite field arithmetic
+    Modulo,
+    /// Any function, seel [`Function`]
+    Function(Function)
+
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// ## Supported Functions
+///
+/// This `enum` contains all functions supported in this module.
+///
+/// A function has a name followed by braces directly afterwards.
+/// A function may have 0 to 31 Arguments.
+///
+/// Example: `sqrt(19)`, `floor(19.9)`
+#[non_exhaustive]
+#[derive(Debug)]
+pub enum Function {
+    /// Draw the mathmatical root, attribute n is the nth root
+    Root(u16),
+    /// round up
+    Floor,
+    /// round down
+    Ceil,
+    /// round to nearest integer
+    /// (commercial rounding)
+    Round,
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+/// ## Parsed value to be calculated
+///
+/// This enum represents anything that goes to the output queue of [`Term::prepare()`] and will
+/// then be used to actually calculate something in [`Term::process()`].
+#[derive(Debug)]
+enum Token {
+    /// Some kind of operator
+    Operator(Operator),
+    /// A concrete value that we can calculate something with. May be a constant, integer, float,
+    /// etc.
+    Value(),
+    /// A variable of some kind that will be present in the result
+    Variable(char),
+}
+//// STRUCTS ///////////////////////////////////////////////////////////////////////////////////////
+/// ## Term that can be calculated
+///
+/// Represents a signular term, that can be calculated. Terms will be evaluated by the [`Term::prepare`]
+/// function, afterwards calculated (as much as possible) in the [`Term::process`] function.
+///
+#[derive(Debug)]
+pub struct Term {
+    /// the original expression to calculate
+    pub original: String,
+    /// the calculated result, may be of diffrent types, see [`crate::math::calculator::result`].
+    pub result: Option<CalculateResult>,
+    /////////////////////////////////////
+    ///// internal values following /////
+    /////////////////////////////////////
+    operator_stack: Vec<Operator>,
+    output_queue: VecDeque<Token>
+}
+
+//// IMPLEMENTATION ////////////////////////////////////////////////////////////////////////////////
+impl Term {
+    /// Build a new term from an expression
+    ///
+    /// Invalid terms will result in an [`Err`].
+    pub fn new(orig: String) -> Result<Term> {
+        return Ok(
+            Term {
+                original: orig,
+                result: None,
+                operator_stack: Vec::new(),
+                output_queue: VecDeque::new()
+            }
+        )
+    }
+
+    /// Prepare the term for the processing.
+    pub fn prepare(&mut self) {
+        // TODO: shunting yard
+    }
+
+    pub fn process(&mut self) {
+        // TODO: process RPN and set result
+        self.result = Some(CalculateResult::Numerical(19.into()))
+    }
+}
+
+
+//// PUBLIC FUNCTIONS //////////////////////////////////////////////////////////////////////////////
+
+//// PRIVATE FUNCTIONS /////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////////////////////////

src/math/computer/term.rs

@@ -1,40 +0,0 @@
-//! # A term that can be the input for computation
-//!
-//! Short description
-//!
-//! Details
-//!
-//! ## Section 1
-//!
-//! ## Section 2
-
-//// ATTRIBUTES ////////////////////////////////////////////////////////////////////////////////////
-// we want docs
-#![warn(missing_docs)]
-#![warn(rustdoc::missing_crate_level_docs)]
-// we want Debug everywhere.
-#![warn(missing_debug_implementations)]
-// enable clippy's extra lints, the pedantic version
-#![warn(clippy::pedantic)]
-
-//// IMPORTS ///////////////////////////////////////////////////////////////////////////////////////
-
-//// TYPES /////////////////////////////////////////////////////////////////////////////////////////
-
-//// CONSTANTS /////////////////////////////////////////////////////////////////////////////////////
-
-//// STATICS ///////////////////////////////////////////////////////////////////////////////////////
-
-//// MACROS ////////////////////////////////////////////////////////////////////////////////////////
-
-//// ENUMS /////////////////////////////////////////////////////////////////////////////////////////
-
-//// STRUCTS ///////////////////////////////////////////////////////////////////////////////////////
-
-//// IMPLEMENTATION ////////////////////////////////////////////////////////////////////////////////
-
-//// PUBLIC FUNCTIONS //////////////////////////////////////////////////////////////////////////////
-
-//// PRIVATE FUNCTIONS /////////////////////////////////////////////////////////////////////////////
-
-////////////////////////////////////////////////////////////////////////////////////////////////////

src/math/mod.rs

@@ -18,7 +18,7 @@
 #![warn(clippy::pedantic)]
 
 //// IMPORTS ///////////////////////////////////////////////////////////////////////////////////////
-pub mod computer;
+pub mod calculator;
 
 //// TYPES /////////////////////////////////////////////////////////////////////////////////////////