mirror of https://github.com/rm-dr/daisy
Moved functions to main.rs
parent
5093015dd2
commit
558b914e5f
GPG Key ID:
AD62BB059C2AAEE4
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@ -6,277 +6,23 @@ use std::env;
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use termion::{
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event::Key,
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input::TermRead,
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raw::IntoRawMode,
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raw::RawTerminal,
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color,
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style,
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raw::IntoRawMode
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};
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use super::promptbuffer::PromptBuffer;
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use crate::errors::DaisyError;
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use crate::formattedtext::FormattedText;
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use crate::parser;
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use crate::command;
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use crate::evaluate;
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use crate::context::Context;
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use crate::parser::LineLocation;
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use crate::parser::substitute;
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#[inline(always)]
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fn do_expression(
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stdout: &mut RawTerminal<std::io::Stdout>,
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s: &String,
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context: &mut Context
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) -> Result<parser::Expression, (LineLocation, DaisyError)> {
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// Parse string
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/*
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Make this a macro:
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#[cfg(debug_assertions)]
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RawTerminal::suspend_raw_mode(&stdout).unwrap();
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let g = parser::parse(&s, context)?;
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code
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#[cfg(debug_assertions)]
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RawTerminal::activate_raw_mode(&stdout).unwrap();
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// Evaluate expression
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#[cfg(debug_assertions)]
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RawTerminal::suspend_raw_mode(&stdout).unwrap();
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let g_evaluated = evaluate::evaluate(&g, context)?;
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#[cfg(debug_assertions)]
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RawTerminal::activate_raw_mode(&stdout).unwrap();
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// Display parsed string
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write!(
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stdout, " {}{}=>{}{} {}\r\n",
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style::Bold, color::Fg(color::Magenta),
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style::Reset, color::Fg(color::Reset),
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g.to_string()
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).unwrap();
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// Display result
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write!(
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stdout, "\n {}{}={} {}{}\r\n\n",
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style::Bold,
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color::Fg(color::Green),
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style::Reset,
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g_evaluated.to_string_outer(),
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color::Fg(color::Reset)
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).unwrap();
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return Ok(g_evaluated);
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}
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#[inline(always)]
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fn do_assignment(
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stdout: &mut RawTerminal<std::io::Stdout>,
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s: &String,
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context: &mut Context
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) -> Result<(), (LineLocation, DaisyError)> {
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let parts = s.split("=").collect::<Vec<&str>>();
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if parts.len() != 2 {
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return Err((
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LineLocation::new_zero(),
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DaisyError::Syntax
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));
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}
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// Index of first non-whitespace character in left
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// (relative to whole prompt)
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let starting_left = parts[0]
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.char_indices()
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.find(|(_, ch)| !(ch.is_whitespace() && *ch != '\n'))
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.map(|(i, _)| i)
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.unwrap_or_else(|| parts[0].len());
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// Index of first non-whitespace character in right
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// (relative to whole prompt)
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// +1 accounts for equals sign
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let starting_right = parts[0].chars().count() + 1 +
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parts[1]
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.char_indices()
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.find(|(_, ch)| !(ch.is_whitespace() && *ch != '\n'))
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.map(|(i, _)| i)
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.unwrap_or_else(|| parts[0].len());
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let left = parts[0].trim().to_string();
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let right = parts[1].trim().to_string();
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let right = substitute(&right, &context);
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let left = substitute(&left, &context);
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let is_function = left.contains("(");
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if is_function {
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let mut mode = 0;
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let mut name = String::new();
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let mut args = String::new();
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for c in left.chars() {
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match mode {
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// Mode 0: reading function name
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0 => {
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if c == '(' {
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mode = 1; continue;
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} else { name.push(c); }
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},
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// Mode 1: reading arguments
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1 => {
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if c == ')' {
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mode = 2; continue;
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} else { args.push(c); }
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},
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// Mode 2: we should be done by now.
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// That close paren should've been the last character.
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2 => {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
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DaisyError::Syntax
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));
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},
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_ => unreachable!()
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}
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}
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let args = args
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.split(",").collect::<Vec<&str>>()
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.iter().map(|x| x.trim().to_string()).collect::<Vec<String>>();
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if name.len() == 0 {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
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DaisyError::Syntax
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));
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};
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if !context.valid_function(&name) {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
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DaisyError::BadFunction
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));
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};
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if args.iter().find(|x| &x[..] == "").is_some() {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
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DaisyError::Syntax
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));
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};
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for a in &args {
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if !context.valid_varible(a) {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
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DaisyError::BadVariable
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));
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}
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}
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// Parse right hand side
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#[cfg(debug_assertions)]
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RawTerminal::suspend_raw_mode(&stdout).unwrap();
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let g = parser::parse(&right, context);
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#[cfg(debug_assertions)]
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RawTerminal::activate_raw_mode(&stdout).unwrap();
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let Ok(g) = g else {
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let Err((l, e)) = g else { unreachable!() };
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return Err((
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LineLocation{ pos: l.pos + starting_right, len: l.len},
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e
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));
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};
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// Display parsed string
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write!(
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stdout, " {}{}=>{}{} {left} = {}\r\n\n",
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style::Bold, color::Fg(color::Magenta),
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style::Reset, color::Fg(color::Reset),
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g.to_string()
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).unwrap();
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for a in &args {
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context.add_shadow(a.to_string(), None);
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}
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// Evaluate expression
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#[cfg(debug_assertions)]
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RawTerminal::suspend_raw_mode(&stdout).unwrap();
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let g_evaluated = evaluate::evaluate(&g, context);
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#[cfg(debug_assertions)]
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RawTerminal::activate_raw_mode(&stdout).unwrap();
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context.clear_shadow();
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let Ok(g_evaluated) = g_evaluated else {
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let Err((l, e)) = g_evaluated else { unreachable!() };
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return Err((
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LineLocation{ pos: l.pos + starting_right, len: l.len},
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e
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));
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};
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context.push_function(name, args, g_evaluated).unwrap();
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} else {
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if !context.valid_varible(&left) {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
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DaisyError::BadVariable
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));
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}
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// Parse right hand side
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#[cfg(debug_assertions)]
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RawTerminal::suspend_raw_mode(&stdout).unwrap();
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let g = parser::parse(&right, context);
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#[cfg(debug_assertions)]
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RawTerminal::activate_raw_mode(&stdout).unwrap();
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let Ok(g) = g else {
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let Err((l, e)) = g else { unreachable!() };
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return Err((
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LineLocation{ pos: l.pos + starting_right, len: l.len},
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e
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));
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};
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// Display parsed string
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write!(
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stdout, " {}{}=>{}{} {left} = {}\r\n\n",
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style::Bold, color::Fg(color::Magenta),
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style::Reset, color::Fg(color::Reset),
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g.to_string()
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).unwrap();
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// Evaluate expression
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#[cfg(debug_assertions)]
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RawTerminal::suspend_raw_mode(&stdout).unwrap();
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let g_evaluated = evaluate::evaluate(&g, context);
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#[cfg(debug_assertions)]
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RawTerminal::activate_raw_mode(&stdout).unwrap();
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let Ok(g_evaluated) = g_evaluated else {
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let Err((l, e)) = g_evaluated else { unreachable!() };
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return Err((
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LineLocation{ pos: l.pos + starting_right, len: l.len},
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e
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));
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};
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context.push_variable(left.to_string(), g_evaluated).unwrap();
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}
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return Ok(());
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}
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*/
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#[inline(always)]
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@ -321,47 +67,13 @@ pub fn main() -> Result<(), std::io::Error> {
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if in_str.trim() == "quit" {
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break 'outer;
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} else if command::is_command(&in_str) {
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let t = command::do_command(&in_str, &mut context);
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t.write(&mut stdout)?;
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} else if in_str.contains("=") {
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let r = do_assignment(&mut stdout, &in_str, &mut context);
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if let Err((l, e)) = r {
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let t = FormattedText::new(
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format!(
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concat!(
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"{}[e]{}[n]\n",
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" {}\n"
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),
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" ".repeat(l.pos + 4),
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"^".repeat(l.len),
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e.text().to_string(),
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)
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);
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} else {
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let r = crate::do_string(&in_str, &mut context);
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match r {
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Ok(t) | Err(t) => {
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t.write(&mut stdout).unwrap();
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}
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} else {
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let r = do_expression(&mut stdout, &in_str, &mut context);
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if let Ok(t) = r {
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context.push_hist(t);
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} else {
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let Err((l, e)) = r else { unreachable!() };
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let t = FormattedText::new(
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format!(
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concat!(
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"{}[e]{}[n]\n",
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" {}\n"
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),
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" ".repeat(l.pos + 4),
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"^".repeat(l.len),
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e.text().to_string(),
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)
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);
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t.write(&mut stdout).unwrap();
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}
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}
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267
src/main.rs
267
src/main.rs
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@ -9,10 +9,273 @@ pub mod formattedtext;
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mod entry;
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use crate::entry::main_e;
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use crate::parser::substitute;
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use crate::errors::DaisyError;
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use crate::formattedtext::FormattedText;
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use crate::context::Context;
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use crate::parser::LineLocation;
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#[cfg(test)]
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mod tests;
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fn main() -> Result<(), std::io::Error> {
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return main_e();
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}
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#[inline(always)]
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pub fn do_string(
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s: &String,
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mut context: &mut Context
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) -> Result<FormattedText, FormattedText> {
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let r: (LineLocation, DaisyError);
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if command::is_command(s) {
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return Ok(command::do_command(s, &mut context));
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} else if s.contains("=") {
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let x = do_assignment(s, &mut context);
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match x {
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Ok(t) => { return Ok(t) },
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Err(t) => { r = t }
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};
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} else {
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let x = do_expression(s, &mut context);
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match x {
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Ok((t, e)) => { context.push_hist(e); return Ok(t) },
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Err(t) => { r = t }
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};
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}
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let (l, e) = r;
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let t = FormattedText::new(
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format!(
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concat!(
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"{}[e]{}[n]\n",
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" {}\n"
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),
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" ".repeat(l.pos + 4),
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"^".repeat(l.len),
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e.text().to_string(),
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)
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);
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return Err(t);
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}
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// Handle a simple evaluation string.
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// Returns a FormattedText with output that should be printed.
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#[inline(always)]
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fn do_expression(
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s: &String,
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context: &mut Context
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) -> Result<(FormattedText, parser::Expression), (LineLocation, DaisyError)> {
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let mut output = FormattedText::new("".to_string());
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let g = parser::parse(&s, context)?;
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let g_evaluated = evaluate::evaluate(&g, context)?;
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// Display parsed string
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output.push(&format!(
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" [s]=>[n] {}\n\n",
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g.to_string()
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));
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// Display result
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output.push(&format!(
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" [r]=[n] {}\n\n",
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g_evaluated.to_string_outer(),
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));
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return Ok((output, g_evaluated));
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}
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// Handle a variable or function definition string.
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// Returns a FormattedText with output that should be printed.
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#[inline(always)]
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fn do_assignment(
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s: &String,
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context: &mut Context
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) -> Result<FormattedText, (LineLocation, DaisyError)> {
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let mut output = FormattedText::new("".to_string());
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let parts = s.split("=").collect::<Vec<&str>>();
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if parts.len() != 2 {
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return Err((
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LineLocation::new_zero(),
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DaisyError::Syntax
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));
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}
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// Index of first non-whitespace character in left
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// (relative to whole prompt)
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let starting_left = parts[0]
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.char_indices()
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.find(|(_, ch)| !(ch.is_whitespace() && *ch != '\n'))
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.map(|(i, _)| i)
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.unwrap_or_else(|| parts[0].len());
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// Index of first non-whitespace character in right
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// (relative to whole prompt)
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// +1 accounts for equals sign
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let starting_right = parts[0].chars().count() + 1 +
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parts[1]
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.char_indices()
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.find(|(_, ch)| !(ch.is_whitespace() && *ch != '\n'))
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.map(|(i, _)| i)
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.unwrap_or_else(|| parts[0].len());
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let left = substitute(&parts[0].trim().to_string(), &context);
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let right = substitute(&parts[1].trim().to_string(), &context);
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let is_function = left.contains("(");
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// The order of methods below is a bit odd.
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// This is intentional, since we want to check a definition's
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// variable name before even attempting to parse its content.
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if is_function {
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let mut mode = 0;
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let mut name = String::new();
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let mut args = String::new();
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for c in left.chars() {
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match mode {
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// Mode 0: reading function name
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0 => {
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if c == '(' {
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mode = 1; continue;
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} else { name.push(c); }
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},
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// Mode 1: reading arguments
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1 => {
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if c == ')' {
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mode = 2; continue;
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} else { args.push(c); }
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},
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// Mode 2: we should be done by now.
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// That close paren should've been the last character.
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2 => {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
|
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DaisyError::Syntax
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));
|
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},
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_ => unreachable!()
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}
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}
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let args = args
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.split(",").collect::<Vec<&str>>()
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.iter().map(|x| x.trim().to_string()).collect::<Vec<String>>();
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|
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if name.len() == 0 {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
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DaisyError::Syntax
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));
|
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};
|
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|
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if !context.valid_function(&name) {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
|
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DaisyError::BadFunction
|
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));
|
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};
|
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|
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if args.iter().find(|x| &x[..] == "").is_some() {
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return Err((
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LineLocation{ pos: starting_left, len: left.chars().count() },
|
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DaisyError::Syntax
|
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));
|
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};
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for a in &args {
|
||||
if !context.valid_varible(a) {
|
||||
return Err((
|
||||
LineLocation{ pos: starting_left, len: left.chars().count() },
|
||||
DaisyError::BadVariable
|
||||
));
|
||||
}
|
||||
}
|
||||
|
||||
// Parse right hand side
|
||||
let g = parser::parse(&right, context);
|
||||
let Ok(g) = g else {
|
||||
let Err((l, e)) = g else { unreachable!() };
|
||||
return Err((
|
||||
LineLocation{ pos: l.pos + starting_right, len: l.len},
|
||||
e
|
||||
));
|
||||
};
|
||||
|
||||
// Display parsed string
|
||||
output.push(&format!(
|
||||
" [s]=>[n] {left} = {}\n\n",
|
||||
g.to_string()
|
||||
));
|
||||
|
||||
// Evaluate expression with shadow variables
|
||||
for a in &args { context.add_shadow(a.to_string(), None);}
|
||||
let g_evaluated = evaluate::evaluate(&g, context);
|
||||
context.clear_shadow();
|
||||
let Ok(_g_evaluated) = g_evaluated else {
|
||||
let Err((l, e)) = g_evaluated else { unreachable!() };
|
||||
return Err((
|
||||
LineLocation{ pos: l.pos + starting_right, len: l.len},
|
||||
e
|
||||
));
|
||||
};
|
||||
|
||||
// We could push g_evaluated instead, but an un-evaluated string
|
||||
// makes the 'vars' command prettier.
|
||||
//
|
||||
// We still need to evaluate g above, though, to make sure it works.
|
||||
context.push_function(name, args, g).unwrap();
|
||||
} else {
|
||||
|
||||
if !context.valid_varible(&left) {
|
||||
return Err((
|
||||
LineLocation{ pos: starting_left, len: left.chars().count() },
|
||||
DaisyError::BadVariable
|
||||
));
|
||||
}
|
||||
|
||||
// Parse right hand side
|
||||
let g = parser::parse(&right, context);
|
||||
let Ok(g) = g else {
|
||||
let Err((l, e)) = g else { unreachable!() };
|
||||
return Err((
|
||||
LineLocation{ pos: l.pos + starting_right, len: l.len},
|
||||
e
|
||||
));
|
||||
};
|
||||
|
||||
// Display parsed string
|
||||
output.push(&format!(
|
||||
" [t]=>[n] {left} = {}\n\n",
|
||||
g.to_string()
|
||||
));
|
||||
|
||||
// Evaluate expression
|
||||
let g_evaluated = evaluate::evaluate(&g, context);
|
||||
let Ok(g_evaluated) = g_evaluated else {
|
||||
let Err((l, e)) = g_evaluated else { unreachable!() };
|
||||
return Err((
|
||||
LineLocation{ pos: l.pos + starting_right, len: l.len},
|
||||
e
|
||||
));
|
||||
};
|
||||
|
||||
context.push_variable(left.to_string(), g_evaluated).unwrap();
|
||||
}
|
||||
|
||||
return Ok(output);
|
||||
|
||||
}
|
||||
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests;
|
||||
Loading…
Reference in New Issue