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#![forbid(unsafe_code)]
use crate::{
interfaces::{LeftScreen, RightScreen},
tui::{
text_builder::TextBuilder,
tui_interface::{TUIInterface, TUIOutput},
},
};
use tui::{
style::{Color, Style},
text::Spans,
};
#[derive(Debug, Clone)]
pub struct Viewer<BytecodeViewer: LeftScreen, SourceViewer: RightScreen<BytecodeViewer>> {
bytecode_text: Vec<String>,
source_viewer: SourceViewer,
bytecode_viewer: BytecodeViewer,
}
impl<BytecodeViewer: LeftScreen, SourceViewer: RightScreen<BytecodeViewer>>
Viewer<BytecodeViewer, SourceViewer>
{
pub fn new(source_viewer: SourceViewer, bytecode_viewer: BytecodeViewer) -> Self {
Self {
bytecode_text: bytecode_viewer
.backing_string()
.split('\n')
.map(|x| x.to_string())
.collect(),
source_viewer,
bytecode_viewer,
}
}
}
impl<BytecodeViewer: LeftScreen, SourceViewer: RightScreen<BytecodeViewer>> TUIInterface
for Viewer<BytecodeViewer, SourceViewer>
{
const LEFT_TITLE: &'static str = "Bytecode";
const RIGHT_TITLE: &'static str = "Source Code";
fn on_redraw(&mut self, line_number: u16, column_number: u16) -> TUIOutput {
let style: Style = Style::default().bg(Color::Red);
let report = match self
.bytecode_viewer
.get_source_index_for_line(line_number as usize, column_number as usize)
{
None => {
let mut builder = TextBuilder::new();
builder.add(self.source_viewer.backing_string(), Style::default());
builder.finish()
}
Some(info) => {
let source_context = self.source_viewer.source_for_code_location(info).unwrap();
let mut builder = TextBuilder::new();
builder.add(source_context.left, Style::default());
builder.add(source_context.highlight, style);
builder.add(source_context.remainder, Style::default());
builder.finish()
}
};
TUIOutput {
left_screen: self
.bytecode_text
.iter()
.map(|x| Spans::from(x.clone()))
.collect(),
right_screen: report,
}
}
fn bound_line(&self, line_number: u16) -> u16 {
std::cmp::min(
line_number,
self.bytecode_text.len().checked_sub(1).unwrap() as u16,
)
}
fn bound_column(&self, line_number: u16, column_number: u16) -> u16 {
std::cmp::min(
column_number,
self.bytecode_text[line_number as usize].len() as u16,
)
}
}