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use crate::{
config::{
adapter::{BreakpointKind, BreakpointPositionInLine},
Config,
},
parser::{
command::{argument::MinecraftEntityAnchor, resource_location::ResourceLocation},
Line,
},
};
use std::{collections::BTreeSet, fmt::Display, str::FromStr};
pub(crate) struct Partition<'l> {
pub(crate) start: Position,
pub(crate) end: Position,
pub(crate) regular_lines: &'l [(usize, String, Line)],
pub(crate) terminator: Terminator<'l>,
}
pub(crate) enum Terminator<'l> {
Breakpoint,
Step {
condition: &'l str,
position_in_line: BreakpointPositionInLine,
},
Continue {
position_in_line: BreakpointPositionInLine,
},
FunctionCall {
column_index: usize,
line: &'l str,
name: &'l ResourceLocation,
anchor: &'l Option<MinecraftEntityAnchor>,
selectors: &'l BTreeSet<usize>,
},
Return,
}
impl Terminator<'_> {
fn get_position_in_line(&self) -> PositionInLine {
match self {
Terminator::Breakpoint => PositionInLine::Breakpoint,
Terminator::Step {
position_in_line, ..
} => (*position_in_line).into(),
Terminator::Continue { position_in_line } => (*position_in_line).into(),
Terminator::FunctionCall { .. } => PositionInLine::Function,
Terminator::Return => PositionInLine::Return,
}
}
}
pub(crate) fn partition<'l>(
function: &ResourceLocation,
lines: &'l [(usize, String, Line)],
config: &'l Config,
) -> Vec<Partition<'l>> {
let mut partitions = Vec::new();
let mut start_line_index = 0;
let mut start = Position {
line_number: 0,
position_in_line: PositionInLine::Entry,
};
for (line_index, (_line_number, line, command)) in lines.iter().enumerate() {
let line_number = line_index + 1;
let mut next_partition = |terminator: Terminator<'l>| {
let end = Position {
line_number,
position_in_line: terminator.get_position_in_line(),
};
let partition = Partition {
start,
end,
regular_lines: &lines[start_line_index..line_index],
terminator,
};
start = end;
start_line_index = line_index;
partition
};
let get_breakpoint_terminator = |position_in_line| match config.get_breakpoint_kind(
function,
line_number,
position_in_line,
) {
Some(BreakpointKind::Normal) => Some(Terminator::Breakpoint),
Some(BreakpointKind::Invalid) => None,
Some(BreakpointKind::Continue) => Some(Terminator::Continue { position_in_line }),
Some(BreakpointKind::Step { condition }) => Some(Terminator::Step {
condition,
position_in_line,
}),
None => None,
};
if let Some(terminator) = get_breakpoint_terminator(BreakpointPositionInLine::Breakpoint) {
partitions.push(next_partition(terminator));
}
if matches!(command, Line::Breakpoint) {
partitions.push(next_partition(Terminator::Breakpoint));
}
if let Line::FunctionCall {
column_index,
name,
anchor,
selectors,
..
} = command
{
partitions.push(next_partition(Terminator::FunctionCall {
column_index: *column_index,
line,
name,
anchor,
selectors,
}));
}
if let Some(terminator) = get_breakpoint_terminator(BreakpointPositionInLine::AfterFunction)
{
partitions.push(next_partition(terminator));
}
if matches!(command, Line::Breakpoint | Line::FunctionCall { .. }) {
start_line_index += 1; }
}
partitions.push(Partition {
start,
end: Position {
line_number: lines.len(),
position_in_line: PositionInLine::Return,
},
regular_lines: &lines[start_line_index..lines.len()],
terminator: Terminator::Return,
});
partitions
}
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub(crate) struct Position {
pub(crate) line_number: usize,
pub(crate) position_in_line: PositionInLine,
}
impl FromStr for Position {
type Err = ();
fn from_str(s: &str) -> Result<Self, Self::Err> {
fn from_str_inner(s: &str) -> Option<Position> {
let (line_number, position_in_line) = s.split_once('_')?;
let line_number = line_number.parse().ok()?;
let position_in_line = position_in_line.parse().ok()?;
Some(Position {
line_number,
position_in_line,
})
}
from_str_inner(s).ok_or(())
}
}
impl Display for Position {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}_{}", self.line_number, self.position_in_line)
}
}
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub(crate) enum PositionInLine {
Entry,
Breakpoint,
Function,
AfterFunction,
Return,
}
impl FromStr for PositionInLine {
type Err = ();
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"entry" => Ok(PositionInLine::Entry),
"breakpoint" => Ok(PositionInLine::Breakpoint),
"function" => Ok(PositionInLine::Function),
"after_function" => Ok(PositionInLine::AfterFunction),
"return" => Ok(PositionInLine::Return),
_ => Err(()),
}
}
}
impl Display for PositionInLine {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
PositionInLine::Entry => write!(f, "entry"),
PositionInLine::Breakpoint => write!(f, "breakpoint"),
PositionInLine::Function => write!(f, "function"),
PositionInLine::AfterFunction => write!(f, "after_function"),
PositionInLine::Return => write!(f, "return"),
}
}
}