79 lines
2.3 KiB
Rust
79 lines
2.3 KiB
Rust
use {
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crate::{
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config::{
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Xwayland,
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context::Context,
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extractor::{Extractor, ExtractorError, bol, opt, recover, val},
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parser::{DataType, ParseResult, Parser, UnexpectedDataType},
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},
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toml::{
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toml_span::{DespanExt, Span, Spanned, SpannedExt},
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toml_value::Value,
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},
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},
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indexmap::IndexMap,
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jay_config::xwayland::XScalingMode,
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thiserror::Error,
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};
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#[derive(Debug, Error)]
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pub enum XwaylandParserError {
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#[error(transparent)]
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Expected(#[from] UnexpectedDataType),
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#[error(transparent)]
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Extract(#[from] ExtractorError),
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}
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pub struct XwaylandParser<'a>(pub &'a Context<'a>);
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impl Parser for XwaylandParser<'_> {
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type Value = Xwayland;
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type Error = XwaylandParserError;
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const EXPECTED: &'static [DataType] = &[DataType::Table];
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fn parse_table(
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&mut self,
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span: Span,
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table: &IndexMap<Spanned<String>, Spanned<Value>>,
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) -> ParseResult<Self> {
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let mut ext = Extractor::new(self.0, span, table);
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let (enabled, scaling_mode) =
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ext.extract((recover(opt(bol("enabled"))), opt(val("scaling-mode"))))?;
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let scaling_mode = scaling_mode.and_then(|m| match m.parse(&mut XScalingModeParser) {
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Ok(m) => Some(m),
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Err(e) => {
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log::error!("Could not parse scaling mode: {}", self.0.error(e));
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None
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}
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});
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Ok(Xwayland {
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enabled: enabled.despan(),
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scaling_mode,
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})
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}
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}
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#[derive(Debug, Error)]
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pub enum XScalingModeParserError {
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#[error(transparent)]
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Expected(#[from] UnexpectedDataType),
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#[error("Unknown mode {0}")]
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UnknownMode(String),
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}
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struct XScalingModeParser;
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impl Parser for XScalingModeParser {
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type Value = XScalingMode;
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type Error = XScalingModeParserError;
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const EXPECTED: &'static [DataType] = &[DataType::String];
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fn parse_string(&mut self, span: Span, string: &str) -> ParseResult<Self> {
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let mode = match string {
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"default" => XScalingMode::DEFAULT,
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"downscaled" => XScalingMode::DOWNSCALED,
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_ => return Err(XScalingModeParserError::UnknownMode(string.to_string()).spanned(span)),
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};
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Ok(mode)
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}
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}
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