78 lines
2.2 KiB
Rust
78 lines
2.2 KiB
Rust
use {
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crate::{
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config::{
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context::Context,
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extractor::{opt, val, Extractor, ExtractorError},
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parser::{DataType, ParseResult, Parser, UnexpectedDataType},
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Tearing,
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},
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toml::{
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toml_span::{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::video::TearingMode,
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thiserror::Error,
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};
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#[derive(Debug, Error)]
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pub enum TearingParserError {
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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 TearingParser<'a>(pub &'a Context<'a>);
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impl Parser for TearingParser<'_> {
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type Value = Tearing;
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type Error = TearingParserError;
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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 mode = ext.extract(opt(val("mode")))?;
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let mode = mode.and_then(|m| match m.parse(&mut TearingModeParser) {
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Ok(m) => Some(m),
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Err(e) => {
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log::error!("Could not parse mode: {}", self.0.error(e));
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None
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}
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});
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Ok(Tearing { mode })
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}
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}
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#[derive(Debug, Error)]
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pub enum TearingModeParserError {
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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 TearingModeParser;
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impl Parser for TearingModeParser {
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type Value = TearingMode;
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type Error = TearingModeParserError;
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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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"never" => TearingMode::NEVER,
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"always" => TearingMode::ALWAYS,
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"variant1" => TearingMode::VARIANT_1,
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"variant2" => TearingMode::VARIANT_2,
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"variant3" => TearingMode::VARIANT_3,
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_ => return Err(TearingModeParserError::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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