82 lines
2.1 KiB
Rust
82 lines
2.1 KiB
Rust
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use languageserver_types::{Range, SymbolKind, Position};
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use libeditor::{LineIndex, LineCol};
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use libsyntax2::{SyntaxKind, TextUnit, TextRange};
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pub trait Conv {
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type Output;
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fn conv(&self) -> Self::Output;
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}
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pub trait ConvWith {
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type Ctx;
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type Output;
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fn conv_with(&self, ctx: &Self::Ctx) -> Self::Output;
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}
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impl Conv for SyntaxKind {
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type Output = SymbolKind;
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fn conv(&self) -> <Self as Conv>::Output {
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match *self {
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SyntaxKind::FUNCTION => SymbolKind::Function,
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SyntaxKind::STRUCT => SymbolKind::Struct,
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SyntaxKind::ENUM => SymbolKind::Enum,
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SyntaxKind::TRAIT => SymbolKind::Interface,
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SyntaxKind::MODULE => SymbolKind::Module,
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SyntaxKind::TYPE_ITEM => SymbolKind::TypeParameter,
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SyntaxKind::STATIC_ITEM => SymbolKind::Constant,
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SyntaxKind::CONST_ITEM => SymbolKind::Constant,
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_ => SymbolKind::Variable,
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}
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}
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}
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impl ConvWith for Position {
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type Ctx = LineIndex;
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type Output = TextUnit;
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fn conv_with(&self, line_index: &LineIndex) -> TextUnit {
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// TODO: UTF-16
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let line_col = LineCol {
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line: self.line as u32,
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col: (self.character as u32).into(),
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};
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line_index.offset(line_col)
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}
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}
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impl ConvWith for TextUnit {
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type Ctx = LineIndex;
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type Output = Position;
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fn conv_with(&self, line_index: &LineIndex) -> Position {
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let line_col = line_index.line_col(*self);
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// TODO: UTF-16
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Position::new(line_col.line as u64, u32::from(line_col.col) as u64)
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}
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}
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impl ConvWith for TextRange {
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type Ctx = LineIndex;
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type Output = Range;
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fn conv_with(&self, line_index: &LineIndex) -> Range {
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Range::new(
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self.start().conv_with(line_index),
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self.end().conv_with(line_index),
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)
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}
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}
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impl ConvWith for Range {
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type Ctx = LineIndex;
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type Output = TextRange;
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fn conv_with(&self, line_index: &LineIndex) -> TextRange {
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TextRange::from_to(
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self.start.conv_with(line_index),
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self.end.conv_with(line_index),
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)
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}
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}
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