Grand refactoring

crates/libanalysis/src/api.rs

@@ -0,0 +1,136 @@
+use relative_path::RelativePathBuf;
+use libsyntax2::{File, TextRange, TextUnit, AtomEdit};
+use libeditor;
+use {World, FileId, Query};
+
+pub use libeditor::{
+    LocalEdit, StructureNode, LineIndex, FileSymbol,
+    Runnable, RunnableKind, HighlightedRange, CompletionItem
+};
+
+#[derive(Clone, Debug)]
+pub struct Analysis {
+    pub(crate) imp: World
+}
+
+impl Analysis {
+    pub fn file_syntax(&self, file_id: FileId) -> File {
+        self.imp.file_syntax(file_id)
+            .unwrap()
+    }
+    pub fn file_line_index(&self, file_id: FileId) -> LineIndex {
+        self.imp.file_line_index(file_id)
+            .unwrap()
+    }
+    pub fn extend_selection(&self, file: &File, range: TextRange) -> TextRange {
+        libeditor::extend_selection(file, range).unwrap_or(range)
+    }
+    pub fn matching_brace(&self, file: &File, offset: TextUnit) -> Option<TextUnit> {
+        libeditor::matching_brace(file, offset)
+    }
+    pub fn syntax_tree(&self, file_id: FileId) -> String {
+        let file = self.file_syntax(file_id);
+        libeditor::syntax_tree(&file)
+    }
+    pub fn join_lines(&self, file_id: FileId, range: TextRange) -> SourceChange {
+        let file = self.file_syntax(file_id);
+        SourceChange::from_local_edit(
+            file_id, "join lines",
+            libeditor::join_lines(&file, range),
+        )
+    }
+    pub fn on_eq_typed(&self, file_id: FileId, offset: TextUnit) -> Option<SourceChange> {
+        let file = self.file_syntax(file_id);
+        Some(SourceChange::from_local_edit(
+            file_id, "add semicolon",
+            libeditor::on_eq_typed(&file, offset)?,
+        ))
+    }
+    pub fn file_structure(&self, file_id: FileId) -> Vec<StructureNode> {
+        let file = self.file_syntax(file_id);
+        libeditor::file_structure(&file)
+    }
+    pub fn symbol_search(&self, query: Query) -> Vec<(FileId, FileSymbol)> {
+        self.imp.world_symbols(query)
+    }
+    pub fn approximately_resolve_symbol(&self, file_id: FileId, offset: TextUnit) -> Vec<(FileId, FileSymbol)> {
+        self.imp.approximately_resolve_symbol(file_id, offset)
+            .unwrap()
+    }
+    pub fn parent_module(&self, file_id: FileId) -> Vec<(FileId, FileSymbol)> {
+        self.imp.parent_module(file_id)
+    }
+    pub fn runnables(&self, file_id: FileId) -> Vec<Runnable> {
+        let file = self.file_syntax(file_id);
+        libeditor::runnables(&file)
+    }
+    pub fn highlight(&self, file_id: FileId) -> Vec<HighlightedRange> {
+        let file = self.file_syntax(file_id);
+        libeditor::highlight(&file)
+    }
+    pub fn completions(&self, file_id: FileId, offset: TextUnit) -> Option<Vec<CompletionItem>> {
+        let file = self.file_syntax(file_id);
+        libeditor::scope_completion(&file, offset)
+    }
+    pub fn assists(&self, file_id: FileId, offset: TextUnit) -> Vec<SourceChange> {
+        self.imp.assists(file_id, offset)
+    }
+    pub fn diagnostics(&self, file_id: FileId) -> Vec<Diagnostic> {
+        self.imp.diagnostics(file_id)
+    }
+}
+
+#[derive(Debug)]
+pub struct SourceChange {
+    pub label: String,
+    pub source_file_edits: Vec<SourceFileEdit>,
+    pub file_system_edits: Vec<FileSystemEdit>,
+    pub cursor_position: Option<Position>,
+}
+
+#[derive(Debug)]
+pub struct Position {
+    pub file_id: FileId,
+    pub offset: TextUnit,
+}
+
+#[derive(Debug)]
+pub struct SourceFileEdit {
+    pub file_id: FileId,
+    pub edits: Vec<AtomEdit>,
+}
+
+#[derive(Debug)]
+pub enum FileSystemEdit {
+    CreateFile {
+        anchor: FileId,
+        path: RelativePathBuf,
+    },
+    MoveFile {
+        file: FileId,
+        path: RelativePathBuf,
+    }
+}
+
+#[derive(Debug)]
+pub struct Diagnostic {
+    pub message: String,
+    pub range: TextRange,
+    pub fix: Option<SourceChange>,
+}
+
+impl SourceChange {
+    pub(crate) fn from_local_edit(file_id: FileId, label: &str, edit: LocalEdit) -> SourceChange {
+        let file_edit = SourceFileEdit {
+            file_id,
+            edits: edit.edit.into_atoms(),
+        };
+        SourceChange {
+            label: label.to_string(),
+            source_file_edits: vec![file_edit],
+            file_system_edits: vec![],
+            cursor_position: edit.cursor_position
+                .map(|offset| Position { offset, file_id })
+        }
+    }
+}