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|
use relative_path::RelativePathBuf;
use hir::{
self, ModuleSource, source_binder::module_from_declaration,
};
use ra_syntax::{
algo::find_node_at_offset,
ast,
AstNode,
SyntaxNode
};
use crate::{
db::RootDatabase,
FilePosition,
FileSystemEdit,
SourceChange,
SourceFileEdit,
};
use ra_db::{FilesDatabase, SyntaxDatabase};
use relative_path::RelativePath;
pub(crate) fn rename(
db: &RootDatabase,
position: FilePosition,
new_name: &str,
) -> Option<SourceChange> {
let source_file = db.source_file(position.file_id);
let syntax = source_file.syntax();
if let Some((ast_name, ast_module)) = find_name_and_module_at_offset(syntax, position) {
rename_mod(db, ast_name, ast_module, position, new_name)
} else {
rename_reference(db, position, new_name)
}
}
fn find_name_and_module_at_offset(
syntax: &SyntaxNode,
position: FilePosition,
) -> Option<(&ast::Name, &ast::Module)> {
let ast_name = find_node_at_offset::<ast::Name>(syntax, position.offset);
let ast_name_parent = ast::Module::cast(ast_name?.syntax().parent()?);
if let (Some(ast_module), Some(name)) = (ast_name_parent, ast_name) {
return Some((name, ast_module));
}
None
}
fn rename_mod(
db: &RootDatabase,
ast_name: &ast::Name,
ast_module: &ast::Module,
position: FilePosition,
new_name: &str,
) -> Option<SourceChange> {
let mut source_file_edits = Vec::new();
let mut file_system_edits = Vec::new();
if let Some(module) = module_from_declaration(db, position.file_id, &ast_module) {
let (file_id, module_source) = module.definition_source(db);
match module_source {
ModuleSource::SourceFile(..) => {
let mod_path: RelativePathBuf = db.file_relative_path(file_id);
// mod is defined in path/to/dir/mod.rs
let dst_path = if mod_path.file_stem() == Some("mod") {
mod_path
.parent()
.and_then(|p| p.parent())
.or_else(|| Some(RelativePath::new("")))
.map(|p| p.join(new_name).join("mod.rs"))
} else {
Some(mod_path.with_file_name(new_name).with_extension("rs"))
};
if let Some(path) = dst_path {
let move_file = FileSystemEdit::MoveFile {
src: file_id,
dst_source_root: db.file_source_root(position.file_id),
dst_path: path,
};
file_system_edits.push(move_file);
}
}
ModuleSource::Module(..) => {}
}
}
let edit = SourceFileEdit {
file_id: position.file_id,
edit: {
let mut builder = ra_text_edit::TextEditBuilder::default();
builder.replace(ast_name.syntax().range(), new_name.into());
builder.finish()
},
};
source_file_edits.push(edit);
return Some(SourceChange {
label: "rename".to_string(),
source_file_edits,
file_system_edits,
cursor_position: None,
});
}
fn rename_reference(
db: &RootDatabase,
position: FilePosition,
new_name: &str,
) -> Option<SourceChange> {
let edit = db
.find_all_refs(position)
.iter()
.map(|(file_id, text_range)| SourceFileEdit {
file_id: *file_id,
edit: {
let mut builder = ra_text_edit::TextEditBuilder::default();
builder.replace(*text_range, new_name.into());
builder.finish()
},
})
.collect::<Vec<_>>();
if edit.is_empty() {
return None;
}
return Some(SourceChange {
label: "rename".to_string(),
source_file_edits: edit,
file_system_edits: Vec::new(),
cursor_position: None,
});
}
|
