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-rw-r--r--crates/ra_syntax/src/ast/make.rs36
1 files changed, 17 insertions, 19 deletions
diff --git a/crates/ra_syntax/src/ast/make.rs b/crates/ra_syntax/src/ast/make.rs
index d0e960fb4..da0eb0926 100644
--- a/crates/ra_syntax/src/ast/make.rs
+++ b/crates/ra_syntax/src/ast/make.rs
@@ -1,5 +1,9 @@
1//! This module contains free-standing functions for creating AST fragments out 1//! This module contains free-standing functions for creating AST fragments out
2//! of smaller pieces. 2//! of smaller pieces.
3//!
4//! Note that all functions here intended to be stupid constructors, which just
5//! assemble a finish node from immediate children. If you want to do something
6//! smarter than that, it probably doesn't belong in this module.
3use itertools::Itertools; 7use itertools::Itertools;
4use stdx::format_to; 8use stdx::format_to;
5 9
@@ -95,6 +99,9 @@ pub fn expr_empty_block() -> ast::Expr {
95pub fn expr_unimplemented() -> ast::Expr { 99pub fn expr_unimplemented() -> ast::Expr {
96 expr_from_text("unimplemented!()") 100 expr_from_text("unimplemented!()")
97} 101}
102pub fn expr_unreachable() -> ast::Expr {
103 expr_from_text("unreachable!()")
104}
98pub fn expr_todo() -> ast::Expr { 105pub fn expr_todo() -> ast::Expr {
99 expr_from_text("todo!()") 106 expr_from_text("todo!()")
100} 107}
@@ -264,10 +271,6 @@ pub fn token(kind: SyntaxKind) -> SyntaxToken {
264 .unwrap_or_else(|| panic!("unhandled token: {:?}", kind)) 271 .unwrap_or_else(|| panic!("unhandled token: {:?}", kind))
265} 272}
266 273
267pub fn unreachable_macro_call() -> ast::MacroCall {
268 ast_from_text(&format!("unreachable!()"))
269}
270
271pub fn param(name: String, ty: String) -> ast::Param { 274pub fn param(name: String, ty: String) -> ast::Param {
272 ast_from_text(&format!("fn f({}: {}) {{ }}", name, ty)) 275 ast_from_text(&format!("fn f({}: {}) {{ }}", name, ty))
273} 276}
@@ -277,7 +280,12 @@ pub fn param_list(pats: impl IntoIterator<Item = ast::Param>) -> ast::ParamList
277 ast_from_text(&format!("fn f({}) {{ }}", args)) 280 ast_from_text(&format!("fn f({}) {{ }}", args))
278} 281}
279 282
283pub fn visibility_pub_crate() -> ast::Visibility {
284 ast_from_text("pub(crate) struct S")
285}
286
280pub fn fn_def( 287pub fn fn_def(
288 visibility: Option<ast::Visibility>,
281 fn_name: ast::Name, 289 fn_name: ast::Name,
282 type_params: Option<ast::TypeParamList>, 290 type_params: Option<ast::TypeParamList>,
283 params: ast::ParamList, 291 params: ast::ParamList,
@@ -285,21 +293,11 @@ pub fn fn_def(
285) -> ast::FnDef { 293) -> ast::FnDef {
286 let type_params = 294 let type_params =
287 if let Some(type_params) = type_params { format!("<{}>", type_params) } else { "".into() }; 295 if let Some(type_params) = type_params { format!("<{}>", type_params) } else { "".into() };
288 ast_from_text(&format!("fn {}{}{} {}", fn_name, type_params, params, body)) 296 let visibility = match visibility {
289} 297 None => String::new(),
290 298 Some(it) => format!("{} ", it),
291pub fn add_leading_newlines(amount_of_newlines: usize, t: impl AstNode) -> ast::SourceFile { 299 };
292 let newlines = "\n".repeat(amount_of_newlines); 300 ast_from_text(&format!("{}fn {}{}{} {}", visibility, fn_name, type_params, params, body))
293 ast_from_text(&format!("{}{}", newlines, t.syntax()))
294}
295
296pub fn add_trailing_newlines(amount_of_newlines: usize, t: impl AstNode) -> ast::SourceFile {
297 let newlines = "\n".repeat(amount_of_newlines);
298 ast_from_text(&format!("{}{}", t.syntax(), newlines))
299}
300
301pub fn add_pub_crate_modifier(fn_def: ast::FnDef) -> ast::FnDef {
302 ast_from_text(&format!("pub(crate) {}", fn_def))
303} 301}
304 302
305fn ast_from_text<N: AstNode>(text: &str) -> N { 303fn ast_from_text<N: AstNode>(text: &str) -> N {