1 use crate::ast::{self, Ident, Generics, Expr, BlockCheckMode, UnOp, PatKind};
3 use crate::source_map::{dummy_spanned, respan, Spanned};
4 use crate::ext::base::ExtCtxt;
6 use crate::symbol::{kw, sym, Symbol};
9 use rustc_target::spec::abi::Abi;
10 use syntax_pos::{Pos, Span};
12 // Left so that Cargo tests don't break, this can be removed once those no longer use it
13 pub trait AstBuilder {}
15 impl<'a> ExtCtxt<'a> {
16 pub fn path(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path {
17 self.path_all(span, false, strs, vec![], vec![])
19 pub fn path_ident(&self, span: Span, id: ast::Ident) -> ast::Path {
20 self.path(span, vec![id])
22 pub fn path_global(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path {
23 self.path_all(span, true, strs, vec![], vec![])
25 pub fn path_all(&self,
28 mut idents: Vec<ast::Ident> ,
29 args: Vec<ast::GenericArg>,
30 constraints: Vec<ast::AssocTyConstraint> )
32 assert!(!idents.is_empty());
33 let add_root = global && !idents[0].is_path_segment_keyword();
34 let mut segments = Vec::with_capacity(idents.len() + add_root as usize);
36 segments.push(ast::PathSegment::path_root(span));
38 let last_ident = idents.pop().unwrap();
39 segments.extend(idents.into_iter().map(|ident| {
40 ast::PathSegment::from_ident(ident.with_span_pos(span))
42 let args = if !args.is_empty() || !constraints.is_empty() {
43 ast::AngleBracketedArgs { args, constraints, span }.into()
47 segments.push(ast::PathSegment {
48 ident: last_ident.with_span_pos(span),
49 id: ast::DUMMY_NODE_ID,
52 ast::Path { span, segments }
55 /// Constructs a qualified path.
57 /// Constructs a path like `<self_type as trait_path>::ident`.
59 self_type: P<ast::Ty>,
60 trait_path: ast::Path,
62 -> (ast::QSelf, ast::Path) {
63 self.qpath_all(self_type, trait_path, ident, vec![], vec![])
66 /// Constructs a qualified path.
68 /// Constructs a path like `<self_type as trait_path>::ident<'a, T, A = Bar>`.
69 pub fn qpath_all(&self,
70 self_type: P<ast::Ty>,
71 trait_path: ast::Path,
73 args: Vec<ast::GenericArg>,
74 constraints: Vec<ast::AssocTyConstraint>)
75 -> (ast::QSelf, ast::Path) {
76 let mut path = trait_path;
77 let args = if !args.is_empty() || !constraints.is_empty() {
78 ast::AngleBracketedArgs { args, constraints, span: ident.span }.into()
82 path.segments.push(ast::PathSegment { ident, id: ast::DUMMY_NODE_ID, args });
87 position: path.segments.len() - 1
91 pub fn ty_mt(&self, ty: P<ast::Ty>, mutbl: ast::Mutability) -> ast::MutTy {
98 pub fn ty(&self, span: Span, ty: ast::TyKind) -> P<ast::Ty> {
100 id: ast::DUMMY_NODE_ID,
106 pub fn ty_path(&self, path: ast::Path) -> P<ast::Ty> {
107 self.ty(path.span, ast::TyKind::Path(None, path))
110 // Might need to take bounds as an argument in the future, if you ever want
111 // to generate a bounded existential trait type.
112 pub fn ty_ident(&self, span: Span, ident: ast::Ident)
114 self.ty_path(self.path_ident(span, ident))
117 pub fn anon_const(&self, span: Span, expr: ast::ExprKind) -> ast::AnonConst {
119 id: ast::DUMMY_NODE_ID,
121 id: ast::DUMMY_NODE_ID,
124 attrs: ThinVec::new(),
129 pub fn const_ident(&self, span: Span, ident: ast::Ident) -> ast::AnonConst {
130 self.anon_const(span, ast::ExprKind::Path(None, self.path_ident(span, ident)))
133 pub fn ty_rptr(&self,
136 lifetime: Option<ast::Lifetime>,
137 mutbl: ast::Mutability)
140 ast::TyKind::Rptr(lifetime, self.ty_mt(ty, mutbl)))
146 mutbl: ast::Mutability)
149 ast::TyKind::Ptr(self.ty_mt(ty, mutbl)))
152 pub fn ty_infer(&self, span: Span) -> P<ast::Ty> {
153 self.ty(span, ast::TyKind::Infer)
156 pub fn typaram(&self,
159 attrs: Vec<ast::Attribute>,
160 bounds: ast::GenericBounds,
161 default: Option<P<ast::Ty>>) -> ast::GenericParam {
163 ident: ident.with_span_pos(span),
164 id: ast::DUMMY_NODE_ID,
167 kind: ast::GenericParamKind::Type {
170 is_placeholder: false
174 pub fn trait_ref(&self, path: ast::Path) -> ast::TraitRef {
177 ref_id: ast::DUMMY_NODE_ID,
181 pub fn poly_trait_ref(&self, span: Span, path: ast::Path) -> ast::PolyTraitRef {
183 bound_generic_params: Vec::new(),
184 trait_ref: self.trait_ref(path),
189 pub fn trait_bound(&self, path: ast::Path) -> ast::GenericBound {
190 ast::GenericBound::Trait(self.poly_trait_ref(path.span, path),
191 ast::TraitBoundModifier::None)
194 pub fn lifetime(&self, span: Span, ident: ast::Ident) -> ast::Lifetime {
195 ast::Lifetime { id: ast::DUMMY_NODE_ID, ident: ident.with_span_pos(span) }
198 pub fn lifetime_def(&self,
201 attrs: Vec<ast::Attribute>,
202 bounds: ast::GenericBounds)
203 -> ast::GenericParam {
204 let lifetime = self.lifetime(span, ident);
206 ident: lifetime.ident,
210 kind: ast::GenericParamKind::Lifetime,
211 is_placeholder: false
215 pub fn stmt_expr(&self, expr: P<ast::Expr>) -> ast::Stmt {
217 id: ast::DUMMY_NODE_ID,
219 node: ast::StmtKind::Expr(expr),
223 pub fn stmt_semi(&self, expr: P<ast::Expr>) -> ast::Stmt {
225 id: ast::DUMMY_NODE_ID,
227 node: ast::StmtKind::Semi(expr),
231 pub fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident,
232 ex: P<ast::Expr>) -> ast::Stmt {
234 let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Mutable);
235 self.pat_ident_binding_mode(sp, ident, binding_mode)
237 self.pat_ident(sp, ident)
239 let local = P(ast::Local {
243 id: ast::DUMMY_NODE_ID,
245 attrs: ThinVec::new(),
248 id: ast::DUMMY_NODE_ID,
249 node: ast::StmtKind::Local(local),
254 pub fn stmt_let_typed(&self,
262 let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Mutable);
263 self.pat_ident_binding_mode(sp, ident, binding_mode)
265 self.pat_ident(sp, ident)
267 let local = P(ast::Local {
271 id: ast::DUMMY_NODE_ID,
273 attrs: ThinVec::new(),
276 id: ast::DUMMY_NODE_ID,
277 node: ast::StmtKind::Local(local),
282 // Generates `let _: Type;`, which is usually used for type assertions.
283 pub fn stmt_let_type_only(&self, span: Span, ty: P<ast::Ty>) -> ast::Stmt {
284 let local = P(ast::Local {
285 pat: self.pat_wild(span),
288 id: ast::DUMMY_NODE_ID,
290 attrs: ThinVec::new(),
293 id: ast::DUMMY_NODE_ID,
294 node: ast::StmtKind::Local(local),
299 pub fn stmt_item(&self, sp: Span, item: P<ast::Item>) -> ast::Stmt {
301 id: ast::DUMMY_NODE_ID,
302 node: ast::StmtKind::Item(item),
307 pub fn block_expr(&self, expr: P<ast::Expr>) -> P<ast::Block> {
308 self.block(expr.span, vec![ast::Stmt {
309 id: ast::DUMMY_NODE_ID,
311 node: ast::StmtKind::Expr(expr),
314 pub fn block(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Block> {
317 id: ast::DUMMY_NODE_ID,
318 rules: BlockCheckMode::Default,
323 pub fn expr(&self, span: Span, node: ast::ExprKind) -> P<ast::Expr> {
325 id: ast::DUMMY_NODE_ID,
328 attrs: ThinVec::new(),
332 pub fn expr_path(&self, path: ast::Path) -> P<ast::Expr> {
333 self.expr(path.span, ast::ExprKind::Path(None, path))
336 /// Constructs a `QPath` expression.
337 pub fn expr_qpath(&self, span: Span, qself: ast::QSelf, path: ast::Path) -> P<ast::Expr> {
338 self.expr(span, ast::ExprKind::Path(Some(qself), path))
341 pub fn expr_ident(&self, span: Span, id: ast::Ident) -> P<ast::Expr> {
342 self.expr_path(self.path_ident(span, id))
344 pub fn expr_self(&self, span: Span) -> P<ast::Expr> {
345 self.expr_ident(span, Ident::with_dummy_span(kw::SelfLower))
348 pub fn expr_binary(&self, sp: Span, op: ast::BinOpKind,
349 lhs: P<ast::Expr>, rhs: P<ast::Expr>) -> P<ast::Expr> {
350 self.expr(sp, ast::ExprKind::Binary(Spanned { node: op, span: sp }, lhs, rhs))
353 pub fn expr_deref(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
354 self.expr_unary(sp, UnOp::Deref, e)
356 pub fn expr_unary(&self, sp: Span, op: ast::UnOp, e: P<ast::Expr>) -> P<ast::Expr> {
357 self.expr(sp, ast::ExprKind::Unary(op, e))
360 pub fn expr_field_access(
361 &self, sp: Span, expr: P<ast::Expr>, ident: ast::Ident,
363 self.expr(sp, ast::ExprKind::Field(expr, ident.with_span_pos(sp)))
365 pub fn expr_tup_field_access(&self, sp: Span, expr: P<ast::Expr>, idx: usize) -> P<ast::Expr> {
366 let ident = Ident::new(sym::integer(idx), sp);
367 self.expr(sp, ast::ExprKind::Field(expr, ident))
369 pub fn expr_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
370 self.expr(sp, ast::ExprKind::AddrOf(ast::Mutability::Immutable, e))
372 pub fn expr_mut_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
373 self.expr(sp, ast::ExprKind::AddrOf(ast::Mutability::Mutable, e))
377 &self, span: Span, expr: P<ast::Expr>, args: Vec<P<ast::Expr>>,
379 self.expr(span, ast::ExprKind::Call(expr, args))
381 pub fn expr_call_ident(&self, span: Span, id: ast::Ident,
382 args: Vec<P<ast::Expr>>) -> P<ast::Expr> {
383 self.expr(span, ast::ExprKind::Call(self.expr_ident(span, id), args))
385 pub fn expr_call_global(&self, sp: Span, fn_path: Vec<ast::Ident> ,
386 args: Vec<P<ast::Expr>> ) -> P<ast::Expr> {
387 let pathexpr = self.expr_path(self.path_global(sp, fn_path));
388 self.expr_call(sp, pathexpr, args)
390 pub fn expr_method_call(&self, span: Span,
393 mut args: Vec<P<ast::Expr>> ) -> P<ast::Expr> {
394 args.insert(0, expr);
395 let segment = ast::PathSegment::from_ident(ident.with_span_pos(span));
396 self.expr(span, ast::ExprKind::MethodCall(segment, args))
398 pub fn expr_block(&self, b: P<ast::Block>) -> P<ast::Expr> {
399 self.expr(b.span, ast::ExprKind::Block(b, None))
401 pub fn field_imm(&self, span: Span, ident: Ident, e: P<ast::Expr>) -> ast::Field {
403 ident: ident.with_span_pos(span),
407 attrs: ThinVec::new(),
408 id: ast::DUMMY_NODE_ID,
409 is_placeholder: false,
413 &self, span: Span, path: ast::Path, fields: Vec<ast::Field>
415 self.expr(span, ast::ExprKind::Struct(path, fields, None))
417 pub fn expr_struct_ident(&self, span: Span,
418 id: ast::Ident, fields: Vec<ast::Field>) -> P<ast::Expr> {
419 self.expr_struct(span, self.path_ident(span, id), fields)
422 pub fn expr_lit(&self, span: Span, lit_kind: ast::LitKind) -> P<ast::Expr> {
423 let lit = ast::Lit::from_lit_kind(lit_kind, span);
424 self.expr(span, ast::ExprKind::Lit(lit))
426 pub fn expr_usize(&self, span: Span, i: usize) -> P<ast::Expr> {
427 self.expr_lit(span, ast::LitKind::Int(i as u128,
428 ast::LitIntType::Unsigned(ast::UintTy::Usize)))
430 pub fn expr_isize(&self, sp: Span, i: isize) -> P<ast::Expr> {
432 let i = (-i) as u128;
433 let lit_ty = ast::LitIntType::Signed(ast::IntTy::Isize);
434 let lit = self.expr_lit(sp, ast::LitKind::Int(i, lit_ty));
435 self.expr_unary(sp, ast::UnOp::Neg, lit)
437 self.expr_lit(sp, ast::LitKind::Int(i as u128,
438 ast::LitIntType::Signed(ast::IntTy::Isize)))
441 pub fn expr_u32(&self, sp: Span, u: u32) -> P<ast::Expr> {
442 self.expr_lit(sp, ast::LitKind::Int(u as u128,
443 ast::LitIntType::Unsigned(ast::UintTy::U32)))
445 pub fn expr_u16(&self, sp: Span, u: u16) -> P<ast::Expr> {
446 self.expr_lit(sp, ast::LitKind::Int(u as u128,
447 ast::LitIntType::Unsigned(ast::UintTy::U16)))
449 pub fn expr_u8(&self, sp: Span, u: u8) -> P<ast::Expr> {
450 self.expr_lit(sp, ast::LitKind::Int(u as u128, ast::LitIntType::Unsigned(ast::UintTy::U8)))
452 pub fn expr_bool(&self, sp: Span, value: bool) -> P<ast::Expr> {
453 self.expr_lit(sp, ast::LitKind::Bool(value))
456 pub fn expr_vec(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
457 self.expr(sp, ast::ExprKind::Array(exprs))
459 pub fn expr_vec_ng(&self, sp: Span) -> P<ast::Expr> {
460 self.expr_call_global(sp, self.std_path(&[sym::vec, sym::Vec, sym::new]),
463 pub fn expr_vec_slice(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
464 self.expr_addr_of(sp, self.expr_vec(sp, exprs))
466 pub fn expr_str(&self, sp: Span, s: Symbol) -> P<ast::Expr> {
467 self.expr_lit(sp, ast::LitKind::Str(s, ast::StrStyle::Cooked))
470 pub fn expr_cast(&self, sp: Span, expr: P<ast::Expr>, ty: P<ast::Ty>) -> P<ast::Expr> {
471 self.expr(sp, ast::ExprKind::Cast(expr, ty))
474 pub fn expr_some(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
475 let some = self.std_path(&[sym::option, sym::Option, sym::Some]);
476 self.expr_call_global(sp, some, vec![expr])
479 pub fn expr_none(&self, sp: Span) -> P<ast::Expr> {
480 let none = self.std_path(&[sym::option, sym::Option, sym::None]);
481 let none = self.path_global(sp, none);
485 pub fn expr_break(&self, sp: Span) -> P<ast::Expr> {
486 self.expr(sp, ast::ExprKind::Break(None, None))
489 pub fn expr_tuple(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
490 self.expr(sp, ast::ExprKind::Tup(exprs))
493 pub fn expr_fail(&self, span: Span, msg: Symbol) -> P<ast::Expr> {
494 let loc = self.source_map().lookup_char_pos(span.lo());
495 let expr_file = self.expr_str(span, Symbol::intern(&loc.file.name.to_string()));
496 let expr_line = self.expr_u32(span, loc.line as u32);
497 let expr_col = self.expr_u32(span, loc.col.to_usize() as u32 + 1);
498 let expr_loc_tuple = self.expr_tuple(span, vec![expr_file, expr_line, expr_col]);
499 let expr_loc_ptr = self.expr_addr_of(span, expr_loc_tuple);
500 self.expr_call_global(
502 [sym::std, sym::rt, sym::begin_panic].iter().map(|s| Ident::new(*s, span)).collect(),
504 self.expr_str(span, msg),
508 pub fn expr_unreachable(&self, span: Span) -> P<ast::Expr> {
509 self.expr_fail(span, Symbol::intern("internal error: entered unreachable code"))
512 pub fn expr_ok(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
513 let ok = self.std_path(&[sym::result, sym::Result, sym::Ok]);
514 self.expr_call_global(sp, ok, vec![expr])
517 pub fn expr_err(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
518 let err = self.std_path(&[sym::result, sym::Result, sym::Err]);
519 self.expr_call_global(sp, err, vec![expr])
522 pub fn expr_try(&self, sp: Span, head: P<ast::Expr>) -> P<ast::Expr> {
523 let ok = self.std_path(&[sym::result, sym::Result, sym::Ok]);
524 let ok_path = self.path_global(sp, ok);
525 let err = self.std_path(&[sym::result, sym::Result, sym::Err]);
526 let err_path = self.path_global(sp, err);
528 let binding_variable = self.ident_of("__try_var", sp);
529 let binding_pat = self.pat_ident(sp, binding_variable);
530 let binding_expr = self.expr_ident(sp, binding_variable);
532 // `Ok(__try_var)` pattern
533 let ok_pat = self.pat_tuple_struct(sp, ok_path, vec![binding_pat.clone()]);
535 // `Err(__try_var)` (pattern and expression respectively)
536 let err_pat = self.pat_tuple_struct(sp, err_path.clone(), vec![binding_pat]);
537 let err_inner_expr = self.expr_call(sp, self.expr_path(err_path),
538 vec![binding_expr.clone()]);
539 // `return Err(__try_var)`
540 let err_expr = self.expr(sp, ast::ExprKind::Ret(Some(err_inner_expr)));
542 // `Ok(__try_var) => __try_var`
543 let ok_arm = self.arm(sp, ok_pat, binding_expr);
544 // `Err(__try_var) => return Err(__try_var)`
545 let err_arm = self.arm(sp, err_pat, err_expr);
547 // `match head { Ok() => ..., Err() => ... }`
548 self.expr_match(sp, head, vec![ok_arm, err_arm])
552 pub fn pat(&self, span: Span, pat: PatKind) -> P<ast::Pat> {
553 P(ast::Pat { id: ast::DUMMY_NODE_ID, node: pat, span })
555 pub fn pat_wild(&self, span: Span) -> P<ast::Pat> {
556 self.pat(span, PatKind::Wild)
558 pub fn pat_lit(&self, span: Span, expr: P<ast::Expr>) -> P<ast::Pat> {
559 self.pat(span, PatKind::Lit(expr))
561 pub fn pat_ident(&self, span: Span, ident: ast::Ident) -> P<ast::Pat> {
562 let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Immutable);
563 self.pat_ident_binding_mode(span, ident, binding_mode)
566 pub fn pat_ident_binding_mode(&self,
569 bm: ast::BindingMode) -> P<ast::Pat> {
570 let pat = PatKind::Ident(bm, ident.with_span_pos(span), None);
573 pub fn pat_path(&self, span: Span, path: ast::Path) -> P<ast::Pat> {
574 self.pat(span, PatKind::Path(None, path))
576 pub fn pat_tuple_struct(&self, span: Span, path: ast::Path,
577 subpats: Vec<P<ast::Pat>>) -> P<ast::Pat> {
578 self.pat(span, PatKind::TupleStruct(path, subpats))
580 pub fn pat_struct(&self, span: Span, path: ast::Path,
581 field_pats: Vec<ast::FieldPat>) -> P<ast::Pat> {
582 self.pat(span, PatKind::Struct(path, field_pats, false))
584 pub fn pat_tuple(&self, span: Span, pats: Vec<P<ast::Pat>>) -> P<ast::Pat> {
585 self.pat(span, PatKind::Tuple(pats))
588 pub fn pat_some(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
589 let some = self.std_path(&[sym::option, sym::Option, sym::Some]);
590 let path = self.path_global(span, some);
591 self.pat_tuple_struct(span, path, vec![pat])
594 pub fn pat_none(&self, span: Span) -> P<ast::Pat> {
595 let some = self.std_path(&[sym::option, sym::Option, sym::None]);
596 let path = self.path_global(span, some);
597 self.pat_path(span, path)
600 pub fn pat_ok(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
601 let some = self.std_path(&[sym::result, sym::Result, sym::Ok]);
602 let path = self.path_global(span, some);
603 self.pat_tuple_struct(span, path, vec![pat])
606 pub fn pat_err(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
607 let some = self.std_path(&[sym::result, sym::Result, sym::Err]);
608 let path = self.path_global(span, some);
609 self.pat_tuple_struct(span, path, vec![pat])
612 pub fn arm(&self, span: Span, pat: P<ast::Pat>, expr: P<ast::Expr>) -> ast::Arm {
619 id: ast::DUMMY_NODE_ID,
620 is_placeholder: false,
624 pub fn arm_unreachable(&self, span: Span) -> ast::Arm {
625 self.arm(span, self.pat_wild(span), self.expr_unreachable(span))
628 pub fn expr_match(&self, span: Span, arg: P<ast::Expr>, arms: Vec<ast::Arm>) -> P<Expr> {
629 self.expr(span, ast::ExprKind::Match(arg, arms))
632 pub fn expr_if(&self, span: Span, cond: P<ast::Expr>,
633 then: P<ast::Expr>, els: Option<P<ast::Expr>>) -> P<ast::Expr> {
634 let els = els.map(|x| self.expr_block(self.block_expr(x)));
635 self.expr(span, ast::ExprKind::If(cond, self.block_expr(then), els))
638 pub fn expr_loop(&self, span: Span, block: P<ast::Block>) -> P<ast::Expr> {
639 self.expr(span, ast::ExprKind::Loop(block, None))
642 pub fn lambda_fn_decl(&self,
644 fn_decl: P<ast::FnDecl>,
646 fn_decl_span: Span) // span of the `|...|` part
648 self.expr(span, ast::ExprKind::Closure(ast::CaptureBy::Ref,
649 ast::IsAsync::NotAsync,
650 ast::Movability::Movable,
658 ids: Vec<ast::Ident>,
661 let fn_decl = self.fn_decl(
662 ids.iter().map(|id| self.param(span, *id, self.ty_infer(span))).collect(),
663 ast::FunctionRetTy::Default(span));
665 // FIXME -- We are using `span` as the span of the `|...|`
666 // part of the lambda, but it probably (maybe?) corresponds to
667 // the entire lambda body. Probably we should extend the API
668 // here, but that's not entirely clear.
669 self.expr(span, ast::ExprKind::Closure(ast::CaptureBy::Ref,
670 ast::IsAsync::NotAsync,
671 ast::Movability::Movable,
677 pub fn lambda0(&self, span: Span, body: P<ast::Expr>) -> P<ast::Expr> {
678 self.lambda(span, Vec::new(), body)
681 pub fn lambda1(&self, span: Span, body: P<ast::Expr>, ident: ast::Ident) -> P<ast::Expr> {
682 self.lambda(span, vec![ident], body)
685 pub fn lambda_stmts(&self,
687 ids: Vec<ast::Ident>,
688 stmts: Vec<ast::Stmt>)
690 self.lambda(span, ids, self.expr_block(self.block(span, stmts)))
692 pub fn lambda_stmts_0(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Expr> {
693 self.lambda0(span, self.expr_block(self.block(span, stmts)))
695 pub fn lambda_stmts_1(&self, span: Span, stmts: Vec<ast::Stmt>,
696 ident: ast::Ident) -> P<ast::Expr> {
697 self.lambda1(span, self.expr_block(self.block(span, stmts)), ident)
700 pub fn param(&self, span: Span, ident: ast::Ident, ty: P<ast::Ty>) -> ast::Param {
701 let arg_pat = self.pat_ident(span, ident);
703 attrs: ThinVec::default(),
704 id: ast::DUMMY_NODE_ID,
708 is_placeholder: false,
712 // FIXME: unused `self`
713 pub fn fn_decl(&self, inputs: Vec<ast::Param>, output: ast::FunctionRetTy) -> P<ast::FnDecl> {
721 pub fn item(&self, span: Span, name: Ident,
722 attrs: Vec<ast::Attribute>, node: ast::ItemKind) -> P<ast::Item> {
723 // FIXME: Would be nice if our generated code didn't violate
724 // Rust coding conventions
728 id: ast::DUMMY_NODE_ID,
730 vis: respan(span.shrink_to_lo(), ast::VisibilityKind::Inherited),
736 pub fn item_fn_poly(&self,
739 inputs: Vec<ast::Param> ,
742 body: P<ast::Block>) -> P<ast::Item> {
746 ast::ItemKind::Fn(self.fn_decl(inputs, ast::FunctionRetTy::Ty(output)),
748 unsafety: ast::Unsafety::Normal,
749 asyncness: dummy_spanned(ast::IsAsync::NotAsync),
750 constness: dummy_spanned(ast::Constness::NotConst),
757 pub fn item_fn(&self,
760 inputs: Vec<ast::Param> ,
773 pub fn variant(&self, span: Span, ident: Ident, tys: Vec<P<ast::Ty>> ) -> ast::Variant {
774 let fields: Vec<_> = tys.into_iter().map(|ty| {
779 vis: respan(span.shrink_to_lo(), ast::VisibilityKind::Inherited),
781 id: ast::DUMMY_NODE_ID,
782 is_placeholder: false,
786 let vdata = if fields.is_empty() {
787 ast::VariantData::Unit(ast::DUMMY_NODE_ID)
789 ast::VariantData::Tuple(fields, ast::DUMMY_NODE_ID)
796 id: ast::DUMMY_NODE_ID,
799 is_placeholder: false,
803 pub fn item_enum_poly(&self, span: Span, name: Ident,
804 enum_definition: ast::EnumDef,
805 generics: Generics) -> P<ast::Item> {
806 self.item(span, name, Vec::new(), ast::ItemKind::Enum(enum_definition, generics))
809 pub fn item_enum(&self, span: Span, name: Ident,
810 enum_definition: ast::EnumDef) -> P<ast::Item> {
811 self.item_enum_poly(span, name, enum_definition,
815 pub fn item_struct(&self, span: Span, name: Ident,
816 struct_def: ast::VariantData) -> P<ast::Item> {
817 self.item_struct_poly(
825 pub fn item_struct_poly(&self, span: Span, name: Ident,
826 struct_def: ast::VariantData, generics: Generics) -> P<ast::Item> {
827 self.item(span, name, Vec::new(), ast::ItemKind::Struct(struct_def, generics))
830 pub fn item_mod(&self, span: Span, inner_span: Span, name: Ident,
831 attrs: Vec<ast::Attribute>,
832 items: Vec<P<ast::Item>>) -> P<ast::Item> {
837 ast::ItemKind::Mod(ast::Mod {
845 pub fn item_extern_crate(&self, span: Span, name: Ident) -> P<ast::Item> {
846 self.item(span, name, Vec::new(), ast::ItemKind::ExternCrate(None))
849 pub fn item_static(&self,
853 mutbl: ast::Mutability,
856 self.item(span, name, Vec::new(), ast::ItemKind::Static(ty, mutbl, expr))
859 pub fn item_const(&self,
865 self.item(span, name, Vec::new(), ast::ItemKind::Const(ty, expr))
868 pub fn item_ty_poly(&self, span: Span, name: Ident, ty: P<ast::Ty>,
869 generics: Generics) -> P<ast::Item> {
870 self.item(span, name, Vec::new(), ast::ItemKind::TyAlias(ty, generics))
873 pub fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> P<ast::Item> {
874 self.item_ty_poly(span, name, ty, Generics::default())
877 pub fn attribute(&self, mi: ast::MetaItem) -> ast::Attribute {
878 attr::mk_attr_outer(mi)
881 pub fn meta_word(&self, sp: Span, w: ast::Name) -> ast::MetaItem {
882 attr::mk_word_item(Ident::new(w, sp))
885 pub fn meta_list_item_word(&self, sp: Span, w: ast::Name) -> ast::NestedMetaItem {
886 attr::mk_nested_word_item(Ident::new(w, sp))
889 pub fn meta_list(&self, sp: Span, name: ast::Name, mis: Vec<ast::NestedMetaItem>)
891 attr::mk_list_item(Ident::new(name, sp), mis)
894 pub fn meta_name_value(&self, span: Span, name: ast::Name, lit_kind: ast::LitKind)
896 attr::mk_name_value_item(Ident::new(name, span), lit_kind, span)
899 pub fn item_use(&self, sp: Span,
900 vis: ast::Visibility, vp: P<ast::UseTree>) -> P<ast::Item> {
902 id: ast::DUMMY_NODE_ID,
903 ident: Ident::invalid(),
905 node: ast::ItemKind::Use(vp),
912 pub fn item_use_simple(&self, sp: Span, vis: ast::Visibility, path: ast::Path) -> P<ast::Item> {
913 self.item_use_simple_(sp, vis, None, path)
916 pub fn item_use_simple_(&self, sp: Span, vis: ast::Visibility,
917 rename: Option<ast::Ident>, path: ast::Path) -> P<ast::Item> {
918 self.item_use(sp, vis, P(ast::UseTree {
921 kind: ast::UseTreeKind::Simple(rename, ast::DUMMY_NODE_ID, ast::DUMMY_NODE_ID),
925 pub fn item_use_list(&self, sp: Span, vis: ast::Visibility,
926 path: Vec<ast::Ident>, imports: &[ast::Ident]) -> P<ast::Item> {
927 let imports = imports.iter().map(|id| {
930 prefix: self.path(sp, vec![*id]),
931 kind: ast::UseTreeKind::Simple(None, ast::DUMMY_NODE_ID, ast::DUMMY_NODE_ID),
932 }, ast::DUMMY_NODE_ID)
935 self.item_use(sp, vis, P(ast::UseTree {
937 prefix: self.path(sp, path),
938 kind: ast::UseTreeKind::Nested(imports),
942 pub fn item_use_glob(&self, sp: Span,
943 vis: ast::Visibility, path: Vec<ast::Ident>) -> P<ast::Item> {
944 self.item_use(sp, vis, P(ast::UseTree {
946 prefix: self.path(sp, path),
947 kind: ast::UseTreeKind::Glob,