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 impl<'a> ExtCtxt<'a> {
13 pub fn path(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path {
14 self.path_all(span, false, strs, vec![], vec![])
16 pub fn path_ident(&self, span: Span, id: ast::Ident) -> ast::Path {
17 self.path(span, vec![id])
19 pub fn path_global(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path {
20 self.path_all(span, true, strs, vec![], vec![])
22 pub fn path_all(&self,
25 mut idents: Vec<ast::Ident> ,
26 args: Vec<ast::GenericArg>,
27 constraints: Vec<ast::AssocTyConstraint> )
29 assert!(!idents.is_empty());
30 let add_root = global && !idents[0].is_path_segment_keyword();
31 let mut segments = Vec::with_capacity(idents.len() + add_root as usize);
33 segments.push(ast::PathSegment::path_root(span));
35 let last_ident = idents.pop().unwrap();
36 segments.extend(idents.into_iter().map(|ident| {
37 ast::PathSegment::from_ident(ident.with_span_pos(span))
39 let args = if !args.is_empty() || !constraints.is_empty() {
40 ast::AngleBracketedArgs { args, constraints, span }.into()
44 segments.push(ast::PathSegment {
45 ident: last_ident.with_span_pos(span),
46 id: ast::DUMMY_NODE_ID,
49 ast::Path { span, segments }
52 /// Constructs a qualified path.
54 /// Constructs a path like `<self_type as trait_path>::ident`.
56 self_type: P<ast::Ty>,
57 trait_path: ast::Path,
59 -> (ast::QSelf, ast::Path) {
60 self.qpath_all(self_type, trait_path, ident, vec![], vec![])
63 /// Constructs a qualified path.
65 /// Constructs a path like `<self_type as trait_path>::ident<'a, T, A = Bar>`.
66 pub fn qpath_all(&self,
67 self_type: P<ast::Ty>,
68 trait_path: ast::Path,
70 args: Vec<ast::GenericArg>,
71 constraints: Vec<ast::AssocTyConstraint>)
72 -> (ast::QSelf, ast::Path) {
73 let mut path = trait_path;
74 let args = if !args.is_empty() || !constraints.is_empty() {
75 ast::AngleBracketedArgs { args, constraints, span: ident.span }.into()
79 path.segments.push(ast::PathSegment { ident, id: ast::DUMMY_NODE_ID, args });
84 position: path.segments.len() - 1
88 pub fn ty_mt(&self, ty: P<ast::Ty>, mutbl: ast::Mutability) -> ast::MutTy {
95 pub fn ty(&self, span: Span, ty: ast::TyKind) -> P<ast::Ty> {
97 id: ast::DUMMY_NODE_ID,
103 pub fn ty_path(&self, path: ast::Path) -> P<ast::Ty> {
104 self.ty(path.span, ast::TyKind::Path(None, path))
107 // Might need to take bounds as an argument in the future, if you ever want
108 // to generate a bounded existential trait type.
109 pub fn ty_ident(&self, span: Span, ident: ast::Ident)
111 self.ty_path(self.path_ident(span, ident))
114 pub fn anon_const(&self, span: Span, expr: ast::ExprKind) -> ast::AnonConst {
116 id: ast::DUMMY_NODE_ID,
118 id: ast::DUMMY_NODE_ID,
121 attrs: ThinVec::new(),
126 pub fn const_ident(&self, span: Span, ident: ast::Ident) -> ast::AnonConst {
127 self.anon_const(span, ast::ExprKind::Path(None, self.path_ident(span, ident)))
130 pub fn ty_rptr(&self,
133 lifetime: Option<ast::Lifetime>,
134 mutbl: ast::Mutability)
137 ast::TyKind::Rptr(lifetime, self.ty_mt(ty, mutbl)))
143 mutbl: ast::Mutability)
146 ast::TyKind::Ptr(self.ty_mt(ty, mutbl)))
149 pub fn ty_infer(&self, span: Span) -> P<ast::Ty> {
150 self.ty(span, ast::TyKind::Infer)
153 pub fn typaram(&self,
156 attrs: Vec<ast::Attribute>,
157 bounds: ast::GenericBounds,
158 default: Option<P<ast::Ty>>) -> ast::GenericParam {
160 ident: ident.with_span_pos(span),
161 id: ast::DUMMY_NODE_ID,
164 kind: ast::GenericParamKind::Type {
167 is_placeholder: false
171 pub fn trait_ref(&self, path: ast::Path) -> ast::TraitRef {
174 ref_id: ast::DUMMY_NODE_ID,
178 pub fn poly_trait_ref(&self, span: Span, path: ast::Path) -> ast::PolyTraitRef {
180 bound_generic_params: Vec::new(),
181 trait_ref: self.trait_ref(path),
186 pub fn trait_bound(&self, path: ast::Path) -> ast::GenericBound {
187 ast::GenericBound::Trait(self.poly_trait_ref(path.span, path),
188 ast::TraitBoundModifier::None)
191 pub fn lifetime(&self, span: Span, ident: ast::Ident) -> ast::Lifetime {
192 ast::Lifetime { id: ast::DUMMY_NODE_ID, ident: ident.with_span_pos(span) }
195 pub fn lifetime_def(&self,
198 attrs: Vec<ast::Attribute>,
199 bounds: ast::GenericBounds)
200 -> ast::GenericParam {
201 let lifetime = self.lifetime(span, ident);
203 ident: lifetime.ident,
207 kind: ast::GenericParamKind::Lifetime,
208 is_placeholder: false
212 pub fn stmt_expr(&self, expr: P<ast::Expr>) -> ast::Stmt {
214 id: ast::DUMMY_NODE_ID,
216 node: ast::StmtKind::Expr(expr),
220 pub fn stmt_semi(&self, expr: P<ast::Expr>) -> ast::Stmt {
222 id: ast::DUMMY_NODE_ID,
224 node: ast::StmtKind::Semi(expr),
228 pub fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident,
229 ex: P<ast::Expr>) -> ast::Stmt {
231 let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Mutable);
232 self.pat_ident_binding_mode(sp, ident, binding_mode)
234 self.pat_ident(sp, ident)
236 let local = P(ast::Local {
240 id: ast::DUMMY_NODE_ID,
242 attrs: ThinVec::new(),
245 id: ast::DUMMY_NODE_ID,
246 node: ast::StmtKind::Local(local),
251 pub fn stmt_let_typed(&self,
259 let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Mutable);
260 self.pat_ident_binding_mode(sp, ident, binding_mode)
262 self.pat_ident(sp, ident)
264 let local = P(ast::Local {
268 id: ast::DUMMY_NODE_ID,
270 attrs: ThinVec::new(),
273 id: ast::DUMMY_NODE_ID,
274 node: ast::StmtKind::Local(local),
279 // Generates `let _: Type;`, which is usually used for type assertions.
280 pub fn stmt_let_type_only(&self, span: Span, ty: P<ast::Ty>) -> ast::Stmt {
281 let local = P(ast::Local {
282 pat: self.pat_wild(span),
285 id: ast::DUMMY_NODE_ID,
287 attrs: ThinVec::new(),
290 id: ast::DUMMY_NODE_ID,
291 node: ast::StmtKind::Local(local),
296 pub fn stmt_item(&self, sp: Span, item: P<ast::Item>) -> ast::Stmt {
298 id: ast::DUMMY_NODE_ID,
299 node: ast::StmtKind::Item(item),
304 pub fn block_expr(&self, expr: P<ast::Expr>) -> P<ast::Block> {
305 self.block(expr.span, vec![ast::Stmt {
306 id: ast::DUMMY_NODE_ID,
308 node: ast::StmtKind::Expr(expr),
311 pub fn block(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Block> {
314 id: ast::DUMMY_NODE_ID,
315 rules: BlockCheckMode::Default,
320 pub fn expr(&self, span: Span, node: ast::ExprKind) -> P<ast::Expr> {
322 id: ast::DUMMY_NODE_ID,
325 attrs: ThinVec::new(),
329 pub fn expr_path(&self, path: ast::Path) -> P<ast::Expr> {
330 self.expr(path.span, ast::ExprKind::Path(None, path))
333 /// Constructs a `QPath` expression.
334 pub fn expr_qpath(&self, span: Span, qself: ast::QSelf, path: ast::Path) -> P<ast::Expr> {
335 self.expr(span, ast::ExprKind::Path(Some(qself), path))
338 pub fn expr_ident(&self, span: Span, id: ast::Ident) -> P<ast::Expr> {
339 self.expr_path(self.path_ident(span, id))
341 pub fn expr_self(&self, span: Span) -> P<ast::Expr> {
342 self.expr_ident(span, Ident::with_dummy_span(kw::SelfLower))
345 pub fn expr_binary(&self, sp: Span, op: ast::BinOpKind,
346 lhs: P<ast::Expr>, rhs: P<ast::Expr>) -> P<ast::Expr> {
347 self.expr(sp, ast::ExprKind::Binary(Spanned { node: op, span: sp }, lhs, rhs))
350 pub fn expr_deref(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
351 self.expr_unary(sp, UnOp::Deref, e)
353 pub fn expr_unary(&self, sp: Span, op: ast::UnOp, e: P<ast::Expr>) -> P<ast::Expr> {
354 self.expr(sp, ast::ExprKind::Unary(op, e))
357 pub fn expr_field_access(
358 &self, sp: Span, expr: P<ast::Expr>, ident: ast::Ident,
360 self.expr(sp, ast::ExprKind::Field(expr, ident.with_span_pos(sp)))
362 pub fn expr_tup_field_access(&self, sp: Span, expr: P<ast::Expr>, idx: usize) -> P<ast::Expr> {
363 let ident = Ident::new(sym::integer(idx), sp);
364 self.expr(sp, ast::ExprKind::Field(expr, ident))
366 pub fn expr_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
367 self.expr(sp, ast::ExprKind::AddrOf(ast::Mutability::Immutable, e))
369 pub fn expr_mut_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
370 self.expr(sp, ast::ExprKind::AddrOf(ast::Mutability::Mutable, e))
374 &self, span: Span, expr: P<ast::Expr>, args: Vec<P<ast::Expr>>,
376 self.expr(span, ast::ExprKind::Call(expr, args))
378 pub fn expr_call_ident(&self, span: Span, id: ast::Ident,
379 args: Vec<P<ast::Expr>>) -> P<ast::Expr> {
380 self.expr(span, ast::ExprKind::Call(self.expr_ident(span, id), args))
382 pub fn expr_call_global(&self, sp: Span, fn_path: Vec<ast::Ident> ,
383 args: Vec<P<ast::Expr>> ) -> P<ast::Expr> {
384 let pathexpr = self.expr_path(self.path_global(sp, fn_path));
385 self.expr_call(sp, pathexpr, args)
387 pub fn expr_method_call(&self, span: Span,
390 mut args: Vec<P<ast::Expr>> ) -> P<ast::Expr> {
391 args.insert(0, expr);
392 let segment = ast::PathSegment::from_ident(ident.with_span_pos(span));
393 self.expr(span, ast::ExprKind::MethodCall(segment, args))
395 pub fn expr_block(&self, b: P<ast::Block>) -> P<ast::Expr> {
396 self.expr(b.span, ast::ExprKind::Block(b, None))
398 pub fn field_imm(&self, span: Span, ident: Ident, e: P<ast::Expr>) -> ast::Field {
400 ident: ident.with_span_pos(span),
404 attrs: ThinVec::new(),
405 id: ast::DUMMY_NODE_ID,
406 is_placeholder: false,
410 &self, span: Span, path: ast::Path, fields: Vec<ast::Field>
412 self.expr(span, ast::ExprKind::Struct(path, fields, None))
414 pub fn expr_struct_ident(&self, span: Span,
415 id: ast::Ident, fields: Vec<ast::Field>) -> P<ast::Expr> {
416 self.expr_struct(span, self.path_ident(span, id), fields)
419 pub fn expr_lit(&self, span: Span, lit_kind: ast::LitKind) -> P<ast::Expr> {
420 let lit = ast::Lit::from_lit_kind(lit_kind, span);
421 self.expr(span, ast::ExprKind::Lit(lit))
423 pub fn expr_usize(&self, span: Span, i: usize) -> P<ast::Expr> {
424 self.expr_lit(span, ast::LitKind::Int(i as u128,
425 ast::LitIntType::Unsigned(ast::UintTy::Usize)))
427 pub fn expr_isize(&self, sp: Span, i: isize) -> P<ast::Expr> {
429 let i = (-i) as u128;
430 let lit_ty = ast::LitIntType::Signed(ast::IntTy::Isize);
431 let lit = self.expr_lit(sp, ast::LitKind::Int(i, lit_ty));
432 self.expr_unary(sp, ast::UnOp::Neg, lit)
434 self.expr_lit(sp, ast::LitKind::Int(i as u128,
435 ast::LitIntType::Signed(ast::IntTy::Isize)))
438 pub fn expr_u32(&self, sp: Span, u: u32) -> P<ast::Expr> {
439 self.expr_lit(sp, ast::LitKind::Int(u as u128,
440 ast::LitIntType::Unsigned(ast::UintTy::U32)))
442 pub fn expr_u16(&self, sp: Span, u: u16) -> P<ast::Expr> {
443 self.expr_lit(sp, ast::LitKind::Int(u as u128,
444 ast::LitIntType::Unsigned(ast::UintTy::U16)))
446 pub fn expr_u8(&self, sp: Span, u: u8) -> P<ast::Expr> {
447 self.expr_lit(sp, ast::LitKind::Int(u as u128, ast::LitIntType::Unsigned(ast::UintTy::U8)))
449 pub fn expr_bool(&self, sp: Span, value: bool) -> P<ast::Expr> {
450 self.expr_lit(sp, ast::LitKind::Bool(value))
453 pub fn expr_vec(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
454 self.expr(sp, ast::ExprKind::Array(exprs))
456 pub fn expr_vec_ng(&self, sp: Span) -> P<ast::Expr> {
457 self.expr_call_global(sp, self.std_path(&[sym::vec, sym::Vec, sym::new]),
460 pub fn expr_vec_slice(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
461 self.expr_addr_of(sp, self.expr_vec(sp, exprs))
463 pub fn expr_str(&self, sp: Span, s: Symbol) -> P<ast::Expr> {
464 self.expr_lit(sp, ast::LitKind::Str(s, ast::StrStyle::Cooked))
467 pub fn expr_cast(&self, sp: Span, expr: P<ast::Expr>, ty: P<ast::Ty>) -> P<ast::Expr> {
468 self.expr(sp, ast::ExprKind::Cast(expr, ty))
471 pub fn expr_some(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
472 let some = self.std_path(&[sym::option, sym::Option, sym::Some]);
473 self.expr_call_global(sp, some, vec![expr])
476 pub fn expr_none(&self, sp: Span) -> P<ast::Expr> {
477 let none = self.std_path(&[sym::option, sym::Option, sym::None]);
478 let none = self.path_global(sp, none);
482 pub fn expr_break(&self, sp: Span) -> P<ast::Expr> {
483 self.expr(sp, ast::ExprKind::Break(None, None))
486 pub fn expr_tuple(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
487 self.expr(sp, ast::ExprKind::Tup(exprs))
490 pub fn expr_fail(&self, span: Span, msg: Symbol) -> P<ast::Expr> {
491 let loc = self.source_map().lookup_char_pos(span.lo());
492 let expr_file = self.expr_str(span, Symbol::intern(&loc.file.name.to_string()));
493 let expr_line = self.expr_u32(span, loc.line as u32);
494 let expr_col = self.expr_u32(span, loc.col.to_usize() as u32 + 1);
495 let expr_loc_tuple = self.expr_tuple(span, vec![expr_file, expr_line, expr_col]);
496 let expr_loc_ptr = self.expr_addr_of(span, expr_loc_tuple);
497 self.expr_call_global(
499 [sym::std, sym::rt, sym::begin_panic].iter().map(|s| Ident::new(*s, span)).collect(),
501 self.expr_str(span, msg),
505 pub fn expr_unreachable(&self, span: Span) -> P<ast::Expr> {
506 self.expr_fail(span, Symbol::intern("internal error: entered unreachable code"))
509 pub fn expr_ok(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
510 let ok = self.std_path(&[sym::result, sym::Result, sym::Ok]);
511 self.expr_call_global(sp, ok, vec![expr])
514 pub fn expr_err(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
515 let err = self.std_path(&[sym::result, sym::Result, sym::Err]);
516 self.expr_call_global(sp, err, vec![expr])
519 pub fn expr_try(&self, sp: Span, head: P<ast::Expr>) -> P<ast::Expr> {
520 let ok = self.std_path(&[sym::result, sym::Result, sym::Ok]);
521 let ok_path = self.path_global(sp, ok);
522 let err = self.std_path(&[sym::result, sym::Result, sym::Err]);
523 let err_path = self.path_global(sp, err);
525 let binding_variable = self.ident_of("__try_var", sp);
526 let binding_pat = self.pat_ident(sp, binding_variable);
527 let binding_expr = self.expr_ident(sp, binding_variable);
529 // `Ok(__try_var)` pattern
530 let ok_pat = self.pat_tuple_struct(sp, ok_path, vec![binding_pat.clone()]);
532 // `Err(__try_var)` (pattern and expression respectively)
533 let err_pat = self.pat_tuple_struct(sp, err_path.clone(), vec![binding_pat]);
534 let err_inner_expr = self.expr_call(sp, self.expr_path(err_path),
535 vec![binding_expr.clone()]);
536 // `return Err(__try_var)`
537 let err_expr = self.expr(sp, ast::ExprKind::Ret(Some(err_inner_expr)));
539 // `Ok(__try_var) => __try_var`
540 let ok_arm = self.arm(sp, ok_pat, binding_expr);
541 // `Err(__try_var) => return Err(__try_var)`
542 let err_arm = self.arm(sp, err_pat, err_expr);
544 // `match head { Ok() => ..., Err() => ... }`
545 self.expr_match(sp, head, vec![ok_arm, err_arm])
549 pub fn pat(&self, span: Span, pat: PatKind) -> P<ast::Pat> {
550 P(ast::Pat { id: ast::DUMMY_NODE_ID, node: pat, span })
552 pub fn pat_wild(&self, span: Span) -> P<ast::Pat> {
553 self.pat(span, PatKind::Wild)
555 pub fn pat_lit(&self, span: Span, expr: P<ast::Expr>) -> P<ast::Pat> {
556 self.pat(span, PatKind::Lit(expr))
558 pub fn pat_ident(&self, span: Span, ident: ast::Ident) -> P<ast::Pat> {
559 let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Immutable);
560 self.pat_ident_binding_mode(span, ident, binding_mode)
563 pub fn pat_ident_binding_mode(&self,
566 bm: ast::BindingMode) -> P<ast::Pat> {
567 let pat = PatKind::Ident(bm, ident.with_span_pos(span), None);
570 pub fn pat_path(&self, span: Span, path: ast::Path) -> P<ast::Pat> {
571 self.pat(span, PatKind::Path(None, path))
573 pub fn pat_tuple_struct(&self, span: Span, path: ast::Path,
574 subpats: Vec<P<ast::Pat>>) -> P<ast::Pat> {
575 self.pat(span, PatKind::TupleStruct(path, subpats))
577 pub fn pat_struct(&self, span: Span, path: ast::Path,
578 field_pats: Vec<ast::FieldPat>) -> P<ast::Pat> {
579 self.pat(span, PatKind::Struct(path, field_pats, false))
581 pub fn pat_tuple(&self, span: Span, pats: Vec<P<ast::Pat>>) -> P<ast::Pat> {
582 self.pat(span, PatKind::Tuple(pats))
585 pub fn pat_some(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
586 let some = self.std_path(&[sym::option, sym::Option, sym::Some]);
587 let path = self.path_global(span, some);
588 self.pat_tuple_struct(span, path, vec![pat])
591 pub fn pat_none(&self, span: Span) -> P<ast::Pat> {
592 let some = self.std_path(&[sym::option, sym::Option, sym::None]);
593 let path = self.path_global(span, some);
594 self.pat_path(span, path)
597 pub fn pat_ok(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
598 let some = self.std_path(&[sym::result, sym::Result, sym::Ok]);
599 let path = self.path_global(span, some);
600 self.pat_tuple_struct(span, path, vec![pat])
603 pub fn pat_err(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
604 let some = self.std_path(&[sym::result, sym::Result, sym::Err]);
605 let path = self.path_global(span, some);
606 self.pat_tuple_struct(span, path, vec![pat])
609 pub fn arm(&self, span: Span, pat: P<ast::Pat>, expr: P<ast::Expr>) -> ast::Arm {
616 id: ast::DUMMY_NODE_ID,
617 is_placeholder: false,
621 pub fn arm_unreachable(&self, span: Span) -> ast::Arm {
622 self.arm(span, self.pat_wild(span), self.expr_unreachable(span))
625 pub fn expr_match(&self, span: Span, arg: P<ast::Expr>, arms: Vec<ast::Arm>) -> P<Expr> {
626 self.expr(span, ast::ExprKind::Match(arg, arms))
629 pub fn expr_if(&self, span: Span, cond: P<ast::Expr>,
630 then: P<ast::Expr>, els: Option<P<ast::Expr>>) -> P<ast::Expr> {
631 let els = els.map(|x| self.expr_block(self.block_expr(x)));
632 self.expr(span, ast::ExprKind::If(cond, self.block_expr(then), els))
635 pub fn expr_loop(&self, span: Span, block: P<ast::Block>) -> P<ast::Expr> {
636 self.expr(span, ast::ExprKind::Loop(block, None))
639 pub fn lambda_fn_decl(&self,
641 fn_decl: P<ast::FnDecl>,
643 fn_decl_span: Span) // span of the `|...|` part
645 self.expr(span, ast::ExprKind::Closure(ast::CaptureBy::Ref,
646 ast::IsAsync::NotAsync,
647 ast::Movability::Movable,
655 ids: Vec<ast::Ident>,
658 let fn_decl = self.fn_decl(
659 ids.iter().map(|id| self.param(span, *id, self.ty_infer(span))).collect(),
660 ast::FunctionRetTy::Default(span));
662 // FIXME -- We are using `span` as the span of the `|...|`
663 // part of the lambda, but it probably (maybe?) corresponds to
664 // the entire lambda body. Probably we should extend the API
665 // here, but that's not entirely clear.
666 self.expr(span, ast::ExprKind::Closure(ast::CaptureBy::Ref,
667 ast::IsAsync::NotAsync,
668 ast::Movability::Movable,
674 pub fn lambda0(&self, span: Span, body: P<ast::Expr>) -> P<ast::Expr> {
675 self.lambda(span, Vec::new(), body)
678 pub fn lambda1(&self, span: Span, body: P<ast::Expr>, ident: ast::Ident) -> P<ast::Expr> {
679 self.lambda(span, vec![ident], body)
682 pub fn lambda_stmts(&self,
684 ids: Vec<ast::Ident>,
685 stmts: Vec<ast::Stmt>)
687 self.lambda(span, ids, self.expr_block(self.block(span, stmts)))
689 pub fn lambda_stmts_0(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Expr> {
690 self.lambda0(span, self.expr_block(self.block(span, stmts)))
692 pub fn lambda_stmts_1(&self, span: Span, stmts: Vec<ast::Stmt>,
693 ident: ast::Ident) -> P<ast::Expr> {
694 self.lambda1(span, self.expr_block(self.block(span, stmts)), ident)
697 pub fn param(&self, span: Span, ident: ast::Ident, ty: P<ast::Ty>) -> ast::Param {
698 let arg_pat = self.pat_ident(span, ident);
700 attrs: ThinVec::default(),
701 id: ast::DUMMY_NODE_ID,
705 is_placeholder: false,
709 // FIXME: unused `self`
710 pub fn fn_decl(&self, inputs: Vec<ast::Param>, output: ast::FunctionRetTy) -> P<ast::FnDecl> {
718 pub fn item(&self, span: Span, name: Ident,
719 attrs: Vec<ast::Attribute>, node: ast::ItemKind) -> P<ast::Item> {
720 // FIXME: Would be nice if our generated code didn't violate
721 // Rust coding conventions
725 id: ast::DUMMY_NODE_ID,
727 vis: respan(span.shrink_to_lo(), ast::VisibilityKind::Inherited),
733 pub fn item_fn_poly(&self,
736 inputs: Vec<ast::Param> ,
739 body: P<ast::Block>) -> P<ast::Item> {
743 ast::ItemKind::Fn(self.fn_decl(inputs, ast::FunctionRetTy::Ty(output)),
745 unsafety: ast::Unsafety::Normal,
746 asyncness: dummy_spanned(ast::IsAsync::NotAsync),
747 constness: dummy_spanned(ast::Constness::NotConst),
754 pub fn item_fn(&self,
757 inputs: Vec<ast::Param> ,
770 pub fn variant(&self, span: Span, ident: Ident, tys: Vec<P<ast::Ty>> ) -> ast::Variant {
771 let fields: Vec<_> = tys.into_iter().map(|ty| {
776 vis: respan(span.shrink_to_lo(), ast::VisibilityKind::Inherited),
778 id: ast::DUMMY_NODE_ID,
779 is_placeholder: false,
783 let vdata = if fields.is_empty() {
784 ast::VariantData::Unit(ast::DUMMY_NODE_ID)
786 ast::VariantData::Tuple(fields, ast::DUMMY_NODE_ID)
793 id: ast::DUMMY_NODE_ID,
796 is_placeholder: false,
800 pub fn item_enum_poly(&self, span: Span, name: Ident,
801 enum_definition: ast::EnumDef,
802 generics: Generics) -> P<ast::Item> {
803 self.item(span, name, Vec::new(), ast::ItemKind::Enum(enum_definition, generics))
806 pub fn item_enum(&self, span: Span, name: Ident,
807 enum_definition: ast::EnumDef) -> P<ast::Item> {
808 self.item_enum_poly(span, name, enum_definition,
812 pub fn item_struct(&self, span: Span, name: Ident,
813 struct_def: ast::VariantData) -> P<ast::Item> {
814 self.item_struct_poly(
822 pub fn item_struct_poly(&self, span: Span, name: Ident,
823 struct_def: ast::VariantData, generics: Generics) -> P<ast::Item> {
824 self.item(span, name, Vec::new(), ast::ItemKind::Struct(struct_def, generics))
827 pub fn item_mod(&self, span: Span, inner_span: Span, name: Ident,
828 attrs: Vec<ast::Attribute>,
829 items: Vec<P<ast::Item>>) -> P<ast::Item> {
834 ast::ItemKind::Mod(ast::Mod {
842 pub fn item_extern_crate(&self, span: Span, name: Ident) -> P<ast::Item> {
843 self.item(span, name, Vec::new(), ast::ItemKind::ExternCrate(None))
846 pub fn item_static(&self,
850 mutbl: ast::Mutability,
853 self.item(span, name, Vec::new(), ast::ItemKind::Static(ty, mutbl, expr))
856 pub fn item_const(&self,
862 self.item(span, name, Vec::new(), ast::ItemKind::Const(ty, expr))
865 pub fn item_ty_poly(&self, span: Span, name: Ident, ty: P<ast::Ty>,
866 generics: Generics) -> P<ast::Item> {
867 self.item(span, name, Vec::new(), ast::ItemKind::TyAlias(ty, generics))
870 pub fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> P<ast::Item> {
871 self.item_ty_poly(span, name, ty, Generics::default())
874 pub fn attribute(&self, mi: ast::MetaItem) -> ast::Attribute {
875 attr::mk_attr_outer(mi)
878 pub fn meta_word(&self, sp: Span, w: ast::Name) -> ast::MetaItem {
879 attr::mk_word_item(Ident::new(w, sp))
882 pub fn meta_list_item_word(&self, sp: Span, w: ast::Name) -> ast::NestedMetaItem {
883 attr::mk_nested_word_item(Ident::new(w, sp))
886 pub fn meta_list(&self, sp: Span, name: ast::Name, mis: Vec<ast::NestedMetaItem>)
888 attr::mk_list_item(Ident::new(name, sp), mis)
891 pub fn meta_name_value(&self, span: Span, name: ast::Name, lit_kind: ast::LitKind)
893 attr::mk_name_value_item(Ident::new(name, span), lit_kind, span)
896 pub fn item_use(&self, sp: Span,
897 vis: ast::Visibility, vp: P<ast::UseTree>) -> P<ast::Item> {
899 id: ast::DUMMY_NODE_ID,
900 ident: Ident::invalid(),
902 node: ast::ItemKind::Use(vp),
909 pub fn item_use_simple(&self, sp: Span, vis: ast::Visibility, path: ast::Path) -> P<ast::Item> {
910 self.item_use_simple_(sp, vis, None, path)
913 pub fn item_use_simple_(&self, sp: Span, vis: ast::Visibility,
914 rename: Option<ast::Ident>, path: ast::Path) -> P<ast::Item> {
915 self.item_use(sp, vis, P(ast::UseTree {
918 kind: ast::UseTreeKind::Simple(rename, ast::DUMMY_NODE_ID, ast::DUMMY_NODE_ID),
922 pub fn item_use_list(&self, sp: Span, vis: ast::Visibility,
923 path: Vec<ast::Ident>, imports: &[ast::Ident]) -> P<ast::Item> {
924 let imports = imports.iter().map(|id| {
927 prefix: self.path(sp, vec![*id]),
928 kind: ast::UseTreeKind::Simple(None, ast::DUMMY_NODE_ID, ast::DUMMY_NODE_ID),
929 }, ast::DUMMY_NODE_ID)
932 self.item_use(sp, vis, P(ast::UseTree {
934 prefix: self.path(sp, path),
935 kind: ast::UseTreeKind::Nested(imports),
939 pub fn item_use_glob(&self, sp: Span,
940 vis: ast::Visibility, path: Vec<ast::Ident>) -> P<ast::Item> {
941 self.item_use(sp, vis, P(ast::UseTree {
943 prefix: self.path(sp, path),
944 kind: ast::UseTreeKind::Glob,