1208 lines
45 KiB
Rust
1208 lines
45 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use rustc_target::spec::abi::Abi;
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use ast::{self, Ident, Generics, Expr, BlockCheckMode, UnOp, PatKind};
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use attr;
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use syntax_pos::{Pos, Span, DUMMY_SP};
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use codemap::{dummy_spanned, respan, Spanned};
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use ext::base::ExtCtxt;
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use ptr::P;
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use symbol::{Symbol, keywords};
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// Transitional re-exports so qquote can find the paths it is looking for
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mod syntax {
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pub use ext;
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pub use parse;
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}
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pub trait AstBuilder {
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// paths
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fn path(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path;
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fn path_ident(&self, span: Span, id: ast::Ident) -> ast::Path;
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fn path_global(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path;
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fn path_all(&self, sp: Span,
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global: bool,
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idents: Vec<ast::Ident> ,
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lifetimes: Vec<ast::Lifetime>,
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types: Vec<P<ast::Ty>>,
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bindings: Vec<ast::TypeBinding> )
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-> ast::Path;
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fn qpath(&self, self_type: P<ast::Ty>,
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trait_path: ast::Path,
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ident: ast::Ident)
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-> (ast::QSelf, ast::Path);
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fn qpath_all(&self, self_type: P<ast::Ty>,
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trait_path: ast::Path,
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ident: ast::Ident,
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lifetimes: Vec<ast::Lifetime>,
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types: Vec<P<ast::Ty>>,
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bindings: Vec<ast::TypeBinding>)
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-> (ast::QSelf, ast::Path);
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// types
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fn ty_mt(&self, ty: P<ast::Ty>, mutbl: ast::Mutability) -> ast::MutTy;
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fn ty(&self, span: Span, ty: ast::TyKind) -> P<ast::Ty>;
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fn ty_path(&self, path: ast::Path) -> P<ast::Ty>;
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fn ty_ident(&self, span: Span, idents: ast::Ident) -> P<ast::Ty>;
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fn ty_rptr(&self, span: Span,
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ty: P<ast::Ty>,
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lifetime: Option<ast::Lifetime>,
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mutbl: ast::Mutability) -> P<ast::Ty>;
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fn ty_ptr(&self, span: Span,
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ty: P<ast::Ty>,
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mutbl: ast::Mutability) -> P<ast::Ty>;
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fn ty_option(&self, ty: P<ast::Ty>) -> P<ast::Ty>;
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fn ty_infer(&self, sp: Span) -> P<ast::Ty>;
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fn typaram(&self,
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span: Span,
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id: ast::Ident,
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attrs: Vec<ast::Attribute>,
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bounds: ast::TyParamBounds,
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default: Option<P<ast::Ty>>) -> ast::TyParam;
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fn trait_ref(&self, path: ast::Path) -> ast::TraitRef;
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fn poly_trait_ref(&self, span: Span, path: ast::Path) -> ast::PolyTraitRef;
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fn typarambound(&self, path: ast::Path) -> ast::TyParamBound;
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fn lifetime(&self, span: Span, ident: ast::Ident) -> ast::Lifetime;
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fn lifetime_def(&self,
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span: Span,
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ident: ast::Ident,
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attrs: Vec<ast::Attribute>,
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bounds: Vec<ast::Lifetime>)
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-> ast::LifetimeDef;
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// statements
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fn stmt_expr(&self, expr: P<ast::Expr>) -> ast::Stmt;
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fn stmt_semi(&self, expr: P<ast::Expr>) -> ast::Stmt;
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fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident, ex: P<ast::Expr>) -> ast::Stmt;
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fn stmt_let_typed(&self,
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sp: Span,
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mutbl: bool,
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ident: ast::Ident,
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typ: P<ast::Ty>,
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ex: P<ast::Expr>)
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-> ast::Stmt;
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fn stmt_let_type_only(&self, span: Span, ty: P<ast::Ty>) -> ast::Stmt;
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fn stmt_item(&self, sp: Span, item: P<ast::Item>) -> ast::Stmt;
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// blocks
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fn block(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Block>;
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fn block_expr(&self, expr: P<ast::Expr>) -> P<ast::Block>;
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// expressions
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fn expr(&self, span: Span, node: ast::ExprKind) -> P<ast::Expr>;
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fn expr_path(&self, path: ast::Path) -> P<ast::Expr>;
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fn expr_qpath(&self, span: Span, qself: ast::QSelf, path: ast::Path) -> P<ast::Expr>;
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fn expr_ident(&self, span: Span, id: ast::Ident) -> P<ast::Expr>;
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fn expr_self(&self, span: Span) -> P<ast::Expr>;
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fn expr_binary(&self, sp: Span, op: ast::BinOpKind,
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lhs: P<ast::Expr>, rhs: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_deref(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_unary(&self, sp: Span, op: ast::UnOp, e: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_mut_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_field_access(&self, span: Span, expr: P<ast::Expr>, ident: ast::Ident) -> P<ast::Expr>;
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fn expr_tup_field_access(&self, sp: Span, expr: P<ast::Expr>,
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idx: usize) -> P<ast::Expr>;
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fn expr_call(&self, span: Span, expr: P<ast::Expr>, args: Vec<P<ast::Expr>>) -> P<ast::Expr>;
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fn expr_call_ident(&self, span: Span, id: ast::Ident, args: Vec<P<ast::Expr>>) -> P<ast::Expr>;
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fn expr_call_global(&self, sp: Span, fn_path: Vec<ast::Ident>,
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args: Vec<P<ast::Expr>> ) -> P<ast::Expr>;
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fn expr_method_call(&self, span: Span,
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expr: P<ast::Expr>, ident: ast::Ident,
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args: Vec<P<ast::Expr>> ) -> P<ast::Expr>;
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fn expr_block(&self, b: P<ast::Block>) -> P<ast::Expr>;
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fn expr_cast(&self, sp: Span, expr: P<ast::Expr>, ty: P<ast::Ty>) -> P<ast::Expr>;
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fn field_imm(&self, span: Span, name: Ident, e: P<ast::Expr>) -> ast::Field;
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fn expr_struct(&self, span: Span, path: ast::Path, fields: Vec<ast::Field>) -> P<ast::Expr>;
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fn expr_struct_ident(&self, span: Span, id: ast::Ident,
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fields: Vec<ast::Field>) -> P<ast::Expr>;
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fn expr_lit(&self, sp: Span, lit: ast::LitKind) -> P<ast::Expr>;
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fn expr_usize(&self, span: Span, i: usize) -> P<ast::Expr>;
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fn expr_isize(&self, sp: Span, i: isize) -> P<ast::Expr>;
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fn expr_u8(&self, sp: Span, u: u8) -> P<ast::Expr>;
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fn expr_u16(&self, sp: Span, u: u16) -> P<ast::Expr>;
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fn expr_u32(&self, sp: Span, u: u32) -> P<ast::Expr>;
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fn expr_bool(&self, sp: Span, value: bool) -> P<ast::Expr>;
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fn expr_vec(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr>;
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fn expr_vec_ng(&self, sp: Span) -> P<ast::Expr>;
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fn expr_vec_slice(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr>;
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fn expr_str(&self, sp: Span, s: Symbol) -> P<ast::Expr>;
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fn expr_some(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_none(&self, sp: Span) -> P<ast::Expr>;
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fn expr_break(&self, sp: Span) -> P<ast::Expr>;
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fn expr_tuple(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr>;
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fn expr_fail(&self, span: Span, msg: Symbol) -> P<ast::Expr>;
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fn expr_unreachable(&self, span: Span) -> P<ast::Expr>;
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fn expr_ok(&self, span: Span, expr: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_err(&self, span: Span, expr: P<ast::Expr>) -> P<ast::Expr>;
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fn expr_try(&self, span: Span, head: P<ast::Expr>) -> P<ast::Expr>;
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fn pat(&self, span: Span, pat: PatKind) -> P<ast::Pat>;
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fn pat_wild(&self, span: Span) -> P<ast::Pat>;
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fn pat_lit(&self, span: Span, expr: P<ast::Expr>) -> P<ast::Pat>;
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fn pat_ident(&self, span: Span, ident: ast::Ident) -> P<ast::Pat>;
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fn pat_ident_binding_mode(&self,
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span: Span,
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ident: ast::Ident,
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bm: ast::BindingMode) -> P<ast::Pat>;
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fn pat_path(&self, span: Span, path: ast::Path) -> P<ast::Pat>;
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fn pat_tuple_struct(&self, span: Span, path: ast::Path,
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subpats: Vec<P<ast::Pat>>) -> P<ast::Pat>;
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fn pat_struct(&self, span: Span, path: ast::Path,
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field_pats: Vec<Spanned<ast::FieldPat>>) -> P<ast::Pat>;
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fn pat_tuple(&self, span: Span, pats: Vec<P<ast::Pat>>) -> P<ast::Pat>;
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fn pat_some(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat>;
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fn pat_none(&self, span: Span) -> P<ast::Pat>;
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fn pat_ok(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat>;
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fn pat_err(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat>;
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fn arm(&self, span: Span, pats: Vec<P<ast::Pat>>, expr: P<ast::Expr>) -> ast::Arm;
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fn arm_unreachable(&self, span: Span) -> ast::Arm;
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fn expr_match(&self, span: Span, arg: P<ast::Expr>, arms: Vec<ast::Arm> ) -> P<ast::Expr>;
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fn expr_if(&self, span: Span,
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cond: P<ast::Expr>, then: P<ast::Expr>, els: Option<P<ast::Expr>>) -> P<ast::Expr>;
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fn expr_loop(&self, span: Span, block: P<ast::Block>) -> P<ast::Expr>;
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fn lambda_fn_decl(&self,
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span: Span,
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fn_decl: P<ast::FnDecl>,
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body: P<ast::Expr>,
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fn_decl_span: Span)
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-> P<ast::Expr>;
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fn lambda(&self, span: Span, ids: Vec<ast::Ident>, body: P<ast::Expr>) -> P<ast::Expr>;
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fn lambda0(&self, span: Span, body: P<ast::Expr>) -> P<ast::Expr>;
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fn lambda1(&self, span: Span, body: P<ast::Expr>, ident: ast::Ident) -> P<ast::Expr>;
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fn lambda_stmts(&self, span: Span, ids: Vec<ast::Ident>,
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blk: Vec<ast::Stmt>) -> P<ast::Expr>;
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fn lambda_stmts_0(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Expr>;
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fn lambda_stmts_1(&self, span: Span, stmts: Vec<ast::Stmt>,
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ident: ast::Ident) -> P<ast::Expr>;
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// items
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fn item(&self, span: Span,
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name: Ident, attrs: Vec<ast::Attribute> , node: ast::ItemKind) -> P<ast::Item>;
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fn arg(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> ast::Arg;
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// FIXME unused self
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fn fn_decl(&self, inputs: Vec<ast::Arg> , output: ast::FunctionRetTy) -> P<ast::FnDecl>;
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fn item_fn_poly(&self,
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span: Span,
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name: Ident,
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inputs: Vec<ast::Arg> ,
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output: P<ast::Ty>,
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generics: Generics,
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body: P<ast::Block>) -> P<ast::Item>;
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fn item_fn(&self,
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span: Span,
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name: Ident,
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inputs: Vec<ast::Arg> ,
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output: P<ast::Ty>,
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body: P<ast::Block>) -> P<ast::Item>;
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fn variant(&self, span: Span, name: Ident, tys: Vec<P<ast::Ty>> ) -> ast::Variant;
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fn item_enum_poly(&self,
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span: Span,
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name: Ident,
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enum_definition: ast::EnumDef,
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generics: Generics) -> P<ast::Item>;
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fn item_enum(&self, span: Span, name: Ident, enum_def: ast::EnumDef) -> P<ast::Item>;
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fn item_struct_poly(&self,
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span: Span,
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name: Ident,
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struct_def: ast::VariantData,
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generics: Generics) -> P<ast::Item>;
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fn item_struct(&self, span: Span, name: Ident, struct_def: ast::VariantData) -> P<ast::Item>;
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fn item_mod(&self, span: Span, inner_span: Span,
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name: Ident, attrs: Vec<ast::Attribute>,
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items: Vec<P<ast::Item>>) -> P<ast::Item>;
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fn item_extern_crate(&self, span: Span, name: Ident) -> P<ast::Item>;
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fn item_static(&self,
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span: Span,
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name: Ident,
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ty: P<ast::Ty>,
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mutbl: ast::Mutability,
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expr: P<ast::Expr>)
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-> P<ast::Item>;
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fn item_const(&self,
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span: Span,
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name: Ident,
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ty: P<ast::Ty>,
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expr: P<ast::Expr>)
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-> P<ast::Item>;
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fn item_ty_poly(&self,
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span: Span,
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name: Ident,
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ty: P<ast::Ty>,
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generics: Generics) -> P<ast::Item>;
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fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> P<ast::Item>;
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fn attribute(&self, sp: Span, mi: ast::MetaItem) -> ast::Attribute;
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fn meta_word(&self, sp: Span, w: ast::Name) -> ast::MetaItem;
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fn meta_list_item_word(&self, sp: Span, w: ast::Name) -> ast::NestedMetaItem;
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fn meta_list(&self,
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sp: Span,
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name: ast::Name,
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mis: Vec<ast::NestedMetaItem> )
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-> ast::MetaItem;
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fn meta_name_value(&self,
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sp: Span,
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name: ast::Name,
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value: ast::LitKind)
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-> ast::MetaItem;
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fn item_use(&self, sp: Span,
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vis: ast::Visibility, vp: P<ast::UseTree>) -> P<ast::Item>;
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fn item_use_simple(&self, sp: Span, vis: ast::Visibility, path: ast::Path) -> P<ast::Item>;
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fn item_use_simple_(&self, sp: Span, vis: ast::Visibility,
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ident: Option<ast::Ident>, path: ast::Path) -> P<ast::Item>;
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fn item_use_list(&self, sp: Span, vis: ast::Visibility,
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path: Vec<ast::Ident>, imports: &[ast::Ident]) -> P<ast::Item>;
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fn item_use_glob(&self, sp: Span,
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vis: ast::Visibility, path: Vec<ast::Ident>) -> P<ast::Item>;
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}
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impl<'a> AstBuilder for ExtCtxt<'a> {
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fn path(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path {
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self.path_all(span, false, strs, Vec::new(), Vec::new(), Vec::new())
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}
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fn path_ident(&self, span: Span, id: ast::Ident) -> ast::Path {
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self.path(span, vec![id])
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}
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fn path_global(&self, span: Span, strs: Vec<ast::Ident> ) -> ast::Path {
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self.path_all(span, true, strs, Vec::new(), Vec::new(), Vec::new())
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}
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fn path_all(&self,
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span: Span,
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global: bool,
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mut idents: Vec<ast::Ident> ,
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lifetimes: Vec<ast::Lifetime>,
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types: Vec<P<ast::Ty>>,
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bindings: Vec<ast::TypeBinding> )
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-> ast::Path {
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let last_ident = idents.pop().unwrap();
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let mut segments: Vec<ast::PathSegment> = Vec::new();
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segments.extend(idents.into_iter().map(|ident| {
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ast::PathSegment::from_ident(ident.with_span_pos(span))
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}));
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let parameters = if !lifetimes.is_empty() || !types.is_empty() || !bindings.is_empty() {
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ast::AngleBracketedParameterData { lifetimes, types, bindings, span }.into()
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} else {
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None
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};
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segments.push(ast::PathSegment { ident: last_ident.with_span_pos(span), parameters });
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let mut path = ast::Path { span, segments };
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if global {
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if let Some(seg) = path.make_root() {
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path.segments.insert(0, seg);
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}
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}
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path
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}
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/// Constructs a qualified path.
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///
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/// Constructs a path like `<self_type as trait_path>::ident`.
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fn qpath(&self,
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self_type: P<ast::Ty>,
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trait_path: ast::Path,
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ident: ast::Ident)
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-> (ast::QSelf, ast::Path) {
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self.qpath_all(self_type, trait_path, ident, vec![], vec![], vec![])
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}
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/// Constructs a qualified path.
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///
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/// Constructs a path like `<self_type as trait_path>::ident<'a, T, A=Bar>`.
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fn qpath_all(&self,
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self_type: P<ast::Ty>,
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trait_path: ast::Path,
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ident: ast::Ident,
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lifetimes: Vec<ast::Lifetime>,
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types: Vec<P<ast::Ty>>,
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bindings: Vec<ast::TypeBinding>)
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-> (ast::QSelf, ast::Path) {
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let mut path = trait_path;
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let parameters = if !lifetimes.is_empty() || !types.is_empty() || !bindings.is_empty() {
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ast::AngleBracketedParameterData { lifetimes, types, bindings, span: ident.span }.into()
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} else {
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None
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};
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path.segments.push(ast::PathSegment { ident, parameters });
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(ast::QSelf {
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ty: self_type,
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path_span: path.span,
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position: path.segments.len() - 1
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}, path)
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}
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fn ty_mt(&self, ty: P<ast::Ty>, mutbl: ast::Mutability) -> ast::MutTy {
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ast::MutTy {
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ty,
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mutbl,
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}
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}
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fn ty(&self, span: Span, ty: ast::TyKind) -> P<ast::Ty> {
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P(ast::Ty {
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id: ast::DUMMY_NODE_ID,
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span,
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node: ty
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})
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}
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fn ty_path(&self, path: ast::Path) -> P<ast::Ty> {
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self.ty(path.span, ast::TyKind::Path(None, path))
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}
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// Might need to take bounds as an argument in the future, if you ever want
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// to generate a bounded existential trait type.
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fn ty_ident(&self, span: Span, ident: ast::Ident)
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-> P<ast::Ty> {
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self.ty_path(self.path_ident(span, ident))
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}
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fn ty_rptr(&self,
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|
span: Span,
|
|
ty: P<ast::Ty>,
|
|
lifetime: Option<ast::Lifetime>,
|
|
mutbl: ast::Mutability)
|
|
-> P<ast::Ty> {
|
|
self.ty(span,
|
|
ast::TyKind::Rptr(lifetime, self.ty_mt(ty, mutbl)))
|
|
}
|
|
|
|
fn ty_ptr(&self,
|
|
span: Span,
|
|
ty: P<ast::Ty>,
|
|
mutbl: ast::Mutability)
|
|
-> P<ast::Ty> {
|
|
self.ty(span,
|
|
ast::TyKind::Ptr(self.ty_mt(ty, mutbl)))
|
|
}
|
|
|
|
fn ty_option(&self, ty: P<ast::Ty>) -> P<ast::Ty> {
|
|
self.ty_path(
|
|
self.path_all(DUMMY_SP,
|
|
true,
|
|
self.std_path(&["option", "Option"]),
|
|
Vec::new(),
|
|
vec![ ty ],
|
|
Vec::new()))
|
|
}
|
|
|
|
fn ty_infer(&self, span: Span) -> P<ast::Ty> {
|
|
self.ty(span, ast::TyKind::Infer)
|
|
}
|
|
|
|
fn typaram(&self,
|
|
span: Span,
|
|
ident: ast::Ident,
|
|
attrs: Vec<ast::Attribute>,
|
|
bounds: ast::TyParamBounds,
|
|
default: Option<P<ast::Ty>>) -> ast::TyParam {
|
|
ast::TyParam {
|
|
ident: ident.with_span_pos(span),
|
|
id: ast::DUMMY_NODE_ID,
|
|
attrs: attrs.into(),
|
|
bounds,
|
|
default,
|
|
}
|
|
}
|
|
|
|
fn trait_ref(&self, path: ast::Path) -> ast::TraitRef {
|
|
ast::TraitRef {
|
|
path,
|
|
ref_id: ast::DUMMY_NODE_ID,
|
|
}
|
|
}
|
|
|
|
fn poly_trait_ref(&self, span: Span, path: ast::Path) -> ast::PolyTraitRef {
|
|
ast::PolyTraitRef {
|
|
bound_generic_params: Vec::new(),
|
|
trait_ref: self.trait_ref(path),
|
|
span,
|
|
}
|
|
}
|
|
|
|
fn typarambound(&self, path: ast::Path) -> ast::TyParamBound {
|
|
ast::TraitTyParamBound(self.poly_trait_ref(path.span, path), ast::TraitBoundModifier::None)
|
|
}
|
|
|
|
fn lifetime(&self, span: Span, ident: ast::Ident) -> ast::Lifetime {
|
|
ast::Lifetime { id: ast::DUMMY_NODE_ID, ident: ident.with_span_pos(span) }
|
|
}
|
|
|
|
fn lifetime_def(&self,
|
|
span: Span,
|
|
ident: ast::Ident,
|
|
attrs: Vec<ast::Attribute>,
|
|
bounds: Vec<ast::Lifetime>)
|
|
-> ast::LifetimeDef {
|
|
ast::LifetimeDef {
|
|
attrs: attrs.into(),
|
|
lifetime: self.lifetime(span, ident),
|
|
bounds,
|
|
}
|
|
}
|
|
|
|
fn stmt_expr(&self, expr: P<ast::Expr>) -> ast::Stmt {
|
|
ast::Stmt {
|
|
id: ast::DUMMY_NODE_ID,
|
|
span: expr.span,
|
|
node: ast::StmtKind::Expr(expr),
|
|
}
|
|
}
|
|
|
|
fn stmt_semi(&self, expr: P<ast::Expr>) -> ast::Stmt {
|
|
ast::Stmt {
|
|
id: ast::DUMMY_NODE_ID,
|
|
span: expr.span,
|
|
node: ast::StmtKind::Semi(expr),
|
|
}
|
|
}
|
|
|
|
fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident,
|
|
ex: P<ast::Expr>) -> ast::Stmt {
|
|
let pat = if mutbl {
|
|
let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Mutable);
|
|
self.pat_ident_binding_mode(sp, ident, binding_mode)
|
|
} else {
|
|
self.pat_ident(sp, ident)
|
|
};
|
|
let local = P(ast::Local {
|
|
pat,
|
|
ty: None,
|
|
init: Some(ex),
|
|
id: ast::DUMMY_NODE_ID,
|
|
span: sp,
|
|
attrs: ast::ThinVec::new(),
|
|
});
|
|
ast::Stmt {
|
|
id: ast::DUMMY_NODE_ID,
|
|
node: ast::StmtKind::Local(local),
|
|
span: sp,
|
|
}
|
|
}
|
|
|
|
fn stmt_let_typed(&self,
|
|
sp: Span,
|
|
mutbl: bool,
|
|
ident: ast::Ident,
|
|
typ: P<ast::Ty>,
|
|
ex: P<ast::Expr>)
|
|
-> ast::Stmt {
|
|
let pat = if mutbl {
|
|
let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Mutable);
|
|
self.pat_ident_binding_mode(sp, ident, binding_mode)
|
|
} else {
|
|
self.pat_ident(sp, ident)
|
|
};
|
|
let local = P(ast::Local {
|
|
pat,
|
|
ty: Some(typ),
|
|
init: Some(ex),
|
|
id: ast::DUMMY_NODE_ID,
|
|
span: sp,
|
|
attrs: ast::ThinVec::new(),
|
|
});
|
|
ast::Stmt {
|
|
id: ast::DUMMY_NODE_ID,
|
|
node: ast::StmtKind::Local(local),
|
|
span: sp,
|
|
}
|
|
}
|
|
|
|
// Generate `let _: Type;`, usually used for type assertions.
|
|
fn stmt_let_type_only(&self, span: Span, ty: P<ast::Ty>) -> ast::Stmt {
|
|
let local = P(ast::Local {
|
|
pat: self.pat_wild(span),
|
|
ty: Some(ty),
|
|
init: None,
|
|
id: ast::DUMMY_NODE_ID,
|
|
span,
|
|
attrs: ast::ThinVec::new(),
|
|
});
|
|
ast::Stmt {
|
|
id: ast::DUMMY_NODE_ID,
|
|
node: ast::StmtKind::Local(local),
|
|
span,
|
|
}
|
|
}
|
|
|
|
fn stmt_item(&self, sp: Span, item: P<ast::Item>) -> ast::Stmt {
|
|
ast::Stmt {
|
|
id: ast::DUMMY_NODE_ID,
|
|
node: ast::StmtKind::Item(item),
|
|
span: sp,
|
|
}
|
|
}
|
|
|
|
fn block_expr(&self, expr: P<ast::Expr>) -> P<ast::Block> {
|
|
self.block(expr.span, vec![ast::Stmt {
|
|
id: ast::DUMMY_NODE_ID,
|
|
span: expr.span,
|
|
node: ast::StmtKind::Expr(expr),
|
|
}])
|
|
}
|
|
fn block(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Block> {
|
|
P(ast::Block {
|
|
stmts,
|
|
id: ast::DUMMY_NODE_ID,
|
|
rules: BlockCheckMode::Default,
|
|
span,
|
|
recovered: false,
|
|
})
|
|
}
|
|
|
|
fn expr(&self, span: Span, node: ast::ExprKind) -> P<ast::Expr> {
|
|
P(ast::Expr {
|
|
id: ast::DUMMY_NODE_ID,
|
|
node,
|
|
span,
|
|
attrs: ast::ThinVec::new(),
|
|
})
|
|
}
|
|
|
|
fn expr_path(&self, path: ast::Path) -> P<ast::Expr> {
|
|
self.expr(path.span, ast::ExprKind::Path(None, path))
|
|
}
|
|
|
|
/// Constructs a QPath expression.
|
|
fn expr_qpath(&self, span: Span, qself: ast::QSelf, path: ast::Path) -> P<ast::Expr> {
|
|
self.expr(span, ast::ExprKind::Path(Some(qself), path))
|
|
}
|
|
|
|
fn expr_ident(&self, span: Span, id: ast::Ident) -> P<ast::Expr> {
|
|
self.expr_path(self.path_ident(span, id))
|
|
}
|
|
fn expr_self(&self, span: Span) -> P<ast::Expr> {
|
|
self.expr_ident(span, keywords::SelfValue.ident())
|
|
}
|
|
|
|
fn expr_binary(&self, sp: Span, op: ast::BinOpKind,
|
|
lhs: P<ast::Expr>, rhs: P<ast::Expr>) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Binary(Spanned { node: op, span: sp }, lhs, rhs))
|
|
}
|
|
|
|
fn expr_deref(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
|
|
self.expr_unary(sp, UnOp::Deref, e)
|
|
}
|
|
fn expr_unary(&self, sp: Span, op: ast::UnOp, e: P<ast::Expr>) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Unary(op, e))
|
|
}
|
|
|
|
fn expr_field_access(&self, sp: Span, expr: P<ast::Expr>, ident: ast::Ident) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Field(expr, ident.with_span_pos(sp)))
|
|
}
|
|
fn expr_tup_field_access(&self, sp: Span, expr: P<ast::Expr>, idx: usize) -> P<ast::Expr> {
|
|
let ident = Ident::from_str(&idx.to_string()).with_span_pos(sp);
|
|
self.expr(sp, ast::ExprKind::Field(expr, ident))
|
|
}
|
|
fn expr_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::AddrOf(ast::Mutability::Immutable, e))
|
|
}
|
|
fn expr_mut_addr_of(&self, sp: Span, e: P<ast::Expr>) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::AddrOf(ast::Mutability::Mutable, e))
|
|
}
|
|
|
|
fn expr_call(&self, span: Span, expr: P<ast::Expr>, args: Vec<P<ast::Expr>>) -> P<ast::Expr> {
|
|
self.expr(span, ast::ExprKind::Call(expr, args))
|
|
}
|
|
fn expr_call_ident(&self, span: Span, id: ast::Ident,
|
|
args: Vec<P<ast::Expr>>) -> P<ast::Expr> {
|
|
self.expr(span, ast::ExprKind::Call(self.expr_ident(span, id), args))
|
|
}
|
|
fn expr_call_global(&self, sp: Span, fn_path: Vec<ast::Ident> ,
|
|
args: Vec<P<ast::Expr>> ) -> P<ast::Expr> {
|
|
let pathexpr = self.expr_path(self.path_global(sp, fn_path));
|
|
self.expr_call(sp, pathexpr, args)
|
|
}
|
|
fn expr_method_call(&self, span: Span,
|
|
expr: P<ast::Expr>,
|
|
ident: ast::Ident,
|
|
mut args: Vec<P<ast::Expr>> ) -> P<ast::Expr> {
|
|
args.insert(0, expr);
|
|
let segment = ast::PathSegment::from_ident(ident.with_span_pos(span));
|
|
self.expr(span, ast::ExprKind::MethodCall(segment, args))
|
|
}
|
|
fn expr_block(&self, b: P<ast::Block>) -> P<ast::Expr> {
|
|
self.expr(b.span, ast::ExprKind::Block(b, None))
|
|
}
|
|
fn field_imm(&self, span: Span, ident: Ident, e: P<ast::Expr>) -> ast::Field {
|
|
ast::Field {
|
|
ident: ident.with_span_pos(span),
|
|
expr: e,
|
|
span,
|
|
is_shorthand: false,
|
|
attrs: ast::ThinVec::new(),
|
|
}
|
|
}
|
|
fn expr_struct(&self, span: Span, path: ast::Path, fields: Vec<ast::Field>) -> P<ast::Expr> {
|
|
self.expr(span, ast::ExprKind::Struct(path, fields, None))
|
|
}
|
|
fn expr_struct_ident(&self, span: Span,
|
|
id: ast::Ident, fields: Vec<ast::Field>) -> P<ast::Expr> {
|
|
self.expr_struct(span, self.path_ident(span, id), fields)
|
|
}
|
|
|
|
fn expr_lit(&self, sp: Span, lit: ast::LitKind) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Lit(P(respan(sp, lit))))
|
|
}
|
|
fn expr_usize(&self, span: Span, i: usize) -> P<ast::Expr> {
|
|
self.expr_lit(span, ast::LitKind::Int(i as u128,
|
|
ast::LitIntType::Unsigned(ast::UintTy::Usize)))
|
|
}
|
|
fn expr_isize(&self, sp: Span, i: isize) -> P<ast::Expr> {
|
|
if i < 0 {
|
|
let i = (-i) as u128;
|
|
let lit_ty = ast::LitIntType::Signed(ast::IntTy::Isize);
|
|
let lit = self.expr_lit(sp, ast::LitKind::Int(i, lit_ty));
|
|
self.expr_unary(sp, ast::UnOp::Neg, lit)
|
|
} else {
|
|
self.expr_lit(sp, ast::LitKind::Int(i as u128,
|
|
ast::LitIntType::Signed(ast::IntTy::Isize)))
|
|
}
|
|
}
|
|
fn expr_u32(&self, sp: Span, u: u32) -> P<ast::Expr> {
|
|
self.expr_lit(sp, ast::LitKind::Int(u as u128,
|
|
ast::LitIntType::Unsigned(ast::UintTy::U32)))
|
|
}
|
|
fn expr_u16(&self, sp: Span, u: u16) -> P<ast::Expr> {
|
|
self.expr_lit(sp, ast::LitKind::Int(u as u128,
|
|
ast::LitIntType::Unsigned(ast::UintTy::U16)))
|
|
}
|
|
fn expr_u8(&self, sp: Span, u: u8) -> P<ast::Expr> {
|
|
self.expr_lit(sp, ast::LitKind::Int(u as u128, ast::LitIntType::Unsigned(ast::UintTy::U8)))
|
|
}
|
|
fn expr_bool(&self, sp: Span, value: bool) -> P<ast::Expr> {
|
|
self.expr_lit(sp, ast::LitKind::Bool(value))
|
|
}
|
|
|
|
fn expr_vec(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Array(exprs))
|
|
}
|
|
fn expr_vec_ng(&self, sp: Span) -> P<ast::Expr> {
|
|
self.expr_call_global(sp, self.std_path(&["vec", "Vec", "new"]),
|
|
Vec::new())
|
|
}
|
|
fn expr_vec_slice(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
|
|
self.expr_addr_of(sp, self.expr_vec(sp, exprs))
|
|
}
|
|
fn expr_str(&self, sp: Span, s: Symbol) -> P<ast::Expr> {
|
|
self.expr_lit(sp, ast::LitKind::Str(s, ast::StrStyle::Cooked))
|
|
}
|
|
|
|
fn expr_cast(&self, sp: Span, expr: P<ast::Expr>, ty: P<ast::Ty>) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Cast(expr, ty))
|
|
}
|
|
|
|
|
|
fn expr_some(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
|
|
let some = self.std_path(&["option", "Option", "Some"]);
|
|
self.expr_call_global(sp, some, vec![expr])
|
|
}
|
|
|
|
fn expr_none(&self, sp: Span) -> P<ast::Expr> {
|
|
let none = self.std_path(&["option", "Option", "None"]);
|
|
let none = self.path_global(sp, none);
|
|
self.expr_path(none)
|
|
}
|
|
|
|
|
|
fn expr_break(&self, sp: Span) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Break(None, None))
|
|
}
|
|
|
|
|
|
fn expr_tuple(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
|
|
self.expr(sp, ast::ExprKind::Tup(exprs))
|
|
}
|
|
|
|
fn expr_fail(&self, span: Span, msg: Symbol) -> P<ast::Expr> {
|
|
let loc = self.codemap().lookup_char_pos(span.lo());
|
|
let expr_file = self.expr_str(span, Symbol::intern(&loc.file.name.to_string()));
|
|
let expr_line = self.expr_u32(span, loc.line as u32);
|
|
let expr_col = self.expr_u32(span, loc.col.to_usize() as u32 + 1);
|
|
let expr_loc_tuple = self.expr_tuple(span, vec![expr_file, expr_line, expr_col]);
|
|
let expr_loc_ptr = self.expr_addr_of(span, expr_loc_tuple);
|
|
self.expr_call_global(
|
|
span,
|
|
self.std_path(&["rt", "begin_panic"]),
|
|
vec![
|
|
self.expr_str(span, msg),
|
|
expr_loc_ptr])
|
|
}
|
|
|
|
fn expr_unreachable(&self, span: Span) -> P<ast::Expr> {
|
|
self.expr_fail(span, Symbol::intern("internal error: entered unreachable code"))
|
|
}
|
|
|
|
fn expr_ok(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
|
|
let ok = self.std_path(&["result", "Result", "Ok"]);
|
|
self.expr_call_global(sp, ok, vec![expr])
|
|
}
|
|
|
|
fn expr_err(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr> {
|
|
let err = self.std_path(&["result", "Result", "Err"]);
|
|
self.expr_call_global(sp, err, vec![expr])
|
|
}
|
|
|
|
fn expr_try(&self, sp: Span, head: P<ast::Expr>) -> P<ast::Expr> {
|
|
let ok = self.std_path(&["result", "Result", "Ok"]);
|
|
let ok_path = self.path_global(sp, ok);
|
|
let err = self.std_path(&["result", "Result", "Err"]);
|
|
let err_path = self.path_global(sp, err);
|
|
|
|
let binding_variable = self.ident_of("__try_var");
|
|
let binding_pat = self.pat_ident(sp, binding_variable);
|
|
let binding_expr = self.expr_ident(sp, binding_variable);
|
|
|
|
// Ok(__try_var) pattern
|
|
let ok_pat = self.pat_tuple_struct(sp, ok_path, vec![binding_pat.clone()]);
|
|
|
|
// Err(__try_var) (pattern and expression resp.)
|
|
let err_pat = self.pat_tuple_struct(sp, err_path.clone(), vec![binding_pat]);
|
|
let err_inner_expr = self.expr_call(sp, self.expr_path(err_path),
|
|
vec![binding_expr.clone()]);
|
|
// return Err(__try_var)
|
|
let err_expr = self.expr(sp, ast::ExprKind::Ret(Some(err_inner_expr)));
|
|
|
|
// Ok(__try_var) => __try_var
|
|
let ok_arm = self.arm(sp, vec![ok_pat], binding_expr);
|
|
// Err(__try_var) => return Err(__try_var)
|
|
let err_arm = self.arm(sp, vec![err_pat], err_expr);
|
|
|
|
// match head { Ok() => ..., Err() => ... }
|
|
self.expr_match(sp, head, vec![ok_arm, err_arm])
|
|
}
|
|
|
|
|
|
fn pat(&self, span: Span, pat: PatKind) -> P<ast::Pat> {
|
|
P(ast::Pat { id: ast::DUMMY_NODE_ID, node: pat, span: span })
|
|
}
|
|
fn pat_wild(&self, span: Span) -> P<ast::Pat> {
|
|
self.pat(span, PatKind::Wild)
|
|
}
|
|
fn pat_lit(&self, span: Span, expr: P<ast::Expr>) -> P<ast::Pat> {
|
|
self.pat(span, PatKind::Lit(expr))
|
|
}
|
|
fn pat_ident(&self, span: Span, ident: ast::Ident) -> P<ast::Pat> {
|
|
let binding_mode = ast::BindingMode::ByValue(ast::Mutability::Immutable);
|
|
self.pat_ident_binding_mode(span, ident, binding_mode)
|
|
}
|
|
|
|
fn pat_ident_binding_mode(&self,
|
|
span: Span,
|
|
ident: ast::Ident,
|
|
bm: ast::BindingMode) -> P<ast::Pat> {
|
|
let pat = PatKind::Ident(bm, ident.with_span_pos(span), None);
|
|
self.pat(span, pat)
|
|
}
|
|
fn pat_path(&self, span: Span, path: ast::Path) -> P<ast::Pat> {
|
|
self.pat(span, PatKind::Path(None, path))
|
|
}
|
|
fn pat_tuple_struct(&self, span: Span, path: ast::Path,
|
|
subpats: Vec<P<ast::Pat>>) -> P<ast::Pat> {
|
|
self.pat(span, PatKind::TupleStruct(path, subpats, None))
|
|
}
|
|
fn pat_struct(&self, span: Span, path: ast::Path,
|
|
field_pats: Vec<Spanned<ast::FieldPat>>) -> P<ast::Pat> {
|
|
self.pat(span, PatKind::Struct(path, field_pats, false))
|
|
}
|
|
fn pat_tuple(&self, span: Span, pats: Vec<P<ast::Pat>>) -> P<ast::Pat> {
|
|
self.pat(span, PatKind::Tuple(pats, None))
|
|
}
|
|
|
|
fn pat_some(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
|
|
let some = self.std_path(&["option", "Option", "Some"]);
|
|
let path = self.path_global(span, some);
|
|
self.pat_tuple_struct(span, path, vec![pat])
|
|
}
|
|
|
|
fn pat_none(&self, span: Span) -> P<ast::Pat> {
|
|
let some = self.std_path(&["option", "Option", "None"]);
|
|
let path = self.path_global(span, some);
|
|
self.pat_path(span, path)
|
|
}
|
|
|
|
fn pat_ok(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
|
|
let some = self.std_path(&["result", "Result", "Ok"]);
|
|
let path = self.path_global(span, some);
|
|
self.pat_tuple_struct(span, path, vec![pat])
|
|
}
|
|
|
|
fn pat_err(&self, span: Span, pat: P<ast::Pat>) -> P<ast::Pat> {
|
|
let some = self.std_path(&["result", "Result", "Err"]);
|
|
let path = self.path_global(span, some);
|
|
self.pat_tuple_struct(span, path, vec![pat])
|
|
}
|
|
|
|
fn arm(&self, _span: Span, pats: Vec<P<ast::Pat>>, expr: P<ast::Expr>) -> ast::Arm {
|
|
ast::Arm {
|
|
attrs: vec![],
|
|
pats,
|
|
guard: None,
|
|
body: expr,
|
|
}
|
|
}
|
|
|
|
fn arm_unreachable(&self, span: Span) -> ast::Arm {
|
|
self.arm(span, vec![self.pat_wild(span)], self.expr_unreachable(span))
|
|
}
|
|
|
|
fn expr_match(&self, span: Span, arg: P<ast::Expr>, arms: Vec<ast::Arm>) -> P<Expr> {
|
|
self.expr(span, ast::ExprKind::Match(arg, arms))
|
|
}
|
|
|
|
fn expr_if(&self, span: Span, cond: P<ast::Expr>,
|
|
then: P<ast::Expr>, els: Option<P<ast::Expr>>) -> P<ast::Expr> {
|
|
let els = els.map(|x| self.expr_block(self.block_expr(x)));
|
|
self.expr(span, ast::ExprKind::If(cond, self.block_expr(then), els))
|
|
}
|
|
|
|
fn expr_loop(&self, span: Span, block: P<ast::Block>) -> P<ast::Expr> {
|
|
self.expr(span, ast::ExprKind::Loop(block, None))
|
|
}
|
|
|
|
fn lambda_fn_decl(&self,
|
|
span: Span,
|
|
fn_decl: P<ast::FnDecl>,
|
|
body: P<ast::Expr>,
|
|
fn_decl_span: Span) // span of the `|...|` part
|
|
-> P<ast::Expr> {
|
|
self.expr(span, ast::ExprKind::Closure(ast::CaptureBy::Ref,
|
|
ast::Movability::Movable,
|
|
fn_decl,
|
|
body,
|
|
fn_decl_span))
|
|
}
|
|
|
|
fn lambda(&self,
|
|
span: Span,
|
|
ids: Vec<ast::Ident>,
|
|
body: P<ast::Expr>)
|
|
-> P<ast::Expr> {
|
|
let fn_decl = self.fn_decl(
|
|
ids.iter().map(|id| self.arg(span, *id, self.ty_infer(span))).collect(),
|
|
ast::FunctionRetTy::Default(span));
|
|
|
|
// FIXME -- We are using `span` as the span of the `|...|`
|
|
// part of the lambda, but it probably (maybe?) corresponds to
|
|
// the entire lambda body. Probably we should extend the API
|
|
// here, but that's not entirely clear.
|
|
self.expr(span, ast::ExprKind::Closure(ast::CaptureBy::Ref,
|
|
ast::Movability::Movable,
|
|
fn_decl,
|
|
body,
|
|
span))
|
|
}
|
|
|
|
fn lambda0(&self, span: Span, body: P<ast::Expr>) -> P<ast::Expr> {
|
|
self.lambda(span, Vec::new(), body)
|
|
}
|
|
|
|
fn lambda1(&self, span: Span, body: P<ast::Expr>, ident: ast::Ident) -> P<ast::Expr> {
|
|
self.lambda(span, vec![ident], body)
|
|
}
|
|
|
|
fn lambda_stmts(&self,
|
|
span: Span,
|
|
ids: Vec<ast::Ident>,
|
|
stmts: Vec<ast::Stmt>)
|
|
-> P<ast::Expr> {
|
|
self.lambda(span, ids, self.expr_block(self.block(span, stmts)))
|
|
}
|
|
fn lambda_stmts_0(&self, span: Span, stmts: Vec<ast::Stmt>) -> P<ast::Expr> {
|
|
self.lambda0(span, self.expr_block(self.block(span, stmts)))
|
|
}
|
|
fn lambda_stmts_1(&self, span: Span, stmts: Vec<ast::Stmt>,
|
|
ident: ast::Ident) -> P<ast::Expr> {
|
|
self.lambda1(span, self.expr_block(self.block(span, stmts)), ident)
|
|
}
|
|
|
|
fn arg(&self, span: Span, ident: ast::Ident, ty: P<ast::Ty>) -> ast::Arg {
|
|
let arg_pat = self.pat_ident(span, ident);
|
|
ast::Arg {
|
|
ty,
|
|
pat: arg_pat,
|
|
id: ast::DUMMY_NODE_ID
|
|
}
|
|
}
|
|
|
|
// FIXME unused self
|
|
fn fn_decl(&self, inputs: Vec<ast::Arg>, output: ast::FunctionRetTy) -> P<ast::FnDecl> {
|
|
P(ast::FnDecl {
|
|
inputs,
|
|
output,
|
|
variadic: false
|
|
})
|
|
}
|
|
|
|
fn item(&self, span: Span, name: Ident,
|
|
attrs: Vec<ast::Attribute>, node: ast::ItemKind) -> P<ast::Item> {
|
|
// FIXME: Would be nice if our generated code didn't violate
|
|
// Rust coding conventions
|
|
P(ast::Item {
|
|
ident: name,
|
|
attrs,
|
|
id: ast::DUMMY_NODE_ID,
|
|
node,
|
|
vis: respan(span.shrink_to_lo(), ast::VisibilityKind::Inherited),
|
|
span,
|
|
tokens: None,
|
|
})
|
|
}
|
|
|
|
fn item_fn_poly(&self,
|
|
span: Span,
|
|
name: Ident,
|
|
inputs: Vec<ast::Arg> ,
|
|
output: P<ast::Ty>,
|
|
generics: Generics,
|
|
body: P<ast::Block>) -> P<ast::Item> {
|
|
self.item(span,
|
|
name,
|
|
Vec::new(),
|
|
ast::ItemKind::Fn(self.fn_decl(inputs, ast::FunctionRetTy::Ty(output)),
|
|
ast::Unsafety::Normal,
|
|
dummy_spanned(ast::Constness::NotConst),
|
|
Abi::Rust,
|
|
generics,
|
|
body))
|
|
}
|
|
|
|
fn item_fn(&self,
|
|
span: Span,
|
|
name: Ident,
|
|
inputs: Vec<ast::Arg> ,
|
|
output: P<ast::Ty>,
|
|
body: P<ast::Block>
|
|
) -> P<ast::Item> {
|
|
self.item_fn_poly(
|
|
span,
|
|
name,
|
|
inputs,
|
|
output,
|
|
Generics::default(),
|
|
body)
|
|
}
|
|
|
|
fn variant(&self, span: Span, ident: Ident, tys: Vec<P<ast::Ty>> ) -> ast::Variant {
|
|
let fields: Vec<_> = tys.into_iter().map(|ty| {
|
|
ast::StructField {
|
|
span: ty.span,
|
|
ty,
|
|
ident: None,
|
|
vis: respan(span.shrink_to_lo(), ast::VisibilityKind::Inherited),
|
|
attrs: Vec::new(),
|
|
id: ast::DUMMY_NODE_ID,
|
|
}
|
|
}).collect();
|
|
|
|
let vdata = if fields.is_empty() {
|
|
ast::VariantData::Unit(ast::DUMMY_NODE_ID)
|
|
} else {
|
|
ast::VariantData::Tuple(fields, ast::DUMMY_NODE_ID)
|
|
};
|
|
|
|
respan(span,
|
|
ast::Variant_ {
|
|
ident,
|
|
attrs: Vec::new(),
|
|
data: vdata,
|
|
disr_expr: None,
|
|
})
|
|
}
|
|
|
|
fn item_enum_poly(&self, span: Span, name: Ident,
|
|
enum_definition: ast::EnumDef,
|
|
generics: Generics) -> P<ast::Item> {
|
|
self.item(span, name, Vec::new(), ast::ItemKind::Enum(enum_definition, generics))
|
|
}
|
|
|
|
fn item_enum(&self, span: Span, name: Ident,
|
|
enum_definition: ast::EnumDef) -> P<ast::Item> {
|
|
self.item_enum_poly(span, name, enum_definition,
|
|
Generics::default())
|
|
}
|
|
|
|
fn item_struct(&self, span: Span, name: Ident,
|
|
struct_def: ast::VariantData) -> P<ast::Item> {
|
|
self.item_struct_poly(
|
|
span,
|
|
name,
|
|
struct_def,
|
|
Generics::default()
|
|
)
|
|
}
|
|
|
|
fn item_struct_poly(&self, span: Span, name: Ident,
|
|
struct_def: ast::VariantData, generics: Generics) -> P<ast::Item> {
|
|
self.item(span, name, Vec::new(), ast::ItemKind::Struct(struct_def, generics))
|
|
}
|
|
|
|
fn item_mod(&self, span: Span, inner_span: Span, name: Ident,
|
|
attrs: Vec<ast::Attribute>,
|
|
items: Vec<P<ast::Item>>) -> P<ast::Item> {
|
|
self.item(
|
|
span,
|
|
name,
|
|
attrs,
|
|
ast::ItemKind::Mod(ast::Mod {
|
|
inner: inner_span,
|
|
items,
|
|
})
|
|
)
|
|
}
|
|
|
|
fn item_extern_crate(&self, span: Span, name: Ident) -> P<ast::Item> {
|
|
self.item(span, name, Vec::new(), ast::ItemKind::ExternCrate(None))
|
|
}
|
|
|
|
fn item_static(&self,
|
|
span: Span,
|
|
name: Ident,
|
|
ty: P<ast::Ty>,
|
|
mutbl: ast::Mutability,
|
|
expr: P<ast::Expr>)
|
|
-> P<ast::Item> {
|
|
self.item(span, name, Vec::new(), ast::ItemKind::Static(ty, mutbl, expr))
|
|
}
|
|
|
|
fn item_const(&self,
|
|
span: Span,
|
|
name: Ident,
|
|
ty: P<ast::Ty>,
|
|
expr: P<ast::Expr>)
|
|
-> P<ast::Item> {
|
|
self.item(span, name, Vec::new(), ast::ItemKind::Const(ty, expr))
|
|
}
|
|
|
|
fn item_ty_poly(&self, span: Span, name: Ident, ty: P<ast::Ty>,
|
|
generics: Generics) -> P<ast::Item> {
|
|
self.item(span, name, Vec::new(), ast::ItemKind::Ty(ty, generics))
|
|
}
|
|
|
|
fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> P<ast::Item> {
|
|
self.item_ty_poly(span, name, ty, Generics::default())
|
|
}
|
|
|
|
fn attribute(&self, sp: Span, mi: ast::MetaItem) -> ast::Attribute {
|
|
attr::mk_spanned_attr_outer(sp, attr::mk_attr_id(), mi)
|
|
}
|
|
|
|
fn meta_word(&self, sp: Span, w: ast::Name) -> ast::MetaItem {
|
|
attr::mk_word_item(Ident::with_empty_ctxt(w).with_span_pos(sp))
|
|
}
|
|
|
|
fn meta_list_item_word(&self, sp: Span, w: ast::Name) -> ast::NestedMetaItem {
|
|
attr::mk_nested_word_item(Ident::with_empty_ctxt(w).with_span_pos(sp))
|
|
}
|
|
|
|
fn meta_list(&self, sp: Span, name: ast::Name, mis: Vec<ast::NestedMetaItem>)
|
|
-> ast::MetaItem {
|
|
attr::mk_list_item(sp, Ident::with_empty_ctxt(name).with_span_pos(sp), mis)
|
|
}
|
|
|
|
fn meta_name_value(&self, sp: Span, name: ast::Name, value: ast::LitKind)
|
|
-> ast::MetaItem {
|
|
attr::mk_name_value_item(sp, Ident::with_empty_ctxt(name).with_span_pos(sp),
|
|
respan(sp, value))
|
|
}
|
|
|
|
fn item_use(&self, sp: Span,
|
|
vis: ast::Visibility, vp: P<ast::UseTree>) -> P<ast::Item> {
|
|
P(ast::Item {
|
|
id: ast::DUMMY_NODE_ID,
|
|
ident: keywords::Invalid.ident(),
|
|
attrs: vec![],
|
|
node: ast::ItemKind::Use(vp),
|
|
vis,
|
|
span: sp,
|
|
tokens: None,
|
|
})
|
|
}
|
|
|
|
fn item_use_simple(&self, sp: Span, vis: ast::Visibility, path: ast::Path) -> P<ast::Item> {
|
|
self.item_use_simple_(sp, vis, None, path)
|
|
}
|
|
|
|
fn item_use_simple_(&self, sp: Span, vis: ast::Visibility,
|
|
rename: Option<ast::Ident>, path: ast::Path) -> P<ast::Item> {
|
|
self.item_use(sp, vis, P(ast::UseTree {
|
|
span: sp,
|
|
prefix: path,
|
|
kind: ast::UseTreeKind::Simple(rename),
|
|
}))
|
|
}
|
|
|
|
fn item_use_list(&self, sp: Span, vis: ast::Visibility,
|
|
path: Vec<ast::Ident>, imports: &[ast::Ident]) -> P<ast::Item> {
|
|
let imports = imports.iter().map(|id| {
|
|
(ast::UseTree {
|
|
span: sp,
|
|
prefix: self.path(sp, vec![*id]),
|
|
kind: ast::UseTreeKind::Simple(None),
|
|
}, ast::DUMMY_NODE_ID)
|
|
}).collect();
|
|
|
|
self.item_use(sp, vis, P(ast::UseTree {
|
|
span: sp,
|
|
prefix: self.path(sp, path),
|
|
kind: ast::UseTreeKind::Nested(imports),
|
|
}))
|
|
}
|
|
|
|
fn item_use_glob(&self, sp: Span,
|
|
vis: ast::Visibility, path: Vec<ast::Ident>) -> P<ast::Item> {
|
|
self.item_use(sp, vis, P(ast::UseTree {
|
|
span: sp,
|
|
prefix: self.path(sp, path),
|
|
kind: ast::UseTreeKind::Glob,
|
|
}))
|
|
}
|
|
}
|