668 lines
23 KiB
Rust
668 lines
23 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 ast::*;
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use codemap::span;
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// Context-passing AST walker. Each overridden visit method has full control
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// over what happens with its node, it can do its own traversal of the node's
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// children (potentially passing in different contexts to each), call
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// visit::visit_* to apply the default traversal algorithm (again, it can
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// override the context), or prevent deeper traversal by doing nothing.
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// Our typesystem doesn't do circular types, so the visitor record can not
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// hold functions that take visitors. A vt enum is used to break the cycle.
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enum vt<E> { mk_vt(visitor<E>), }
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enum fn_kind {
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fk_item_fn(ident, ~[ty_param], purity), //< an item declared with fn()
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fk_method(ident, ~[ty_param], @method),
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fk_anon(Proto, capture_clause), //< an anonymous function like fn@(...)
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fk_fn_block(capture_clause), //< a block {||...}
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fk_dtor(~[ty_param], ~[attribute], node_id /* self id */,
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def_id /* parent class id */) // class destructor
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}
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fn name_of_fn(fk: fn_kind) -> ident {
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match fk {
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fk_item_fn(name, _, _) | fk_method(name, _, _) => {
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/* FIXME (#2543) */ copy name
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}
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fk_anon(*) | fk_fn_block(*) => parse::token::special_idents::anon,
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fk_dtor(*) => parse::token::special_idents::dtor
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}
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}
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fn tps_of_fn(fk: fn_kind) -> ~[ty_param] {
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match fk {
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fk_item_fn(_, tps, _) | fk_method(_, tps, _) |
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fk_dtor(tps, _, _, _) => {
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/* FIXME (#2543) */ copy tps
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}
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fk_anon(*) | fk_fn_block(*) => ~[]
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}
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}
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type visitor<E> =
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@{visit_mod: fn@(_mod, span, node_id, E, vt<E>),
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visit_view_item: fn@(@view_item, E, vt<E>),
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visit_foreign_item: fn@(@foreign_item, E, vt<E>),
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visit_item: fn@(@item, E, vt<E>),
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visit_local: fn@(@local, E, vt<E>),
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visit_block: fn@(ast::blk, E, vt<E>),
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visit_stmt: fn@(@stmt, E, vt<E>),
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visit_arm: fn@(arm, E, vt<E>),
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visit_pat: fn@(@pat, E, vt<E>),
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visit_decl: fn@(@decl, E, vt<E>),
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visit_expr: fn@(@expr, E, vt<E>),
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visit_expr_post: fn@(@expr, E, vt<E>),
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visit_ty: fn@(@Ty, E, vt<E>),
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visit_ty_params: fn@(~[ty_param], E, vt<E>),
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visit_fn: fn@(fn_kind, fn_decl, blk, span, node_id, E, vt<E>),
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visit_ty_method: fn@(ty_method, E, vt<E>),
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visit_trait_method: fn@(trait_method, E, vt<E>),
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visit_struct_def: fn@(@struct_def, ident, ~[ty_param], node_id, E,
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vt<E>),
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visit_struct_field: fn@(@struct_field, E, vt<E>),
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visit_struct_method: fn@(@method, E, vt<E>)};
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fn default_visitor<E>() -> visitor<E> {
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return @{visit_mod: |a,b,c,d,e|visit_mod::<E>(a, b, c, d, e),
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visit_view_item: |a,b,c|visit_view_item::<E>(a, b, c),
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visit_foreign_item: |a,b,c|visit_foreign_item::<E>(a, b, c),
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visit_item: |a,b,c|visit_item::<E>(a, b, c),
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visit_local: |a,b,c|visit_local::<E>(a, b, c),
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visit_block: |a,b,c|visit_block::<E>(a, b, c),
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visit_stmt: |a,b,c|visit_stmt::<E>(a, b, c),
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visit_arm: |a,b,c|visit_arm::<E>(a, b, c),
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visit_pat: |a,b,c|visit_pat::<E>(a, b, c),
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visit_decl: |a,b,c|visit_decl::<E>(a, b, c),
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visit_expr: |a,b,c|visit_expr::<E>(a, b, c),
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visit_expr_post: |_a,_b,_c| (),
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visit_ty: |a,b,c|skip_ty::<E>(a, b, c),
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visit_ty_params: |a,b,c|visit_ty_params::<E>(a, b, c),
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visit_fn: |a,b,c,d,e,f,g|visit_fn::<E>(a, b, c, d, e, f, g),
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visit_ty_method: |a,b,c|visit_ty_method::<E>(a, b, c),
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visit_trait_method: |a,b,c|visit_trait_method::<E>(a, b, c),
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visit_struct_def: |a,b,c,d,e,f|visit_struct_def::<E>(a, b, c,
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d, e, f),
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visit_struct_field: |a,b,c|visit_struct_field::<E>(a, b, c),
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visit_struct_method: |a,b,c|visit_struct_method::<E>(a, b, c)};
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}
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fn visit_crate<E>(c: crate, e: E, v: vt<E>) {
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(v.visit_mod)(c.node.module, c.span, crate_node_id, e, v);
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}
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fn visit_mod<E>(m: _mod, _sp: span, _id: node_id, e: E, v: vt<E>) {
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for m.view_items.each |vi| { (v.visit_view_item)(*vi, e, v); }
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for m.items.each |i| { (v.visit_item)(*i, e, v); }
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}
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fn visit_view_item<E>(_vi: @view_item, _e: E, _v: vt<E>) { }
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fn visit_local<E>(loc: @local, e: E, v: vt<E>) {
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(v.visit_pat)(loc.node.pat, e, v);
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(v.visit_ty)(loc.node.ty, e, v);
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match loc.node.init {
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None => (),
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Some(ex) => (v.visit_expr)(ex, e, v)
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}
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}
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fn visit_item<E>(i: @item, e: E, v: vt<E>) {
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match i.node {
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item_const(t, ex) => {
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(v.visit_ty)(t, e, v);
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(v.visit_expr)(ex, e, v);
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}
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item_fn(decl, purity, tp, ref body) => {
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(v.visit_fn)(fk_item_fn(/* FIXME (#2543) */ copy i.ident,
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/* FIXME (#2543) */ copy tp,
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purity), decl, (*body),
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i.span, i.id, e, v);
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}
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item_mod(m) => (v.visit_mod)(m, i.span, i.id, e, v),
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item_foreign_mod(nm) => {
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for nm.view_items.each |vi| { (v.visit_view_item)(*vi, e, v); }
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for nm.items.each |ni| { (v.visit_foreign_item)(*ni, e, v); }
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}
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item_ty(t, tps) => {
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(v.visit_ty)(t, e, v);
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(v.visit_ty_params)(tps, e, v);
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}
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item_enum(ref enum_definition, tps) => {
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(v.visit_ty_params)(tps, e, v);
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visit_enum_def((*enum_definition), tps, e, v);
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}
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item_impl(tps, traits, ty, methods) => {
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(v.visit_ty_params)(tps, e, v);
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for traits.each |p| {
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visit_path(p.path, e, v);
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}
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(v.visit_ty)(ty, e, v);
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for methods.each |m| {
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visit_method_helper(*m, e, v)
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}
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}
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item_struct(struct_def, tps) => {
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(v.visit_ty_params)(tps, e, v);
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(v.visit_struct_def)(struct_def, i.ident, tps, i.id, e, v);
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}
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item_trait(tps, traits, ref methods) => {
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(v.visit_ty_params)(tps, e, v);
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for traits.each |p| { visit_path(p.path, e, v); }
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for (*methods).each |m| {
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(v.visit_trait_method)(*m, e, v);
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}
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}
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item_mac(ref m) => visit_mac((*m), e, v)
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}
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}
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fn visit_enum_def<E>(enum_definition: ast::enum_def, tps: ~[ast::ty_param],
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e: E, v: vt<E>) {
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for enum_definition.variants.each |vr| {
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match vr.node.kind {
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tuple_variant_kind(variant_args) => {
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for variant_args.each |va| { (v.visit_ty)(va.ty, e, v); }
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}
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struct_variant_kind(struct_def) => {
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(v.visit_struct_def)(struct_def, vr.node.name, tps,
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vr.node.id, e, v);
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}
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enum_variant_kind(ref enum_definition) => {
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visit_enum_def((*enum_definition), tps, e, v);
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}
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}
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// Visit the disr expr if it exists
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vr.node.disr_expr.iter(|ex| (v.visit_expr)(*ex, e, v));
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}
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}
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fn skip_ty<E>(_t: @Ty, _e: E, _v: vt<E>) {}
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fn visit_ty<E>(t: @Ty, e: E, v: vt<E>) {
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match t.node {
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ty_box(mt) | ty_uniq(mt) |
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ty_vec(mt) | ty_ptr(mt) | ty_rptr(_, mt) => {
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(v.visit_ty)(mt.ty, e, v);
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}
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ty_rec(ref flds) => for (*flds).each |f| {
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(v.visit_ty)(f.node.mt.ty, e, v);
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},
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ty_tup(ts) => for ts.each |tt| {
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(v.visit_ty)(*tt, e, v);
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},
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ty_fn(f) => {
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for f.decl.inputs.each |a| { (v.visit_ty)(a.ty, e, v); }
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visit_ty_param_bounds(f.bounds, e, v);
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(v.visit_ty)(f.decl.output, e, v);
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}
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ty_path(p, _) => visit_path(p, e, v),
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ty_fixed_length_vec(mt, _) => (v.visit_ty)(mt.ty, e, v),
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ty_nil |
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ty_bot |
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ty_mac(_) |
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ty_infer => ()
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}
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}
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fn visit_path<E>(p: @path, e: E, v: vt<E>) {
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for p.types.each |tp| { (v.visit_ty)(*tp, e, v); }
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}
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fn visit_pat<E>(p: @pat, e: E, v: vt<E>) {
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match p.node {
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pat_enum(path, children) => {
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visit_path(path, e, v);
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do option::iter(&children) |children| {
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for children.each |child| { (v.visit_pat)(*child, e, v); }}
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}
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pat_rec(fields, _) => for fields.each |f| {
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(v.visit_pat)(f.pat, e, v)
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},
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pat_struct(path, fields, _) => {
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visit_path(path, e, v);
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for fields.each |f| {
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(v.visit_pat)(f.pat, e, v);
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}
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}
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pat_tup(elts) => for elts.each |elt| {
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(v.visit_pat)(*elt, e, v)
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},
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pat_box(inner) | pat_uniq(inner) | pat_region(inner) =>
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(v.visit_pat)(inner, e, v),
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pat_ident(_, path, inner) => {
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visit_path(path, e, v);
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do option::iter(&inner) |subpat| { (v.visit_pat)(*subpat, e, v)};
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}
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pat_lit(ex) => (v.visit_expr)(ex, e, v),
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pat_range(e1, e2) => {
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(v.visit_expr)(e1, e, v);
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(v.visit_expr)(e2, e, v);
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}
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pat_wild => ()
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}
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}
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fn visit_foreign_item<E>(ni: @foreign_item, e: E, v: vt<E>) {
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match ni.node {
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foreign_item_fn(fd, _, tps) => {
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(v.visit_ty_params)(tps, e, v);
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visit_fn_decl(fd, e, v);
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}
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foreign_item_const(t) => {
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(v.visit_ty)(t, e, v);
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}
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}
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}
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fn visit_ty_param_bounds<E>(bounds: @~[ty_param_bound], e: E, v: vt<E>) {
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for vec::each(*bounds) |bound| {
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(v.visit_ty)(**bound, e, v)
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}
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}
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fn visit_ty_params<E>(tps: ~[ty_param], e: E, v: vt<E>) {
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for tps.each |tp| {
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visit_ty_param_bounds(tp.bounds, e, v);
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}
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}
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fn visit_fn_decl<E>(fd: fn_decl, e: E, v: vt<E>) {
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for fd.inputs.each |a| {
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(v.visit_pat)(a.pat, e, v);
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(v.visit_ty)(a.ty, e, v);
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}
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(v.visit_ty)(fd.output, e, v);
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}
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// Note: there is no visit_method() method in the visitor, instead override
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// visit_fn() and check for fk_method(). I named this visit_method_helper()
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// because it is not a default impl of any method, though I doubt that really
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// clarifies anything. - Niko
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fn visit_method_helper<E>(m: @method, e: E, v: vt<E>) {
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(v.visit_fn)(fk_method(/* FIXME (#2543) */ copy m.ident,
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/* FIXME (#2543) */ copy m.tps, m),
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m.decl, m.body, m.span, m.id, e, v);
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}
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fn visit_struct_dtor_helper<E>(dtor: struct_dtor, tps: ~[ty_param],
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parent_id: def_id, e: E, v: vt<E>) {
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(v.visit_fn)(fk_dtor(/* FIXME (#2543) */ copy tps, dtor.node.attrs,
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dtor.node.self_id, parent_id), ast_util::dtor_dec(),
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dtor.node.body, dtor.span, dtor.node.id, e, v)
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}
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fn visit_fn<E>(fk: fn_kind, decl: fn_decl, body: blk, _sp: span,
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_id: node_id, e: E, v: vt<E>) {
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visit_fn_decl(decl, e, v);
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(v.visit_ty_params)(tps_of_fn(fk), e, v);
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(v.visit_block)(body, e, v);
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}
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fn visit_ty_method<E>(m: ty_method, e: E, v: vt<E>) {
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for m.decl.inputs.each |a| { (v.visit_ty)(a.ty, e, v); }
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(v.visit_ty_params)(m.tps, e, v);
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(v.visit_ty)(m.decl.output, e, v);
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}
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fn visit_trait_method<E>(m: trait_method, e: E, v: vt<E>) {
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match m {
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required(ref ty_m) => (v.visit_ty_method)((*ty_m), e, v),
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provided(m) => visit_method_helper(m, e, v)
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}
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}
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fn visit_struct_def<E>(sd: @struct_def, _nm: ast::ident, tps: ~[ty_param],
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id: node_id, e: E, v: vt<E>) {
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for sd.fields.each |f| {
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(v.visit_struct_field)(*f, e, v);
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}
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do option::iter(&sd.dtor) |dtor| {
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visit_struct_dtor_helper(*dtor, tps, ast_util::local_def(id), e, v)
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};
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}
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fn visit_struct_field<E>(sf: @struct_field, e: E, v: vt<E>) {
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(v.visit_ty)(sf.node.ty, e, v);
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}
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fn visit_struct_method<E>(m: @method, e: E, v: vt<E>) {
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visit_method_helper(m, e, v);
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}
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fn visit_block<E>(b: ast::blk, e: E, v: vt<E>) {
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for b.node.view_items.each |vi| {
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(v.visit_view_item)(*vi, e, v);
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}
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for b.node.stmts.each |s| {
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(v.visit_stmt)(*s, e, v);
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}
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visit_expr_opt(b.node.expr, e, v);
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}
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fn visit_stmt<E>(s: @stmt, e: E, v: vt<E>) {
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match s.node {
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stmt_decl(d, _) => (v.visit_decl)(d, e, v),
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stmt_expr(ex, _) => (v.visit_expr)(ex, e, v),
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stmt_semi(ex, _) => (v.visit_expr)(ex, e, v),
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stmt_mac(ref mac, _) => visit_mac((*mac), e, v)
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}
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}
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fn visit_decl<E>(d: @decl, e: E, v: vt<E>) {
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match d.node {
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decl_local(locs) => for locs.each |loc| {
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(v.visit_local)(*loc, e, v)
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},
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decl_item(it) => (v.visit_item)(it, e, v)
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}
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}
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fn visit_expr_opt<E>(eo: Option<@expr>, e: E, v: vt<E>) {
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match eo { None => (), Some(ex) => (v.visit_expr)(ex, e, v) }
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}
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fn visit_exprs<E>(exprs: ~[@expr], e: E, v: vt<E>) {
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for exprs.each |ex| { (v.visit_expr)(*ex, e, v); }
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}
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fn visit_mac<E>(_m: mac, _e: E, _v: vt<E>) {
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/* no user-serviceable parts inside */
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}
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fn visit_expr<E>(ex: @expr, e: E, v: vt<E>) {
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match ex.node {
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expr_vstore(x, _) => (v.visit_expr)(x, e, v),
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expr_vec(es, _) => visit_exprs(es, e, v),
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expr_repeat(element, count, _) => {
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(v.visit_expr)(element, e, v);
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(v.visit_expr)(count, e, v);
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}
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expr_rec(ref flds, base) => {
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for (*flds).each |f| { (v.visit_expr)(f.node.expr, e, v); }
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visit_expr_opt(base, e, v);
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}
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expr_struct(p, ref flds, base) => {
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visit_path(p, e, v);
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for (*flds).each |f| { (v.visit_expr)(f.node.expr, e, v); }
|
|
visit_expr_opt(base, e, v);
|
|
}
|
|
expr_tup(elts) => for elts.each |el| { (v.visit_expr)(*el, e, v); },
|
|
expr_call(callee, args, _) => {
|
|
visit_exprs(args, e, v);
|
|
(v.visit_expr)(callee, e, v);
|
|
}
|
|
expr_method_call(callee, _, tys, args, _) => {
|
|
visit_exprs(args, e, v);
|
|
for tys.each |tp| { (v.visit_ty)(*tp, e, v); }
|
|
(v.visit_expr)(callee, e, v);
|
|
}
|
|
expr_binary(_, a, b) => {
|
|
(v.visit_expr)(a, e, v); (v.visit_expr)(b, e, v);
|
|
}
|
|
expr_addr_of(_, x) | expr_unary(_, x) |
|
|
expr_loop_body(x) | expr_do_body(x) |
|
|
expr_assert(x) => (v.visit_expr)(x, e, v),
|
|
expr_lit(_) => (),
|
|
expr_cast(x, t) => { (v.visit_expr)(x, e, v); (v.visit_ty)(t, e, v); }
|
|
expr_if(x, ref b, eo) => {
|
|
(v.visit_expr)(x, e, v);
|
|
(v.visit_block)((*b), e, v);
|
|
visit_expr_opt(eo, e, v);
|
|
}
|
|
expr_while(x, ref b) => {
|
|
(v.visit_expr)(x, e, v);
|
|
(v.visit_block)((*b), e, v);
|
|
}
|
|
expr_loop(ref b, _) => (v.visit_block)((*b), e, v),
|
|
expr_match(x, ref arms) => {
|
|
(v.visit_expr)(x, e, v);
|
|
for (*arms).each |a| { (v.visit_arm)(*a, e, v); }
|
|
}
|
|
expr_fn(proto, decl, ref body, cap_clause) => {
|
|
(v.visit_fn)(fk_anon(proto, cap_clause), decl, (*body),
|
|
ex.span, ex.id, e, v);
|
|
}
|
|
expr_fn_block(decl, ref body, cap_clause) => {
|
|
(v.visit_fn)(fk_fn_block(cap_clause), decl, (*body),
|
|
ex.span, ex.id, e, v);
|
|
}
|
|
expr_block(ref b) => (v.visit_block)((*b), e, v),
|
|
expr_assign(a, b) => {
|
|
(v.visit_expr)(b, e, v);
|
|
(v.visit_expr)(a, e, v);
|
|
}
|
|
expr_copy(a) => (v.visit_expr)(a, e, v),
|
|
expr_unary_move(a) => (v.visit_expr)(a, e, v),
|
|
expr_swap(a, b) => { (v.visit_expr)(a, e, v); (v.visit_expr)(b, e, v); }
|
|
expr_assign_op(_, a, b) => {
|
|
(v.visit_expr)(b, e, v);
|
|
(v.visit_expr)(a, e, v);
|
|
}
|
|
expr_field(x, _, tys) => {
|
|
(v.visit_expr)(x, e, v);
|
|
for tys.each |tp| { (v.visit_ty)(*tp, e, v); }
|
|
}
|
|
expr_index(a, b) => {
|
|
(v.visit_expr)(a, e, v);
|
|
(v.visit_expr)(b, e, v);
|
|
}
|
|
expr_path(p) => visit_path(p, e, v),
|
|
expr_fail(eo) => visit_expr_opt(eo, e, v),
|
|
expr_break(_) => (),
|
|
expr_again(_) => (),
|
|
expr_ret(eo) => visit_expr_opt(eo, e, v),
|
|
expr_log(_, lv, x) => {
|
|
(v.visit_expr)(lv, e, v);
|
|
(v.visit_expr)(x, e, v);
|
|
}
|
|
expr_mac(ref mac) => visit_mac((*mac), e, v),
|
|
expr_paren(x) => (v.visit_expr)(x, e, v),
|
|
}
|
|
(v.visit_expr_post)(ex, e, v);
|
|
}
|
|
|
|
fn visit_arm<E>(a: arm, e: E, v: vt<E>) {
|
|
for a.pats.each |p| { (v.visit_pat)(*p, e, v); }
|
|
visit_expr_opt(a.guard, e, v);
|
|
(v.visit_block)(a.body, e, v);
|
|
}
|
|
|
|
// Simpler, non-context passing interface. Always walks the whole tree, simply
|
|
// calls the given functions on the nodes.
|
|
|
|
type simple_visitor =
|
|
@{visit_mod: fn@(_mod, span, node_id),
|
|
visit_view_item: fn@(@view_item),
|
|
visit_foreign_item: fn@(@foreign_item),
|
|
visit_item: fn@(@item),
|
|
visit_local: fn@(@local),
|
|
visit_block: fn@(ast::blk),
|
|
visit_stmt: fn@(@stmt),
|
|
visit_arm: fn@(arm),
|
|
visit_pat: fn@(@pat),
|
|
visit_decl: fn@(@decl),
|
|
visit_expr: fn@(@expr),
|
|
visit_expr_post: fn@(@expr),
|
|
visit_ty: fn@(@Ty),
|
|
visit_ty_params: fn@(~[ty_param]),
|
|
visit_fn: fn@(fn_kind, fn_decl, blk, span, node_id),
|
|
visit_ty_method: fn@(ty_method),
|
|
visit_trait_method: fn@(trait_method),
|
|
visit_struct_def: fn@(@struct_def, ident, ~[ty_param], node_id),
|
|
visit_struct_field: fn@(@struct_field),
|
|
visit_struct_method: fn@(@method)};
|
|
|
|
fn simple_ignore_ty(_t: @Ty) {}
|
|
|
|
fn default_simple_visitor() -> simple_visitor {
|
|
return @{visit_mod: fn@(_m: _mod, _sp: span, _id: node_id) { },
|
|
visit_view_item: fn@(_vi: @view_item) { },
|
|
visit_foreign_item: fn@(_ni: @foreign_item) { },
|
|
visit_item: fn@(_i: @item) { },
|
|
visit_local: fn@(_l: @local) { },
|
|
visit_block: fn@(_b: ast::blk) { },
|
|
visit_stmt: fn@(_s: @stmt) { },
|
|
visit_arm: fn@(_a: arm) { },
|
|
visit_pat: fn@(_p: @pat) { },
|
|
visit_decl: fn@(_d: @decl) { },
|
|
visit_expr: fn@(_e: @expr) { },
|
|
visit_expr_post: fn@(_e: @expr) { },
|
|
visit_ty: simple_ignore_ty,
|
|
visit_ty_params: fn@(_ps: ~[ty_param]) {},
|
|
visit_fn: fn@(_fk: fn_kind, _d: fn_decl, _b: blk, _sp: span,
|
|
_id: node_id) { },
|
|
visit_ty_method: fn@(_m: ty_method) { },
|
|
visit_trait_method: fn@(_m: trait_method) { },
|
|
visit_struct_def: fn@(_sd: @struct_def, _nm: ident,
|
|
_tps: ~[ty_param], _id: node_id) { },
|
|
visit_struct_field: fn@(_f: @struct_field) { },
|
|
visit_struct_method: fn@(_m: @method) { }
|
|
};
|
|
}
|
|
|
|
fn mk_simple_visitor(v: simple_visitor) -> vt<()> {
|
|
fn v_mod(f: fn@(_mod, span, node_id), m: _mod, sp: span, id: node_id,
|
|
&&e: (), v: vt<()>) {
|
|
f(m, sp, id);
|
|
visit_mod(m, sp, id, e, v);
|
|
}
|
|
fn v_view_item(f: fn@(@view_item), vi: @view_item, &&e: (), v: vt<()>) {
|
|
f(vi);
|
|
visit_view_item(vi, e, v);
|
|
}
|
|
fn v_foreign_item(f: fn@(@foreign_item), ni: @foreign_item, &&e: (),
|
|
v: vt<()>) {
|
|
f(ni);
|
|
visit_foreign_item(ni, e, v);
|
|
}
|
|
fn v_item(f: fn@(@item), i: @item, &&e: (), v: vt<()>) {
|
|
f(i);
|
|
visit_item(i, e, v);
|
|
}
|
|
fn v_local(f: fn@(@local), l: @local, &&e: (), v: vt<()>) {
|
|
f(l);
|
|
visit_local(l, e, v);
|
|
}
|
|
fn v_block(f: fn@(ast::blk), bl: ast::blk, &&e: (), v: vt<()>) {
|
|
f(bl);
|
|
visit_block(bl, e, v);
|
|
}
|
|
fn v_stmt(f: fn@(@stmt), st: @stmt, &&e: (), v: vt<()>) {
|
|
f(st);
|
|
visit_stmt(st, e, v);
|
|
}
|
|
fn v_arm(f: fn@(arm), a: arm, &&e: (), v: vt<()>) {
|
|
f(a);
|
|
visit_arm(a, e, v);
|
|
}
|
|
fn v_pat(f: fn@(@pat), p: @pat, &&e: (), v: vt<()>) {
|
|
f(p);
|
|
visit_pat(p, e, v);
|
|
}
|
|
fn v_decl(f: fn@(@decl), d: @decl, &&e: (), v: vt<()>) {
|
|
f(d);
|
|
visit_decl(d, e, v);
|
|
}
|
|
fn v_expr(f: fn@(@expr), ex: @expr, &&e: (), v: vt<()>) {
|
|
f(ex);
|
|
visit_expr(ex, e, v);
|
|
}
|
|
fn v_expr_post(f: fn@(@expr), ex: @expr, &&_e: (), _v: vt<()>) {
|
|
f(ex);
|
|
}
|
|
fn v_ty(f: fn@(@Ty), ty: @Ty, &&e: (), v: vt<()>) {
|
|
f(ty);
|
|
visit_ty(ty, e, v);
|
|
}
|
|
fn v_ty_method(f: fn@(ty_method), ty: ty_method, &&e: (), v: vt<()>) {
|
|
f(ty);
|
|
visit_ty_method(ty, e, v);
|
|
}
|
|
fn v_trait_method(f: fn@(trait_method), m: trait_method, &&e: (),
|
|
v: vt<()>) {
|
|
f(m);
|
|
visit_trait_method(m, e, v);
|
|
}
|
|
fn v_struct_def(f: fn@(@struct_def, ident, ~[ty_param], node_id),
|
|
sd: @struct_def, nm: ident, tps: ~[ty_param], id: node_id,
|
|
&&e: (), v: vt<()>) {
|
|
f(sd, nm, tps, id);
|
|
visit_struct_def(sd, nm, tps, id, e, v);
|
|
}
|
|
fn v_ty_params(f: fn@(~[ty_param]),
|
|
ps: ~[ty_param],
|
|
&&e: (), v: vt<()>) {
|
|
f(ps);
|
|
visit_ty_params(ps, e, v);
|
|
}
|
|
fn v_fn(f: fn@(fn_kind, fn_decl, blk, span, node_id),
|
|
fk: fn_kind, decl: fn_decl, body: blk, sp: span,
|
|
id: node_id, &&e: (), v: vt<()>) {
|
|
f(fk, decl, body, sp, id);
|
|
visit_fn(fk, decl, body, sp, id, e, v);
|
|
}
|
|
let visit_ty = |a,b,c| v_ty(v.visit_ty, a, b, c);
|
|
fn v_struct_field(f: fn@(@struct_field), sf: @struct_field, &&e: (),
|
|
v: vt<()>) {
|
|
f(sf);
|
|
visit_struct_field(sf, e, v);
|
|
}
|
|
fn v_struct_method(f: fn@(@method), m: @method, &&e: (), v: vt<()>) {
|
|
f(m);
|
|
visit_struct_method(m, e, v);
|
|
}
|
|
return mk_vt(@{visit_mod: |a,b,c,d,e|v_mod(v.visit_mod, a, b, c, d, e),
|
|
visit_view_item: |a,b,c|
|
|
v_view_item(v.visit_view_item, a, b, c),
|
|
visit_foreign_item:
|
|
|a,b,c|v_foreign_item(v.visit_foreign_item, a, b, c),
|
|
visit_item: |a,b,c|v_item(v.visit_item, a, b, c),
|
|
visit_local: |a,b,c|v_local(v.visit_local, a, b, c),
|
|
visit_block: |a,b,c|v_block(v.visit_block, a, b, c),
|
|
visit_stmt: |a,b,c|v_stmt(v.visit_stmt, a, b, c),
|
|
visit_arm: |a,b,c|v_arm(v.visit_arm, a, b, c),
|
|
visit_pat: |a,b,c|v_pat(v.visit_pat, a, b, c),
|
|
visit_decl: |a,b,c|v_decl(v.visit_decl, a, b, c),
|
|
visit_expr: |a,b,c|v_expr(v.visit_expr, a, b, c),
|
|
visit_expr_post: |a,b,c| v_expr_post(v.visit_expr_post,
|
|
a, b, c),
|
|
visit_ty: visit_ty,
|
|
visit_ty_params: |a,b,c|
|
|
v_ty_params(v.visit_ty_params, a, b, c),
|
|
visit_fn: |a,b,c,d,e,f,g|
|
|
v_fn(v.visit_fn, a, b, c, d, e, f, g),
|
|
visit_ty_method: |a,b,c|
|
|
v_ty_method(v.visit_ty_method, a, b, c),
|
|
visit_trait_method: |a,b,c|
|
|
v_trait_method(v.visit_trait_method, a, b, c),
|
|
visit_struct_def: |a,b,c,d,e,f|
|
|
v_struct_def(v.visit_struct_def, a, b, c, d, e, f),
|
|
visit_struct_field: |a,b,c|
|
|
v_struct_field(v.visit_struct_field, a, b, c),
|
|
visit_struct_method: |a,b,c|
|
|
v_struct_method(v.visit_struct_method, a, b, c)
|
|
});
|
|
}
|
|
|
|
// Local Variables:
|
|
// mode: rust
|
|
// fill-column: 78;
|
|
// indent-tabs-mode: nil
|
|
// c-basic-offset: 4
|
|
// buffer-file-coding-system: utf-8-unix
|
|
// End:
|