rust/src/libsyntax/visit.rs

614 lines
21 KiB
Rust
Raw Normal View History

import ast::*;
import codemap::span;
2011-06-08 15:48:19 -05:00
2011-06-10 10:29:34 -05:00
// Context-passing AST walker. Each overridden visit method has full control
// over what happens with its node, it can do its own traversal of the node's
// children (potentially passing in different contexts to each), call
// visit::visit_* to apply the default traversal algorithm (again, it can
// override the context), or prevent deeper traversal by doing nothing.
2011-07-26 09:35:31 -05:00
// Our typesystem doesn't do circular types, so the visitor record can not
2012-01-19 16:24:03 -06:00
// hold functions that take visitors. A vt enum is used to break the cycle.
2012-01-19 19:56:05 -06:00
enum vt<E> { mk_vt(visitor<E>), }
2011-06-08 15:48:19 -05:00
2012-01-19 16:24:03 -06:00
enum fn_kind {
fk_item_fn(ident, ~[ty_param]), //< an item declared with fn()
fk_method(ident, ~[ty_param], @method),
fk_anon(proto, capture_clause), //< an anonymous function like fn@(...)
fk_fn_block(capture_clause), //< a block {||...}
fk_ctor(ident, ~[attribute], ~[ty_param], node_id /* self id */,
def_id /* parent class id */), // class constructor
fk_dtor(~[ty_param], ~[attribute], node_id /* self id */,
def_id /* parent class id */) // class destructor
}
fn name_of_fn(fk: fn_kind) -> ident {
alt fk {
fk_item_fn(name, _) | fk_method(name, _, _)
| fk_ctor(name, _, _, _, _) { /* FIXME (#2543) */ copy name }
fk_anon(*) | fk_fn_block(*) { @~"anon" }
fk_dtor(*) { @~"drop" }
}
}
fn tps_of_fn(fk: fn_kind) -> ~[ty_param] {
alt fk {
fk_item_fn(_, tps) | fk_method(_, tps, _)
| fk_ctor(_, _, tps, _, _) | fk_dtor(tps, _, _, _) {
/* FIXME (#2543) */ copy tps
2012-06-07 23:53:47 -05:00
}
fk_anon(*) | fk_fn_block(*) { ~[] }
}
}
type visitor<E> =
@{visit_mod: fn@(_mod, span, node_id, E, vt<E>),
visit_view_item: fn@(@view_item, E, vt<E>),
visit_foreign_item: fn@(@foreign_item, E, vt<E>),
visit_item: fn@(@item, E, vt<E>),
visit_local: fn@(@local, E, vt<E>),
visit_block: fn@(ast::blk, E, vt<E>),
visit_stmt: fn@(@stmt, E, vt<E>),
visit_arm: fn@(arm, E, vt<E>),
visit_pat: fn@(@pat, E, vt<E>),
visit_decl: fn@(@decl, E, vt<E>),
visit_expr: fn@(@expr, E, vt<E>),
visit_expr_post: fn@(@expr, E, vt<E>),
visit_ty: fn@(@ty, E, vt<E>),
visit_ty_params: fn@(~[ty_param], E, vt<E>),
visit_fn: fn@(fn_kind, fn_decl, blk, span, node_id, E, vt<E>),
visit_ty_method: fn@(ty_method, E, vt<E>),
visit_trait_method: fn@(trait_method, E, vt<E>),
visit_class_item: fn@(@class_member, E, vt<E>)};
2011-06-08 15:48:19 -05:00
fn default_visitor<E>() -> visitor<E> {
2012-08-01 19:30:05 -05:00
return @{visit_mod: |a,b,c,d,e|visit_mod::<E>(a, b, c, d, e),
2012-06-30 18:19:07 -05:00
visit_view_item: |a,b,c|visit_view_item::<E>(a, b, c),
visit_foreign_item: |a,b,c|visit_foreign_item::<E>(a, b, c),
visit_item: |a,b,c|visit_item::<E>(a, b, c),
visit_local: |a,b,c|visit_local::<E>(a, b, c),
visit_block: |a,b,c|visit_block::<E>(a, b, c),
visit_stmt: |a,b,c|visit_stmt::<E>(a, b, c),
visit_arm: |a,b,c|visit_arm::<E>(a, b, c),
visit_pat: |a,b,c|visit_pat::<E>(a, b, c),
visit_decl: |a,b,c|visit_decl::<E>(a, b, c),
visit_expr: |a,b,c|visit_expr::<E>(a, b, c),
visit_expr_post: |_a,_b,_c| (),
2012-06-30 18:19:07 -05:00
visit_ty: |a,b,c|skip_ty::<E>(a, b, c),
visit_ty_params: |a,b,c|visit_ty_params::<E>(a, b, c),
visit_fn: |a,b,c,d,e,f,g|visit_fn::<E>(a, b, c, d, e, f, g),
visit_ty_method: |a,b,c|visit_ty_method::<E>(a, b, c),
visit_trait_method: |a,b,c|visit_trait_method::<E>(a, b, c),
2012-06-30 18:19:07 -05:00
visit_class_item: |a,b,c|visit_class_item::<E>(a, b, c)};
2011-06-08 15:48:19 -05:00
}
fn visit_crate<E>(c: crate, e: E, v: vt<E>) {
v.visit_mod(c.node.module, c.span, crate_node_id, e, v);
2011-06-08 15:48:19 -05:00
}
fn visit_crate_directive<E>(cd: @crate_directive, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt cd.node {
cdir_src_mod(_, _) { }
cdir_dir_mod(_, cdirs, _) {
2012-06-30 18:19:07 -05:00
for cdirs.each |cdir| {
2011-07-27 07:19:39 -05:00
visit_crate_directive(cdir, e, v);
}
}
cdir_view_item(vi) { v.visit_view_item(vi, e, v); }
cdir_syntax(_) { }
2011-06-09 08:50:20 -05:00
}
}
fn visit_mod<E>(m: _mod, _sp: span, _id: node_id, e: E, v: vt<E>) {
2012-06-30 18:19:07 -05:00
for m.view_items.each |vi| { v.visit_view_item(vi, e, v); }
for m.items.each |i| { v.visit_item(i, e, v); }
2011-06-08 15:48:19 -05:00
}
fn visit_view_item<E>(_vi: @view_item, _e: E, _v: vt<E>) { }
2011-06-09 08:50:20 -05:00
fn visit_local<E>(loc: @local, e: E, v: vt<E>) {
v.visit_pat(loc.node.pat, e, v);
v.visit_ty(loc.node.ty, e, v);
alt loc.node.init { none { } some(i) { v.visit_expr(i.expr, e, v); } }
}
fn visit_item<E>(i: @item, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt i.node {
item_const(t, ex) { v.visit_ty(t, e, v); v.visit_expr(ex, e, v); }
item_fn(decl, tp, body) {
v.visit_fn(fk_item_fn(/* FIXME (#2543) */ copy i.ident,
/* FIXME (#2543) */ copy tp), decl, body,
2012-06-07 23:53:47 -05:00
i.span, i.id, e, v);
}
item_mod(m) { v.visit_mod(m, i.span, i.id, e, v); }
item_foreign_mod(nm) {
2012-06-30 18:19:07 -05:00
for nm.view_items.each |vi| { v.visit_view_item(vi, e, v); }
for nm.items.each |ni| { v.visit_foreign_item(ni, e, v); }
2011-07-27 07:19:39 -05:00
}
item_ty(t, tps) {
v.visit_ty(t, e, v);
v.visit_ty_params(tps, e, v);
}
item_enum(variants, tps) {
v.visit_ty_params(tps, e, v);
2012-06-30 18:19:07 -05:00
for variants.each |vr| {
for vr.node.args.each |va| { v.visit_ty(va.ty, e, v); }
2011-07-27 07:19:39 -05:00
}
}
item_impl(tps, traits, ty, methods) {
v.visit_ty_params(tps, e, v);
for traits.each |p| {
visit_path(p.path, e, v);
}
v.visit_ty(ty, e, v);
2012-06-30 18:19:07 -05:00
for methods.each |m| {
visit_method_helper(m, e, v)
}
}
item_class(tps, traits, members, m_ctor, m_dtor) {
v.visit_ty_params(tps, e, v);
2012-06-30 18:19:07 -05:00
for members.each |m| {
v.visit_class_item(m, e, v);
}
for traits.each |p| { visit_path(p.path, e, v); }
do option::iter(m_ctor) |ctor| {
visit_class_ctor_helper(ctor, i.ident, tps,
ast_util::local_def(i.id), e, v);
};
2012-06-30 18:19:07 -05:00
do option::iter(m_dtor) |dtor| {
visit_class_dtor_helper(dtor, tps,
ast_util::local_def(i.id), e, v)
};
}
item_trait(tps, traits, methods) {
v.visit_ty_params(tps, e, v);
for traits.each |p| { visit_path(p.path, e, v); }
2012-06-30 18:19:07 -05:00
for methods.each |m| {
v.visit_trait_method(m, e, v);
}
}
2012-07-10 15:24:22 -05:00
item_mac(m) { visit_mac(m, e, v) }
2011-06-08 15:48:19 -05:00
}
}
fn visit_class_item<E>(cm: @class_member, e:E, v:vt<E>) {
alt cm.node {
instance_var(_, t, _, _, _) {
v.visit_ty(t, e, v);
}
class_method(m) {
visit_method_helper(m, e, v);
}
}
}
fn skip_ty<E>(_t: @ty, _e: E, _v: vt<E>) {}
fn visit_ty<E>(t: @ty, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt t.node {
2012-04-09 19:32:49 -05:00
ty_box(mt) | ty_uniq(mt) |
ty_vec(mt) | ty_ptr(mt) | ty_rptr(_, mt) {
v.visit_ty(mt.ty, e, v);
}
2011-07-27 07:19:39 -05:00
ty_rec(flds) {
2012-06-30 18:19:07 -05:00
for flds.each |f| { v.visit_ty(f.node.mt.ty, e, v); }
2011-07-27 07:19:39 -05:00
}
2012-06-30 18:19:07 -05:00
ty_tup(ts) { for ts.each |tt| { v.visit_ty(tt, e, v); } }
ty_fn(_, decl) {
2012-06-30 18:19:07 -05:00
for decl.inputs.each |a| { v.visit_ty(a.ty, e, v); }
v.visit_ty(decl.output, e, v);
2011-07-27 07:19:39 -05:00
}
ty_path(p, _) { visit_path(p, e, v); }
ty_fixed_length(t, _) {
2012-04-09 19:32:49 -05:00
v.visit_ty(t, e, v);
}
ty_nil |
ty_bot |
ty_mac(_) |
ty_infer {
}
2011-06-08 15:48:19 -05:00
}
}
fn visit_path<E>(p: @path, e: E, v: vt<E>) {
2012-06-30 18:19:07 -05:00
for p.types.each |tp| { v.visit_ty(tp, e, v); }
}
fn visit_pat<E>(p: @pat, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt p.node {
pat_enum(path, children) {
visit_path(path, e, v);
2012-06-30 18:19:07 -05:00
do option::iter(children) |children| {
for children.each |child| { v.visit_pat(child, e, v); }}
2011-07-27 07:19:39 -05:00
}
pat_rec(fields, _) {
2012-06-30 18:19:07 -05:00
for fields.each |f| { v.visit_pat(f.pat, e, v); }
2011-07-27 07:19:39 -05:00
}
2012-06-30 18:19:07 -05:00
pat_tup(elts) { for elts.each |elt| { v.visit_pat(elt, e, v); } }
pat_box(inner) | pat_uniq(inner) {
v.visit_pat(inner, e, v);
}
pat_ident(_, path, inner) {
visit_path(path, e, v);
2012-06-30 18:19:07 -05:00
do option::iter(inner) |subpat| { v.visit_pat(subpat, e, v)};
}
pat_lit(ex) { v.visit_expr(ex, e, v); }
pat_range(e1, e2) { v.visit_expr(e1, e, v); v.visit_expr(e2, e, v); }
pat_wild {}
2011-06-08 15:48:19 -05:00
}
}
fn visit_foreign_item<E>(ni: @foreign_item, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt ni.node {
foreign_item_fn(fd, tps) {
v.visit_ty_params(tps, e, v);
visit_fn_decl(fd, e, v);
}
2011-06-08 15:48:19 -05:00
}
}
fn visit_ty_params<E>(tps: ~[ty_param], e: E, v: vt<E>) {
2012-06-30 18:19:07 -05:00
for tps.each |tp| {
for vec::each(*tp.bounds) |bound| {
alt bound {
bound_trait(t) { v.visit_ty(t, e, v); }
bound_copy | bound_send | bound_const | bound_owned { }
}
}
}
}
fn visit_fn_decl<E>(fd: fn_decl, e: E, v: vt<E>) {
2012-06-30 18:19:07 -05:00
for fd.inputs.each |a| { v.visit_ty(a.ty, e, v); }
v.visit_ty(fd.output, e, v);
2011-06-08 15:48:19 -05:00
}
// Note: there is no visit_method() method in the visitor, instead override
// visit_fn() and check for fk_method(). I named this visit_method_helper()
// because it is not a default impl of any method, though I doubt that really
// clarifies anything. - Niko
fn visit_method_helper<E>(m: @method, e: E, v: vt<E>) {
v.visit_fn(fk_method(/* FIXME (#2543) */ copy m.ident,
/* FIXME (#2543) */ copy m.tps, m),
2012-06-07 23:53:47 -05:00
m.decl, m.body, m.span, m.id, e, v);
}
// Similar logic to the comment on visit_method_helper - Tim
fn visit_class_ctor_helper<E>(ctor: class_ctor, nm: ident, tps: ~[ty_param],
parent_id: def_id, e: E, v: vt<E>) {
v.visit_fn(fk_ctor(/* FIXME (#2543) */ copy nm,
ctor.node.attrs,
/* FIXME (#2543) */ copy tps,
ctor.node.self_id, parent_id),
ctor.node.dec, ctor.node.body, ctor.span, ctor.node.id, e, v)
}
fn visit_class_dtor_helper<E>(dtor: class_dtor, tps: ~[ty_param],
parent_id: def_id, e: E, v: vt<E>) {
v.visit_fn(fk_dtor(/* FIXME (#2543) */ copy tps, dtor.node.attrs,
dtor.node.self_id, parent_id), ast_util::dtor_dec(),
dtor.node.body, dtor.span, dtor.node.id, e, v)
}
fn visit_fn<E>(fk: fn_kind, decl: fn_decl, body: blk, _sp: span,
_id: node_id, e: E, v: vt<E>) {
visit_fn_decl(decl, e, v);
v.visit_ty_params(tps_of_fn(fk), e, v);
v.visit_block(body, e, v);
2011-06-08 15:48:19 -05:00
}
fn visit_ty_method<E>(m: ty_method, e: E, v: vt<E>) {
for m.decl.inputs.each |a| { v.visit_ty(a.ty, e, v); }
v.visit_ty_params(m.tps, e, v);
v.visit_ty(m.decl.output, e, v);
}
fn visit_trait_method<E>(m: trait_method, e: E, v: vt<E>) {
alt m {
required(ty_m) {
v.visit_ty_method(ty_m, e, v)
}
provided(m) {
visit_method_helper(m, e, v)
}
}
}
fn visit_block<E>(b: ast::blk, e: E, v: vt<E>) {
2012-06-30 18:19:07 -05:00
for b.node.view_items.each |vi| { v.visit_view_item(vi, e, v); }
for b.node.stmts.each |s| { v.visit_stmt(s, e, v); }
2011-06-08 15:48:19 -05:00
visit_expr_opt(b.node.expr, e, v);
}
fn visit_stmt<E>(s: @stmt, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt s.node {
stmt_decl(d, _) { v.visit_decl(d, e, v); }
stmt_expr(ex, _) { v.visit_expr(ex, e, v); }
stmt_semi(ex, _) { v.visit_expr(ex, e, v); }
2011-06-08 15:48:19 -05:00
}
}
fn visit_decl<E>(d: @decl, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt d.node {
decl_local(locs) {
2012-06-30 18:19:07 -05:00
for locs.each |loc| { v.visit_local(loc, e, v); }
2011-07-27 07:19:39 -05:00
}
decl_item(it) { v.visit_item(it, e, v); }
2011-06-08 15:48:19 -05:00
}
}
fn visit_expr_opt<E>(eo: option<@expr>, e: E, v: vt<E>) {
alt eo { none { } some(ex) { v.visit_expr(ex, e, v); } }
2011-06-08 15:48:19 -05:00
}
fn visit_exprs<E>(exprs: ~[@expr], e: E, v: vt<E>) {
2012-06-30 18:19:07 -05:00
for exprs.each |ex| { v.visit_expr(ex, e, v); }
2011-06-08 15:48:19 -05:00
}
fn visit_mac<E>(m: mac, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt m.node {
ast::mac_invoc(pth, arg, body) {
2012-06-30 18:19:07 -05:00
option::map(arg, |arg| v.visit_expr(arg, e, v)); }
2012-05-21 12:45:56 -05:00
ast::mac_invoc_tt(pth, tt) { /* no user-serviceable parts inside */ }
ast::mac_ellipsis { }
ast::mac_aq(_, e) { /* FIXME: maybe visit (Issue #2340) */ }
ast::mac_var(_) { }
}
}
fn visit_expr<E>(ex: @expr, e: E, v: vt<E>) {
2011-07-27 07:19:39 -05:00
alt ex.node {
2012-04-09 19:32:49 -05:00
expr_vstore(x, _) { v.visit_expr(x, e, v); }
2011-08-18 13:37:19 -05:00
expr_vec(es, _) { visit_exprs(es, e, v); }
expr_repeat(element, count, _) => {
v.visit_expr(element, e, v);
v.visit_expr(count, e, v);
}
2011-07-27 07:19:39 -05:00
expr_rec(flds, base) {
2012-06-30 18:19:07 -05:00
for flds.each |f| { v.visit_expr(f.node.expr, e, v); }
2011-07-27 07:19:39 -05:00
visit_expr_opt(base, e, v);
}
expr_struct(p, flds) {
visit_path(p, e, v);
for flds.each |f| { v.visit_expr(f.node.expr, e, v); }
}
2012-06-30 18:19:07 -05:00
expr_tup(elts) { for elts.each |el| { v.visit_expr(el, e, v); } }
expr_call(callee, args, _) {
2011-07-27 07:19:39 -05:00
visit_exprs(args, e, v);
v.visit_expr(callee, e, v);
2011-07-27 07:19:39 -05:00
}
expr_binary(_, a, b) { v.visit_expr(a, e, v); v.visit_expr(b, e, v); }
2012-06-18 19:42:09 -05:00
expr_addr_of(_, x) | expr_unary(_, x) |
expr_loop_body(x) | expr_do_body(x) |
expr_assert(x) { v.visit_expr(x, e, v); }
2011-07-27 07:19:39 -05:00
expr_lit(_) { }
expr_cast(x, t) { v.visit_expr(x, e, v); v.visit_ty(t, e, v); }
expr_if(x, b, eo) {
v.visit_expr(x, e, v);
v.visit_block(b, e, v);
visit_expr_opt(eo, e, v);
}
expr_while(x, b) { v.visit_expr(x, e, v); v.visit_block(b, e, v); }
expr_loop(b) { v.visit_block(b, e, v); }
expr_alt(x, arms, _) {
2011-07-27 07:19:39 -05:00
v.visit_expr(x, e, v);
2012-06-30 18:19:07 -05:00
for arms.each |a| { v.visit_arm(a, e, v); }
2011-07-27 07:19:39 -05:00
}
expr_fn(proto, decl, body, cap_clause) {
v.visit_fn(fk_anon(proto, cap_clause), decl, body,
ex.span, ex.id, e, v);
}
expr_fn_block(decl, body, cap_clause) {
v.visit_fn(fk_fn_block(cap_clause), decl, body,
ex.span, ex.id, e, v);
}
2011-07-27 07:19:39 -05:00
expr_block(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); }
2011-07-27 07:19:39 -05:00
expr_move(a, b) { v.visit_expr(b, e, v); 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);
2012-06-30 18:19:07 -05:00
for tys.each |tp| { v.visit_ty(tp, e, v); }
}
2011-07-27 07:19:39 -05:00
expr_index(a, b) { v.visit_expr(a, e, v); v.visit_expr(b, e, v); }
expr_path(p) { visit_path(p, e, v); }
2011-07-27 07:19:39 -05:00
expr_fail(eo) { visit_expr_opt(eo, e, v); }
expr_break { }
expr_again { }
2011-07-27 07:19:39 -05:00
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);
}
2011-07-27 07:19:39 -05:00
expr_mac(mac) { visit_mac(mac, e, v); }
2011-06-08 15:48:19 -05:00
}
v.visit_expr_post(ex, e, v);
2011-06-08 15:48:19 -05:00
}
fn visit_arm<E>(a: arm, e: E, v: vt<E>) {
2012-06-30 18:19:07 -05:00
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);
2011-06-08 15:48:19 -05:00
}
2011-07-26 09:35:31 -05:00
// 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_class_item: fn@(@class_member)};
2011-07-26 09:35:31 -05:00
fn simple_ignore_ty(_t: @ty) {}
2011-07-26 09:35:31 -05:00
fn default_simple_visitor() -> simple_visitor {
2012-08-01 19:30:05 -05:00
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_class_item: fn@(_c: @class_member) {}
};
2011-07-26 09:35:31 -05:00
}
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);
2011-07-26 09:35:31 -05:00
}
fn v_view_item(f: fn@(@view_item), vi: @view_item, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(vi);
visit_view_item(vi, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_foreign_item(f: fn@(@foreign_item), ni: @foreign_item, &&e: (),
v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(ni);
visit_foreign_item(ni, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_item(f: fn@(@item), i: @item, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(i);
visit_item(i, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_local(f: fn@(@local), l: @local, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(l);
visit_local(l, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_block(f: fn@(ast::blk), bl: ast::blk, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(bl);
visit_block(bl, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_stmt(f: fn@(@stmt), st: @stmt, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(st);
visit_stmt(st, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_arm(f: fn@(arm), a: arm, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(a);
visit_arm(a, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_pat(f: fn@(@pat), p: @pat, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(p);
visit_pat(p, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_decl(f: fn@(@decl), d: @decl, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(d);
visit_decl(d, e, v);
2011-07-26 09:35:31 -05:00
}
fn v_expr(f: fn@(@expr), ex: @expr, &&e: (), v: vt<()>) {
2011-07-27 07:19:39 -05:00
f(ex);
visit_expr(ex, e, v);
2011-07-26 09:35:31 -05:00
}
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<()>) {
2011-07-27 07:19:39 -05:00
f(ty);
visit_ty(ty, e, v);
2011-07-26 09:35:31 -05:00
}
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_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);
2011-07-26 09:35:31 -05:00
}
let visit_ty = if v.visit_ty == simple_ignore_ty {
2012-06-30 18:19:07 -05:00
|a,b,c| skip_ty(a, b, c)
} else {
2012-06-30 18:19:07 -05:00
|a,b,c| v_ty(v.visit_ty, a, b, c)
};
fn v_class_item(f: fn@(@class_member),
cm: @class_member, &&e: (),
v: vt<()>) {
f(cm);
visit_class_item(cm, e, v);
}
2012-08-01 19:30:05 -05:00
return mk_vt(@{visit_mod: |a,b,c,d,e|v_mod(v.visit_mod, a, b, c, d, e),
2012-06-30 18:19:07 -05:00
visit_view_item: |a,b,c|
v_view_item(v.visit_view_item, a, b, c),
visit_foreign_item:
2012-06-30 18:19:07 -05:00
|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,
2012-06-30 18:19:07 -05:00
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),
2012-06-30 18:19:07 -05:00
visit_class_item: |a,b,c|
2012-06-19 21:34:01 -05:00
v_class_item(v.visit_class_item, a, b, c)
});
2011-07-26 09:35:31 -05:00
}
2011-06-08 15:48:19 -05:00
// Local Variables:
// mode: rust
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// End: