Add the beginnings of an ast folder plus an empty module for resolve.
This commit is contained in:
Graydon Hoare
parent
5f2d35ed08
commit
fa5ef4cfb6
6 changed files with 528 additions and 5 deletions
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@ -76,7 +76,7 @@ tag stmt_ {
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type decl = spanned[decl_];
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tag decl_ {
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decl_local(ident, option[@ty], ty);
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decl_local(ident, bool, option[@ty]);
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decl_item(name, @item);
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}
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@ -126,8 +126,9 @@ tag mode {
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}
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type slot = rec(@ty ty, mode mode, option[slot_id] id);
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type input = rec(slot slot, ident ident);
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type _fn = rec(vec[rec(slot slot, ident ident)] inputs,
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type _fn = rec(vec[input] inputs,
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slot output,
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block body);
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@ -651,7 +651,7 @@ io fn parse_item(parser p) -> tup(ast.ident, @ast.item) {
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fail;
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}
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io fn parse_crate(parser p) -> ast.crate {
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io fn parse_crate(parser p) -> @ast.crate {
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auto lo = p.get_span();
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auto hi = lo;
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let ast._mod m = new_str_hash[@ast.item]();
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@ -660,7 +660,7 @@ io fn parse_crate(parser p) -> ast.crate {
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m.insert(i._0, i._1);
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hi = i._1.span;
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}
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ret spanned(lo, hi, rec(module=m));
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ret @spanned(lo, hi, rec(module=m));
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}
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//
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514
src/comp/middle/fold.rs
Normal file
514
src/comp/middle/fold.rs
Normal file
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@ -0,0 +1,514 @@
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import std.map.hashmap;
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import front.ast;
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import util.common.new_str_hash;
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import util.common.spanned;
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import util.common.span;
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import util.common.option;
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import util.common.some;
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import util.common.none;
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import util.common.ty_mach;
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import std._vec;
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import std.util.operator;
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type slot[TY] = rec(TY ty, ast.mode mode, option[ast.slot_id] id);
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type input[T] = rec(slot[T] slot, ast.ident ident);
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type name[TY] = rec(ast.ident ident, vec[TY] types);
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type ast_fold[ENV,
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NAME,TY,EXPR,STMT,BLOCK,
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FN,MOD,DECL,ITEM,CRATE] =
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@rec
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(
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// Name fold.
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(fn(&ENV e, &span sp, &name[TY] name) -> NAME) fold_name,
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// Type folds.
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(fn(&ENV e, &span sp) -> TY) fold_ty_nil,
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(fn(&ENV e, &span sp) -> TY) fold_ty_bool,
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(fn(&ENV e, &span sp) -> TY) fold_ty_int,
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(fn(&ENV e, &span sp) -> TY) fold_ty_uint,
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(fn(&ENV e, &span sp, ty_mach tm) -> TY) fold_ty_machine,
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(fn(&ENV e, &span sp) -> TY) fold_ty_char,
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(fn(&ENV e, &span sp) -> TY) fold_ty_str,
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(fn(&ENV e, &span sp, &TY t) -> TY) fold_ty_box,
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(fn(&ENV e, &span sp, &ast.path p,
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&option[ast.referent] r) -> TY) fold_ty_path,
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// Expr folds.
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(fn(&ENV e, &span sp,
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&vec[EXPR] es) -> EXPR) fold_expr_vec,
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(fn(&ENV e, &span sp,
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&vec[EXPR] es) -> EXPR) fold_expr_tup,
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(fn(&ENV e, &span sp,
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&vec[tup(ast.ident,EXPR)] fields) -> EXPR) fold_expr_rec,
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(fn(&ENV e, &span sp,
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&EXPR f, &vec[EXPR] args) -> EXPR) fold_expr_call,
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(fn(&ENV e, &span sp,
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ast.binop,
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&EXPR lhs, &EXPR rhs) -> EXPR) fold_expr_binary,
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(fn(&ENV e, &span sp,
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ast.unop, &EXPR e) -> EXPR) fold_expr_unary,
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(fn(&ENV e, &span sp,
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@ast.lit) -> EXPR) fold_expr_lit,
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(fn(&ENV e, &span sp,
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&NAME name,
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&option[ast.referent] r) -> EXPR) fold_expr_name,
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(fn(&ENV e, &span sp,
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&EXPR e, &ast.ident i) -> EXPR) fold_expr_field,
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(fn(&ENV e, &span sp,
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&EXPR e, &EXPR ix) -> EXPR) fold_expr_index,
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(fn(&ENV e, &span sp,
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&EXPR cond, &BLOCK thn,
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&option[BLOCK] els) -> EXPR) fold_expr_if,
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(fn(&ENV e, &span sp,
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&BLOCK blk) -> EXPR) fold_expr_block,
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// Decl folds.
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(fn(&ENV e, &span sp,
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&ast.ident ident, bool infer,
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&option[TY] ty) -> DECL) fold_decl_local,
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(fn(&ENV e, &span sp,
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&NAME name, ITEM item) -> DECL) fold_decl_item,
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// Stmt folds.
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(fn(&ENV e, &span sp, &DECL decl) -> STMT) fold_stmt_decl,
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(fn(&ENV e, &span sp, &option[EXPR] rv) -> STMT) fold_stmt_ret,
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(fn(&ENV e, &span sp, &EXPR e) -> STMT) fold_stmt_log,
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(fn(&ENV e, &span sp, &EXPR e) -> STMT) fold_stmt_expr,
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// Item folds.
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(fn(&ENV e, &span sp, &FN f, ast.item_id id) -> ITEM) fold_item_fn,
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(fn(&ENV e, &span sp, &MOD m) -> ITEM) fold_item_mod,
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(fn(&ENV e, &span sp, &TY t, ast.item_id id) -> ITEM) fold_item_ty,
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// Additional nodes.
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(fn(&ENV e, &span sp, &vec[STMT] stmts) -> BLOCK) fold_block,
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(fn(&ENV e, &vec[rec(slot[TY] slot, ast.ident ident)] inputs,
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&slot[TY] output, &BLOCK body) -> FN) fold_fn,
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(fn(&ENV e, hashmap[ast.ident,ITEM] m) -> MOD) fold_mod,
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(fn(&ENV e, &span sp, &MOD m) -> CRATE) fold_crate,
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// Env updates.
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(fn(&ENV e, &ast.crate c) -> ENV) update_env_for_crate,
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(fn(&ENV e, &ast.item i) -> ENV) update_env_for_item,
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(fn(&ENV e, &ast.stmt s) -> ENV) update_env_for_stmt,
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(fn(&ENV e, &ast.expr x) -> ENV) update_env_for_expr,
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(fn(&ENV e, &ast.ty t) -> ENV) update_env_for_ty,
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// Traversal control.
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(fn(&ENV v) -> bool) keep_going
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);
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//// Fold drivers.
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// FIXME: Finish these.
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// FIXME: Also, little more type-inference love would help here.
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fn fold_ty[E,N,T,X,S,B,F,M,D,I,C]
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(&E env, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld, @ast.ty ty) -> T {
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fail;
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}
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fn fold_block[E,N,T,X,S,B,F,M,D,I,C]
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(&E env, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld, &ast.block blk) -> B {
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fail;
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}
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fn fold_slot[E,N,T,X,S,B,F,M,D,I,C]
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(&E env, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld, &ast.slot s) -> slot[T] {
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auto ty = fold_ty[E,N,T,X,S,B,F,M,D,I,C](env, fld, s.ty);
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ret rec(ty=ty, mode=s.mode, id=s.id);
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}
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fn fold_fn[E,N,T,X,S,B,F,M,D,I,C]
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(&E env, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld, &ast._fn f) -> F {
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fn fold_input[E,N,T,X,S,B,F,M,D,I,C]
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(&E env, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld,
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&rec(ast.slot slot, ast.ident ident) i)
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-> input[T] {
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ret rec(slot=fold_slot[E,N,T,X,S,B,F,M,D,I,C](env, fld, i.slot),
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ident=i.ident);
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}
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let operator[ast.input,input[T]] fi =
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bind fold_input[E,N,T,X,S,B,F,M,D,I,C](env, fld, _);
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auto inputs = _vec.map[ast.input, input[T]](fi, f.inputs);
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auto output = fold_slot[E,N,T,X,S,B,F,M,D,I,C](env, fld, f.output);
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auto body = fold_block[E,N,T,X,S,B,F,M,D,I,C](env, fld, f.body);
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ret fld.fold_fn(env, inputs, output, body);
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}
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fn fold_item[E,N,T,X,S,B,F,M,D,I,C]
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(&E env, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld, @ast.item item) -> I {
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let E env_ = fld.update_env_for_item(env, *item);
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alt (item.node) {
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case (ast.item_fn(?ff, ?id)) {
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let F ff_ = fold_fn[E,N,T,X,S,B,F,M,D,I,C](env_, fld, ff);
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ret fld.fold_item_fn(env_, item.span, ff_, id);
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}
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case (ast.item_mod(?mm)) {
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let M mm_ = fold_mod[E,N,T,X,S,B,F,M,D,I,C](env_, fld, mm);
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ret fld.fold_item_mod(env_, item.span, mm_);
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}
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case (ast.item_ty(?ty, ?id)) {
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let T ty_ = fold_ty[E,N,T,X,S,B,F,M,D,I,C](env_, fld, ty);
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ret fld.fold_item_ty(env_, item.span, ty_, id);
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}
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}
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fail;
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}
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fn fold_mod[E,N,T,X,S,B,F,M,D,I,C]
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(&E e, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld, &ast._mod m_in) -> M {
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auto m_out = new_str_hash[I]();
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for each (tup(ast.ident, @ast.item) pairs in m_in.items()) {
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auto i = fold_item[E,N,T,X,S,B,F,M,D,I,C](e, fld, pairs._1);
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m_out.insert(pairs._0, i);
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}
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ret fld.fold_mod(e, m_out);
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}
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fn fold_crate[E,N,T,X,S,B,F,M,D,I,C]
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(&E env, ast_fold[E,N,T,X,S,B,F,M,D,I,C] fld, @ast.crate c) -> C {
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let E env_ = fld.update_env_for_crate(env, *c);
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let M m = fold_mod[E,N,T,X,S,B,F,M,D,I,C](env_, fld, c.node.module);
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ret fld.fold_crate(env_, c.span, m);
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}
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//// Identity folds.
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fn respan[T](&span sp, &T t) -> spanned[T] {
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ret rec(node=t, span=sp);
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}
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// Name identity.
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fn identity_fold_name[ENV](&ENV env, &span sp,
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&ast.name_ n) -> ast.name {
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ret respan(sp, n);
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}
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// Type identities.
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fn identity_fold_ty_nil[ENV](&ENV env, &span sp) -> @ast.ty {
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ret @respan(sp, ast.ty_nil);
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}
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fn identity_fold_ty_bool[ENV](&ENV env, &span sp) -> @ast.ty {
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ret @respan(sp, ast.ty_bool);
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}
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fn identity_fold_ty_int[ENV](&ENV env, &span sp) -> @ast.ty {
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ret @respan(sp, ast.ty_int);
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}
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fn identity_fold_ty_uint[ENV](&ENV env, &span sp) -> @ast.ty {
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ret @respan(sp, ast.ty_uint);
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}
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fn identity_fold_ty_machine[ENV](&ENV env, &span sp,
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ty_mach tm) -> @ast.ty {
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ret @respan(sp, ast.ty_machine(tm));
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}
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fn identity_fold_ty_char[ENV](&ENV env, &span sp) -> @ast.ty {
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ret @respan(sp, ast.ty_char);
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}
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fn identity_fold_ty_str[ENV](&ENV env, &span sp) -> @ast.ty {
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ret @respan(sp, ast.ty_str);
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}
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fn identity_fold_ty_box[ENV](&ENV env, &span sp, &@ast.ty t) -> @ast.ty {
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ret @respan(sp, ast.ty_box(t));
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}
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fn identity_fold_ty_path[ENV](&ENV env, &span sp, &ast.path p,
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&option[ast.referent] r) -> @ast.ty {
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ret @respan(sp, ast.ty_path(p, r));
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}
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// Expr identities.
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fn identity_fold_expr_vec[ENV](&ENV env, &span sp,
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&vec[@ast.expr] es) -> @ast.expr {
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ret @respan(sp, ast.expr_vec(es));
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}
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fn identity_fold_expr_tup[ENV](&ENV env, &span sp,
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&vec[@ast.expr] es) -> @ast.expr {
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ret @respan(sp, ast.expr_tup(es));
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}
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fn identity_fold_expr_rec[ENV](&ENV env, &span sp,
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&vec[tup(ast.ident,@ast.expr)] fields)
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-> @ast.expr {
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ret @respan(sp, ast.expr_rec(fields));
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}
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fn identity_fold_expr_call[ENV](&ENV env, &span sp, &@ast.expr f,
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&vec[@ast.expr] args) -> @ast.expr {
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ret @respan(sp, ast.expr_call(f, args));
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}
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fn identity_fold_expr_binary[ENV](&ENV env, &span sp, ast.binop b,
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&@ast.expr lhs,
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&@ast.expr rhs) -> @ast.expr {
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ret @respan(sp, ast.expr_binary(b, lhs, rhs));
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}
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fn identity_fold_expr_unary[ENV](&ENV env, &span sp,
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ast.unop u, &@ast.expr e) -> @ast.expr {
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ret @respan(sp, ast.expr_unary(u, e));
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}
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fn identity_fold_expr_lit[ENV](&ENV env, &span sp,
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@ast.lit lit) -> @ast.expr {
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ret @respan(sp, ast.expr_lit(lit));
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}
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fn identity_fold_expr_name[ENV](&ENV env, &span sp, &ast.name name,
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&option[ast.referent] r) -> @ast.expr {
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ret @respan(sp, ast.expr_name(name, r));
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}
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fn identity_fold_expr_field[ENV](&ENV env, &span sp,
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&@ast.expr e, &ast.ident i)
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-> @ast.expr {
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ret @respan(sp, ast.expr_field(e, i));
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}
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fn identity_fold_expr_index[ENV](&ENV env, &span sp,
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&@ast.expr e, &@ast.expr ix)
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-> @ast.expr {
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ret @respan(sp, ast.expr_index(e, ix));
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}
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fn identity_fold_expr_if[ENV](&ENV env, &span sp,
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&@ast.expr cond, &ast.block thn,
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&option[ast.block] els) -> @ast.expr {
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ret @respan(sp, ast.expr_if(cond, thn, els));
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}
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fn identity_fold_expr_block[ENV](&ENV env, &span sp,
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&ast.block blk) -> @ast.expr {
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ret @respan(sp, ast.expr_block(blk));
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}
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// Decl identities.
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fn identity_fold_decl_local[ENV](&ENV e, &span sp,
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&ast.ident ident, bool infer,
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&option[@ast.ty] ty) -> @ast.decl {
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ret @respan(sp, ast.decl_local(ident, infer, ty));
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}
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fn identity_fold_decl_item[ENV](&ENV e, &span sp,
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&ast.name name,
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@ast.item item) -> @ast.decl {
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ret @respan(sp, ast.decl_item(name, item));
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}
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// Stmt identities.
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fn identity_fold_stmt_decl[ENV](&ENV env, &span sp,
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&@ast.decl decl) -> @ast.stmt {
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ret @respan(sp, ast.stmt_decl(decl));
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}
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fn identity_fold_stmt_ret[ENV](&ENV env, &span sp,
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&option[@ast.expr] rv) -> @ast.stmt {
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ret @respan(sp, ast.stmt_ret(rv));
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}
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fn identity_fold_stmt_log[ENV](&ENV e, &span sp, &@ast.expr x) -> @ast.stmt {
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ret @respan(sp, ast.stmt_log(x));
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}
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fn identity_fold_stmt_expr[ENV](&ENV e, &span sp, &@ast.expr x) -> @ast.stmt {
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ret @respan(sp, ast.stmt_expr(x));
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}
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// Item identities.
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fn identity_fold_item_fn[ENV](&ENV e, &span sp, &ast._fn f,
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ast.item_id id) -> @ast.item {
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ret @respan(sp, ast.item_fn(f, id));
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}
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fn identity_fold_item_mod[ENV](&ENV e, &span sp, &ast._mod m) -> @ast.item {
|
||||
ret @respan(sp, ast.item_mod(m));
|
||||
}
|
||||
|
||||
fn identity_fold_item_ty[ENV](&ENV e, &span sp, &@ast.ty t,
|
||||
ast.item_id id) -> @ast.item {
|
||||
ret @respan(sp, ast.item_ty(t, id));
|
||||
}
|
||||
|
||||
|
||||
// Additional identities.
|
||||
|
||||
fn identity_fold_block[ENV](&ENV e, &span sp,
|
||||
&vec[@ast.stmt] stmts) -> ast.block {
|
||||
ret respan(sp, stmts);
|
||||
}
|
||||
|
||||
fn identity_fold_fn[ENV](&ENV e,
|
||||
&vec[rec(ast.slot slot, ast.ident ident)] inputs,
|
||||
&ast.slot output,
|
||||
&ast.block body) -> ast._fn {
|
||||
ret rec(inputs=inputs, output=output, body=body);
|
||||
}
|
||||
|
||||
fn identity_fold_mod[ENV](&ENV e,
|
||||
hashmap[ast.ident, @ast.item] m) -> ast._mod {
|
||||
ret m;
|
||||
}
|
||||
|
||||
fn identity_fold_crate[ENV](&ENV e, &span sp,
|
||||
&hashmap[ast.ident, @ast.item] m) -> @ast.crate {
|
||||
ret @respan(sp, rec(module=m));
|
||||
}
|
||||
|
||||
|
||||
// Env update identities.
|
||||
|
||||
fn identity_update_env_for_crate[ENV](&ENV e, &ast.crate c) -> ENV {
|
||||
ret e;
|
||||
}
|
||||
|
||||
fn identity_update_env_for_item[ENV](&ENV e, &ast.item i) -> ENV {
|
||||
ret e;
|
||||
}
|
||||
|
||||
fn identity_update_env_for_stmt[ENV](&ENV e, &ast.stmt s) -> ENV {
|
||||
ret e;
|
||||
}
|
||||
|
||||
fn identity_update_env_for_expr[ENV](&ENV e, &ast.expr x) -> ENV {
|
||||
ret e;
|
||||
}
|
||||
|
||||
fn identity_update_env_for_ty[ENV](&ENV e, &ast.ty t) -> ENV {
|
||||
ret e;
|
||||
}
|
||||
|
||||
|
||||
// Always-true traversal control fn.
|
||||
|
||||
fn always_keep_going[ENV](&ENV e) -> bool {
|
||||
ret true;
|
||||
}
|
||||
|
||||
|
||||
type identity_fold[ENV] = ast_fold[ENV,
|
||||
ast.name, @ast.ty, @ast.expr,
|
||||
@ast.stmt, ast.block, ast._fn,
|
||||
ast._mod, @ast.decl, @ast.item,
|
||||
@ast.crate];
|
||||
|
||||
type query_fold[ENV,T] = ast_fold[ENV,
|
||||
T,T,T,T,T,
|
||||
T,T,T,T,T];
|
||||
|
||||
fn new_identity_fold[ENV]() -> identity_fold[ENV] {
|
||||
ret @rec
|
||||
(
|
||||
fold_name = bind identity_fold_name[ENV](_,_,_),
|
||||
|
||||
fold_ty_nil = bind identity_fold_ty_nil[ENV](_,_),
|
||||
fold_ty_bool = bind identity_fold_ty_bool[ENV](_,_),
|
||||
fold_ty_int = bind identity_fold_ty_int[ENV](_,_),
|
||||
fold_ty_uint = bind identity_fold_ty_uint[ENV](_,_),
|
||||
fold_ty_machine = bind identity_fold_ty_machine[ENV](_,_,_),
|
||||
fold_ty_char = bind identity_fold_ty_char[ENV](_,_),
|
||||
fold_ty_str = bind identity_fold_ty_str[ENV](_,_),
|
||||
fold_ty_box = bind identity_fold_ty_box[ENV](_,_,_),
|
||||
fold_ty_path = bind identity_fold_ty_path[ENV](_,_,_,_),
|
||||
|
||||
fold_expr_vec = bind identity_fold_expr_vec[ENV](_,_,_),
|
||||
fold_expr_tup = bind identity_fold_expr_tup[ENV](_,_,_),
|
||||
fold_expr_rec = bind identity_fold_expr_rec[ENV](_,_,_),
|
||||
fold_expr_call = bind identity_fold_expr_call[ENV](_,_,_,_),
|
||||
fold_expr_binary = bind identity_fold_expr_binary[ENV](_,_,_,_,_),
|
||||
fold_expr_unary = bind identity_fold_expr_unary[ENV](_,_,_,_),
|
||||
fold_expr_lit = bind identity_fold_expr_lit[ENV](_,_,_),
|
||||
fold_expr_name = bind identity_fold_expr_name[ENV](_,_,_,_),
|
||||
fold_expr_field = bind identity_fold_expr_field[ENV](_,_,_,_),
|
||||
fold_expr_index = bind identity_fold_expr_index[ENV](_,_,_,_),
|
||||
fold_expr_if = bind identity_fold_expr_if[ENV](_,_,_,_,_),
|
||||
fold_expr_block = bind identity_fold_expr_block[ENV](_,_,_),
|
||||
|
||||
fold_decl_local = bind identity_fold_decl_local[ENV](_,_,_,_,_),
|
||||
fold_decl_item = bind identity_fold_decl_item[ENV](_,_,_,_),
|
||||
|
||||
fold_stmt_decl = bind identity_fold_stmt_decl[ENV](_,_,_),
|
||||
fold_stmt_ret = bind identity_fold_stmt_ret[ENV](_,_,_),
|
||||
fold_stmt_log = bind identity_fold_stmt_log[ENV](_,_,_),
|
||||
fold_stmt_expr = bind identity_fold_stmt_expr[ENV](_,_,_),
|
||||
|
||||
fold_item_fn = bind identity_fold_item_fn[ENV](_,_,_,_),
|
||||
fold_item_mod = bind identity_fold_item_mod[ENV](_,_,_),
|
||||
fold_item_ty = bind identity_fold_item_ty[ENV](_,_,_,_),
|
||||
|
||||
fold_block = bind identity_fold_block[ENV](_,_,_),
|
||||
fold_fn = bind identity_fold_fn[ENV](_,_,_,_),
|
||||
fold_mod = bind identity_fold_mod[ENV](_,_),
|
||||
fold_crate = bind identity_fold_crate[ENV](_,_,_),
|
||||
|
||||
update_env_for_crate = bind identity_update_env_for_crate[ENV](_,_),
|
||||
update_env_for_item = bind identity_update_env_for_item[ENV](_,_),
|
||||
update_env_for_stmt = bind identity_update_env_for_stmt[ENV](_,_),
|
||||
update_env_for_expr = bind identity_update_env_for_expr[ENV](_,_),
|
||||
update_env_for_ty = bind identity_update_env_for_ty[ENV](_,_),
|
||||
|
||||
keep_going = bind always_keep_going[ENV](_)
|
||||
);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// Local Variables:
|
||||
// mode: rust
|
||||
// fill-column: 78;
|
||||
// indent-tabs-mode: nil
|
||||
// c-basic-offset: 4
|
||||
// buffer-file-coding-system: utf-8-unix
|
||||
// compile-command: "make -k -C ../.. 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
|
||||
// End:
|
||||
//
|
||||
6
src/comp/middle/resolve.rs
Normal file
6
src/comp/middle/resolve.rs
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
import front.ast;
|
||||
import driver.session;
|
||||
|
||||
fn resolve_crate(session.session sess, ast.crate crate) -> ast.crate {
|
||||
ret crate;
|
||||
}
|
||||
|
|
@ -834,7 +834,7 @@ fn trans_main_fn(@trans_ctxt cx, ValueRef llcrate) {
|
|||
|
||||
}
|
||||
|
||||
fn trans_crate(session.session sess, ast.crate crate) {
|
||||
fn trans_crate(session.session sess, @ast.crate crate) {
|
||||
auto llmod =
|
||||
llvm.LLVMModuleCreateWithNameInContext(_str.buf("rust_out"),
|
||||
llvm.LLVMGetGlobalContext());
|
||||
|
|
|
|||
|
|
@ -11,6 +11,8 @@ mod front {
|
|||
}
|
||||
|
||||
mod middle {
|
||||
mod fold;
|
||||
mod resolve;
|
||||
mod trans;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue