fix #1352: change param order on vec::init_fn (and vec::init_fn_mut), putting block in final position.

Author: gmfawcett

src/comp/middle/typeck.rs

@@ -142,7 +142,7 @@ fn instantiate_path(fcx: @fn_ctxt, pth: @ast::path,
                     tpt: ty_param_bounds_and_ty, sp: span)
     -> ty_param_substs_opt_and_ty {
     let ty_param_count = vec::len(*tpt.bounds);
-    let vars = vec::init_fn({|_i| next_ty_var(fcx)}, ty_param_count);
+    let vars = vec::init_fn(ty_param_count, {|_i| next_ty_var(fcx)});
     let ty_substs_len = vec::len(pth.node.types);
     if ty_substs_len > 0u {
         let param_var_len = vec::len(vars);
@@ -611,9 +611,9 @@ fn compare_impl_method(tcx: ty::ctxt, sp: span, impl_m: ty::method,
     } else {
         let impl_fty = ty::mk_fn(tcx, impl_m.fty);
         // Add dummy substs for the parameters of the impl method
-        let substs = substs + vec::init_fn({|i|
+        let substs = substs + vec::init_fn(vec::len(*if_m.tps), {|i|
             ty::mk_param(tcx, i + impl_tps, {crate: 0, node: 0})
-        }, vec::len(*if_m.tps));
+        });
         let if_fty = ty::substitute_type_params(tcx, substs,
                                                 ty::mk_fn(tcx, if_m.fty));
         alt ty::unify::unify(impl_fty, if_fty, ty::unify::precise, tcx) {
@@ -2334,7 +2334,7 @@ fn next_ty_var(fcx: @fn_ctxt) -> ty::t {
 
 fn bind_params(fcx: @fn_ctxt, tp: ty::t, count: uint)
     -> {vars: [ty::t], ty: ty::t} {
-    let vars = vec::init_fn({|_i| next_ty_var(fcx)}, count);
+    let vars = vec::init_fn(count, {|_i| next_ty_var(fcx)});
     {vars: vars, ty: ty::substitute_type_params(fcx.ccx.tcx, vars, tp)}
 }
 

src/libcore/vec.rs

@@ -88,7 +88,7 @@ Creates and initializes an immutable vector.
 Creates an immutable vector of size `n_elts` and initializes the elements
 to the value returned by the function `op`.
 */
-fn init_fn<T>(op: init_op<T>, n_elts: uint) -> [T] {
+fn init_fn<T>(n_elts: uint, op: init_op<T>) -> [T] {
     let v = [];
     reserve(v, n_elts);
     let i: uint = 0u;
@@ -105,7 +105,7 @@ Creates and initializes a mutable vector.
 Creates a mutable vector of size `n_elts` and initializes the elements to
 the value returned by the function `op`.
 */
-fn init_fn_mut<T>(op: init_op<T>, n_elts: uint) -> [mutable T] {
+fn init_fn_mut<T>(n_elts: uint, op: init_op<T>) -> [mutable T] {
     let v = [mutable];
     reserve(v, n_elts);
     let i: uint = 0u;
@@ -365,13 +365,13 @@ Function: grow_fn
 Expands a vector in place, initializing the new elements to the result of a
 function
 
-Function `init_fn` is called `n` times with the values [0..`n`)
+Function `init_op` is called `n` times with the values [0..`n`)
 
 Parameters:
 
 v - The vector to grow
 n - The number of elements to add
-init_fn - A function to call to retreive each appended element's value
+init_op - A function to call to retreive each appended element's value
 */
 fn grow_fn<T>(&v: [T], n: uint, op: init_op<T>) {
     reserve(v, next_power_of_two(len(v) + n));
@@ -1026,14 +1026,14 @@ mod tests {
     #[test]
     fn test_init_fn() {
         // Test on-stack init_fn.
-        let v = init_fn(square, 3u);
+        let v = init_fn(3u, square);
         assert (len(v) == 3u);
         assert (v[0] == 0u);
         assert (v[1] == 1u);
         assert (v[2] == 4u);
 
         // Test on-heap init_fn.
-        v = init_fn(square, 5u);
+        v = init_fn(5u, square);
         assert (len(v) == 5u);
         assert (v[0] == 0u);
         assert (v[1] == 1u);

src/libstd/bitv.rs

@@ -267,7 +267,7 @@ in the resulting vector has either value 0u or 1u.
 */
 fn to_vec(v: t) -> [uint] {
     let sub = bind init_to_vec(v, _);
-    ret vec::init_fn::<uint>(sub, v.nbits);
+    ret vec::init_fn::<uint>(v.nbits, sub);
 }
 
 /*

src/libstd/getopts.rs

@@ -212,7 +212,7 @@ err(fail_) - On failure. Use <fail_str> to get an error message.
 fn getopts(args: [str], opts: [opt]) -> result {
     let n_opts = vec::len::<opt>(opts);
     fn f(_x: uint) -> [optval] { ret []; }
-    let vals = vec::init_fn_mut::<[optval]>(f, n_opts);
+    let vals = vec::init_fn_mut::<[optval]>(n_opts, f);
     let free: [str] = [];
     let l = vec::len(args);
     let i = 0u;

src/test/bench/shootout-fannkuchredux.rs

@@ -7,7 +7,7 @@ fn fannkuch(n: int) -> int {
     fn perm1init(i: uint) -> int { ret i as int; }
 
     let perm = vec::init_elt_mut(0, n as uint);
-    let perm1 = vec::init_fn_mut(perm1init, n as uint);
+    let perm1 = vec::init_fn_mut(n as uint, perm1init);
     let count = vec::init_elt_mut(0, n as uint);
     let f = 0;
     let i = 0;

src/test/bench/sudoku.rs

@@ -31,7 +31,7 @@ enum grid_t { grid_ctor(grid), }
 fn read_grid(f: io::reader) -> grid_t {
     assert f.read_line() == "9,9"; /* assert first line is exactly "9,9" */
 
-    let g = vec::init_fn({|_i| vec::init_elt_mut(0 as u8, 10u) }, 10u);
+    let g = vec::init_fn(10u, {|_i| vec::init_elt_mut(0 as u8, 10u) });
     while !f.eof() {
         // FIXME: replace with unicode compliant call
         let comps = str::split(str::trim(f.read_line()), ',' as u8);
@@ -130,7 +130,7 @@ fn write_grid(f: io::writer, g: grid_t) {
 fn main(args: [str]) {
     let grid = if vec::len(args) == 1u {
         // FIXME create sudoku inline since nested vec consts dont work yet
-        let g = vec::init_fn({|_i| vec::init_elt_mut(0 as u8, 10u) }, 10u);
+        let g = vec::init_fn(10u, {|_i| vec::init_elt_mut(0 as u8, 10u) });
         g[0][1] = 4u8;
         g[0][3] = 6u8;
         g[0][7] = 3u8;