core: Factor out int/i8/16/32/64 mods into int-template

Author: brson

src/libcore/core.rc

@@ -44,16 +44,48 @@ export priv;
 
 // Built-in-type support modules
 
+#[doc = "Operations and constants for `int`"]
+#[path = "int-template"]
+mod int {
+    import inst::{ hash, parse_buf, from_str, to_str, str, pow };
+    export hash, parse_buf, from_str, to_str, str, pow;
+    #[path = "int.rs"]
+    mod inst;
+}
+
+#[doc = "Operations and constants for `i8`"]
+#[path = "int-template"]
+mod i8 {
+    #[path = "i8.rs"]
+    mod inst;
+}
+
+#[doc = "Operations and constants for `i16`"]
+#[path = "int-template"]
+mod i16 {
+    #[path = "i16.rs"]
+    mod inst;
+}
+
+#[doc = "Operations and constants for `i32`"]
+#[path = "int-template"]
+mod i32 {
+    #[path = "i32.rs"]
+    mod inst;
+}
+
+#[doc = "Operations and constants for `i64`"]
+#[path = "int-template"]
+mod i64 {
+    #[path = "i64.rs"]
+    mod inst;
+}
+
 mod box;
 mod char;
 mod float;
 mod f32;
 mod f64;
-mod int;
-mod i8;
-mod i16;
-mod i32;
-mod i64;
 mod str;
 mod ptr;
 mod uint;

src/libcore/i16.rs

@@ -0,0 +1,51 @@
+import T = inst::T;
+
+export min_value, max_value;
+export min, max;
+export add, sub, mul, div, rem;
+export lt, le, eq, ne, ge, gt;
+export is_positive, is_negative;
+export is_nonpositive, is_nonnegative;
+export range;
+export compl;
+export abs;
+
+const min_value: T = -1 as T << (inst::bits - 1 as T);
+const max_value: T = min_value - 1 as T;
+
+pure fn min(x: T, y: T) -> T { if x < y { x } else { y } }
+pure fn max(x: T, y: T) -> T { if x > y { x } else { y } }
+
+pure fn add(x: T, y: T) -> T { x + y }
+pure fn sub(x: T, y: T) -> T { x - y }
+pure fn mul(x: T, y: T) -> T { x * y }
+pure fn div(x: T, y: T) -> T { x / y }
+pure fn rem(x: T, y: T) -> T { x % y }
+
+pure fn lt(x: T, y: T) -> bool { x < y }
+pure fn le(x: T, y: T) -> bool { x <= y }
+pure fn eq(x: T, y: T) -> bool { x == y }
+pure fn ne(x: T, y: T) -> bool { x != y }
+pure fn ge(x: T, y: T) -> bool { x >= y }
+pure fn gt(x: T, y: T) -> bool { x > y }
+
+pure fn is_positive(x: T) -> bool { x > 0 as T }
+pure fn is_negative(x: T) -> bool { x < 0 as T }
+pure fn is_nonpositive(x: T) -> bool { x <= 0 as T }
+pure fn is_nonnegative(x: T) -> bool { x >= 0 as T }
+
+#[doc = "Iterate over the range [`lo`..`hi`)"]
+fn range(lo: T, hi: T, it: fn(T)) {
+    let mut i = lo;
+    while i < hi { it(i); i += 1 as T; }
+}
+
+#[doc = "Computes the bitwise complement"]
+pure fn compl(i: T) -> T {
+    -1 as T ^ i
+}
+
+#[doc = "Computes the absolute value"]
+pure fn abs(i: T) -> T {
+    if is_negative(i) { -i } else { i }
+}

src/libcore/i32.rs

@@ -0,0 +1,3 @@
+type T = i16;
+
+const bits: T = 16 as T;

src/libcore/i64.rs

@@ -0,0 +1,3 @@
+type T = i32;
+
+const bits: T = 32 as T;

src/libcore/i8.rs

@@ -0,0 +1,3 @@
+type T = i64;
+
+const bits: T = 64 as T;

src/libcore/int-template.rs

@@ -0,0 +1,3 @@
+type T = i8;
+
+const bits: T = 8 as T;

src/libcore/int-template/i16.rs

@@ -1,49 +1,14 @@
-#[doc = "Operations and constants for `int`"];
+type T = int;
 
-#[cfg(target_arch="x86")]
-const min_value: int = -1 << 31;
+#[cfg(target_arch = "x86")]
+const bits: T = 32 as T;
 
-#[cfg(target_arch="x86_64")]
-const min_value: int = -1 << 63;
-
-// FIXME: Find another way to access the machine word size in a const expr
-// (See Issue #2001)
-#[cfg(target_arch="x86")]
-const max_value: int = (-1 << 31)-1;
-
-#[cfg(target_arch="x86_64")]
-const max_value: int = (-1 << 63)-1;
-
-pure fn min(x: int, y: int) -> int { if x < y { x } else { y } }
-pure fn max(x: int, y: int) -> int { if x > y { x } else { y } }
-
-pure fn add(x: int, y: int) -> int { ret x + y; }
-pure fn sub(x: int, y: int) -> int { ret x - y; }
-pure fn mul(x: int, y: int) -> int { ret x * y; }
-pure fn div(x: int, y: int) -> int { ret x / y; }
-pure fn rem(x: int, y: int) -> int { ret x % y; }
-
-pure fn lt(x: int, y: int) -> bool { ret x < y; }
-pure fn le(x: int, y: int) -> bool { ret x <= y; }
-pure fn eq(x: int, y: int) -> bool { ret x == y; }
-pure fn ne(x: int, y: int) -> bool { ret x != y; }
-pure fn ge(x: int, y: int) -> bool { ret x >= y; }
-pure fn gt(x: int, y: int) -> bool { ret x > y; }
-
-pure fn is_positive(x: int) -> bool { ret x > 0; }
-pure fn is_negative(x: int) -> bool { ret x < 0; }
-pure fn is_nonpositive(x: int) -> bool { ret x <= 0; }
-pure fn is_nonnegative(x: int) -> bool { ret x >= 0; }
+#[cfg(target_arch = "x86_64")]
+const bits: T = 64 as T;
 
 #[doc = "Produce a uint suitable for use in a hash table"]
 pure fn hash(x: int) -> uint { ret x as uint; }
 
-#[doc = "Iterate over the range `[lo..hi)`"]
-fn range(lo: int, hi: int, it: fn(int)) {
-    let mut i = lo;
-    while i < hi { it(i); i += 1; }
-}
-
 #[doc = "
 Parse a buffer of bytes
 
@@ -105,15 +70,6 @@ fn pow(base: int, exponent: uint) -> int {
     ret acc;
 }
 
-#[doc = "Computes the bitwise complement"]
-pure fn compl(i: int) -> int {
-    uint::compl(i as uint) as int
-}
-
-#[doc = "Computes the absolute value"]
-fn abs(i: int) -> int {
-    if is_negative(i) { -i } else { i }
-}
 
 #[test]
 fn test_from_str() {
@@ -186,11 +142,3 @@ fn test_overflows() {
    assert (min_value <= 0);
    assert (min_value + max_value + 1 == 0);
 }
-
-// Local Variables:
-// mode: rust;
-// fill-column: 78;
-// indent-tabs-mode: nil
-// c-basic-offset: 4
-// buffer-file-coding-system: utf-8-unix
-// End: