breaking API changes to all readInt/writeInt functions & more

 * add `@bswap` builtin function. See #767
 * comptime evaluation facilities are improved to be able to
   handle a `@ptrCast` with a backing array.
 * `@truncate` allows "truncating" a u0 value to any integer
   type, and the result is always comptime known to be `0`.
 * when specifying pointer alignment in a type expression,
   the alignment value of pointers which do not have addresses
   at runtime is ignored, and always has the default/ABI alignment
 * threw in a fix to freebsd/x86_64.zig to update syntax from
   language changes
 * some improvements are pending #863

closes #638
closes #1733

std lib API changes
 * io.InStream().readIntNe renamed to readIntNative
 * io.InStream().readIntLe renamed to readIntLittle
 * io.InStream().readIntBe renamed to readIntBig
 * introduced io.InStream().readIntForeign
 * io.InStream().readInt has parameter order changed
 * io.InStream().readVarInt has parameter order changed
 * io.InStream().writeIntNe renamed to writeIntNative
 * introduced io.InStream().writeIntForeign
 * io.InStream().writeIntLe renamed to writeIntLittle
 * io.InStream().writeIntBe renamed to writeIntBig
 * io.InStream().writeInt has parameter order changed
 * mem.readInt has different parameters and semantics
 * introduced mem.readIntNative
 * introduced mem.readIntForeign
 * mem.readIntBE renamed to mem.readIntBig and different API
 * mem.readIntLE renamed to mem.readIntLittle and different API
 * introduced mem.readIntSliceNative
 * introduced mem.readIntSliceForeign
 * introduced mem.readIntSliceLittle
 * introduced mem.readIntSliceBig
 * introduced mem.readIntSlice
 * mem.writeInt has different parameters and semantics
 * introduced mem.writeIntNative
 * introduced mem.writeIntForeign
 * mem.writeIntBE renamed to mem.readIntBig and different semantics
 * mem.writeIntLE renamed to mem.readIntLittle and different semantics
 * introduced mem.writeIntSliceForeign
 * introduced mem.writeIntSliceNative
 * introduced mem.writeIntSliceBig
 * introduced mem.writeIntSliceLittle
 * introduced mem.writeIntSlice
 * removed mem.endianSwapIfLe
 * removed mem.endianSwapIfBe
 * removed mem.endianSwapIf
 * added mem.littleToNative
 * added mem.bigToNative
 * added mem.toNative
 * added mem.nativeTo
 * added mem.nativeToLittle
 * added mem.nativeToBig

1 files changed, 22 insertions, 22 deletions

diff --git a/std/coff.zig b/std/coff.zig
index 6a1aa34b46..53bd2a4b7a 100644
--- a/std/coff.zig
+++ b/std/coff.zig
@@ -51,7 +51,7 @@ pub const Coff = struct {
 
         // Seek to PE File Header (coff header)
         try self.in_file.seekTo(pe_pointer_offset);
-        const pe_magic_offset = try in.readIntLe(u32);
+        const pe_magic_offset = try in.readIntLittle(u32);
         try self.in_file.seekTo(pe_magic_offset);
 
         var pe_header_magic: [4]u8 = undefined;
@@ -60,13 +60,13 @@ pub const Coff = struct {
             return error.InvalidPEHeader;
 
         self.coff_header = CoffHeader{
-            .machine = try in.readIntLe(u16),
-            .number_of_sections = try in.readIntLe(u16),
-            .timedate_stamp = try in.readIntLe(u32),
-            .pointer_to_symbol_table = try in.readIntLe(u32),
-            .number_of_symbols = try in.readIntLe(u32),
-            .size_of_optional_header = try in.readIntLe(u16),
-            .characteristics = try in.readIntLe(u16),
+            .machine = try in.readIntLittle(u16),
+            .number_of_sections = try in.readIntLittle(u16),
+            .timedate_stamp = try in.readIntLittle(u32),
+            .pointer_to_symbol_table = try in.readIntLittle(u32),
+            .number_of_symbols = try in.readIntLittle(u32),
+            .size_of_optional_header = try in.readIntLittle(u16),
+            .characteristics = try in.readIntLittle(u16),
         };
 
         switch (self.coff_header.machine) {
@@ -79,7 +79,7 @@ pub const Coff = struct {
 
     fn loadOptionalHeader(self: *Coff, file_stream: *os.File.InStream) !void {
         const in = &file_stream.stream;
-        self.pe_header.magic = try in.readIntLe(u16);
+        self.pe_header.magic = try in.readIntLittle(u16);
         // For now we're only interested in finding the reference to the .pdb,
         // so we'll skip most of this header, which size is different in 32
         // 64 bits by the way.
@@ -93,14 +93,14 @@ pub const Coff = struct {
 
         try self.in_file.seekForward(skip_size);
 
-        const number_of_rva_and_sizes = try in.readIntLe(u32);
+        const number_of_rva_and_sizes = try in.readIntLittle(u32);
         if (number_of_rva_and_sizes != IMAGE_NUMBEROF_DIRECTORY_ENTRIES)
             return error.InvalidPEHeader;
 
         for (self.pe_header.data_directory) |*data_dir| {
             data_dir.* = OptionalHeader.DataDirectory{
-                .virtual_address = try in.readIntLe(u32),
-                .size = try in.readIntLe(u32),
+                .virtual_address = try in.readIntLittle(u32),
+                .size = try in.readIntLittle(u32),
             };
         }
     }
@@ -124,7 +124,7 @@ pub const Coff = struct {
         if (!mem.eql(u8, cv_signature, "RSDS"))
             return error.InvalidPEMagic;
         try in.readNoEof(self.guid[0..]);
-        self.age = try in.readIntLe(u32);
+        self.age = try in.readIntLittle(u32);
 
         // Finally read the null-terminated string.
         var byte = try in.readByte();
@@ -157,15 +157,15 @@ pub const Coff = struct {
             try self.sections.append(Section{
                 .header = SectionHeader{
                     .name = name,
-                    .misc = SectionHeader.Misc{ .physical_address = try in.readIntLe(u32) },
-                    .virtual_address = try in.readIntLe(u32),
-                    .size_of_raw_data = try in.readIntLe(u32),
-                    .pointer_to_raw_data = try in.readIntLe(u32),
-                    .pointer_to_relocations = try in.readIntLe(u32),
-                    .pointer_to_line_numbers = try in.readIntLe(u32),
-                    .number_of_relocations = try in.readIntLe(u16),
-                    .number_of_line_numbers = try in.readIntLe(u16),
-                    .characteristics = try in.readIntLe(u32),
+                    .misc = SectionHeader.Misc{ .physical_address = try in.readIntLittle(u32) },
+                    .virtual_address = try in.readIntLittle(u32),
+                    .size_of_raw_data = try in.readIntLittle(u32),
+                    .pointer_to_raw_data = try in.readIntLittle(u32),
+                    .pointer_to_relocations = try in.readIntLittle(u32),
+                    .pointer_to_line_numbers = try in.readIntLittle(u32),
+                    .number_of_relocations = try in.readIntLittle(u16),
+                    .number_of_line_numbers = try in.readIntLittle(u16),
+                    .characteristics = try in.readIntLittle(u32),
                 },
             });
         }