dev-2021-07

New Language Features

• Swizzling syntax for arrays len <= 4 (GLSL-like behaviour)
  • e.g. v.xyz, v.zyx, v.xxx
  • e.g. v.rgb, v.bgr, v.rrr
• Optional Ok Pointer addressing mode:
  • ptr, ok := &m[v];
  • ptr, ok := &v.(T);
• Disallow defers in a scope which terminates with a diverging procedure -> !
• Compound literals for struct #raw_union types
• Allow alternative syntax for offset_of:
  • offset_of(Struct_Type, field) (current syntax)
  • offset_of(value.field) (new alternative syntax)

Compiler Improvements

• Performance optimizations for switch statements (normal and type)
• Performance optimizations for array programming

Packages

• Remove context.thread_id
• Improve documentation for the Odin binary doc-format spec
• Improvements to reflect
• Add intrinsics.type_is_endian_platform
• Add bufio.Scanner
• Add bufio.Lookahead_Reader
• Many improvements to png
• Many improvements to gzip
• Many improvements to zlib
• Huge performance improvements to hashing procedures:
  • hash.crc32
  • hash.adler32

Bug Fixes

• Fix filepath bug leak
• Improve linalg.transpose return type behaviour
• Fix 128-bit integer to float cast by explicitly calling the procedure (was an LLVM bug)
• Fix -lld on Windows
• FIx double evaluation buf with selector call expressions x->y(z)->w(a)
• Fix semicolon insertion rule for ---