Expose properties for types

[davispuh]

Expose properties for types. They're not used by ffi_generator but other projects can use this library.
For example, I created CStructParser which uses ffi_generator to convert C structs into BinData records.

This allows to do this:

require 'cstruct_parser'
require 'bindata'

sourceCode = %{
  #include <stdint.h>

  #define EI_NIDENT (16)

  typedef uint64_t Elf64_Addr;
  typedef uint16_t Elf64_Half;
  typedef uint32_t Elf64_Word;

  typedef struct
  {
    unsigned char e_ident[EI_NIDENT];
    Elf64_Half e_type;
    Elf64_Half e_machine;
    Elf64_Word e_version;
    Elf64_Addr e_entry;
  } Elf64_Ehdr;
}

records = CStructParser.to_bindata(sourceCode)
# class Elf64Ehdr < BinData::Record
#  endian :little
#  array :e_ident, type: :uint8, initial_length: 16
#  uint16 :e_type
#  uint16 :e_machine
#  uint32 :e_version
#  uint64 :e_entry
#end
eval(records)
Elf64Ehdr.read(File.open('/bin/ruby'))
# => {e_ident: [127, 69, 76, 70, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0], e_type: 3, e_machine: 62, e_version: 1, e_entry: 4272}

[Copilot]

Pull request overview

This PR exposes internal properties of type classes to enable external projects to introspect and use ffi_generator's type information. The changes support use cases like CStructParser, which converts C structs into BinData records by accessing these previously private properties.

Changes:

• Added attr_reader declarations to expose internal properties across multiple type classes
• Added struct? and union? helper methods to distinguish between struct and union types

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
lib/ffi_generator/generators/from_c_generator/struct_or_union.rb	Added struct? and union? methods for type identification
lib/ffi_generator/generators/from_c_generator/primitive_type.rb	Exposed clang_type property via attr_reader
lib/ffi_generator/generators/from_c_generator/by_value_type.rb	Exposed inner_type property via attr_reader
lib/ffi_generator/generators/from_c_generator/array_type.rb	Exposed element_type and constant_size properties via attr_reader

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