FFI support

Gemfile

@@ -10,7 +10,7 @@ gem "test-unit"
 gem "rspec"
 gem "rubocop"
 gem "rubocop-rubycw"
-gem "rubocop-on-rbs"
+gem "rubocop-on-rbs", platform: :ruby # zlib transitive dep
 gem "json"
 gem "json-schema"
 gem "goodcheck"
@@ -28,15 +28,15 @@ group :libs do
   gem "abbrev"
   gem "base64"
   gem "bigdecimal"
-  gem "dbm"
+  gem "dbm", platform: :ruby
   gem "mutex_m"
   gem "nkf"
 end
 
 group :profilers do
   # Performance profiling and benchmarking
-  gem 'stackprof'
-  gem 'memory_profiler'
+  gem 'stackprof', platform: :ruby
+  gem 'memory_profiler', platform: :ruby
   gem 'benchmark-ips'
   gem "ruby_memcheck", platform: :ruby
 end

include/rbs/defines.h

@@ -83,4 +83,19 @@
 #define RBS_ATTRIBUTE_UNUSED
 #endif
 
+/***********************************************************************************************************************
+ * Exported functions from dynamic lib                                                                                 *
+ **********************************************************************************************************************/
+#ifndef RBS_EXPORTED_FUNCTION
+#   ifdef RBS_EXPORT_SYMBOLS
+#       ifdef _WIN32
+#          define RBS_EXPORTED_FUNCTION __declspec(dllexport) extern
+#       else
+#          define RBS_EXPORTED_FUNCTION __attribute__((__visibility__("default"))) extern
+#       endif
+#   else
+#       define RBS_EXPORTED_FUNCTION
+#   endif
+#endif
+
 #endif

include/rbs/parser.h

@@ -99,7 +99,9 @@ rbs_lexer_t *rbs_lexer_new(rbs_allocator_t *, rbs_string_t string, const rbs_enc
  * rbs_parser_new(buffer, string, encoding, 0, 1);
  * ```
  * */
+RBS_EXPORTED_FUNCTION
 rbs_parser_t *rbs_parser_new(rbs_string_t string, const rbs_encoding_t *encoding, int start_pos, int end_pos);
+RBS_EXPORTED_FUNCTION
 void rbs_parser_free(rbs_parser_t *parser);
 
 /**
@@ -126,8 +128,10 @@ rbs_ast_comment_t *rbs_parser_get_comment(rbs_parser_t *parser, int subject_line
 
 void rbs_parser_set_error(rbs_parser_t *parser, rbs_token_t tok, bool syntax_error, const char *fmt, ...) RBS_ATTRIBUTE_FORMAT(4, 5);
 
+RBS_EXPORTED_FUNCTION
 bool rbs_parse_type(rbs_parser_t *parser, rbs_node_t **type, bool void_allowed, bool self_allowed, bool classish_allowed);
 bool rbs_parse_method_type(rbs_parser_t *parser, rbs_method_type_t **method_type, bool require_eof, bool classish_allowed);
+RBS_EXPORTED_FUNCTION
 bool rbs_parse_signature(rbs_parser_t *parser, rbs_signature_t **signature);
 
 bool rbs_parse_type_params(rbs_parser_t *parser, bool module_type_params, rbs_node_list_t **params);

include/rbs/util/rbs_constant_pool.h

@@ -82,6 +82,7 @@ typedef struct {
 } rbs_constant_pool_t;
 
 // A global constant pool for storing permenant keywords, such as the names of location children in `parser.c`.
+RBS_EXPORTED_FUNCTION
 extern rbs_constant_pool_t *RBS_GLOBAL_CONSTANT_POOL;
 
 /**
@@ -91,6 +92,7 @@ extern rbs_constant_pool_t *RBS_GLOBAL_CONSTANT_POOL;
  * @param capacity The initial capacity of the pool.
  * @return Whether the initialization succeeded.
  */
+RBS_EXPORTED_FUNCTION
 bool rbs_constant_pool_init(rbs_constant_pool_t *pool, uint32_t capacity);
 
 /**

include/rbs/util/rbs_encoding.h

@@ -277,6 +277,7 @@ extern const rbs_encoding_t rbs_encodings[RBS_ENCODING_MAXIMUM];
  * @param end A pointer to the last byte of the name.
  * @returns A pointer to the encoding struct if one is found, otherwise NULL.
  */
+RBS_EXPORTED_FUNCTION
 const rbs_encoding_t *rbs_encoding_find(const uint8_t *start, const uint8_t *end);
 
 #endif

lib/rbs.rb

@@ -69,7 +69,12 @@
 require "rbs/type_alias_regularity"
 require "rbs/collection"
 
-require "rbs_extension"
+begin
+  require "rbs_extension"
+rescue LoadError
+  require "rbs/ffi/parser"
+  require "rbs/ffi/location"
+end
 require "rbs/parser_aux"
 require "rbs/location_aux"
 

lib/rbs/ffi/location.rb

@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+module RBS
+  class Location
+    def initialize(buffer, start_pos, end_pos)
+
+    end
+
+    def initialize_copy(other)
+
+    end
+
+    def buffer
+
+    end
+
+    def _start_pos
+
+    end
+
+    def _end_pos
+
+    end
+
+    def _add_required_child(name, start, end_pos)
+
+    end
+
+    def _add_optional_child(name, start, end_pos)
+
+    end
+
+    def _add_optional_no_child(name)
+
+    end
+
+    def _optional_keys
+
+    end
+
+    def _required_keys
+
+    end
+
+    def [](name)
+
+    end
+  end
+end