Make sure we have at least one declaration in TUs

Author: kddnewton

include/prism/compiler/unused.h

@@ -10,9 +10,9 @@
  * compiler-agnostic way.
  */
 #if defined(__GNUC__)
-#   define PRISM_ATTRIBUTE_UNUSED __attribute__((unused))
+#   define PRISM_UNUSED __attribute__((unused))
 #else
-#   define PRISM_ATTRIBUTE_UNUSED
+#   define PRISM_UNUSED
 #endif
 
 #endif

src/encoding.c

@@ -4094,7 +4094,7 @@ pm_encoding_ascii_isupper_char(const uint8_t *b, ptrdiff_t n) {
  * matter what the codepoint, so this function is shared between them.
  */
 static size_t
-pm_encoding_single_char_width(PRISM_ATTRIBUTE_UNUSED const uint8_t *b, PRISM_ATTRIBUTE_UNUSED ptrdiff_t n) {
+pm_encoding_single_char_width(PRISM_UNUSED const uint8_t *b, PRISM_UNUSED ptrdiff_t n) {
     return 1;
 }
 

src/json.c

@@ -11,7 +11,14 @@
 /* We optionally support dumping to JSON. For systems that don not want or need
  * this functionality, it can be turned off with the PRISM_EXCLUDE_JSON define.
  */
-#ifndef PRISM_EXCLUDE_JSON
+#ifdef PRISM_EXCLUDE_JSON
+
+#include "prism/compiler/unused.h"
+
+void
+pm_dump_json(PRISM_UNUSED pm_buffer_t *buffer, PRISM_UNUSED const pm_parser_t *parser, PRISM_UNUSED const pm_node_t *node) {}
+
+#else
 
 #include "prism/internal/buffer.h"
 #include "prism/internal/constant_pool.h"

src/prism.c

@@ -454,7 +454,7 @@ lex_state_set(pm_parser_t *parser, pm_lex_state_t state) {
 #endif
 
 #if PM_DEBUG_LOGGING
-PRISM_ATTRIBUTE_UNUSED static void
+PRISM_UNUSED static void
 debug_state(pm_parser_t *parser) {
     fprintf(stderr, "STATE: ");
     bool first = true;
@@ -1073,7 +1073,7 @@ pm_locals_reads(pm_locals_t *locals, pm_constant_id_t name) {
  * written but not read in certain contexts.
  */
 static void
-pm_locals_order(PRISM_ATTRIBUTE_UNUSED pm_parser_t *parser, pm_locals_t *locals, pm_constant_id_list_t *list, bool toplevel) {
+pm_locals_order(pm_parser_t *parser, pm_locals_t *locals, pm_constant_id_list_t *list, bool toplevel) {
     pm_constant_id_list_init_capacity(parser->arena, list, locals->size);
 
     // If we're still below the threshold for switching to a hash, then we only

src/static_literals.c

@@ -285,7 +285,7 @@ pm_compare_integer_nodes(const pm_static_literals_metadata_t *metadata, const pm
  * A comparison function for comparing two FloatNode instances.
  */
 static int
-pm_compare_float_nodes(PRISM_ATTRIBUTE_UNUSED const pm_static_literals_metadata_t *metadata, const pm_node_t *left, const pm_node_t *right) {
+pm_compare_float_nodes(PRISM_UNUSED const pm_static_literals_metadata_t *metadata, const pm_node_t *left, const pm_node_t *right) {
     const double left_value = ((const pm_float_node_t *) left)->value;
     const double right_value = ((const pm_float_node_t *) right)->value;
     return PM_NUMERIC_COMPARISON(left_value, right_value);
@@ -344,7 +344,7 @@ pm_string_value(const pm_node_t *node) {
  * A comparison function for comparing two nodes that have attached strings.
  */
 static int
-pm_compare_string_nodes(PRISM_ATTRIBUTE_UNUSED const pm_static_literals_metadata_t *metadata, const pm_node_t *left, const pm_node_t *right) {
+pm_compare_string_nodes(PRISM_UNUSED const pm_static_literals_metadata_t *metadata, const pm_node_t *left, const pm_node_t *right) {
     const pm_string_t *left_string = pm_string_value(left);
     const pm_string_t *right_string = pm_string_value(right);
     return pm_string_compare(left_string, right_string);
@@ -354,7 +354,7 @@ pm_compare_string_nodes(PRISM_ATTRIBUTE_UNUSED const pm_static_literals_metadata
  * A comparison function for comparing two RegularExpressionNode instances.
  */
 static int
-pm_compare_regular_expression_nodes(PRISM_ATTRIBUTE_UNUSED const pm_static_literals_metadata_t *metadata, const pm_node_t *left, const pm_node_t *right) {
+pm_compare_regular_expression_nodes(PRISM_UNUSED const pm_static_literals_metadata_t *metadata, const pm_node_t *left, const pm_node_t *right) {
     const pm_regular_expression_node_t *left_regexp = (const pm_regular_expression_node_t *) left;
     const pm_regular_expression_node_t *right_regexp = (const pm_regular_expression_node_t *) right;
 

src/strpbrk.c

@@ -257,7 +257,7 @@ scan_strpbrk_ascii(pm_parser_t *parser, const uint8_t *source, size_t maximum, c
 #else
 
 static PRISM_INLINE bool
-scan_strpbrk_ascii(PRISM_ATTRIBUTE_UNUSED pm_parser_t *parser, PRISM_ATTRIBUTE_UNUSED const uint8_t *source, PRISM_ATTRIBUTE_UNUSED size_t maximum, PRISM_ATTRIBUTE_UNUSED const uint8_t *charset, size_t *index) {
+scan_strpbrk_ascii(PRISM_UNUSED pm_parser_t *parser, PRISM_UNUSED const uint8_t *source, PRISM_UNUSED size_t maximum, PRISM_UNUSED const uint8_t *charset, size_t *index) {
     *index = 0;
     return false;
 }

templates/src/prettyprint.c.erb

@@ -4,7 +4,14 @@
 /* We optionally support pretty printing nodes. For systems that don't want or
  * need this functionality, it can be turned off with the
  * PRISM_EXCLUDE_PRETTYPRINT define. */
-#ifndef PRISM_EXCLUDE_PRETTYPRINT
+#ifdef PRISM_EXCLUDE_PRETTYPRINT
+
+#include "prism/compiler/unused.h"
+
+void
+pm_prettyprint(PRISM_UNUSED pm_buffer_t *buffer, PRISM_UNUSED const pm_parser_t *parser, PRISM_UNUSED const pm_node_t *node) {}
+
+#else
 
 #include "prism/compiler/inline.h"
 #include "prism/internal/buffer.h"

templates/src/serialize.c.erb

@@ -3,7 +3,14 @@
 /* We optionally support serializing to a binary string. For systems that do not
  * want or need this functionality, it can be turned off with the
  * PRISM_EXCLUDE_SERIALIZATION define. */
-#ifndef PRISM_EXCLUDE_SERIALIZATION
+#ifdef PRISM_EXCLUDE_SERIALIZATION
+
+#include "prism/compiler/unused.h"
+
+void
+pm_serialize_lex(PRISM_UNUSED pm_buffer_t *buffer, PRISM_UNUSED const uint8_t *source, PRISM_UNUSED size_t size, PRISM_UNUSED const char *data) {}
+
+#else
 
 #include "prism/compiler/inline.h"