1 files changed, 30 insertions, 0 deletions
diff --git a/prism/internal/stringy.h b/prism/internal/stringy.h
new file mode 100644
index 0000000000..1aaa23ea75
--- /dev/null
+++ b/prism/internal/stringy.h
@@ -0,0 +1,30 @@
+#ifndef PRISM_INTERNAL_STRINGY_H
+#define PRISM_INTERNAL_STRINGY_H
+
+#include "prism/stringy.h"
+
+/*
+ * Defines an empty string. This is useful for initializing a string that will
+ * be filled in later.
+ */
+#define PM_STRING_EMPTY ((pm_string_t) { .type = PM_STRING_CONSTANT, .source = NULL, .length = 0 })
+
+/*
+ * Initialize a shared string that is based on initial input.
+ */
+void pm_string_shared_init(pm_string_t *string, const uint8_t *start, const uint8_t *end);
+
+/*
+ * Compare the underlying lengths and bytes of two strings. Returns 0 if the
+ * strings are equal, a negative number if the left string is less than the
+ * right string, and a positive number if the left string is greater than the
+ * right string.
+ */
+int pm_string_compare(const pm_string_t *left, const pm_string_t *right);
+
+/*
+ * Free the associated memory of the given string.
+ */
+void pm_string_cleanup(pm_string_t *string);
+
+#endif