Prepare third compiler implementation

1 files changed, 25 insertions, 0 deletions

diff --git a/src/string_view.h b/src/string_view.h
new file mode 100755
index 0000000..4dbbaaf
--- /dev/null
+++ b/src/string_view.h
@@ -0,0 +1,25 @@
+#ifndef BDL_STRINGVIEW_H
+#define BDL_STRINGVIEW_H
+
+#include "common.h"
+
+typedef struct StringView {
+    char *start;
+    size_t n;
+} StringView;
+
+// Consume a character in the stream.
+char sv_next(StringView *sv);
+
+// Check what is the current character in the stream.
+char sv_peek(const StringView *sv);
+
+// Compare if the arguments are the same.
+bool sv_equal(const StringView *a, const StringView *b);
+
+// Write a character to the given output stream.
+void sv_write(const StringView *sv);
+
+#define STRING(STR) (StringView){(STR), sizeof(STR) - 1}
+
+#endif // BDL_STRINGVIEW_H