1 files changed, 72 insertions, 2 deletions

diff --git a/source/lexer/lexer.c b/source/lexer/lexer.c
index 8182c5a..1c7ab38 100644
--- a/source/lexer/lexer.c
+++ b/source/lexer/lexer.c
@@ -1,10 +1,80 @@
+internal b32
+is_alpha(u8 point)
+{
+  return ((point >= 'a' && point <= 'z') ||
+          (point >= 'A' && point <= 'Z') ||
+          (point == '_'));
+}
+
+internal b32
+is_digit(u8 point)
+{
+  return (point >= '0' && point <= '9');
+}
+
+internal b32
+is_alpha_num(u8 point)
+{
+  return (is_alpha(point) || is_digit(point));
+}
+
+internal b32
+is_whitespace(u8 point)
+{
+  return (point == '\n' || point == '\r' ||
+          point == ' ' || point == '\t');
+}
+
+internal b32
+is_delimiter(u8 point)
+{
+
+    return (point == ',');
+
+}
+
 internal token *
 tokenize_csv(string8 buffer)
 {
+    i32 count = 0;
+    string8 **tokens = PushArray(arena, string8 *, buffer.size / 10);
+
     if(buffer.size < 0) return NULL;
     for(i32 index = 0;
-         buffer.data[index] != '\0'
-         ;)
+         buffer.data[index] != '\0';
+         ++index)
+    {
+        string8 tokens = {0};
+
+        u8 point = buffer.data[index];
+        if(is_whitespace(point)) continue;
+
+        u8 *start = &buffer.data;
+
+        if(is_delimiter(point))
+        {
+
+
+        }
+
+        u8 *end = start - 1;
+
+        unused(start);
+        unused(end);
+
+        switch (point)
+        {
+
+            default:
+                {
+                    printf("point: %c\n", point);
+                    count++;
+                }
+        }
+
+    }
+
+    printf("%d", count);
 
     return NULL;
 }