fix ups + rewrite parser

squirrel-server/src/table/table.rs

@@ -1,12 +1,31 @@
 use crate::Datatype;
 
-pub struct Column {
+#[derive(Debug, Eq, PartialEq)]
+pub struct ColumnDefinition {
     pub name: String,
     pub data_type: Datatype,
-    pub length: u16 // used for char(n), varchar(n)
+    pub length: usize, // used for char(n), varchar(n)
 }
 
+#[derive(Debug, Eq, PartialEq)]
 pub struct TableDefinition {
     pub name: String,
-    pub column_defs: Vec<Column>,
-}
+    pub column_defs: Vec<ColumnDefinition>,
+}
+
+impl TableDefinition {
+    pub fn get_byte_size(&self) -> usize {
+        let mut sum: usize = 0;
+        for col_def in self.column_defs.iter() {
+            // TODO HACK FIXME
+            // We should keep track of length
+            // even for built-in datatypes.
+            sum += if col_def.length > 0 {
+                col_def.length
+            } else {
+                1
+            };
+        }
+        return sum;
+    }
+}