add file

squirrel-server/src/table/table_definition.rs

@@ -0,0 +1,31 @@
+use crate::Datatype;
+
+#[derive(Debug, Eq, PartialEq)]
+pub struct ColumnDefinition {
+    pub name: String,
+    pub data_type: Datatype,
+    pub length: usize, // used for char(n), varchar(n)
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub struct TableDefinition {
+    pub name: String,
+    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
+            };
+        }
+        sum
+    }
+}