Move DbResult into its own file

minisql/src/internals/schema.rs

@@ -1,5 +1,6 @@
 use std::collections::HashMap;
 use bimap::BiMap;
+use crate::result::DbResult;
 use crate::operation::{InsertionValues, ColumnSelection};
 use crate::internals::row::{Row, ColumnPosition};
 use crate::type_system::{DbType, Value, IndexableValue, UUID};
@@ -16,11 +17,8 @@ pub struct TableSchema {
 }
 
 pub type TableName = String;
-
 pub type ColumnName = String;
 
-pub type DbResult<A> = Result<A, Error>;
-
 impl TableSchema {
     fn get_column(&self, column_name: &ColumnName) -> DbResult<(DbType, ColumnPosition)> {
         match self.column_name_position_mapping.get_by_left(column_name) {

minisql/src/internals/table.rs

@@ -1,8 +1,9 @@
 use std::collections::{BTreeMap, HashMap, HashSet};
 
+use crate::result::DbResult;
 use crate::type_system::{UUID, Value, IndexableValue};
 use crate::error::Error;
-use crate::internals::schema::{TableSchema, ColumnName, DbResult};
+use crate::internals::schema::{TableSchema, ColumnName};
 use crate::internals::row::{Row, ColumnPosition};
 use crate::internals::column_index::ColumnIndex;
 

minisql/src/interpreter.rs

@@ -1,6 +1,7 @@
 use bimap::BiMap;
+use crate::result::DbResult;
 use crate::type_system::{Value, DbType, IndexableValue};
-use crate::internals::schema::{TableName, TableSchema, ColumnName, DbResult};
+use crate::internals::schema::{TableName, TableSchema, ColumnName};
 use crate::internals::table::Table;
 use crate::internals::row::{Row, ColumnPosition};
 use crate::error::Error;

minisql/src/main.rs

@@ -1,3 +1,4 @@
+mod result;
 mod internals;
 mod operation;
 mod interpreter;

minisql/src/result.rs

@@ -0,0 +1,3 @@
+use crate::error::Error;
+
+pub type DbResult<A> = Result<A, Error>;