Rename module; Implement collection commands

src/commands/collections.rs

@@ -59,7 +59,7 @@ impl Macro for String {
             identifier: "string",
             description: "Stringify a value.",
             group: "collections",
-            inputs: vec![],
+            inputs: vec![ValueType::Any],
         }
     }
 
@@ -89,13 +89,13 @@ impl Macro for Count {
             identifier: "count",
             description: "Return the number of items in a value.",
             group: "collections",
-            inputs: vec![],
+            inputs: vec![ValueType::Any],
         }
     }
 
     fn run(&self, argument: &Value) -> Result<Value> {
         let len = match argument {
-            Value::String(string) => string.len(),
+            Value::String(string) => string.chars().count(),
             Value::List(list) => list.len(),
             Value::Map(map) => map.len(),
             Value::Table(table) => table.len(),
@@ -119,7 +119,7 @@ impl Macro for CreateTable {
             identifier: "create_table",
             description: "Define a new table with a list of column names and list of rows.",
             group: "collections",
-            inputs: vec![],
+            inputs: vec![ValueType::ListOf(vec![ValueType::List, ValueType::List])],
         }
     }
 
@@ -155,7 +155,7 @@ impl Macro for Rows {
             identifier: "rows",
             description: "Extract a table's rows as a list.",
             group: "collections",
-            inputs: vec![],
+            inputs: vec![ValueType::Table],
         }
     }
 
@@ -213,13 +213,13 @@ impl Macro for Insert {
             identifier: "insert",
             description: "Add new rows to a table.",
             group: "collections",
-            inputs: vec![],
+            inputs: vec![ValueType::Table, ValueType::List],
         }
     }
 
     fn run(&self, argument: &Value) -> Result<Value> {
         let argument = argument.as_list()?;
-        let new_rows = &argument[1..];
+        let new_rows = argument[1].as_list()?;
         let mut table = argument[0].as_table()?.clone();
 
         table.reserve(new_rows.len());
@@ -242,7 +242,7 @@ impl Macro for Select {
             identifier: "select",
             description: "Extract one or more values based on their key.",
             group: "collections",
-            inputs: vec![],
+            inputs: vec![ValueType::Table, ValueType::String],
         }
     }
 

src/commands/mod.rs

@@ -1,13 +1,10 @@
-//! This module contains whale's built-in macro system. Every macro is listed
+//! This module contains dust's built-in commands.
-//! alphabetically. Use [call_macro] to check an identifier against every macro.
 //!
 //! ## Writing macros
 //!
 //! - snake case identifier, this is enforced by a test
-//! - the type name should be the identifier in upper camel case
-//! - always verify user input, this creates helpful errors
 //! - the description should be brief, it will display in the shell
-//! - maintain alphabetical order
+//!
 //!
 //! ## Usage
 //!

src/lib.rs

@@ -2,9 +2,9 @@
 #![forbid(unsafe_code)]
 
 pub use crate::{
+    commands::*,
     error::*,
     interface::*,
-    macros::*,
     operator::Operator,
     token::PartialToken,
     tree::Node,
@@ -14,9 +14,9 @@ pub use crate::{
     },
 };
 
+mod commands;
 mod error;
 mod interface;
-mod macros;
 mod operator;
 mod token;
 mod tree;

tests/table.ds

@@ -16,7 +16,7 @@ test_table = create_table (
 	)
 );
 
-assert_equal(table:select("text", "bool"), test_table);
+assert_equal(select(table, "text", "bool"), test_table);
 
 test_table = create_table(
 	("text", "number", "bool"),
@@ -26,4 +26,4 @@ test_table = create_table (
 	)
 );
 
-assert_equal(table:where('text == "a"'), test_table);
+assert_equal(where(table, 'text == "a"'), test_table);