Add random tools

src/abstract_tree/function_call.rs

@@ -33,6 +33,8 @@ impl AbstractTree for FunctionCall {
                     "assert" => Tool::Assert,
                     "assert_equal" => Tool::AssertEqual,
                     "output" => Tool::Output,
+                    "random" => Tool::Random,
+                    "random_integer" => Tool::RandomInteger,
                     "read" => Tool::Read,
                     "help" => Tool::Help,
                     _ => panic!("Tool name not recognized."),

src/abstract_tree/tool.rs

@@ -1,5 +1,6 @@
 use std::fs::read_to_string;
 
+use rand::{random, thread_rng, Rng};
 use serde::{Deserialize, Serialize};
 
 use crate::{Error, Result, Table, Value};
@@ -9,8 +10,10 @@ pub enum Tool {
     Assert,
     AssertEqual,
     Output,
+    Random,
     Read,
     Help,
+    RandomInteger,
 }
 
 impl Tool {
@@ -62,6 +65,24 @@ impl Tool {
 
                 Value::Empty
             }
+            Tool::Random => todo!(),
+            Tool::RandomInteger => {
+                if values.len() == 0 {
+                    Value::Integer(random())
+                } else if values.len() == 2 {
+                    let range = values[0].as_int()?..values[1].as_int()?;
+                    let mut rng = thread_rng();
+                    let random = rng.gen_range(range);
+
+                    Value::Integer(random)
+                } else {
+                    return Err(Error::ExpectedToolArgumentAmount {
+                        tool_name: "random_integer",
+                        expected: 2,
+                        actual: values.len(),
+                    });
+                }
+            }
             Tool::Read => {
                 if values.len() != 1 {
                     return Err(Error::ExpectedToolArgumentAmount {

src/error.rs

@@ -1,7 +1,7 @@
 //! Error and Result types.
 //!
 //! To deal with errors from dependencies, either create a new error variant
-//! or use the MacroFailure variant if the error can only occur inside a macro.
+//! or use the ToolFailure variant if the error can only occur inside a tool.
 
 use crate::{value::Value, Identifier};
 

tree-sitter-dust

@@ -1 +1 @@
-Subproject commit 0b6c6b7e25e137c8d5ad09d19584d028a371fd16
+Subproject commit 7021c7f7894b54ddf8c46c91477613b3071819a4