Implement workdir tool

src/abstract_tree/tool.rs

@@ -1,4 +1,5 @@
 use std::{
+    env::current_dir,
     fs::{copy, metadata, read_dir, read_to_string, remove_file, write, File},
     io::Write,
     path::PathBuf,
@@ -21,6 +22,7 @@ pub enum Tool {
     Output(Vec<Expression>),
     OutputError(Vec<Expression>),
     Type(Expression),
+    Workdir,
 
     // Filesystem
     Append(Vec<Expression>),
@@ -117,6 +119,7 @@ impl AbstractTree for Tool {
 
                 Tool::Type(expression)
             }
+            "workdir" => Tool::Workdir,
             "append" => {
                 let expressions = parse_expressions(source, node)?;
 
@@ -314,6 +317,11 @@ impl AbstractTree for Tool {
 
                 Ok(Value::String(value_type.to_string()))
             }
+            Tool::Workdir => {
+                let workdir = current_dir()?.to_string_lossy().to_string();
+
+                Ok(Value::String(workdir))
+            }
             Tool::Append(expressions) => {
                 let path_value = expressions[0].run(source, context)?;
                 let path = path_value.as_string()?;

tree-sitter-dust/grammar.js

@@ -267,6 +267,7 @@ module.exports = grammar({
       'output',
       'output_error',
       'type',
+      'workdir',
 
       // Filesystem
       'append',

tree-sitter-dust/src/grammar.json

@@ -1094,6 +1094,10 @@
           "type": "STRING",
           "value": "type"
         },
+        {
+          "type": "STRING",
+          "value": "workdir"
+        },
         {
           "type": "STRING",
           "value": "append"
@@ -1168,11 +1172,11 @@
         },
         {
           "type": "STRING",
-          "value": "rows"
+          "value": "columns"
         },
         {
           "type": "STRING",
-          "value": "columns"
+          "value": "rows"
         }
       ]
     }

tree-sitter-dust/src/node-types.json

@@ -897,6 +897,10 @@
     "type": "while",
     "named": false
   },
+  {
+    "type": "workdir",
+    "named": false
+  },
   {
     "type": "write",
     "named": false