Merge branch 'main' of https://github.com/nushell/engine-q into parse-error

crates/nu-protocol/src/ast/expr.rs

@@ -15,6 +15,7 @@ pub enum Expr {
     Call(Box<Call>),
     ExternalCall(Vec<u8>, Vec<Vec<u8>>),
     Operator(Operator),
+    RowCondition(VarId, Box<Expression>),
     BinaryOp(Box<Expression>, Box<Expression>, Box<Expression>), //lhs, op, rhs
     Subexpression(BlockId),
     Block(BlockId),

crates/nu-protocol/src/engine/engine_state.rs

@@ -123,6 +123,24 @@ impl EngineState {
         None
     }
 
+    pub fn find_commands_by_prefix(&self, name: &[u8]) -> Vec<Vec<u8>> {
+        let mut output = vec![];
+
+        for scope in self.scope.iter().rev() {
+            for decl in &scope.decls {
+                if decl.0.starts_with(name) {
+                    output.push(decl.0.clone());
+                }
+            }
+        }
+
+        output
+    }
+
+    pub fn get_span_contents(&self, span: Span) -> &[u8] {
+        &self.file_contents[span.start..span.end]
+    }
+
     pub fn get_var(&self, var_id: VarId) -> &Type {
         self.vars
             .get(var_id)
@@ -496,6 +514,24 @@ impl<'a> StateWorkingSet<'a> {
         }
     }
 
+    pub fn find_commands_by_prefix(&self, name: &[u8]) -> Vec<Vec<u8>> {
+        let mut output = vec![];
+
+        for scope in self.delta.scope.iter().rev() {
+            for decl in &scope.decls {
+                if decl.0.starts_with(name) {
+                    output.push(decl.0.clone());
+                }
+            }
+        }
+
+        let mut permanent = self.permanent_state.find_commands_by_prefix(name);
+
+        output.append(&mut permanent);
+
+        output
+    }
+
     pub fn get_block(&self, block_id: BlockId) -> &Block {
         let num_permanent_blocks = self.permanent_state.num_blocks();
         if block_id < num_permanent_blocks {

crates/nu-protocol/src/value/mod.rs

@@ -277,6 +277,24 @@ impl Value {
 
         Ok(current)
     }
+
+    pub fn string(s: &str, span: Span) -> Value {
+        Value::String {
+            val: s.into(),
+            span,
+        }
+    }
+
+    pub fn is_true(&self) -> bool {
+        matches!(self, Value::Bool { val: true, .. })
+    }
+
+    pub fn columns(&self) -> Vec<String> {
+        match self {
+            Value::Record { cols, .. } => cols.clone(),
+            _ => vec![],
+        }
+    }
 }
 
 impl PartialEq for Value {