Implement call to not builtin

Author: kyleect

spec/not_eq_true.expr

@@ -0,0 +1 @@
+(not (eq `foo` `foo`))

spec/not_eq_true.expr.ts

@@ -0,0 +1,23 @@
+import * as ReqlangExpr from "@reqlang-expr-tspl/runtime";
+
+const expression: ReqlangExpr.Expression = (ctx) => {
+  return !("foo" as ReqlangExpr.ExprValue === "foo" as ReqlangExpr.ExprValue);
+};
+
+const args = ReqlangExpr.getArgs();
+
+const env = new ReqlangExpr.Env(
+  args.vars,
+  args.prompts,
+  args.secrets,
+  args.client
+);
+
+const context = {
+  env,
+  builtins: ReqlangExpr.builtinFns,
+};
+
+const value = expression(context);
+
+console.log(JSON.stringify(value));

spec/not_eq_true.expr.ts.interpreted

@@ -0,0 +1 @@
+false

spec/not_false.expr

@@ -0,0 +1 @@
+(not false)

spec/not_false.expr.ts

@@ -0,0 +1,23 @@
+import * as ReqlangExpr from "@reqlang-expr-tspl/runtime";
+
+const expression: ReqlangExpr.Expression = (ctx) => {
+  return !false;
+};
+
+const args = ReqlangExpr.getArgs();
+
+const env = new ReqlangExpr.Env(
+  args.vars,
+  args.prompts,
+  args.secrets,
+  args.client
+);
+
+const context = {
+  env,
+  builtins: ReqlangExpr.builtinFns,
+};
+
+const value = expression(context);
+
+console.log(JSON.stringify(value));

spec/not_false.expr.ts.interpreted

@@ -0,0 +1 @@
+true

spec/not_true.expr

@@ -0,0 +1 @@
+(not true)

spec/not_true.expr.ts

@@ -0,0 +1,23 @@
+import * as ReqlangExpr from "@reqlang-expr-tspl/runtime";
+
+const expression: ReqlangExpr.Expression = (ctx) => {
+  return !true;
+};
+
+const args = ReqlangExpr.getArgs();
+
+const env = new ReqlangExpr.Env(
+  args.vars,
+  args.prompts,
+  args.secrets,
+  args.client
+);
+
+const context = {
+  env,
+  builtins: ReqlangExpr.builtinFns,
+};
+
+const value = expression(context);
+
+console.log(JSON.stringify(value));

spec/not_true.expr.ts.interpreted

@@ -0,0 +1 @@
+false

src/lib.rs

@@ -87,6 +87,16 @@ fn transpile_expr(expr: &Expr) -> String {
                 let arg2 = args.get(1).unwrap();
 
                 format!("({arg1} as ReqlangExpr.ExprValue === {arg2} as ReqlangExpr.ExprValue)")
+            } else if callee == "not" {
+                let args: Vec<String> = expr_call
+                    .args
+                    .iter()
+                    .map(|expr| transpile_expr(&expr.0))
+                    .collect();
+
+                let arg1 = args.first().unwrap();
+
+                format!("!{arg1}")
             } else {
                 let args: Vec<String> = expr_call
                     .args