Permit evaluation of functions with operator names without inputs.

wordplaydev · Aug 3, 2024 · ceface8 · ceface8
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -9,6 +9,7 @@ Dates are in `YYYY-MM-DD` format and versions are in [semantic versioning](http:
 
 -   Repaired borrowed bindings from other sources.
 -   Prevent project reevaluation during typing.
+-   Permit evaluation of functions with operator names without inputs.
 
 ## 0.10.7 2024-07-27
 

diff --git a/src/parser/parseExpression.ts b/src/parser/parseExpression.ts
@@ -239,8 +239,14 @@ function parseAtomicExpression(tokens: Tokens): Expression {
                   : // Nones
                     tokens.nextIs(Sym.None)
                     ? parseNone(tokens)
-                    : // Unary expressions before names and binary operators, since some unary can be multiple.
-                      tokens.nextIsUnary()
+                    : // Unary expressions are a unary operator and then any expression.
+                      // The only exception is if it's immediately followed except for an eval open and close. This allows functions with operator names to be evaluated.
+                      tokens.nextIsUnary() &&
+                        !tokens.nextAre(
+                            Sym.Operator,
+                            Sym.EvalOpen,
+                            Sym.EvalClose,
+                        )
                       ? new UnaryEvaluate(
                             parseReference(tokens),
                             parseAtomicExpression(tokens),