updated changelog and exposed search.TokenFunctions

tools/search/filter.go

@@ -305,7 +305,7 @@ func resolveToken(token fexpr.Token, fieldResolver FieldResolver) (*ResolverResu
 			Params:     dbx.Params{placeholder: cast.ToFloat64(token.Literal)},
 		}, nil
 	case fexpr.TokenFunction:
-		fn, ok := tokenFunctions[token.Literal]
+		fn, ok := TokenFunctions[token.Literal]
 		if !ok {
 			return nil, fmt.Errorf("unknown function %q", token.Literal)
 		}

tools/search/token_functions.go

@@ -6,12 +6,12 @@ import (
 	"github.com/ganigeorgiev/fexpr"
 )
 
-var tokenFunctions = map[string]func(
+var TokenFunctions = map[string]func(
 	argTokenResolverFunc func(fexpr.Token) (*ResolverResult, error),
 	args ...fexpr.Token,
 ) (*ResolverResult, error){
 	// geoDistance(lonA, latA, lonB, latB) calculates the Haversine
-	// distance between 2 coordinates in kilometres (https://www.movable-type.co.uk/scripts/latlong.html).
+	// distance between 2 points in kilometres (https://www.movable-type.co.uk/scripts/latlong.html).
 	//
 	// The accepted arguments at the moment could be either a plain number or a column identifier (including NULL).
 	// If the column identifier cannot be resolved and converted to a numeric value, it resolves to NULL.

tools/search/token_functions_test.go

@@ -20,7 +20,7 @@ func TestTokenFunctionsGeoDistance(t *testing.T) {
 	}
 	defer testDB.Close()
 
-	fn, ok := tokenFunctions["geoDistance"]
+	fn, ok := TokenFunctions["geoDistance"]
 	if !ok {
 		t.Error("Expected geoDistance token function to be registered.")
 	}
@@ -173,7 +173,7 @@ func TestTokenFunctionsGeoDistanceExec(t *testing.T) {
 	}
 	defer testDB.Close()
 
-	fn, ok := tokenFunctions["geoDistance"]
+	fn, ok := TokenFunctions["geoDistance"]
 	if !ok {
 		t.Error("Expected geoDistance token function to be registered.")
 	}