Return the same string passed for error

Fixes Issue #43

.travis.yml

@@ -4,8 +4,8 @@ matrix:
   allow_failures:
   - go: master
   include:
-  - go: 1.14.x
   - go: 1.15.x
+  - go: 1.16.x
   - go: master
 env:
   global:
@@ -24,6 +24,6 @@ deploy:
   - cli/build/enumer.windows-amd64.exe.tar.gz
   - cli/build/sha256sum.txt
   on:
-    go: 1.15.x
+    go: 1.16.x
     repo: dmarkham/enumer
     tags: true

README.md

@@ -1,4 +1,4 @@
-# Enumer [![GoDoc](https://godoc.org/github.com/dmarkham/enumer?status.svg)](https://godoc.org/github.com/dmarkham/enumer) [![Go Report Card](https://goreportcard.com/badge/github.com/dmarkham/enumer)](https://goreportcard.com/report/github.com/dmarkham/enumer) [![GitHub Release](https://img.shields.io/github/release/dmarkham/enumer.svg)](https://github.com/dmarkham/enumer/releases)[![Build Status](https://travis-ci.org/dmarkham/enumer.svg?branch=master)](https://travis-ci.org/dmarkham/enumer)
+# Enumer [![GoDoc](https://godoc.org/github.com/dmarkham/enumer?status.svg)](https://godoc.org/github.com/dmarkham/enumer) [![Go Report Card](https://goreportcard.com/badge/github.com/dmarkham/enumer)](https://goreportcard.com/report/github.com/dmarkham/enumer) [![GitHub Release](https://img.shields.io/github/release/dmarkham/enumer.svg)](https://github.com/dmarkham/enumer/releases)[![Build Status](https://travis-ci.com/dmarkham/enumer.svg?branch=master)](https://travis-ci.com/dmarkham/enumer)
 
 
 Enumer is a tool to generate Go code that adds useful methods to Go enums (constants with a specific type).

enumer.go

@@ -10,8 +10,8 @@ func %[1]sString(s string) (%[1]s, error) {
 	if val, ok := _%[1]sNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _%[1]sNameToValueMap[s]; ok {
+	if val, ok := _%[1]sNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%%s does not belong to %[1]s values", s)

testdata/day.golden

@@ -60,8 +60,8 @@ func DayString(s string) (Day, error) {
 	if val, ok := _DayNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _DayNameToValueMap[s]; ok {
+	if val, ok := _DayNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Day values", s)

testdata/dayTrimAndPrefix.golden

@@ -60,8 +60,8 @@ func DayString(s string) (Day, error) {
 	if val, ok := _DayNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _DayNameToValueMap[s]; ok {
+	if val, ok := _DayNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Day values", s)

testdata/dayWithLinecomment.golden

@@ -60,8 +60,8 @@ func DayString(s string) (Day, error) {
 	if val, ok := _DayNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _DayNameToValueMap[s]; ok {
+	if val, ok := _DayNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Day values", s)

testdata/dayWithPrefix.golden

@@ -60,8 +60,8 @@ func DayString(s string) (Day, error) {
 	if val, ok := _DayNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _DayNameToValueMap[s]; ok {
+	if val, ok := _DayNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Day values", s)

testdata/gap.golden

@@ -81,8 +81,8 @@ func GapString(s string) (Gap, error) {
 	if val, ok := _GapNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _GapNameToValueMap[s]; ok {
+	if val, ok := _GapNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Gap values", s)

testdata/num.golden

@@ -53,8 +53,8 @@ func NumString(s string) (Num, error) {
 	if val, ok := _NumNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _NumNameToValueMap[s]; ok {
+	if val, ok := _NumNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Num values", s)

testdata/offset.golden

@@ -45,8 +45,8 @@ func NumberString(s string) (Number, error) {
 	if val, ok := _NumberNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _NumberNameToValueMap[s]; ok {
+	if val, ok := _NumberNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Number values", s)

testdata/prime.golden

@@ -97,8 +97,8 @@ func PrimeString(s string) (Prime, error) {
 	if val, ok := _PrimeNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _PrimeNameToValueMap[s]; ok {
+	if val, ok := _PrimeNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Prime values", s)

testdata/primeGQLGen.golden

@@ -97,8 +97,8 @@ func PrimeString(s string) (Prime, error) {
 	if val, ok := _PrimeNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _PrimeNameToValueMap[s]; ok {
+	if val, ok := _PrimeNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Prime values", s)

testdata/primeJson.golden

@@ -97,8 +97,8 @@ func PrimeString(s string) (Prime, error) {
 	if val, ok := _PrimeNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _PrimeNameToValueMap[s]; ok {
+	if val, ok := _PrimeNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Prime values", s)

testdata/primeJsonAndSql.golden

@@ -97,8 +97,8 @@ func PrimeString(s string) (Prime, error) {
 	if val, ok := _PrimeNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _PrimeNameToValueMap[s]; ok {
+	if val, ok := _PrimeNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Prime values", s)

testdata/primeSql.golden

@@ -97,8 +97,8 @@ func PrimeString(s string) (Prime, error) {
 	if val, ok := _PrimeNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _PrimeNameToValueMap[s]; ok {
+	if val, ok := _PrimeNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Prime values", s)

testdata/primeText.golden

@@ -97,8 +97,8 @@ func PrimeString(s string) (Prime, error) {
 	if val, ok := _PrimeNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _PrimeNameToValueMap[s]; ok {
+	if val, ok := _PrimeNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Prime values", s)

testdata/primeYaml.golden

@@ -97,8 +97,8 @@ func PrimeString(s string) (Prime, error) {
 	if val, ok := _PrimeNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _PrimeNameToValueMap[s]; ok {
+	if val, ok := _PrimeNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Prime values", s)

testdata/trimPrefix.golden

@@ -60,8 +60,8 @@ func DayString(s string) (Day, error) {
 	if val, ok := _DayNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _DayNameToValueMap[s]; ok {
+	if val, ok := _DayNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Day values", s)

testdata/trimPrefixMultiple.golden

@@ -60,8 +60,8 @@ func DayString(s string) (Day, error) {
 	if val, ok := _DayNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _DayNameToValueMap[s]; ok {
+	if val, ok := _DayNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Day values", s)

testdata/unum.golden

@@ -63,8 +63,8 @@ func UnumString(s string) (Unum, error) {
 	if val, ok := _UnumNameToValueMap[s]; ok {
 		return val, nil
 	}
-	s = strings.ToLower(s)
+
-	if val, ok := _UnumNameToValueMap[s]; ok {
+	if val, ok := _UnumNameToValueMap[strings.ToLower(s)]; ok {
 		return val, nil
 	}
 	return 0, fmt.Errorf("%s does not belong to Unum values", s)