From e38adfa890e2f29f9ad15e6fc8c9f50eca09b8cb Mon Sep 17 00:00:00 2001
From: jihtsan <15151999611@163.com>
Date: Mon, 19 Oct 2026 18:26:30 +0800
Subject: [PATCH] Omit unused numeric enum parse maps with noparse

Fixes #313
---
 example/noparse_enum.go     | 8 --------
 generator/enum.tmpl         | 2 +-
 generator/generator_test.go | 4 ++++
 3 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/example/noparse_enum.go b/example/noparse_enum.go
index 40d1d26..0024ab7 100644
--- a/example/noparse_enum.go
+++ b/example/noparse_enum.go
@@ -83,11 +83,3 @@ func (x UnparsedValues) IsValid() bool {
 	_, ok := _UnparsedValuesMap[x]
 	return ok
 }
-
-var _UnparsedValuesValue = map[string]UnparsedValues{
-	_UnparsedValuesName[0:1]: UnparsedValuesA,
-	_UnparsedValuesName[1:2]: UnparsedValuesB,
-	_UnparsedValuesName[2:3]: UnparsedValuesC,
-	_UnparsedValuesName[3:4]: UnparsedValuesD,
-	_UnparsedValuesName[4:5]: UnparsedValuesE,
-}
diff --git a/generator/enum.tmpl b/generator/enum.tmpl
index 43b13c3..0c4f9c1 100644
--- a/generator/enum.tmpl
+++ b/generator/enum.tmpl
@@ -63,9 +63,9 @@ func (x {{.enum.Name}}) IsValid() bool {
 	return ok
 }
 
+{{- if .generateParse }}
 var _{{.enum.Name}}Value = {{ unmapify .enum .lowercase }}
 
-{{- if .generateParse }}
 // {{.parseName}}{{.enum.Name}} attempts to convert a string to a {{.enum.Name}}.
 func {{.parseName}}{{.enum.Name}}(name string) ({{.enum.Name}}, error) {
 	if x, ok := _{{.enum.Name}}Value[name]; ok {
diff --git a/generator/generator_test.go b/generator/generator_test.go
index f8b3e8d..a344928 100644
--- a/generator/generator_test.go
+++ b/generator/generator_test.go
@@ -718,6 +718,7 @@ type Number int
 	// Should not contain Parse method
 	assert.NotContains(t, outputStr, "func ParseNumber")
 	assert.NotContains(t, outputStr, "func parseNumber")
+	assert.NotContains(t, outputStr, "var _NumberValue")
 
 	// Should still contain other methods
 	assert.Contains(t, outputStr, "func (x Number) String()")
@@ -744,6 +745,8 @@ type Greek string
 	// Should not contain Parse method
 	assert.NotContains(t, outputStr, "func ParseGreek")
 	assert.NotContains(t, outputStr, "func parseGreek")
+	// String enum IsValid still needs its lookup map.
+	assert.Contains(t, outputStr, "var _GreekValue")
 
 	// Should still contain other methods
 	assert.Contains(t, outputStr, "func (x Greek) String()")
@@ -772,6 +775,7 @@ type Number int
 
 	// Should contain unexported parse method
 	assert.Contains(t, outputStr, "func parseNumber(")
+	assert.Contains(t, outputStr, "var _NumberValue")
 
 	// Should contain marshal methods that use the unexported parse
 	assert.Contains(t, outputStr, "func (x *Number) UnmarshalText(")