add support for env variables to the DSL

lang/parser_server_test.go

@@ -4,6 +4,35 @@ import (
 	"testing"
 )
 
+// Helper functions for creating ConfigValue and IntValue instances
+func literalConfigValue(value string) *ConfigValue {
+	return &ConfigValue{Literal: &value}
+}
+
+func literalIntValue(value int) *IntValue {
+	return &IntValue{Literal: &value}
+}
+
+func envConfigValue(name string, defaultValue *string, required bool) *ConfigValue {
+	return &ConfigValue{
+		EnvVar: &EnvVar{
+			Name:     name,
+			Default:  defaultValue,
+			Required: required,
+		},
+	}
+}
+
+func envIntValue(name string, defaultValue *string, required bool) *IntValue {
+	return &IntValue{
+		EnvVar: &EnvVar{
+			Name:     name,
+			Default:  defaultValue,
+			Required: required,
+		},
+	}
+}
+
 func TestParseServerDefinitions(t *testing.T) {
 	tests := []struct {
 		name    string
@@ -23,8 +52,8 @@ func TestParseServerDefinitions(t *testing.T) {
 						Server: &Server{
 							Name: "MyApp",
 							Settings: []ServerSetting{
-								{Host: stringPtr("localhost")},
-								{Port: intPtr(8080)},
+								{Host: literalConfigValue("localhost")},
+								{Port: literalIntValue(8080)},
 							},
 						},
 					},
@@ -43,7 +72,7 @@ func TestParseServerDefinitions(t *testing.T) {
 						Server: &Server{
 							Name: "WebApp",
 							Settings: []ServerSetting{
-								{Host: stringPtr("0.0.0.0")},
+								{Host: literalConfigValue("0.0.0.0")},
 							},
 						},
 					},
@@ -62,7 +91,7 @@ func TestParseServerDefinitions(t *testing.T) {
 						Server: &Server{
 							Name: "APIServer",
 							Settings: []ServerSetting{
-								{Port: intPtr(3000)},
+								{Port: literalIntValue(3000)},
 							},
 						},
 					},