[GO] Generator creates identifiers starting with a number

Description

When calling the code generation with my yaml, identifiers are created that start with a number. However, the go compiler interprets them wrongly. Example code:

/*
 * API Documentation
 *
 * Source of truth and network automation platform
 *
 * API version: 2.2.5 (2.2)
 * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
 */
package nautobot

type PortTypeChoices string

// List of PortTypeChoices
const (
    8P8C__PortTypeChoices PortTypeChoices = "8p8c"
    8P6C__PortTypeChoices PortTypeChoices = "8p6c"
    8P4C__PortTypeChoices PortTypeChoices = "8p4c"
    8P2C__PortTypeChoices PortTypeChoices = "8p2c"
    6P6C__PortTypeChoices PortTypeChoices = "6p6c"
    6P4C__PortTypeChoices PortTypeChoices = "6p4c"
    6P2C__PortTypeChoices PortTypeChoices = "6p2c"
    4P4C__PortTypeChoices PortTypeChoices = "4p4c"
    4P2C__PortTypeChoices PortTypeChoices = "4p2c"
    GG45_PortTypeChoices PortTypeChoices = "gg45"
    TERA_4P_PortTypeChoices PortTypeChoices = "tera-4p"
    TERA_2P_PortTypeChoices PortTypeChoices = "tera-2p"
    TERA_1P_PortTypeChoices PortTypeChoices = "tera-1p"
    110PUNCH__PortTypeChoices PortTypeChoices = "110-punch"
    BNC_PortTypeChoices PortTypeChoices = "bnc"
    F_PortTypeChoices PortTypeChoices = "f"
    N_PortTypeChoices PortTypeChoices = "n"
    MRJ21_PortTypeChoices PortTypeChoices = "mrj21"
    FC_PortTypeChoices PortTypeChoices = "fc"
    LC_PortTypeChoices PortTypeChoices = "lc"
    LC_PC_PortTypeChoices PortTypeChoices = "lc-pc"
    LC_UPC_PortTypeChoices PortTypeChoices = "lc-upc"
    LC_APC_PortTypeChoices PortTypeChoices = "lc-apc"
    LSH_PortTypeChoices PortTypeChoices = "lsh"
    LSH_PC_PortTypeChoices PortTypeChoices = "lsh-pc"
    LSH_UPC_PortTypeChoices PortTypeChoices = "lsh-upc"
    LSH_APC_PortTypeChoices PortTypeChoices = "lsh-apc"
    LX5_PortTypeChoices PortTypeChoices = "lx5"
    LX5_PC_PortTypeChoices PortTypeChoices = "lx5-pc"
    LX5_UPC_PortTypeChoices PortTypeChoices = "lx5-upc"
    LX5_APC_PortTypeChoices PortTypeChoices = "lx5-apc"
    MPO_PortTypeChoices PortTypeChoices = "mpo"
    MTRJ_PortTypeChoices PortTypeChoices = "mtrj"
    SC_PortTypeChoices PortTypeChoices = "sc"
    SC_PC_PortTypeChoices PortTypeChoices = "sc-pc"
    SC_UPC_PortTypeChoices PortTypeChoices = "sc-upc"
    SC_APC_PortTypeChoices PortTypeChoices = "sc-apc"
    ST_PortTypeChoices PortTypeChoices = "st"
    CS_PortTypeChoices PortTypeChoices = "cs"
    SN_PortTypeChoices PortTypeChoices = "sn"
    SMA_905_PortTypeChoices PortTypeChoices = "sma-905"
    SMA_906_PortTypeChoices PortTypeChoices = "sma-906"
    URM_P2_PortTypeChoices PortTypeChoices = "urm-p2"
    URM_P4_PortTypeChoices PortTypeChoices = "urm-p4"
    URM_P8_PortTypeChoices PortTypeChoices = "urm-p8"
    SPLICE_PortTypeChoices PortTypeChoices = "splice"
    OTHER_PortTypeChoices PortTypeChoices = "other"
)

E.g. the 8P is interpreted as exponent, even though it's the type. These are the errors I see with this file:

oapi-1      | ./model_port_type_choices.go:15:2: syntax error: unexpected literal 8P8, expected name
oapi-1      | ./model_port_type_choices.go:15:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:16:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:17:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:18:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:19:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:20:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:21:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:22:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:23:3: 'P' exponent requires hexadecimal mantissa
oapi-1      | ./model_port_type_choices.go:28:5: 'P' exponent requires hexadecimal mantissa

Swagger-codegen version

3.0.58

Command line used for generation

java -jar swagger-codegen-cli.jar generate -i swagger.yaml -l go -o /client -DpackageName=nautobot

Steps to reproduce

clone this repo/go to this branch: https://github.com/TobiPeterG/go-nautobot/tree/switch-swagger-generator find swagger.yaml in api folder generate code using swagger

Suggest a fix/enhancement

Identifiers starting with a number could be prefixed.

Still an issue with version 3.0.63

And type replicas is int32 and swagger code creates

1__Replicas Replicas = "1"

which is wrong...

The Couchbase Capella Management API provides a set of REST APIs for creating and managing Capella instances. It enables users to perform operations such as creating new Capella instances, managing their configurations, and interacting with the Capella services. This API documentation specifies the endpoints, request and response formats, and authentication requirements for seamless integration with Couchbase Capella. To access the Management API, you need an API key. To create an initial bootstrap API key you must use the Capella UI. Once you have created an initial bootstrap API key, you can use the Management API itself to create further API keys. To learn more, see Get Started with the Management API v4.0. For a history of updates to the Management API, see Management API v4.0 Change Log. API Base URL: https://cloudapi.cloud.couchbase.com Back to Management API v4.0 Documentation *
- API version: v4.0
- Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git) */ package capella // Replicas : The number of replicas for the bucket. To learn more, see Create a Bucket. type Replicas int32

// List of Replicas const ( 1Replicas Replicas = "1" 2Replicas Replicas = "2" 3__Replicas Replicas = "3" )

swagger-api / swagger-codegen