Generator-jhipster: regex pattern with slashes failed

[RizziCR]

Overview of the issue

My URL regex string for an entity field pattern fails

INFO! The JDL is being parsed.
error: Error message:
        unexpected character: ->\<- at offset: 5572, skipped 1 characters.
SyntaxError: Error: unexpected character: ->\<- at offset: 5572, skipped 1 characters.
ERROR! Error while parsing applications and entities from the JDL SyntaxError: Error: unexpected character: ->\<- at offset: 5572, skipped 1 characters.
SyntaxError: Error: unexpected character: ->\<- at offset: 5572, skipped 1 characters.
    at callApiMethod (/usr/local/lib/node_modules/generator-jhipster/node_modules/jhipster-core/lib/reader/jdl_reader.js:88:11)
    at parse (/usr/local/lib/node_modules/generator-jhipster/node_modules/jhipster-core/lib/reader/jdl_reader.js:72:10)
    at Object.parseFromFiles (/usr/local/lib/node_modules/generator-jhipster/node_modules/jhipster-core/lib/reader/jdl_reader.js:41:10)
    at parseFiles (/usr/local/lib/node_modules/generator-jhipster/node_modules/jhipster-core/lib/jdl/jdl_importer.js:82:20)
    at JDLImporter.import (/usr/local/lib/node_modules/generator-jhipster/node_modules/jhipster-core/lib/jdl/jdl_importer.js:64:30)
    at JDLProcessor.importJDL (/usr/local/lib/node_modules/generator-jhipster/cli/import-jdl.js:76:41)
    at JDLProcessor.importJDL (/usr/local/lib/node_modules/generator-jhipster/cli/import-jdl.js:292:38)
    at module.exports (/usr/local/lib/node_modules/generator-jhipster/cli/import-jdl.js:446:21)
    at Command.<anonymous> (/usr/local/lib/node_modules/generator-jhipster/cli/cli.js:72:36)
    at Command.listener (/usr/local/lib/node_modules/generator-jhipster/node_modules/commander/index.js:315:8)

##### **Motivation for or Use Case** i try to regex for url's with the following, working regex string `^(https?|ftp|file):\\/\\/[-a-zA-Z0-9+&@#\\/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#\\/%=~_|]$` but the jdl parser throw an exception because auf the slashes. i try only forward slashes, escaping with one oder two backward slashes. ##### **Reproduce the error** create an jdl file with the following entity

entity DummyEntity {
  /** fieldName */
  name String required,
  website String pattern(/^(https?|ftp|file):\\/\\/[-a-zA-Z0-9+&@#\\/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#\\/%=~_|]$/),
  email String pattern(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/),
}

##### **JHipster Version(s)** i use jHipster version 6.0.0 ##### **JHipster configuration** `INFO! Using JHipster version installed globally INFO! Executing jhipster:info INFO! Options: from-cli: true Welcome to the JHipster Information Sub-Generator ##### **JHipster Version(s)**

/Users/rizzi/Documents/WORK/EPBF/IdeaProjects/BitsButler
└── (empty)

cat: no such file or directory: .yo-rc.json ##### **JHipster configuration, a `.yo-rc.json` file generated in the root folder**

.yo-rc.json file

JDL for the Entity configuration(s) entityName.json files generated in the .jhipster directory

JDL entity definitions

Environment and Tools

openjdk version "12" 2019-03-19
OpenJDK Runtime Environment (build 12+33)
OpenJDK 64-Bit Server VM (build 12+33, mixed mode, sharing)

git version 2.21.0

node: v12.1.0

npm: 6.9.0

yeoman: 2.0.5

yarn: 1.15.2

Docker version 18.09.2, build 6247962

docker-compose version 1.23.2, build 1110ad01

INFO! Congratulations, JHipster execution is complete!
`

no files generated

Browsers and Operating System

i use macOS 10.14.5

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[vinicius91carvalho]

I am with the same problem. I am using JHipster 6.0.1.

The pattern:

/[0-9]{2}\.?[0-9]{3}\.?[0-9]{3}\/?[0-9]{4}\-?[0-9]{2}/

The message that I was receiving is:

INFO! The JDL is being parsed.
        error: Error message:
    unexpected character: ->?<- at offset: 180, skipped 1 characters.
SyntaxError: Error: unexpected character: ->?<- at offset: 180, skipped 1 characters.
ERROR! Error while parsing applications and entities from the JDL SyntaxError: Error: unexpected character: ->?<- at offset: 180, skipped 1 characters.
SyntaxError: Error: unexpected character: ->?<- at offset: 180, skipped 1 characters.
    at callApiMethod (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/node_modules/jhipster-core/lib/reader/jdl_reader.js:88:11)
    at parse (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/node_modules/jhipster-core/lib/reader/jdl_reader.js:72:10)
    at Object.parseFromFiles (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/node_modules/jhipster-core/lib/reader/jdl_reader.js:41:10)
    at parseFiles (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/node_modules/jhipster-core/lib/jdl/jdl_importer.js:82:20)
    at JDLImporter.import (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/node_modules/jhipster-core/lib/jdl/jdl_importer.js:64:30)
    at JDLProcessor.importJDL (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/cli/import-jdl.js:76:41)
    at JDLProcessor.importJDL (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/cli/import-jdl.js:292:38)
    at module.exports (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/cli/import-jdl.js:446:21)
    at Command.command.allowUnknownOption.description.action.args (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/cli/cli.js:72:36)
    at Command.listener (/Users/viniciuscarvalho/Projects/sbt-platform/gateway/node_modules/generator-jhipster/node_modules/commander/index.js:315:8)

[MathieuAA]

This is not the same error... But I'll try to find time to look into it

[MathieuAA]

Apparently parsing a regexp, with a regexp, is like expecting too much of a regexp regexp-based parsing system.
Bottom line (without the joking): this is tricky. I'm trying solutions to get it working.