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Syntax Tree support for ERB.

Currently handles

• ERB
  • Tags with and without output
  • Tags inside strings
  • if,elsif,else andunless statements
  • blocks
  • comments
  • Formatting of the ruby-code is done bysyntax_tree
• HTML
  • Tags with attributes
  • Tags with and without closing tags
  • Comments
• Vue
  • Attributes, events and slots using:,@ and# respectively
• Text output

• Please add to this pinned issue (davidwessman#28) or create a separate issue if you encounter formatting or parsing errors.

Add this line to your application's Gemfile:

gem"w_syntax_tree-erb","~> 0.11",require:false

I added thew_ prefix to avoid conflicts if there will ever be an officialsyntax_tree-erb gem.

bundleexec stree ast --plugins=erb"./**/*.html.erb"

bundleexec stree write --plugins=erb"./**/*.html.erb"

require"syntax_tree/erb"ppSyntaxTree::ERB.parse(source)# print out the ASTputsSyntaxTree::ERB.format(source)# format the AST

In order to get a list of all parsing errors (which needs to be fixed before the formatting works), this script can be used:

#!/bin/rubyrequire"syntax_tree/erb"failures=[]Dir.glob("./app/**/*.html.erb").eachdo |file|puts("Processing#{file}")beginsource=SyntaxTree::ERB.read(file)SyntaxTree::ERB.parse(source)SyntaxTree::ERB.format(source)rescue=>exceptionfailures <<{file:file,message:exception.message}endendputsfailures

Installhusky:

npm i -g husky

Setup linting:

npm run prepare

Install dependencies and run tests:

bundlebundleexec rake

Bug reports and pull requests are welcome on GitHub athttps://github.com/davidwessman/syntax_tree-erb.

The gem is available as open source under the terms of theMIT License.