Method: Fast.replace

Defined in:
lib/fast/rewriter.rb

.replace(pattern, ast, source = nil, &replacement) ⇒ String

Replaces content based on a pattern.

Examples:

Fast.replace?(Fast.ast("a = 1"),"lvasgn") do |node|
  replace(node.location.name, 'variable_renamed')
end # => variable_renamed = 1

Parameters:

  • ast (Astrolabe::Node) —

    with the current AST to search.

  • pattern (String) —

    with the expression to be targeting nodes.

  • replacement (Proc) —

    gives the [Rewriter] context in the block.

Returns:

  • (String) —

    with the new source code after apply the replacement

See Also:



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# File 'lib/fast/rewriter.rb', line 17

def replace(pattern, ast, source = nil, &replacement)
  rewriter_for(pattern, ast, source, &replacement).rewrite!
end