Class: SyntaxSuggest::Capture::FallingIndentLines

Inherits:
Object
  • Object
show all
Defined in:
lib/syntax_suggest/capture/falling_indent_lines.rb

Overview

Shows the context around code provided by “falling” indentation

If this is the original code lines:

class OH
  def hello
    it "foo" do
  end
end

And this is the line that is captured

it "foo" do

It will yield its surrounding context:

class OH
  def hello
  end
end

Example:

FallingIndentLines.new(
    block: block,
    code_lines: @code_lines
).call do |line|
  @lines_to_output << line
end

Instance Method Summary collapse

Constructor Details

#initialize(code_lines:, block:) ⇒ FallingIndentLines

Returns a new instance of FallingIndentLines.



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# File 'lib/syntax_suggest/capture/falling_indent_lines.rb', line 36

def initialize(code_lines:, block:)
  @lines = nil
  @scanner = ScanHistory.new(code_lines: code_lines, block: block)
  @original_indent = block.current_indent
end

Instance Method Details

#call(&yieldable) ⇒ Object 



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# File 'lib/syntax_suggest/capture/falling_indent_lines.rb', line 42

def call(&yieldable)
  last_indent_up = @original_indent
  last_indent_down = @original_indent

  @scanner.commit_if_changed
  @scanner.scan(
    up: ->(line, _, _) {
      next true if line.empty?

      if line.indent < last_indent_up
        yieldable.call(line)
        last_indent_up = line.indent
      end
      true
    },
    down: ->(line, _, _) {
      next true if line.empty?

      if line.indent < last_indent_down
        yieldable.call(line)
        last_indent_down = line.indent
      end
      true
    }
  )
  @scanner.stash_changes
end