Module: RuVim::Lang::Go

Defined in:
lib/ruvim/lang/go.rb

Constant Summary collapse

KEYWORDS = 
%w[
  break case chan const continue default defer else fallthrough
  for func go goto if import interface map package range return
  select struct switch type var
  true false nil iota
].freeze
TYPES = 
%w[
  bool byte complex64 complex128 error float32 float64
  int int8 int16 int32 int64 rune string
  uint uint8 uint16 uint32 uint64 uintptr any comparable
].freeze
ALL_KEYWORDS = 
(KEYWORDS + TYPES).uniq.freeze
KEYWORD_RE = 
/\b(?:#{ALL_KEYWORDS.join("|")})\b/
STRING_DOUBLE_RE = 
/"(?:\\.|[^"\\])*"/
STRING_RAW_RE = 
/`[^`]*`/
CHAR_RE = 
/'(?:\\.|[^'\\])'/
NUMBER_RE = 
/\b(?:0[xXoObB][\da-fA-F_]+|\d[\d_]*(?:\.[\d_]+)?(?:[eE][+-]?\d+)?i?)\b/
LINE_COMMENT_RE = 
%r{//.*}
BLOCK_COMMENT_RE = 
%r{/\*.*?\*/}
CONSTANT_RE = 
/\b[A-Z][A-Z0-9_]{1,}\b/
INDENT_OPEN_RE = 
/\{\s*(?:\/\/.*)?$/
INDENT_CLOSE_RE = 
/\A\s*\}/
DEDENT_TRIGGERS = 
{
  "}" => /\A(\s*)\}/
}.freeze

Class Method Summary collapse

Class Method Details

.calculate_indent(lines, target_row, shiftwidth) ⇒ Object 



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# File 'lib/ruvim/lang/go.rb', line 39

def calculate_indent(lines, target_row, shiftwidth)
  depth = 0
  (0...target_row).each do |row|
    line = lines[row].to_s
    line.each_char do |ch|
      case ch
      when "{" then depth += 1
      when "}" then depth -= 1
      end
    end
  end

  target_line = lines[target_row].to_s.lstrip
  depth -= 1 if target_line.match?(INDENT_CLOSE_RE)
  depth = 0 if depth < 0
  depth * shiftwidth
end

.color_columns(text) ⇒ Object 



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# File 'lib/ruvim/lang/go.rb', line 65

def color_columns(text)
  cols = {}
  Highlighter.apply_regex(cols, text, CHAR_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, STRING_DOUBLE_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, STRING_RAW_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, KEYWORD_RE, Highlighter::KEYWORD_COLOR)
  Highlighter.apply_regex(cols, text, NUMBER_RE, Highlighter::NUMBER_COLOR)
  Highlighter.apply_regex(cols, text, CONSTANT_RE, Highlighter::CONSTANT_COLOR)
  Highlighter.apply_regex(cols, text, BLOCK_COMMENT_RE, Highlighter::COMMENT_COLOR, override: true)
  Highlighter.apply_regex(cols, text, LINE_COMMENT_RE, Highlighter::COMMENT_COLOR, override: true)
  cols
end

.dedent_trigger(char) ⇒ Object 



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# File 'lib/ruvim/lang/go.rb', line 61

def dedent_trigger(char)
  DEDENT_TRIGGERS[char]
end

.indent_trigger?(line) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruvim/lang/go.rb', line 57

def indent_trigger?(line)
  line.to_s.rstrip.match?(INDENT_OPEN_RE)
end