Module: Ibex::Frontend::TokenAdapter::DeclarationLexerState

Included in:
DeclarationState
Defined in:
lib/ibex/frontend/token_adapter/declaration_lexer_state.rb,
sig/ibex/frontend/token_adapter/declaration_lexer_state.rbs

Overview

Context transitions for the extended root-only lexer declaration.

Instance Method Summary collapse

Instance Method Details

#begin_lexer_entry(token) ⇒ external_token

RBS:

  • (Token token) -> external_token

Parameters:

Returns:

  • (external_token) 


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# File 'lib/ibex/frontend/token_adapter/declaration_lexer_state.rb', line 36

def begin_lexer_entry(token)
  # @type self: DeclarationState
  value = string_value(token)
  case value
  when "end" then finish_lexer_scope
  when "state"
    @state = :lexer_state_name
    :STATE
  when "skip"
    @state = :lexer_pattern
    :SKIP
  when "on"
    @state = :lexer_pattern
    :ON
  else
    @state = :lexer_pattern
    :IDENTIFIER
  end
end

#classify_lexer_identifier(token) ⇒ external_token

RBS:

  • (Token token) -> external_token

Parameters:

Returns:

  • (external_token) 


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# File 'lib/ibex/frontend/token_adapter/declaration_lexer_state.rb', line 16

def classify_lexer_identifier(token)
  # @type self: DeclarationState
  case @state
  when :lexer_entries, :lexer_action_or_entry then begin_lexer_entry(token)
  when :lexer_state_name
    @state = :lexer_state_do
    :IDENTIFIER
  when :lexer_state_do
    value = string_value(token)
    raise Ibex::Error, "#{token.location}: expected do, got #{value}" unless value == "do"

    @lexer_state_depth = (@lexer_state_depth || 0) + 1
    @state = :lexer_entries
    :DO
  else
    :IDENTIFIER
  end
end

#classify_lexer_scalar(type) ⇒ external_token?

RBS:

  • (external_token type) -> external_token?

Parameters:

  • type (external_token)

Returns:

  • (external_token, nil) 


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# File 'lib/ibex/frontend/token_adapter/declaration_lexer_state.rb', line 70

def classify_lexer_scalar(type)
  if @state == :lexer_pattern && %i[REGEXP LITERAL].include?(type)
    @state = :lexer_action_or_entry
    return type
  end
  return unless @state == :lexer_action_or_entry && type == :ACTION

  @state = :lexer_entries
  type
end

#finish_lexer_scope ⇒ external_token

RBS:

  • () -> external_token

Returns:

  • (external_token) 


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# File 'lib/ibex/frontend/token_adapter/declaration_lexer_state.rb', line 57

def finish_lexer_scope
  depth = @lexer_state_depth || 0
  if depth.positive?
    @lexer_state_depth = depth - 1
    @state = :lexer_entries
  else
    @state = :declaration
    @declaration = nil
  end
  :END
end

#lexer_declaration_state? ⇒ Boolean

RBS:

  • () -> bool

Returns:

  • (Boolean) 


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# File 'lib/ibex/frontend/token_adapter/declaration_lexer_state.rb', line 11

def lexer_declaration_state?
  @declaration == :lexer
end