Class: Lrama::Lexer

Inherits:
Object
  • Object
show all
Includes:
Report::Duration
Defined in:
lib/lrama/lexer.rb,
lib/lrama/lexer/token.rb,
lib/lrama/lexer/token/type.rb

Overview

Lexer for parse.y

Defined Under Namespace

Classes: Token

Constant Summary collapse

Initial =

States

See: www.gnu.org/software/bison/manual/html_node/Grammar-Outline.html

0
Prologue = 
1
BisonDeclarations = 
2
GrammarRules = 
3
Epilogue = 
4

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Report::Duration

enable, enabled?, #report_duration

Constructor Details

#initialize(text) ⇒ Lexer

Returns a new instance of Lexer.



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# File 'lib/lrama/lexer.rb', line 24

def initialize(text)
  @text = text
  @state = Initial
  # Array of texts
  @prologue = []
  @bison_declarations = []
  @grammar_rules = []
  @epilogue = []

  @bison_declarations_tokens = []
  @grammar_rules_tokens = []

  @debug = false

  report_duration(:lex) do
    lex_text
    lex_bison_declarations_tokens
    lex_grammar_rules_tokens
  end
end

Instance Attribute Details

#bison_declarations ⇒ Object (readonly)

Token types



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# File 'lib/lrama/lexer.rb', line 21

def bison_declarations
  @bison_declarations
end

#bison_declarations_tokens ⇒ Object (readonly)

Token types



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# File 'lib/lrama/lexer.rb', line 21

def bison_declarations_tokens
  @bison_declarations_tokens
end

#epilogue ⇒ Object (readonly)

Token types



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# File 'lib/lrama/lexer.rb', line 21

def epilogue
  @epilogue
end

#grammar_rules ⇒ Object (readonly)

Token types



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# File 'lib/lrama/lexer.rb', line 21

def grammar_rules
  @grammar_rules
end

#grammar_rules_tokens ⇒ Object (readonly)

Token types



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# File 'lib/lrama/lexer.rb', line 21

def grammar_rules_tokens
  @grammar_rules_tokens
end

#prologue ⇒ Object (readonly)

Token types



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# File 'lib/lrama/lexer.rb', line 21

def prologue
  @prologue
end