Exception: Paco::ParseError

Inherits:
Error
  • Object
show all
Defined in:
lib/paco/parse_error.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ctx, expected) ⇒ ParseError

Returns a new instance of ParseError.

Parameters:



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# File 'lib/paco/parse_error.rb', line 10

def initialize(ctx, expected)
  @ctx = ctx
  @pos = ctx.pos
  @expected = expected
end

Instance Attribute Details

#ctx ⇒ Object (readonly)

Returns the value of attribute ctx.



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# File 'lib/paco/parse_error.rb', line 7

def ctx
  @ctx
end

#expected ⇒ Object (readonly)

Returns the value of attribute expected.



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# File 'lib/paco/parse_error.rb', line 7

def expected
  @expected
end

#pos ⇒ Object (readonly)

Returns the value of attribute pos.



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# File 'lib/paco/parse_error.rb', line 7

def pos
  @pos
end

Instance Method Details

#callstack ⇒ Object 



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# File 'lib/paco/parse_error.rb', line 16

def callstack
  ctx.callstack
end

#message ⇒ Object 



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# File 'lib/paco/parse_error.rb', line 20

def message
  index = ctx.index(pos)
  <<~MSG
    \nParsing error
    line #{index.line}, column #{index.column}:
    unexpected #{ctx.eof? ? "end of file" : ctx.input[pos].inspect}
    expecting #{expected}
  MSG
end