Exception: Grammar::Ruby0::Error

Inherits:
Exception
  • Object
show all
Defined in:
lib/grammar/ruby0.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(raise = true) ⇒ Error

Returns a new instance of Error.



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# File 'lib/grammar/ruby0.rb', line 57

def initialize(raise=true)
    @list = []
    @expected = []
    @consumed = 0
    @raise = raise
end

Instance Attribute Details

#consumed ⇒ Object (readonly)

Returns the value of attribute consumed.



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# File 'lib/grammar/ruby0.rb', line 53

def consumed
  @consumed
end

#expected ⇒ Object (readonly)

Returns the value of attribute expected.



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# File 'lib/grammar/ruby0.rb', line 54

def expected
  @expected
end

#list ⇒ Object (readonly)

Returns the value of attribute list.



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# File 'lib/grammar/ruby0.rb', line 55

def list
  @list
end

#raise ⇒ Object

Returns the value of attribute raise.



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# File 'lib/grammar/ruby0.rb', line 56

def raise
  @raise
end

Instance Method Details

#[](expected, found) ⇒ Object 



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# File 'lib/grammar/ruby0.rb', line 63

def [](expected, found)
    @expected << expected if expected
    if @raise
        @list << [@expected, found]
        @expected = []
        Kernel.raise(self)
    end
end

#clear ⇒ Object 



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# File 'lib/grammar/ruby0.rb', line 80

def clear
    @consumed += 1
    @raise = true
    @expected.clear
    @list.clear
end

#concat(other) ⇒ Object 



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# File 'lib/grammar/ruby0.rb', line 76

def concat(other)
    @expected.concat(other.expected)
    @list.concat(other.list)
end

#each ⇒ Object

:yield: expected, found



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# File 'lib/grammar/ruby0.rb', line 86

def each # :yield: expected, found
    @list.each { |err|
        yield(*err)
    }
end

#noraise ⇒ Object 



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# File 'lib/grammar/ruby0.rb', line 71

def noraise
    @raise
ensure
    @raise = false
end

#to_s ⇒ Object 



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# File 'lib/grammar/ruby0.rb', line 107

def to_s
    to_str
end

#to_str ⇒ Object 



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# File 'lib/grammar/ruby0.rb', line 91

def to_str
    s = ""
    first = true
    @list.each { |err|
        s.concat(first ? "expected: " : "\nor: ")
        first = true
        err[0].each { |e|
            s << ?| unless first
            s.concat(e.to_s)
            first = false
        }
        s.concat(", found: ").concat(err[1].to_s)
        first = false
    }
    s
end