Class: Psych::Pure::Parser::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/psych/pure.rb

Overview

A stack of contexts that the parser is currently within. We use this to decorate error messages with the context in which they occurred.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Context

Returns a new instance of Context.



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# File 'lib/psych/pure.rb', line 934

def initialize
  @contexts = []
  @deepest = nil
  @deepest_depth = 0
end

Instance Method Details

#syntax_error(source, filename, pos, message) ⇒ Object 



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# File 'lib/psych/pure.rb', line 940

def syntax_error(source, filename, pos, message)
  stack = @contexts.empty? ? @deepest : @contexts
  if stack && !stack.empty?
    pos = stack[-2]
    message = "#{message}\nwithin:\n"
    idx = 0
    while idx < stack.size
      message << " #{format_entry(source, stack[idx], stack[idx + 1], stack[idx + 2])}\n"
      idx += 3 # each entry uses 3 array slots [type, pos, extra]
    end
  end

  SyntaxError.new(filename, source.line(pos), source.column(pos), pos, message, nil)
end

#within_block_mapping(pos, indent, &block) ⇒ Object 



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# File 'lib/psych/pure.rb', line 955

def within_block_mapping(pos, indent, &block)
  within(:block_mapping, pos, indent, &block)
end

#within_block_sequence(pos, indent, &block) ⇒ Object 



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# File 'lib/psych/pure.rb', line 959

def within_block_sequence(pos, indent, &block)
  within(:block_sequence, pos, indent, &block)
end

#within_double_quoted_scalar(pos, &block) ⇒ Object 



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# File 'lib/psych/pure.rb', line 963

def within_double_quoted_scalar(pos, &block)
  within(:double_quoted_scalar, pos, nil, &block)
end

#within_flow_mapping(pos, context, &block) ⇒ Object 



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# File 'lib/psych/pure.rb', line 967

def within_flow_mapping(pos, context, &block)
  within(:flow_mapping, pos, context, &block)
end

#within_flow_sequence(pos, context, &block) ⇒ Object 



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# File 'lib/psych/pure.rb', line 971

def within_flow_sequence(pos, context, &block)
  within(:flow_sequence, pos, context, &block)
end