Class: Parser::Source::Buffer
- Inherits:
-
Object
- Object
- Parser::Source::Buffer
- Defined in:
- lib/parser/source/buffer.rb
Instance Attribute Summary collapse
-
#first_line ⇒ Object
readonly
Returns the value of attribute first_line.
-
#name ⇒ Object
readonly
Returns the value of attribute name.
Instance Method Summary collapse
- #decompose_position(position) ⇒ Object
-
#initialize(name, first_line = 1) ⇒ Buffer
constructor
A new instance of Buffer.
- #read ⇒ Object
- #source ⇒ Object
- #source=(source) ⇒ Object
- #source_line(line) ⇒ Object
Constructor Details
#initialize(name, first_line = 1) ⇒ Buffer
Returns a new instance of Buffer.
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# File 'lib/parser/source/buffer.rb', line 7 def initialize(name, first_line = 1) @name = name @first_line = first_line @source = nil end |
Instance Attribute Details
#first_line ⇒ Object (readonly)
Returns the value of attribute first_line.
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# File 'lib/parser/source/buffer.rb', line 5 def first_line @first_line end |
#name ⇒ Object (readonly)
Returns the value of attribute name.
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# File 'lib/parser/source/buffer.rb', line 5 def name @name end |
Instance Method Details
#decompose_position(position) ⇒ Object
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# File 'lib/parser/source/buffer.rb', line 33 def decompose_position(position) line = line_for(position) line_begin = line_begin_positions[line] [ @first_line + line, position - line_begin ] end |
#read ⇒ Object
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# File 'lib/parser/source/buffer.rb', line 13 def read self.source = File.read(@name) self end |
#source ⇒ Object
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# File 'lib/parser/source/buffer.rb', line 19 def source if @source.nil? raise RuntimeError, 'Cannot extract source from uninitialized Source::Buffer' end @source end |
#source=(source) ⇒ Object
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# File 'lib/parser/source/buffer.rb', line 27 def source=(source) @source = source.freeze freeze end |
#source_line(line) ⇒ Object
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# File 'lib/parser/source/buffer.rb', line 40 def source_line(line) mapped_line = line - @first_line # Consider improving this naïve implementation. source_line = source.lines.drop(mapped_line).first # Line endings will be commonly present for all lines # except the last one. It does not make sense to keep them. if source_line.end_with? "\n" source_line.chomp else source_line end end |