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30 lines
1.7 KiB
Text
30 lines
1.7 KiB
Text
There are numerous possible way of categorizing the entities and concepts that
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make up a programming language. Ruby has a fairly large number of reserved
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words. These words significantly describe major elements of the language,
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including flow control constructs like 'for' and 'while', conditional
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execution like 'if' and 'unless', exceptional execution control like 'rescue',
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etc. There are also literals for the basic "types" like String, Regexp, Array
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and Fixnum.
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Behavioral specifications describe the behavior of concrete entities. Rather
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than using concepts of computation to organize these spec files, we use
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entities of the Ruby language. Consider looking at any syntactic element of a
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Ruby program. With (almost) no ambiguity, one can identify it as a literal,
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reserved word, variable, etc. There is a spec file that corresponds to each
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literal construct and most reserved words, with the exceptions noted below.
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There are also several files that are more difficult to classify: all
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predefined variables, constants, and objects (predefined_spec.rb), the
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precedence of all operators (precedence_spec.rb), the behavior of assignment
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to variables (variables_spec.rb), the behavior of subprocess execution
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(execution_spec.rb), the behavior of the raise method as it impacts the
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execution of a Ruby program (raise_spec.rb), and the block entities like
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'begin', 'do', ' { ... }' (block_spec.rb).
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Several reserved words and other entities are combined with the primary
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reserved word or entity to which they are related:
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false, true, nil, self predefined_spec.rb
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in for_spec.rb
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then, elsif if_spec.rb
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when case_spec.rb
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catch throw_spec.rb
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