S-expressions: Difference between revisions
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(→{{header|TXR}}: Added explicit parser.) |
(→{{header|TXR}}: Disclaimer about string literal lexing.) |
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The following solution avoids "cheating" in this way with the built-in parser; it implements a from-scratch S-exp parser which treats <code>!@#</code> as just a symbol. |
The following solution avoids "cheating" in this way with the built-in parser; it implements a from-scratch S-exp parser which treats <code>!@#</code> as just a symbol. |
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The grammar is as follows: |
The grammar is roughly as follows: |
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<pre> |
<pre> |
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junk: |
junk: |
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</pre> |
</pre> |
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TODO: Note that the recognizer for string literals does not actually process the interior escape sequences <code>\"</code>; these remain as part of the string data. The only processing is the stripping of the outer quotes from the lexeme. |
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{{omit from|Brlcad}} |
{{omit from|Brlcad}} |
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