<ahref="https://en.wikipedia.org/wiki/S-Expression"title="wp: S-Expression">S-Expressions</a> are one convenient way to parse and store data.
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Task:
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Write a simple reader/parser for S-Expressions that handles quoted and unquoted strings, integers and floats.
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The function should read a single but nested S-Expression from a string and
return it as a (nested) array.
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Newlines and other whitespace may be ignored unless contained within a quoted string.
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<p>“<tt>()</tt>” inside quoted strings are not interpreted, but treated as part of the string.
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Handling escaped quotes inside a string is optional; thus “<tt>(foo"bar)</tt>” maybe treated as a string “<tt>foo"bar</tt>”, or as an error.
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For this, the reader need not recognize “<tt>\</tt>” for escaping, but should, in addition, recognize numbers if the language has appropriate datatypes.
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Note that with the exception of “<tt>()"</tt>” (“<tt>\</tt>” if escaping is supported) and whitespace there are no special characters. Anything else is allowed without quotes.
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<p>The reader should be able to read the following input</p>
testString: assert.deepEqual(parseSexpr(basicSExpr), basicSolution, "<code>parseSexpr('(data1 data2 data3)')</code> should return an array with 3 elements");