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# testing mixture of strings and expressions
abc
${ 3}
a${
a${ 5 }
${ 3 }b
${ 1 }${ 2 }
abc ${ 1} ${ 2} def

# testing values that end with or contain "$"
$
\$
  $  
test$
$test
test$test
test$$$
test$$${ 34 }
test$$${ 34 }$$
test$${ 34 }
$${ 34 }
$$
test$$
test$$test
${ 34 }$${ 34 }

# literals
${1}
${-12}
${true}
${false}
${null}
${4.2}
${-21.3}
${4.}
${.21}
${3e-1}
${.2222222222}

# string literals with "
${"abc"}
${""}
${"a"}
${"         "}
${" some string ''' "}
${" with escaping \\"}
${" with escaping \""}
${" with escaping \"\\\""}
${" bad \ escaping"}
${" bad \' escaping"}

# string literals with '
${'abc'}
${''}
${'a'}
${'         '}
${' some string """ '}
${' with escaping \\'}
${' with escaping \''}
${' with escaping \'\\\''}
${' bad \ escaping'}
${' bad \" escaping'}

# identifiers
${abc}
${abc123}
${abc_123}
${bad*identifier}

# property accessors
${a .b .c}
${ abc . 'def.ghi' . ghi . "jkl \"" }

# array accessors
${ a[14] }
${ abc [def]}
${ def ["yesthisisallowed"]}

# mixed property/array accessors
${ a.b.c[d. e.  f]}
${ a[14].b[32].c[24][ 261] [24]}
${ a[b[c[d[e[f]]]].g] }

# mixed operators
${ 1 + 3 - 2 * 1 == 4}
${ 1 + 3 - 2 * 1 == 4 / 1.2}
${ 1 + 3 - 2 * 1 == 4 / 1.2 and abc}
${ 1 + 3 - 2 * 1 == 4 / 1.2 and abc or def or ghi and true}

# unary operators
${ --not abc.def }

# array accessors of non-integer types
${  a ["hello"]."12" [17.5] }

# making sure unicode escapes are not recognized
\u0040
"\u0040"

# relational operators
${ a > b }
${ a gt b }
${ a < b }
${ a lt b }
${ a >= b }
${ a ge b }
${ a <= b }
${ a le b }
${ a == b }
${ a eq b }
${ a != b }
${ a ne b }

# logical operators
${ a and b}
${ a && b}
${ a or b}
${ a || b}
${ !a }
${ not a }

# empty operator
${ empty "A"}
${ empty "" }
${ empty null }
${ empty false}
${ empty 0}
${ not empty 0}
${ not empty empty 0}
${ empty }

# functions
#${a()}
#${ a() }
#${a(b)}
#${ a(b) }
#${a(b,c)}
#${a(b,c,d)}
#${a:b(c)}
#${a:b(c,d)}
#${a:b(c,d,e)}
#${a(b).c}
#${a(b)[c]}
#${a[b()]}

# non-ascii input - the parser automatically translates the @@non-ascii
# into a UNICODE string with value \u1111
@@non-ascii
