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# File 'lib/bindy/language.rb', line 14
def _nt_expression
start_index = index
if node_cache[:expression].has_key?(index)
cached = node_cache[:expression][index]
if cached
node_cache[:expression][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0 = index
r1 = _nt_function
if r1
r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
r0 = r1
else
r2 = _nt_value
if r2
r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
r0 = r2
else
@index = i0
r0 = nil
end
end
node_cache[:expression][start_index] = r0
r0
end
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