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# File 'lib/oracle-sql-parser/grammar/expression/cursor.rb', line 32
def _nt_cursor_expression
start_index = index
if node_cache[:cursor_expression].has_key?(index)
cached = node_cache[:cursor_expression][index]
if cached
node_cache[:cursor_expression][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0, s0 = index, []
r1 = _nt_cursor_keyword
s0 << r1
if r1
r3 = _nt_space
if r3
r2 = r3
else
r2 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r2
if r2
if (match_len = has_terminal?('(', false, index))
r4 = true
@index += match_len
else
terminal_parse_failure('\'(\'')
r4 = nil
end
s0 << r4
if r4
r6 = _nt_space
if r6
r5 = r6
else
r5 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r5
if r5
r7 = _nt_subquery
s0 << r7
if r7
r9 = _nt_space
if r9
r8 = r9
else
r8 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r8
if r8
if (match_len = has_terminal?(')', false, index))
r10 = true
@index += match_len
else
terminal_parse_failure('\')\'')
r10 = nil
end
s0 << r10
end
end
end
end
end
end
if s0.last
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
r0.extend(CursorExpression0)
r0.extend(CursorExpression1)
else
@index = i0
r0 = nil
end
node_cache[:cursor_expression][start_index] = r0
r0
end
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