Code Duplication    Length = 8-8 lines in 2 locations

src/Definition/Symbol.php 2 locations

@@ 82-89 (lines=8) @@
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     * @param   array   $matches
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     * @return  mixed
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     */
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    public function null_denotation(array &$matches) {
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        if ($this->null_denotation === null) {
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            $m = $matches[0];
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            throw new ParserException("Syntax Error: $m");
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        }
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        $led = $this->null_denotation;
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        return $led($matches);
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    }
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    /**
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     * @param   \Closure    $led
@@ 106-113 (lines=8) @@
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     * @param   array   $matches
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     * @return  mixed
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     */
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    public function left_denotation($left, array &$matches) {
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        if ($this->left_denotation === null) {
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            $m = $matches[0];
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            throw new ParserException("Syntax Error: $m");
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        }
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        $led = $this->left_denotation;
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        return $led($left, $matches);
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    }
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}
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