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<dt style="clear: both; float: left; font-weight: bold; width: 8em">Author</dt>
<dd style="margin-left: 8.5em">susumu.yata <susum****@gmail*****></dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">Date</dt>
<dd style="margin-left: 8.5em">2014-06-17 13:19:42 +0900 (Tue, 17 Jun 2014)</dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">New Revision</dt>
<dd style="margin-left: 8.5em"><a href="https://github.com/groonga/grnxx/commit/8254a1d107547bc47eeb64a276f7cb6412a553de">8254a1d107547bc47eeb64a276f7cb6412a553de</a></dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">Message</dt>
<dd style="margin-left: 8.5em"><pre style="border: 1px solid #aaa; font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace; line-height: 1.2; padding: 0.5em; width: auto">Rename create_*_node() to push_*().</pre></dd>
<dt style="clear: both; float: left; font-weight: bold; width: 8em">Modified files</dt>
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<li><a href="https://github.com/groonga/grnxx/commit/8254a1d107547bc47eeb64a276f7cb6412a553de#diff-0">new-interface/expression-builder.hpp</a></li>
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<pre style="border: 0; font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre"> Modified: new-interface/expression-builder.hpp (+20 -31)</span>
<span class="diff-header-mark" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">===================================================================</span>
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<td class="diff-content" style="border: 1px solid #aaa">
<pre style="border: 0; font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace; line-height: 1.2; margin: 0; padding: 0.5em; white-space: normal; width: auto"><span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -5,6 +5,7 @@</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> namespace grnxx {</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+// 後置記法(逆ポーランド記法)に基づいて式のオブジェクトを構築する.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> class ExpressionBuilder {</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> public:</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> ExpressionBuilder();</span>
<span class="diff-hunk-header" style="background-color: #eaf2f5; color: #999999; display: block; white-space: pre">@@ -15,67 +16,55 @@ <span class="diff-context" style="background-color: #ffffaa; color: #000000">class ExpressionBuilder {</span></span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 評価結果の型を取得する.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> virtual DataType data_type() const = 0;</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 定数に対応するノードを作成する.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // 定数をスタックに積む.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 成功すれば true を返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗したときは *error にその内容を格納し, false を返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> //</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 作成されたノードはスタックに積まれる.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- //</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗する状況としては,以下のようなものが挙げられる.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // - 指定された定数が不正である.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // - リソースを確保できない.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- virtual bool create_datum_node(Error *error,</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- const Datum &datum) = 0;</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ virtual bool push_datum(Error *error, const Datum &datum) = 0;</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // カラムに対応するノードを作成する.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // カラムをスタックに積む.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 成功すれば true を返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗したときは *error にその内容を格納し, false を返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> //</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // column_name に "_id" を指定すれば行 ID に対応するノード,</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // "_score" を指定すればスコアに対応するノードを作成する.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- //</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 作成されたノードはスタックに積まれる.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // column_name に "_id" を指定すれば行 ID に対応する擬似カラム,</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // "_score" を指定すればスコアに対応する擬似カラムをスタックに積む.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> //</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗する状況としては,以下のようなものが挙げられる.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // - 指定されたカラムが存在しない.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // - リソースを確保できない.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- virtual bool create_column_node(Error *error,</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- const char *column_name) = 0;</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ virtual bool push_column(Error *error, const char *column_name) = 0;</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 演算子に対応するノードを作成する.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // 演算子に対応する被演算子をスタックから降ろし,演算子をスタックに積む.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 成功すれば true を返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗したときは *error にその内容を格納し, false を返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> //</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // スタックに積まれているノードを降ろして被演算子とするため,</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 被演算子を作成した後に演算子を作成しなければならない.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // これは後置式(逆ポーランド記法)の考え方にもとづく.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- //</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 作成されたノードはスタックに積まれる.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // 被演算子はあらかじめスタックに積んでおく必要があり,</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // 被演算子の型や数に問題があるときは失敗する.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> //</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗する状況としては,以下のようなものが挙げられる.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // - 引数がスタックに存在しない.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // - 演算子と引数が対応していない.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // - 演算子が求める引数の型と実際の引数の型が異なる.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // - 演算子と被演算子が対応していない.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // - 被演算子がスタックに存在しない.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // - 演算子が求める引数の型と被演算子の型が異なる.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // - リソースを確保できない.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- virtual bool create_operator_node(</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- Error *error,</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- OperatorType operator_type) = 0;</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ virtual bool push_operator(Error *error, OperatorType operator_type) = 0;</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 保持しているノードやスタックを破棄する.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> virtual void clear();</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> </span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 構築された式を取得する.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // 構築中の式を完成させ,その所有権を取得する.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 成功すれば有効なオブジェクトへのポインタを返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗したときは *error にその内容を格納し, nullptr を返す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> //</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // 保持しているノードやスタックは破棄される.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- //</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // TODO: 内部で作成した Expression の所有権を返すだけにしたい.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // 所有権を返すため,保持しているノードやスタックは破棄する.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> //</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // 失敗する状況としては,以下のようなものが挙げられる.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // - ノードがひとつもない.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // - スタックに二つ以上のノードが存在する.</span>
<span class="diff-deleted" style="background-color: #ffaaaa; color: #000000; display: block; white-space: pre">- // - 式が完成していないことを示す.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // - スタックの要素数が一つでない.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // - 何も積まれていない.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // - 積まれたものが使われずに残っている.</span>
<span class="diff-added" style="background-color: #aaffaa; color: #000000; display: block; white-space: pre">+ // - 式が完成していないことを示す.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> // - リソースを確保できない.</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> virtual std::unique_ptr<Expression> release(Error *error);</span>
<span class="diff-not-changed" style="display: block; white-space: pre"> };</span>
</pre>
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