reorganizing class hierarchy

git-svn-id: svn://ttmath.org/publicrep/morm/trunk@1075 e52654a7-88a9-db11-a3e9-0013d4bc506e

src/jsonexpression.cpp

@@ -0,0 +1,147 @@
+/*
+ * This file is a part of morm
+ * and is distributed under the 2-Clause BSD licence.
+ * Author: Tomasz Sowa <t.sowa@ttmath.org>
+ */
+
+/*
+ * Copyright (c) 2018, Tomasz Sowa
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "jsonexpression.h"
+#include "morm_types.h"
+
+
+
+namespace morm
+{
+
+
+void JSONExpression::before_generate_from_model()
+{
+	BaseExpression::before_generate_from_model();
+
+	if( work_mode == MORM_WORK_MODE_MODEL_FIELDS_VALUES )
+	{
+		(*out_stream) << "{";
+	}
+}
+
+
+void JSONExpression::after_generate_from_model()
+{
+	BaseExpression::after_generate_from_model();
+
+	if( work_mode == MORM_WORK_MODE_MODEL_FIELDS_VALUES )
+	{
+		(*out_stream) << "}";
+	}
+}
+
+
+
+void JSONExpression::field_before()
+{
+	BaseExpression::field_before();
+
+	if( !is_first_field )
+	{
+		(*out_stream) << ",";
+	}
+}
+
+
+
+void JSONExpression::before_field_name()
+{
+	(*out_stream) << "\"";
+}
+
+
+void JSONExpression::after_field_name()
+{
+	(*out_stream) << "\"";
+}
+
+
+void JSONExpression::before_field_value_string()
+{
+	(*out_stream) << "\"";
+}
+
+void JSONExpression::after_field_value_string()
+{
+	(*out_stream) << "\"";
+}
+
+
+void JSONExpression::before_field_value(const std::wstring &)
+{
+	before_field_value_string();
+}
+
+void JSONExpression::before_field_value(const std::string &)
+{
+	before_field_value_string();
+}
+
+void JSONExpression::after_field_value(const std::wstring &)
+{
+	after_field_value_string();
+}
+
+void JSONExpression::after_field_value(const std::string &)
+{
+	after_field_value_string();
+}
+
+
+void JSONExpression::put_name_value_separator()
+{
+	(*out_stream) << ':';
+}
+
+
+void JSONExpression::esc(char val, PT::TextStream & stream)
+{
+	switch( val )
+	{
+	case 0:		stream << '\\';	stream << '0';		break;	// may to skip this character is better?
+	case '\r':	stream << '\\';	stream << 'r';		break;
+	case '\n':	stream << '\\';	stream << 'n';		break;
+	case '\t':	stream << '\\';	stream << 't';		break;
+	case 0x08:	stream << '\\';	stream << 'b';		break;
+	case 0x0c:	stream << '\\';	stream << 'f';		break;
+	case '\\':	stream << '\\';	stream << '\\';		break;
+	case '"':	stream << '\\';	stream << '\"';		break;
+	default:
+		stream << val;
+	}
+}
+
+
+}