reorganizing class hierarchy

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

src/baseexpression.cpp

@@ -0,0 +1,293 @@
+/*
+ * 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 "baseexpression.h"
+#include "morm_types.h"
+#include "model.h"
+#include "utf8/utf8.h"
+
+
+namespace morm
+{
+
+
+BaseExpression::BaseExpression()
+{
+	out_stream = nullptr;
+	is_first_field = false;
+	work_mode = 0;
+}
+
+BaseExpression::~BaseExpression()
+{
+}
+
+
+void BaseExpression::set_work_mode(int work_mode)
+{
+	this->work_mode = work_mode;
+}
+
+
+void BaseExpression::generate_from_model(PT::TextStream & stream, Model & model)
+{
+	this->out_stream = &stream;
+
+	before_generate_from_model();
+	model.map_fields();
+	after_generate_from_model();
+}
+
+
+void BaseExpression::before_generate_from_model()
+{
+	is_first_field = true;
+}
+
+
+void BaseExpression::after_generate_from_model()
+{
+}
+
+
+bool BaseExpression::can_field_be_generated(bool insertable, bool updatable, bool is_primary_key)
+{
+	return true;
+}
+
+
+void BaseExpression::field_before()
+{
+	if( !is_first_field )
+	{
+		// put a separator between fields
+	}
+}
+
+
+void BaseExpression::field_after()
+{
+	is_first_field = false;
+}
+
+
+void BaseExpression::put_field_name(const wchar_t * field_name)
+{
+	before_field_name();
+	esc(field_name, *out_stream);
+	after_field_name();
+}
+
+
+void BaseExpression::before_field_name()
+{
+}
+
+
+void BaseExpression::after_field_name()
+{
+}
+
+
+void BaseExpression::before_field_value(const std::wstring &)
+{
+}
+
+
+void BaseExpression::before_field_value(const std::string &)
+{
+}
+
+
+void BaseExpression::after_field_value(const std::wstring &)
+{
+}
+
+
+void BaseExpression::after_field_value(const std::string &)
+{
+}
+
+
+void BaseExpression::put_name_value_separator()
+{
+	(*out_stream) << ',';
+}
+
+
+void BaseExpression::esc(char val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(unsigned char val, PT::TextStream & stream)
+{
+	esc(static_cast<char>(val), stream);
+}
+
+
+void BaseExpression::esc(const std::wstring & val, PT::TextStream & stream)
+{
+	char utf8_buf[10];
+
+	for(size_t i = 0 ; i < val.size() ; ++i)
+	{
+		size_t utf8_len = PT::IntToUTF8((int)val[i], utf8_buf, sizeof(utf8_buf));
+
+		for(size_t a = 0 ; a < utf8_len ; ++a)
+		{
+			esc(utf8_buf[a], stream);
+		}
+	}
+}
+
+
+void BaseExpression::esc(const wchar_t * val, PT::TextStream & stream)
+{
+	char utf8_buf[10];
+
+	for(size_t i = 0 ; val[i] != 0 ; ++i)
+	{
+		size_t utf8_len = PT::IntToUTF8((int)val[i], utf8_buf, sizeof(utf8_buf));
+
+		for(size_t a = 0 ; a < utf8_len ; ++a)
+		{
+			esc(utf8_buf[a], stream);
+		}
+	}
+}
+
+
+void BaseExpression::esc(const std::string & val, PT::TextStream & stream)
+{
+	for(size_t i = 0 ; i < val.size() ; ++i)
+	{
+		esc(val[i], stream);
+	}
+}
+
+
+void BaseExpression::esc(const char * val, PT::TextStream & stream)
+{
+	for(size_t i = 0 ; val[i] != 0 ; ++i)
+	{
+		esc(val[i], stream);
+	}
+}
+
+
+void BaseExpression::esc(bool val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(short val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(unsigned short val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(int val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(unsigned int val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(long val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(unsigned long val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(long long val, PT::TextStream & stream)
+{
+	// not implemented in PT::TextStream yet
+	//stream << val;
+}
+
+
+void BaseExpression::esc(unsigned long long val, PT::TextStream & stream)
+{
+	//stream << val;
+}
+
+
+void BaseExpression::esc(float val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(double val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+void BaseExpression::esc(long double val, PT::TextStream & stream)
+{
+	//stream << val;
+}
+
+
+void BaseExpression::esc(void* val, PT::TextStream & stream)
+{
+	stream << val;
+}
+
+
+
+
+}
+