Reorganizing the code

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>

src/util/plugin_manager.h

@@ -0,0 +1,66 @@
+/*++
+Copyright (c) 2006 Microsoft Corporation
+
+Module Name:
+
+    plugin_manager.h
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Leonardo de Moura (leonardo) 2007-09-18.
+
+Revision History:
+
+--*/
+#ifndef _PLUGIN_MANAGER_H_
+#define _PLUGIN_MANAGER_H_
+
+#include"util.h"
+
+template<typename Plugin>
+class plugin_manager {
+    ptr_vector<Plugin>   m_fid2plugins;
+    ptr_vector<Plugin>   m_plugins;
+public:
+    ~plugin_manager() {
+        std::for_each(m_plugins.begin(), m_plugins.end(), delete_proc<Plugin>());
+    }
+
+    /**
+       \brief Release ownership of the plugins.
+    */
+    void release() {
+        m_fid2plugins.reset();
+        m_plugins.reset();
+    }
+    
+    void register_plugin(Plugin * p) {
+        SASSERT(p);
+        family_id fid = p->get_family_id();
+        SASSERT(m_fid2plugins.get(fid, 0) == 0);
+        m_fid2plugins.setx(fid, p, 0);
+        m_plugins.push_back(p);
+    }
+    
+    Plugin * get_plugin(family_id fid) const {
+        if (fid == null_family_id) {
+            return 0;
+        }
+        return m_fid2plugins.get(fid, 0);
+    }
+
+    typename ptr_vector<Plugin>::const_iterator begin() const { 
+        return m_plugins.begin(); 
+    }
+
+    typename ptr_vector<Plugin>::const_iterator end() const { 
+        return m_plugins.end(); 
+    }
+};
+
+#endif /* _PLUGIN_MANAGER_H_ */
+

src/util/smt2_util.cpp

@@ -0,0 +1,62 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    smt2_util.cpp
+
+Abstract:
+
+    Goodies for SMT2 standard
+
+Author:
+
+    Leonardo (leonardo) 2012-10-20
+
+Notes:
+
+--*/
+#include"smt2_util.h"
+
+bool is_smt2_simple_symbol_char(char s) {
+    return 
+        ('0' <= s && s <= '9') ||
+        ('a' <= s && s <= 'z') ||
+        ('A' <= s && s <= 'Z') ||
+        s == '~' || s == '!' || s == '@' || s == '$' || s == '%' || s == '^' || s == '&' ||
+        s == '*' || s == '_' || s == '-' || s == '+' || s == '=' || s == '<' || s == '>' ||
+        s == '.' || s == '?' || s == '/';
+}
+
+bool is_smt2_quoted_symbol(char const * s) {
+    if (s == 0)
+        return false;
+    if ('0' <= s[0] && s[0] <= '9')
+        return true;
+    unsigned len = static_cast<unsigned>(strlen(s));
+    for (unsigned i = 0; i < len; i++)
+        if (!is_smt2_simple_symbol_char(s[i]))
+            return true;
+    return false;
+}
+
+bool is_smt2_quoted_symbol(symbol const & s) {
+    if (s.is_numerical())
+        return false;
+    return is_smt2_quoted_symbol(s.bare_str());
+}
+
+std::string mk_smt2_quoted_symbol(symbol const & s) {
+    SASSERT(is_smt2_quoted_symbol(s));
+    string_buffer<> buffer;
+    buffer.append('|');
+    char const * str = s.bare_str();
+    while (*str) {
+        if (*str == '|' || *str == '\\')
+            buffer.append('\\');
+        buffer.append(*str);
+        str++;
+    }
+    buffer.append('|');
+    return std::string(buffer.c_str());
+}

src/util/smt2_util.h

@@ -0,0 +1,29 @@
+/*++
+Copyright (c) 2011 Microsoft Corporation
+
+Module Name:
+
+    smt2_util.h
+
+Abstract:
+
+    Goodies for SMT2 standard
+
+Author:
+
+    Leonardo (leonardo) 2012-10-20
+
+Notes:
+
+--*/
+#ifndef _SMT2_UTIL_H_
+#define _SMT2_UTIL_H_
+
+#include"symbol.h"
+
+bool is_smt2_simple_symbol_char(char c);
+bool is_smt2_quoted_symbol(char const * s);
+bool is_smt2_quoted_symbol(symbol const & s);
+std::string mk_smt2_quoted_symbol(symbol const & s);
+
+#endif