+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
#include <eval/eval_context.h>
#include <eval/parser.h>
#include <exceptions/exceptions.h>
#include <fstream>
EvalContext::EvalContext()
- : trace_scanning (false), trace_parsing (false)
+ : trace_scanning_(false), trace_parsing_(false)
{
}
EvalContext::parseFile(const std::string &filename)
{
file = filename;
- scan_begin();
+ scanBegin();
isc::eval::EvalParser parser(*this);
- parser.set_debug_level(trace_parsing);
+ parser.set_debug_level(trace_parsing_);
int res = parser.parse();
- scan_end();
+ scanEnd();
return res;
}
+// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
#ifndef EVAL_CONTEXT_H
#define EVAL_CONTEXT_H
-# include <string>
-# include <map>
-# include "parser.h"
+#include <string>
+#include <map>
+#include <eval/parser.h>
// Tell Flex the lexer's prototype ...
-# define YY_DECL \
- isc::eval::EvalParser::symbol_type yylex (EvalContext& driver)
+#define YY_DECL isc::eval::EvalParser::symbol_type yylex (EvalContext& driver)
// ... and declare it for the parser's sake.
YY_DECL;
-// Conducting the whole scanning and parsing of Calc++.
+/// @brief Evaluation context, an interface to the expression evaluation.
class EvalContext
{
public:
- EvalContext ();
- virtual ~EvalContext ();
+ /// @brief Default constructor.
+ EvalContext();
+
+ /// @brief destructor
+ virtual ~EvalContext();
+
+ /// @brief Parsed expression (output tokens are stored here)
+ isc::dhcp::Expression expression;
- isc::dhcp::Expression expression;
+ /// @brief Method called before scanning starts.
+ void scanBegin();
- int result;
+ /// @brief Method called after the last tokens are scanned.
+ void scanEnd();
+
+ /// @brief Runs the parser on specified file.
+ ///
+ /// @param filename
+ /// Return 0 on success.
+ int parseFile(const std::string& filename);
- // Handling the scanner.
- void scan_begin ();
- void scan_end ();
- bool trace_scanning;
+ /// @brief Run the parser on the string specified.
+ ///
+ /// @param str string to be written
+ int parseString(const std::string& str);
- // Run the parser on file F.
- // Return 0 on success.
- int parseFile(const std::string& filename);
+ /// @brief The name of the file being parsed.
+ /// Used later to pass the file name to the location tracker.
+ std::string file;
- int parseString(const std::string& str);
+ /// @brief Error handler
+ ///
+ /// @param l location within the parsed file when experienced a problem.
+ /// @param what string explaining the nature of the error.
+ void error(const isc::eval::location& l, const std::string& what);
- // The name of the file being parsed.
- // Used later to pass the file name to the location tracker.
+ /// @brief Error handler
+ ///
+ /// This is a simplified error reporting tool for possible future
+ /// cases when the EvalParser is not able to handle the packet.
+ void error(const std::string& what);
- std::string file;
- // Whether parser traces should be generated.
- bool trace_parsing;
+ private:
+ /// @brief Flag determining scanner debugging.
+ bool trace_scanning_;
- // Error handling.
- void error (const isc::eval::location& l, const std::string& m);
- void error (const std::string& m);
+ /// @brief Flag determing parser debugging.
+ bool trace_parsing_;
+
};
#endif // ! EVALCONTEXT_HH
void
-EvalContext::scan_begin()
+EvalContext::scanBegin()
{
- yy_flex_debug = trace_scanning;
+ yy_flex_debug = trace_scanning_;
if (file.empty () || file == "-") {
yyin = stdin;
}
else if (!(yyin = fopen(file.c_str (), "r"))) {
- error ("cannot open " + file + ": " + strerror(errno));
- exit (EXIT_FAILURE);
+ error("cannot open " + file + ": " + strerror(errno));
+ exit(EXIT_FAILURE);
}
}
void
-EvalContext::scan_end()
+EvalContext::scanEnd()
{
- fclose (yyin);
+ fclose(yyin);
}
%%
void
-EvalContext::scan_begin()
+EvalContext::scanBegin()
{
- yy_flex_debug = trace_scanning;
+ yy_flex_debug = trace_scanning_;
if (file.empty () || file == "-") {
yyin = stdin;
}
else if (!(yyin = fopen(file.c_str (), "r"))) {
- error ("cannot open " + file + ": " + strerror(errno));
- exit (EXIT_FAILURE);
+ error("cannot open " + file + ": " + strerror(errno));
+ exit(EXIT_FAILURE);
}
}
void
-EvalContext::scan_end()
+EvalContext::scanEnd()
{
- fclose (yyin);
+ fclose(yyin);
}
# include "position.hh"
-#line 7 "parser.yy" // location.cc:337
+#line 21 "parser.yy" // location.cc:337
namespace isc { namespace eval {
#line 46 "location.hh" // location.cc:337
/// Abstract a location.
return ostr;
}
-#line 7 "parser.yy" // location.cc:337
+#line 21 "parser.yy" // location.cc:337
} } // isc::eval
#line 192 "location.hh" // location.cc:337
#endif // !YY_YY_LOCATION_HH_INCLUDED
#line 51 "parser.cc" // lalr1.cc:412
// Unqualified %code blocks.
-#line 28 "parser.yy" // lalr1.cc:413
+#line 42 "parser.yy" // lalr1.cc:413
# include "eval_context.h"
#define YYERROR goto yyerrorlab
#define YYRECOVERING() (!!yyerrstatus_)
-#line 7 "parser.yy" // lalr1.cc:479
+#line 21 "parser.yy" // lalr1.cc:479
namespace isc { namespace eval {
#line 143 "parser.cc" // lalr1.cc:479
{
case 8: // "constant string"
-#line 42 "parser.yy" // lalr1.cc:636
+#line 56 "parser.yy" // lalr1.cc:636
{ yyoutput << yysym.value.template as< std::string > (); }
#line 326 "parser.cc" // lalr1.cc:636
break;
case 9: // "option code"
-#line 42 "parser.yy" // lalr1.cc:636
+#line 56 "parser.yy" // lalr1.cc:636
{ yyoutput << yysym.value.template as< int > (); }
#line 333 "parser.cc" // lalr1.cc:636
break;
// User initialization code.
- #line 21 "parser.yy" // lalr1.cc:745
+ #line 35 "parser.yy" // lalr1.cc:745
{
// Initialize the initial location.
yyla.location.begin.filename = yyla.location.end.filename = &ctx.file;
switch (yyn)
{
case 2:
-#line 50 "parser.yy" // lalr1.cc:859
+#line 64 "parser.yy" // lalr1.cc:859
{
TokenPtr eq(new TokenEqual());
ctx.expression.push_back(eq);
break;
case 4:
-#line 57 "parser.yy" // lalr1.cc:859
+#line 71 "parser.yy" // lalr1.cc:859
{
TokenPtr str(new TokenString(yystack_[0].value.as< std::string > ()));
ctx.expression.push_back(str);
break;
case 5:
-#line 61 "parser.yy" // lalr1.cc:859
+#line 75 "parser.yy" // lalr1.cc:859
{
TokenPtr opt(new TokenOption(yystack_[0].value.as< int > ()));
ctx.expression.push_back(opt);
break;
case 6:
-#line 65 "parser.yy" // lalr1.cc:859
+#line 79 "parser.yy" // lalr1.cc:859
{
/* push back TokenSubstring */
}
const unsigned char
EvalParser::yyrline_[] =
{
- 0, 50, 50, 54, 57, 61, 65
+ 0, 64, 64, 68, 71, 75, 79
};
// Print the state stack on the debug stream.
#endif // YYDEBUG
-#line 7 "parser.yy" // lalr1.cc:1167
+#line 21 "parser.yy" // lalr1.cc:1167
} } // isc::eval
#line 972 "parser.cc" // lalr1.cc:1167
-#line 69 "parser.yy" // lalr1.cc:1168
+#line 83 "parser.yy" // lalr1.cc:1168
void
isc::eval::EvalParser::error(const location_type& l,
#ifndef YY_YY_PARSER_H_INCLUDED
# define YY_YY_PARSER_H_INCLUDED
// // "%code requires" blocks.
-#line 10 "parser.yy" // lalr1.cc:392
+#line 24 "parser.yy" // lalr1.cc:392
#include <string>
#include <eval/token.h>
# define YYDEBUG 1
#endif
-#line 7 "parser.yy" // lalr1.cc:392
+#line 21 "parser.yy" // lalr1.cc:392
namespace isc { namespace eval {
#line 129 "parser.h" // lalr1.cc:392
}
-#line 7 "parser.yy" // lalr1.cc:392
+#line 21 "parser.yy" // lalr1.cc:392
} } // isc::eval
#line 997 "parser.h" // lalr1.cc:392
+/* Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+
+ Permission to use, copy, modify, and/or distribute this software for any
+ purpose with or without fee is hereby granted, provided that the above
+ copyright notice and this permission notice appear in all copies.
+
+ THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ PERFORMANCE OF THIS SOFTWARE. */
+
%skeleton "lalr1.cc" /* -*- C++ -*- */
%require "3.0.0"
%defines
# endif
# endif
-#line 7 "parser.yy" // location.cc:337
+#line 21 "parser.yy" // location.cc:337
namespace isc { namespace eval {
#line 56 "position.hh" // location.cc:337
/// Abstract a position.
return ostr << pos.line << '.' << pos.column;
}
-#line 7 "parser.yy" // location.cc:337
+#line 21 "parser.yy" // location.cc:337
} } // isc::eval
#line 180 "position.hh" // location.cc:337
#endif // !YY_YY_POSITION_HH_INCLUDED
# include <vector>
-#line 7 "parser.yy" // stack.hh:151
+#line 21 "parser.yy" // stack.hh:151
namespace isc { namespace eval {
#line 46 "stack.hh" // stack.hh:151
template <class T, class S = std::vector<T> >
unsigned int range_;
};
-#line 7 "parser.yy" // stack.hh:151
+#line 21 "parser.yy" // stack.hh:151
} } // isc::eval
#line 156 "stack.hh" // stack.hh:151
projects / thirdparty / kea.git / commitdiff
