615 lines
21 KiB
C++
615 lines
21 KiB
C++
// Copyright 2004-9 Trustees of Indiana University
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// read_graphviz_spirit.hpp -
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// Initialize a model of the BGL's MutableGraph concept and an associated
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// collection of property maps using a graph expressed in the GraphViz
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// DOT Language.
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//
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// Based on the grammar found at:
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// http://www.graphviz.org/cvs/doc/info/lang.html
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//
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// See documentation for this code at:
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// http://www.boost.org/libs/graph/doc/read-graphviz.html
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//
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// Author: Ronald Garcia
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//
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#ifndef BOOST_READ_GRAPHVIZ_SPIRIT_HPP
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#define BOOST_READ_GRAPHVIZ_SPIRIT_HPP
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// Phoenix/Spirit set these limits to 3, but I need more.
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#define PHOENIX_LIMIT 6
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#define BOOST_SPIRIT_CLOSURE_LIMIT 6
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#include <boost/spirit/include/classic_multi_pass.hpp>
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#include <boost/spirit/include/classic_core.hpp>
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#include <boost/spirit/include/classic_confix.hpp>
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#include <boost/spirit/include/classic_distinct.hpp>
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#include <boost/spirit/include/classic_lists.hpp>
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#include <boost/spirit/include/classic_escape_char.hpp>
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#include <boost/spirit/include/classic_attribute.hpp>
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#include <boost/spirit/include/classic_dynamic.hpp>
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#include <boost/spirit/include/classic_actor.hpp>
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#include <boost/spirit/include/classic_closure.hpp>
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#include <boost/spirit/include/phoenix1.hpp>
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#include <boost/spirit/include/phoenix1_binders.hpp>
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#include <boost/ref.hpp>
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#include <boost/function/function2.hpp>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/property_map/dynamic_property_map.hpp>
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#include <boost/graph/graph_traits.hpp>
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#include <boost/detail/workaround.hpp>
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#include <algorithm>
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#include <exception> // for std::exception
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#include <string>
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#include <vector>
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#include <set>
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#include <utility>
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#include <map>
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#include <boost/graph/graphviz.hpp>
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#include <boost/throw_exception.hpp>
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namespace phoenix {
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// Workaround: std::map::operator[] uses a different return type than all
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// other standard containers. Phoenix doesn't account for that.
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template <typename TK, typename T0, typename T1>
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struct binary_operator<index_op, std::map<TK,T0>, T1>
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{
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typedef typename std::map<TK,T0>::mapped_type& result_type;
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static result_type eval(std::map<TK,T0>& container, T1 const& index)
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{ return container[index]; }
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};
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} // namespace phoenix
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namespace boost {
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namespace detail {
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namespace graph {
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/////////////////////////////////////////////////////////////////////////////
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// Application-specific type definitions
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/////////////////////////////////////////////////////////////////////////////
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typedef std::set<edge_t> edges_t;
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typedef std::set<node_t> nodes_t;
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typedef std::set<id_t> ids_t;
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typedef std::map<edge_t,ids_t> edge_map_t;
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typedef std::map<node_t,ids_t> node_map_t;
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typedef std::map<id_t,id_t> props_t;
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typedef std::map<id_t,props_t> subgraph_props_t;
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typedef boost::function2<void, id_t const&, id_t const&> actor_t;
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typedef std::vector<edge_t> edge_stack_t;
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typedef std::map<id_t,nodes_t> subgraph_nodes_t;
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typedef std::map<id_t,edges_t> subgraph_edges_t;
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/////////////////////////////////////////////////////////////////////////////
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// Stack frames used by semantic actions
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/////////////////////////////////////////////////////////////////////////////
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struct id_closure : boost::spirit::classic::closure<id_closure, node_t> {
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member1 name;
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};
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struct node_id_closure : boost::spirit::classic::closure<node_id_closure, node_t> {
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member1 name;
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};
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struct attr_list_closure : boost::spirit::classic::closure<attr_list_closure, actor_t> {
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member1 prop_actor;
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};
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struct property_closure : boost::spirit::classic::closure<property_closure, id_t, id_t> {
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member1 key;
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member2 value;
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};
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struct data_stmt_closure : boost::spirit::classic::closure<data_stmt_closure,
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nodes_t,nodes_t,edge_stack_t,bool,node_t> {
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member1 sources;
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member2 dests;
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member3 edge_stack;
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member4 saw_node;
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member5 active_node;
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};
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struct subgraph_closure : boost::spirit::classic::closure<subgraph_closure,
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nodes_t, edges_t, node_t> {
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member1 nodes;
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member2 edges;
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member3 name;
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};
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/////////////////////////////////////////////////////////////////////////////
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// Grammar and Actions for the DOT Language
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/////////////////////////////////////////////////////////////////////////////
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// Grammar for a dot file.
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struct dot_grammar : public boost::spirit::classic::grammar<dot_grammar> {
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mutate_graph& graph_;
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explicit dot_grammar(mutate_graph& graph) : graph_(graph) { }
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template <class ScannerT>
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struct definition {
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definition(dot_grammar const& self) : self(self), subgraph_depth(0),
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keyword_p("0-9a-zA-Z_") {
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using namespace boost::spirit::classic;
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using namespace phoenix;
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// RG - Future Work
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// - Handle multi-line strings using \ line continuation
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// - Make keywords case insensitive
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ID
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= ( lexeme_d[((alpha_p | ch_p('_')) >> *(alnum_p | ch_p('_')))]
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| real_p
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| lexeme_d[confix_p('"', *c_escape_ch_p, '"')]
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| comment_nest_p('<', '>')
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)[ID.name = construct_<std::string>(arg1,arg2)]
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;
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a_list
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= list_p( ID[(a_list.key = arg1),
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(a_list.value = "true")
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]
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>> !( ch_p('=')
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>> ID[a_list.value = arg1])
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[phoenix::bind(&definition::call_prop_actor)
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(var(*this),a_list.key,a_list.value)],!ch_p(','));
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attr_list = +(ch_p('[') >> !a_list >> ch_p(']'));
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// RG - disregard port id's for now.
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port_location
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= (ch_p(':') >> ID)
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| (ch_p(':') >> ch_p('(') >> ID >> ch_p(',') >> ID >> ch_p(')'))
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;
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port_angle = ch_p('@') >> ID;
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port
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= port_location >> (!port_angle)
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| port_angle >> (!port_location);
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node_id
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= ( ID[node_id.name = arg1] >> (!port) )
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[phoenix::bind(&definition::memoize_node)(var(*this))];
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graph_stmt
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= (ID[graph_stmt.key = arg1] >>
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ch_p('=') >>
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ID[graph_stmt.value = arg1])
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[phoenix::bind(&definition::call_graph_prop)
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(var(*this),graph_stmt.key,graph_stmt.value)]
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; // Graph property.
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attr_stmt
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= (as_lower_d[keyword_p("graph")]
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>> attr_list(actor_t(phoenix::bind(&definition::default_graph_prop)
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(var(*this),arg1,arg2))))
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| (as_lower_d[keyword_p("node")]
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>> attr_list(actor_t(phoenix::bind(&definition::default_node_prop)
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(var(*this),arg1,arg2))))
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| (as_lower_d[keyword_p("edge")]
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>> attr_list(actor_t(phoenix::bind(&definition::default_edge_prop)
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(var(*this),arg1,arg2))))
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;
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// edge_head is set depending on the graph type (directed/undirected)
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edgeop = ch_p('-') >> ch_p(boost::ref(edge_head));
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edgeRHS
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= +( edgeop[(data_stmt.sources = data_stmt.dests),
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(data_stmt.dests = construct_<nodes_t>())]
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>> ( subgraph[data_stmt.dests = arg1]
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| node_id[phoenix::bind(&definition::insert_node)
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(var(*this),data_stmt.dests,arg1)]
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)
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[phoenix::bind(&definition::activate_edge)
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(var(*this),data_stmt.sources,data_stmt.dests,
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var(edges), var(default_edge_props))]
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);
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// To avoid backtracking, edge, node, and subgraph statements are
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// processed as one nonterminal.
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data_stmt
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= ( subgraph[(data_stmt.dests = arg1),// will get moved in rhs
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(data_stmt.saw_node = false)]
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| node_id[(phoenix::bind(&definition::insert_node)
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(var(*this),data_stmt.dests,arg1)),
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(data_stmt.saw_node = true),
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#ifdef BOOST_GRAPH_DEBUG
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(std::cout << val("AcTive Node: ") << arg1 << "\n"),
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#endif // BOOST_GRAPH_DEBUG
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(data_stmt.active_node = arg1)]
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) >> if_p(edgeRHS)[
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!attr_list(
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actor_t(phoenix::bind(&definition::edge_prop)
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(var(*this),arg1,arg2)))
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].else_p[
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if_p(data_stmt.saw_node)[
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!attr_list(
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actor_t(phoenix::bind(&definition::node_prop)
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(var(*this),arg1,arg2)))
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] // otherwise it's a subgraph, nothing more to do.
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];
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stmt
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= graph_stmt
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| attr_stmt
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| data_stmt
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;
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stmt_list = *( stmt >> !ch_p(';') );
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subgraph
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= !( as_lower_d[keyword_p("subgraph")]
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>> (!ID[(subgraph.name = arg1),
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(subgraph.nodes = (var(subgraph_nodes))[arg1]),
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(subgraph.edges = (var(subgraph_edges))[arg1])])
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)
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>> ch_p('{')[++var(subgraph_depth)]
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>> stmt_list
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>> ch_p('}')[--var(subgraph_depth)]
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[(var(subgraph_nodes))[subgraph.name] = subgraph.nodes]
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[(var(subgraph_edges))[subgraph.name] = subgraph.edges]
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| as_lower_d[keyword_p("subgraph")]
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>> ID[(subgraph.nodes = (var(subgraph_nodes))[arg1]),
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(subgraph.edges = (var(subgraph_edges))[arg1])]
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;
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the_grammar
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= (!as_lower_d[keyword_p("strict")])
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>> ( as_lower_d[keyword_p("graph")][
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(var(edge_head) = '-'),
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(phoenix::bind(&definition::check_undirected)(var(*this)))]
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| as_lower_d[keyword_p("digraph")][
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(var(edge_head) = '>'),
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(phoenix::bind(&definition::check_directed)(var(*this)))]
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)
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>> (!ID) >> ch_p('{') >> stmt_list >> ch_p('}');
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} // definition()
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typedef boost::spirit::classic::rule<ScannerT> rule_t;
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rule_t const& start() const { return the_grammar; }
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//
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// Semantic actions
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//
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void check_undirected() {
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if(self.graph_.is_directed())
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boost::throw_exception(boost::undirected_graph_error());
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}
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void check_directed() {
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if(!self.graph_.is_directed())
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boost::throw_exception(boost::directed_graph_error());
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}
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void memoize_node() {
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id_t const& node = node_id.name();
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props_t& node_props = default_node_props;
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if(nodes.find(node) == nodes.end()) {
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nodes.insert(node);
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self.graph_.do_add_vertex(node);
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node_map.insert(std::make_pair(node,ids_t()));
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#ifdef BOOST_GRAPH_DEBUG
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std::cout << "Add new node " << node << std::endl;
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#endif // BOOST_GRAPH_DEBUG
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// Set the default properties for this edge
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// RG: Here I would actually set the properties
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for(props_t::iterator i = node_props.begin();
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i != node_props.end(); ++i) {
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set_node_property(node,i->first,i->second);
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}
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if(subgraph_depth > 0) {
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subgraph.nodes().insert(node);
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// Set the subgraph's default properties as well
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props_t& props = subgraph_node_props[subgraph.name()];
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for(props_t::iterator i = props.begin(); i != props.end(); ++i) {
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set_node_property(node,i->first,i->second);
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}
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}
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} else {
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#ifdef BOOST_GRAPH_DEBUG
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std::cout << "See node " << node << std::endl;
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#endif // BOOST_GRAPH_DEBUG
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}
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}
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void activate_edge(nodes_t& sources, nodes_t& dests, edges_t& edges,
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props_t& edge_props) {
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edge_stack_t& edge_stack = data_stmt.edge_stack();
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for(nodes_t::iterator i = sources.begin(); i != sources.end(); ++i) {
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for(nodes_t::iterator j = dests.begin(); j != dests.end(); ++j) {
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// Create the edge and push onto the edge stack.
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#ifdef BOOST_GRAPH_DEBUG
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std::cout << "Edge " << *i << " to " << *j << std::endl;
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#endif // BOOST_GRAPH_DEBUG
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edge_t edge = edge_t::new_edge();
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edge_stack.push_back(edge);
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edges.insert(edge);
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edge_map.insert(std::make_pair(edge,ids_t()));
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// Add the real edge.
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self.graph_.do_add_edge(edge, *i, *j);
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// Set the default properties for this edge
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for(props_t::iterator k = edge_props.begin();
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k != edge_props.end(); ++k) {
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set_edge_property(edge,k->first,k->second);
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}
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if(subgraph_depth > 0) {
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subgraph.edges().insert(edge);
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// Set the subgraph's default properties as well
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props_t& props = subgraph_edge_props[subgraph.name()];
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for(props_t::iterator k = props.begin(); k != props.end(); ++k) {
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set_edge_property(edge,k->first,k->second);
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}
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}
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}
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}
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}
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// node_prop - Assign the property for the current active node.
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void node_prop(id_t const& key, id_t const& value) {
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node_t& active_object = data_stmt.active_node();
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set_node_property(active_object, key, value);
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}
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// edge_prop - Assign the property for the current active edges.
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void edge_prop(id_t const& key, id_t const& value) {
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edge_stack_t const& active_edges_ = data_stmt.edge_stack();
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for (edge_stack_t::const_iterator i = active_edges_.begin();
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i != active_edges_.end(); ++i) {
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set_edge_property(*i,key,value);
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}
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}
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// default_graph_prop - Store as a graph property.
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void default_graph_prop(id_t const& key, id_t const& value) {
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#ifdef BOOST_GRAPH_DEBUG
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std::cout << key << " = " << value << std::endl;
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#endif // BOOST_GRAPH_DEBUG
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self.graph_.set_graph_property(key, value);
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}
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// default_node_prop - declare default properties for any future new nodes
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void default_node_prop(id_t const& key, id_t const& value) {
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nodes_t& nodes_ =
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subgraph_depth == 0 ? nodes : subgraph.nodes();
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props_t& node_props_ =
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subgraph_depth == 0 ?
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default_node_props :
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subgraph_node_props[subgraph.name()];
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// add this to the selected list of default node properties.
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node_props_[key] = value;
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// for each node, set its property to default-constructed value
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// if it hasn't been set already.
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// set the dynamic property map value
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for(nodes_t::iterator i = nodes_.begin(); i != nodes_.end(); ++i)
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if(node_map[*i].find(key) == node_map[*i].end()) {
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set_node_property(*i,key,id_t());
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}
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}
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// default_edge_prop - declare default properties for any future new edges
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void default_edge_prop(id_t const& key, id_t const& value) {
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edges_t& edges_ =
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subgraph_depth == 0 ? edges : subgraph.edges();
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props_t& edge_props_ =
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subgraph_depth == 0 ?
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default_edge_props :
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subgraph_edge_props[subgraph.name()];
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// add this to the list of default edge properties.
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edge_props_[key] = value;
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// for each edge, set its property to be empty string
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// set the dynamic property map value
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for(edges_t::iterator i = edges_.begin(); i != edges_.end(); ++i)
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if(edge_map[*i].find(key) == edge_map[*i].end())
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set_edge_property(*i,key,id_t());
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}
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// helper function
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void insert_node(nodes_t& nodes, id_t const& name) {
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nodes.insert(name);
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}
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void call_prop_actor(std::string const& lhs, std::string const& rhs) {
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actor_t& actor = attr_list.prop_actor();
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// If first and last characters of the rhs are double-quotes,
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// remove them.
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if (!rhs.empty() && rhs[0] == '"' && rhs[rhs.size() - 1] == '"')
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actor(lhs, rhs.substr(1, rhs.size()-2));
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else
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actor(lhs,rhs);
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}
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void call_graph_prop(std::string const& lhs, std::string const& rhs) {
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// If first and last characters of the rhs are double-quotes,
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// remove them.
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if (!rhs.empty() && rhs[0] == '"' && rhs[rhs.size() - 1] == '"')
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this->default_graph_prop(lhs, rhs.substr(1, rhs.size()-2));
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else
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this->default_graph_prop(lhs,rhs);
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}
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void set_node_property(node_t const& node, id_t const& key,
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id_t const& value) {
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// Add the property key to the "set" table to avoid default overwrite
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node_map[node].insert(key);
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// Set the user's property map
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self.graph_.set_node_property(key, node, value);
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#ifdef BOOST_GRAPH_DEBUG
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// Tell the world
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std::cout << node << ": " << key << " = " << value << std::endl;
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#endif // BOOST_GRAPH_DEBUG
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}
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void set_edge_property(edge_t const& edge, id_t const& key,
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id_t const& value) {
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// Add the property key to the "set" table to avoid default overwrite
|
|
edge_map[edge].insert(key);
|
|
// Set the user's property map
|
|
self.graph_.set_edge_property(key, edge, value);
|
|
#ifdef BOOST_GRAPH_DEBUG
|
|
// Tell the world
|
|
#if 0 // RG - edge representation changed,
|
|
std::cout << "(" << edge.first << "," << edge.second << "): "
|
|
#else
|
|
std::cout << "an edge: "
|
|
#endif // 0
|
|
<< key << " = " << value << std::endl;
|
|
#endif // BOOST_GRAPH_DEBUG
|
|
}
|
|
|
|
// Variables explicitly initialized
|
|
dot_grammar const& self;
|
|
// if subgraph_depth > 0, then we're processing a subgraph.
|
|
int subgraph_depth;
|
|
|
|
// Keywords;
|
|
const boost::spirit::classic::distinct_parser<> keyword_p;
|
|
//
|
|
// rules that make up the grammar
|
|
//
|
|
boost::spirit::classic::rule<ScannerT,id_closure::context_t> ID;
|
|
boost::spirit::classic::rule<ScannerT,property_closure::context_t> a_list;
|
|
boost::spirit::classic::rule<ScannerT,attr_list_closure::context_t> attr_list;
|
|
rule_t port_location;
|
|
rule_t port_angle;
|
|
rule_t port;
|
|
boost::spirit::classic::rule<ScannerT,node_id_closure::context_t> node_id;
|
|
boost::spirit::classic::rule<ScannerT,property_closure::context_t> graph_stmt;
|
|
rule_t attr_stmt;
|
|
boost::spirit::classic::rule<ScannerT,data_stmt_closure::context_t> data_stmt;
|
|
boost::spirit::classic::rule<ScannerT,subgraph_closure::context_t> subgraph;
|
|
rule_t edgeop;
|
|
rule_t edgeRHS;
|
|
rule_t stmt;
|
|
rule_t stmt_list;
|
|
rule_t the_grammar;
|
|
|
|
|
|
// The grammar uses edge_head to dynamically set the syntax for edges
|
|
// directed graphs: edge_head = '>', and so edgeop = "->"
|
|
// undirected graphs: edge_head = '-', and so edgeop = "--"
|
|
char edge_head;
|
|
|
|
|
|
//
|
|
// Support data structures
|
|
//
|
|
|
|
nodes_t nodes; // list of node names seen
|
|
edges_t edges; // list of edges seen
|
|
node_map_t node_map; // remember the properties set for each node
|
|
edge_map_t edge_map; // remember the properties set for each edge
|
|
|
|
subgraph_nodes_t subgraph_nodes; // per-subgraph lists of nodes
|
|
subgraph_edges_t subgraph_edges; // per-subgraph lists of edges
|
|
|
|
props_t default_node_props; // global default node properties
|
|
props_t default_edge_props; // global default edge properties
|
|
subgraph_props_t subgraph_node_props; // per-subgraph default node properties
|
|
subgraph_props_t subgraph_edge_props; // per-subgraph default edge properties
|
|
}; // struct definition
|
|
}; // struct dot_grammar
|
|
|
|
|
|
|
|
//
|
|
// dot_skipper - GraphViz whitespace and comment skipper
|
|
//
|
|
struct dot_skipper : public boost::spirit::classic::grammar<dot_skipper>
|
|
{
|
|
dot_skipper() {}
|
|
|
|
template <typename ScannerT>
|
|
struct definition
|
|
{
|
|
definition(dot_skipper const& /*self*/) {
|
|
using namespace boost::spirit::classic;
|
|
using namespace phoenix;
|
|
// comment forms
|
|
skip = eol_p >> comment_p("#")
|
|
| space_p
|
|
| comment_p("//")
|
|
#if BOOST_WORKAROUND(BOOST_MSVC, <= 1400)
|
|
| confix_p(str_p("/*") ,*anychar_p, str_p("*/"))
|
|
#else
|
|
| confix_p("/*" ,*anychar_p, "*/")
|
|
#endif
|
|
;
|
|
|
|
#ifdef BOOST_SPIRIT_DEBUG
|
|
BOOST_SPIRIT_DEBUG_RULE(skip);
|
|
#endif
|
|
}
|
|
|
|
boost::spirit::classic::rule<ScannerT> skip;
|
|
boost::spirit::classic::rule<ScannerT> const&
|
|
start() const { return skip; }
|
|
}; // definition
|
|
}; // dot_skipper
|
|
|
|
} // namespace graph
|
|
} // namespace detail
|
|
|
|
template <typename MultiPassIterator, typename MutableGraph>
|
|
bool read_graphviz_spirit(MultiPassIterator begin, MultiPassIterator end,
|
|
MutableGraph& graph, dynamic_properties& dp,
|
|
std::string const& node_id = "node_id") {
|
|
using namespace boost;
|
|
using namespace boost::spirit::classic;
|
|
|
|
typedef MultiPassIterator iterator_t;
|
|
typedef skip_parser_iteration_policy< boost::detail::graph::dot_skipper>
|
|
iter_policy_t;
|
|
typedef scanner_policies<iter_policy_t> scanner_policies_t;
|
|
typedef scanner<iterator_t, scanner_policies_t> scanner_t;
|
|
|
|
::boost::detail::graph::mutate_graph_impl<MutableGraph>
|
|
m_graph(graph, dp, node_id);
|
|
|
|
::boost::detail::graph::dot_grammar p(m_graph);
|
|
::boost::detail::graph::dot_skipper skip_p;
|
|
|
|
iter_policy_t iter_policy(skip_p);
|
|
scanner_policies_t policies(iter_policy);
|
|
|
|
scanner_t scan(begin, end, policies);
|
|
|
|
bool ok = p.parse(scan);
|
|
m_graph.finish_building_graph();
|
|
return ok;
|
|
}
|
|
|
|
} // namespace boost
|
|
|
|
#endif // BOOST_READ_GRAPHVIZ_SPIRIT_HPP
|