Bisimilarity working?

src/rsprocess/grammar.lalrpop

@@ -37,7 +37,7 @@ match {
     "Print", "Save",
     "Dot", "GraphML", "Serialize",
     "Stats", "Target", "Run", "Loop", "Frequency", "LimitFrequency",
-    "FastFrequency", "Digraph",
+    "FastFrequency", "Digraph", "Bisimilarity",
     "Deserialize",
     "Hide", "Entities", "MaskEntities", "MaskContext",
     "Products", "MaskProducts", "Union", "MaskUnion",
@@ -523,6 +523,8 @@ Instruction: presets::Instruction = {
 	presets::Instruction::FastFrequency { experiment: p, so },
     "Digraph" ">" <gso: Separated_Or<GraphSaveOptions, "|">> =>
 	presets::Instruction::Digraph { gso },
+    "Bisimilarity" "(" <p: Path> ")" ">" <so: SaveOptions> =>
+	presets::Instruction::Bisimilarity { system_b: p, so },
 }
 
 pub Run: presets::Instructions = {
@@ -530,6 +532,10 @@ pub Run: presets::Instructions = {
 	Instructions { system: presets::System::RSsystem { sys },
 		       instructions: instr },
 
+    <sys: System> =>
+	Instructions { system: presets::System::RSsystem { sys },
+		       instructions: vec![] },
+
     "Deserialize" "(" <path: Path> ")"
     <instr: Separated_Or<Instruction, ",">> =>
 	Instructions { system: presets::System::Deserialize { path },

src/rsprocess/graph.rs

@@ -7,7 +7,8 @@ use super::support_structures::TransitionsIterator;
 use super::translator::{self, IdType};
 use std::rc::Rc;
 
-type RSgraph = Graph<RSsystem, RSlabel, Directed, u32>;
+
+pub type RSgraph = Graph<RSsystem, RSlabel, Directed, u32>;
 
 /// Creates a graph starting from a system as root node
 pub fn digraph(
@@ -364,7 +365,9 @@ impl GraphMapEdgesTy {
 // -----------------------------------------------------------------------------
 //                          Formatting Nodes & Edges
 // -----------------------------------------------------------------------------
-use petgraph::visit::{IntoNodeReferences, IntoEdgeReferences, EdgeRef};
+use petgraph::visit::{ IntoEdgeReferences,
+		       IntoNodeReferences,
+		       EdgeRef };
 
 type RSdotGraph = Graph<String, String, Directed, u32>;
 type RSformatNodeTy =

src/rsprocess/mod.rs

@@ -13,3 +13,4 @@ pub mod graph;
 pub mod rsdot;
 pub mod serialize;
 pub mod presets;
+pub mod bisimilarity;

src/rsprocess/presets.rs

@@ -98,6 +98,7 @@ pub enum Instruction {
     LimitFrequency { experiment: String, so: SaveOptions },
     FastFrequency { experiment: String, so: SaveOptions },
     Digraph { gso: Vec<GraphSaveOptions> },
+    Bisimilarity { system_b: String, so: SaveOptions }
 }
 
 pub enum System {
@@ -105,17 +106,6 @@ pub enum System {
     RSsystem { sys: RSsystem },
 }
 
-pub enum EvaluatedSystem {
-    Graph {
-        graph: Graph<RSsystem, RSlabel>,
-        translator: Translator,
-    },
-    System {
-        sys: RSsystem,
-        translator: Translator,
-    },
-}
-
 impl System {
     pub fn compute(
 	&self,
@@ -135,6 +125,30 @@ impl System {
     }
 }
 
+pub enum EvaluatedSystem {
+    Graph {
+        graph: graph::RSgraph,
+        translator: Translator,
+    },
+    System {
+        sys: RSsystem,
+        translator: Translator,
+    },
+}
+
+impl EvaluatedSystem {
+    pub fn get_translator(&mut self) -> &mut Translator {
+	match self {
+	    EvaluatedSystem::Graph { graph: _, translator } => {
+		translator
+	    },
+	    EvaluatedSystem::System { sys: _, translator } => {
+		translator
+	    }
+	}
+    }
+}
+
 pub struct Instructions {
     pub system: System,
     pub instructions: Vec<Instruction>,
@@ -474,17 +488,50 @@ pub fn fast_freq(
 /// Computes the LTS.
 /// equivalent to main_do(digraph, Arcs) or to main_do(advdigraph, Arcs)
 pub fn digraph(system: &mut EvaluatedSystem) -> Result<(), String> {
-    *system = if let EvaluatedSystem::System { sys, translator } = system {
-        EvaluatedSystem::Graph {
-            graph: graph::digraph(sys.clone())?,
-            translator: translator.to_owned(),
-        }
-    } else {
-        return Ok(());
-    };
+    if let EvaluatedSystem::System { sys, translator } = system {
+	*system =
+            EvaluatedSystem::Graph {
+		graph: graph::digraph(sys.clone())?,
+		translator: translator.to_owned(),
+            };
+    }
     Ok(())
 }
 
+pub fn bisimilar(
+    system_a: &mut EvaluatedSystem,
+    system_b: String
+) -> Result<String, String>
+{
+    digraph(system_a)?;
+
+    let system_b = read_file(system_a.get_translator(),
+				 system_b.to_string(),
+				 parser_instructions)?;
+
+    let system_b = match system_b.system {
+	System::RSsystem { sys } => sys,
+	_ => return Err("Not implemented yet".into())
+    };
+
+    let mut system_b = EvaluatedSystem::System { sys: system_b,
+						 translator: system_a.get_translator().clone() };
+
+    digraph(&mut system_b)?;
+
+    match (system_a, &system_b) {
+	(EvaluatedSystem::Graph { graph: a, translator: _ },
+	 EvaluatedSystem::Graph { graph: b, translator: _ }) => {
+	    // needed because rust cant see that we want to use &graph::RSgraph
+	    // and not &mut graph::RSgraph
+	    let a: &graph::RSgraph = a;
+	    let b: &graph::RSgraph = b;
+	    Ok(format!("{}", super::bisimilarity::bisimilarity_kanellakis_smolka(&a, &b)))
+	},
+	_ => { unreachable!() }
+    }
+}
+
 // -----------------------------------------------------------------------------
 //                              Output Functions
 // -----------------------------------------------------------------------------
@@ -555,7 +602,7 @@ use petgraph::visit::IntoNodeReferences;
 #[allow(clippy::type_complexity)]
 fn generate_node_color_fn<'a>(
     node_color: &'a graph::NodeColor,
-    original_graph: Rc<Graph<RSsystem, RSlabel>>,
+    original_graph: Rc<graph::RSgraph>,
     translator: Rc<Translator>,
 ) -> Box<dyn Fn(&Graph<String, String>, <&Graph<String, String, petgraph::Directed, u32> as IntoNodeReferences>::NodeRef) -> String + 'a> {
     Box::new(
@@ -708,8 +755,8 @@ pub fn serialize(system: &EvaluatedSystem, path: String) -> Result<(), String> {
 /// N.B. graph size in memory might be much larger after serialization and
 /// deserialization
 pub fn deserialize(
-    input_path: String
-) -> Result<(Graph<RSsystem, RSlabel>, Translator), String>
+    input_path: String,
+) -> Result<(graph::RSgraph, Translator), String>
 {
     // relative path
     let mut path = match env::current_dir() {
@@ -802,6 +849,9 @@ fn execute(
                 }
             }
         }
+	Instruction::Bisimilarity { system_b, so } => {
+	    save_options!(bisimilar(system, system_b)?, so);
+	}
     }
     Ok(())
 }

src/rsprocess/serialize.rs

@@ -5,22 +5,21 @@
 
 use std::io;
 
-use petgraph::Graph;
 use serde::{Deserialize, Serialize};
+use super::graph;
 
-use super::{structure::{RSlabel, RSsystem},
-	    translator::Translator};
+use super::translator::Translator;
 
 #[derive(Serialize, Deserialize)]
 struct GraphAndTranslator {
-    graph: Graph<RSsystem, RSlabel>,
+    graph: graph::RSgraph,
     translator: Translator
 }
 
 /// Serializer for graph and translator.
 pub fn ser<W>(
     writer: W,
-    graph: &Graph<RSsystem, RSlabel>,
+    graph: &graph::RSgraph,
     translator: &Translator
 ) -> Result<(), serde_cbor_2::Error>
 where
@@ -36,7 +35,7 @@ where
 /// Deserializer for file that contains graph and translator.
 pub fn de<R>(
     reader: R
-) -> Result<(Graph<RSsystem, RSlabel>, Translator), serde_cbor_2::Error>
+) -> Result<(graph::RSgraph, Translator), serde_cbor_2::Error>
 where
     R: io::Read,
 {

src/rsprocess/structure.rs

@@ -491,7 +491,7 @@ impl Default for RSsystem {
 // -----------------------------------------------------------------------------
 // RSlabel
 // -----------------------------------------------------------------------------
-#[derive(Clone, Debug, Serialize, Deserialize)]
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq, Eq, PartialOrd)]
 pub struct RSlabel {
     pub available_entities: RSset,
     pub context: RSset,