figured out the output/input stuff better

src/block_compiler.rs

@@ -3,11 +3,11 @@
 // See README.md and COPYING for details.
 
 use std::cell::RefCell;
-use std::rc::Rc;
 use std::collections::HashMap;
+use std::rc::Rc;
 
-use synfx_dsp_jit::ASTNode;
 use crate::blocklang::*;
+use synfx_dsp_jit::ASTNode;
 
 #[derive(Debug)]
 struct JASTNode {
@@ -51,17 +51,18 @@ impl ASTNodeRef {
     pub fn walk_dump(&self, input: &str, output: &str, indent: usize) -> String {
         let indent_str = "   ".repeat(indent + 1);
 
-        let out_port =
+        let out_port = if output.len() > 0 { format!("(out: {})", output) } else { "".to_string() };
-            if output.len() > 0 { format!("(out: {})", output) }
+        let in_port = if input.len() > 0 { format!("(in: {})", input) } else { "".to_string() };
-            else { "".to_string() };
-        let in_port =
-            if input.len() > 0 { format!("(in: {})", input) }
-            else { "".to_string() };
 
         let mut s = format!(
             "{}{}#{}[{}] {}{}\n",
-            indent_str, self.0.borrow().id, self.0.borrow().typ,
+            indent_str,
-            self.0.borrow().lbl, out_port, in_port);
+            self.0.borrow().id,
+            self.0.borrow().typ,
+            self.0.borrow().lbl,
+            out_port,
+            in_port
+        );
 
         for (inp, out, n) in &self.0.borrow().nodes {
             s += &n.walk_dump(&inp, &out, indent + 1);
@@ -75,14 +76,75 @@ type BlkASTRef = Rc<RefCell<BlkASTNode>>;
 
 #[derive(Debug, Clone)]
 enum BlkASTNode {
-    Root { child: BlkASTRef },
+    Root {
-    Area { childs: Vec<BlkASTRef> },
+        child: BlkASTRef,
-    Set { var: String, expr: BlkASTRef },
+    },
-    Get { id: usize, use_count: usize, var: String, expr: BlkASTRef },
+    Area {
-    Node { id: usize, use_count: usize, typ: String, lbl: String, childs: Vec<BlkASTRef> },
+        childs: Vec<BlkASTRef>,
+    },
+    Set {
+        var: String,
+        expr: BlkASTRef,
+    },
+    Get {
+        id: usize,
+        use_count: usize,
+        var: String,
+    },
+    Node {
+        id: usize,
+        out: Option<String>,
+        use_count: usize,
+        typ: String,
+        lbl: String,
+        childs: Vec<(Option<String>, BlkASTRef)>,
+    },
 }
 
 impl BlkASTNode {
+    pub fn dump(&self, indent: usize, inp: Option<&str>) -> String {
+        let mut indent_str = "   ".repeat(indent + 1);
+
+        if let Some(inp) = inp {
+            indent_str += &format!("{}<= ", inp);
+        }
+
+        match self {
+            BlkASTNode::Root { child } => {
+                format!("{}* Root\n", indent_str) + &child.borrow().dump(indent + 1, None)
+            }
+            BlkASTNode::Area { childs } => {
+                let mut s = format!("{}* Area\n", indent_str);
+                for c in childs.iter() {
+                    s += &c.borrow().dump(indent + 1, None);
+                }
+                s
+            }
+            BlkASTNode::Set { var, expr } => {
+                format!("{}set '{}'=\n", indent_str, var) + &expr.borrow().dump(indent + 1, None)
+            }
+            BlkASTNode::Get { id, use_count, var } => {
+                format!("{}get '{}' (id={}, use={})\n", indent_str, var, id, use_count)
+            }
+            BlkASTNode::Node { id, out, use_count, typ, lbl, childs } => {
+                let lbl = if *typ == *lbl { "".to_string() } else { format!("[{}]", lbl) };
+
+                let mut s = if let Some(out) = out {
+                    format!(
+                        "{}{}{} (id={}/{}, use={})\n",
+                        indent_str, typ, lbl, id, out, use_count
+                    )
+                } else {
+                    format!("{}{}{} (id={}, use={})\n", indent_str, typ, lbl, id, use_count)
+                };
+                for (inp, c) in childs.iter() {
+                    s += &format!("{}", c.borrow().dump(indent + 1, inp.as_ref().map(|s| &s[..])));
+                }
+                s
+            }
+        }
+    }
+
     pub fn new_root(child: BlkASTRef) -> BlkASTRef {
         Rc::new(RefCell::new(BlkASTNode::Root { child }))
     }
@@ -95,11 +157,27 @@ impl BlkASTNode {
         Rc::new(RefCell::new(BlkASTNode::Set { var: var.to_string(), expr }))
     }
 
-    pub fn new_node(id: usize, typ: &str, lbl: &str, childs: Vec<BlkASTRef>) -> BlkASTRef {
+    pub fn new_get(id: usize, var: &str) -> BlkASTRef {
-        Rc::new(RefCell::new(BlkASTNode::Node { id, typ: typ.to_string(), lbl: lbl.to_string(), use_count: 1, childs }))
+        Rc::new(RefCell::new(BlkASTNode::Get { id, var: var.to_string(), use_count: 1 }))
-    }
     }
 
+    pub fn new_node(
+        id: usize,
+        out: Option<String>,
+        typ: &str,
+        lbl: &str,
+        childs: Vec<(Option<String>, BlkASTRef)>,
+    ) -> BlkASTRef {
+        Rc::new(RefCell::new(BlkASTNode::Node {
+            id,
+            out,
+            typ: typ.to_string(),
+            lbl: lbl.to_string(),
+            use_count: 1,
+            childs,
+        }))
+    }
+}
 
 #[derive(Debug, Clone)]
 pub enum BlkJITCompileError {
@@ -117,12 +195,14 @@ pub struct Block2JITCompiler {
 
 impl Block2JITCompiler {
     pub fn new() -> Self {
-        Self {
+        Self { id_node_map: HashMap::new() }
-            id_node_map: HashMap::new(),
-        }
     }
 
-    pub fn trans2bjit(&self, node: &ASTNodeRef) -> Result<BlkASTRef, BlkJITCompileError> {
+    pub fn trans2bjit(
+        &self,
+        node: &ASTNodeRef,
+        my_out: Option<String>,
+    ) -> Result<BlkASTRef, BlkJITCompileError> {
         // TODO: Deal with multiple outputs.
         // If we encounter a node with multiple outputs, assign each output
         // to a temporary variable and save that.
@@ -145,8 +225,9 @@ impl Block2JITCompiler {
 
         match &node.0.borrow().typ[..] {
             "<r>" => {
-                if let Some(first) = node.first_child_ref() {
+                if let Some((_in, out, first)) = node.first_child() {
-                    let child = self.trans2bjit(&first)?;
+                    let out = if out.len() > 0 { Some(out) } else { None };
+                    let child = self.trans2bjit(&first, out)?;
                     Ok(BlkASTNode::new_root(child))
                 } else {
                     Err(BlkJITCompileError::BadTree(node.clone()))
@@ -156,8 +237,9 @@ impl Block2JITCompiler {
                 let mut childs = vec![];
 
                 let mut i = 0;
-                while let Some((_in, _out, child)) = node.nth_child(i) {
+                while let Some((_in, out, child)) = node.nth_child(i) {
-                    let child = self.trans2bjit(&child)?;
+                    let out = if out.len() > 0 { Some(out) } else { None };
+                    let child = self.trans2bjit(&child, out)?;
                     childs.push(child);
                     i += 1;
                 }
@@ -168,39 +250,58 @@ impl Block2JITCompiler {
                 // TODO: handle results properly, like remembering the most recent result
                 // and append it to the end of the statements block. so that a temporary
                 // variable is created.
-                if let Some(first) = node.first_child_ref() {
+                if let Some((_in, out, first)) = node.first_child() {
-                    self.trans2bjit(&first)
+                    let out = if out.len() > 0 { Some(out) } else { None };
+                    self.trans2bjit(&first, out)
                 } else {
                     Err(BlkJITCompileError::BadTree(node.clone()))
                 }
             }
             "set" => {
-                if let Some(first) = node.first_child_ref() {
+                if let Some((_in, out, first)) = node.first_child() {
-                    let expr = self.trans2bjit(&first)?;
+                    let out = if out.len() > 0 { Some(out) } else { None };
+                    let expr = self.trans2bjit(&first, out)?;
                     Ok(BlkASTNode::new_set(&node.0.borrow().lbl, expr))
-
                 } else {
                     Err(BlkJITCompileError::BadTree(node.clone()))
                 }
             }
+            "get" => Ok(BlkASTNode::new_get(node.0.borrow().id, &node.0.borrow().lbl)),
             optype => {
                 let mut childs = vec![];
 
                 let mut i = 0;
-                while let Some((_in, _out, child)) = node.nth_child(i) {
+                while let Some((inp, out, child)) = node.nth_child(i) {
-                    let child = self.trans2bjit(&child)?;
+                    let out = if out.len() > 0 { Some(out) } else { None };
-                    childs.push(child);
+
+                    let child = self.trans2bjit(&child, out)?;
+                    if inp.len() > 0 {
+                        childs.push((Some(inp.to_string()), child));
+                    } else {
+                        childs.push((None, child));
+                    }
                     i += 1;
                 }
 
+                // vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+                // TODO: Check here if the optype has multiple outputs.
+                //       when it has, make a sub-collection of statements
+                //       and make temporary variables with ::Set
+                //       then return the output with a final ::Get to the
+                //       output "my_out".
+                //       If no output is given in "my_out" it's an error!
+                //""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
                 // TODO: Reorder the childs/arguments according to the input
                 //       order in the BlockLanguage
 
                 Ok(BlkASTNode::new_node(
                     node.0.borrow().id,
+                    my_out,
                     &node.0.borrow().typ,
                     &node.0.borrow().lbl,
-                    childs))
+                    childs,
+                ))
             }
         }
     }
@@ -209,8 +310,8 @@ impl Block2JITCompiler {
         let tree = fun.generate_tree::<ASTNodeRef>("zero").unwrap();
         println!("{}", tree.walk_dump("", "", 0));
 
-        let blkast = self.trans2bjit(&tree);
+        let blkast = self.trans2bjit(&tree, None);
-        println!("R: {:#?}", blkast);
+        println!("R: {}", blkast.unwrap().borrow().dump(0, None));
 
         Err(BlkJITCompileError::UnknownError)
     }

tests/blocklang.rs

@@ -26,19 +26,19 @@ fn check_blocklang_1() {
     {
         let mut block_fun = block_fun.lock().expect("matrix lock");
 
-        block_fun.instanciate_at(0, 0, 0, "get", Some("in1".to_string()));
+//        block_fun.instanciate_at(0, 0, 0, "get", Some("in1".to_string()));
-        block_fun.instanciate_at(0, 0, 1, "value", Some("0.3".to_string()));
+//        block_fun.instanciate_at(0, 0, 1, "value", Some("0.3".to_string()));
-        block_fun.instanciate_at(0, 1, 0, "+", None);
+//        block_fun.instanciate_at(0, 1, 0, "+", None);
-        block_fun.instanciate_at(0, 2, 0, "set", Some("&sig1".to_string()));
+//        block_fun.instanciate_at(0, 2, 0, "set", Some("&sig1".to_string()));
-
+//
-        block_fun.instanciate_at(0, 3, 0, "get", Some("in1".to_string()));
+//        block_fun.instanciate_at(0, 3, 0, "get", Some("in1".to_string()));
-        block_fun.instanciate_at(0, 3, 1, "get", Some("in2".to_string()));
+//        block_fun.instanciate_at(0, 3, 1, "get", Some("in2".to_string()));
-        block_fun.instanciate_at(0, 4, 0, "-", None);
+//        block_fun.instanciate_at(0, 4, 0, "-", None);
-        block_fun.instanciate_at(0, 5, 0, "->3", None);
+//        block_fun.instanciate_at(0, 5, 0, "->3", None);
-        block_fun.instanciate_at(0, 6, 1, "set", Some("*a".to_string()));
+//        block_fun.instanciate_at(0, 6, 1, "set", Some("*a".to_string()));
-        block_fun.instanciate_at(0, 6, 2, "set", Some("x".to_string()));
+//        block_fun.instanciate_at(0, 6, 2, "set", Some("x".to_string()));
-        block_fun.instanciate_at(0, 6, 0, "->", None);
+//        block_fun.instanciate_at(0, 6, 0, "->", None);
-        block_fun.instanciate_at(0, 7, 0, "->2", None);
+//        block_fun.instanciate_at(0, 7, 0, "->2", None);
 
         block_fun.instanciate_at(0, 0, 3, "get", Some("in1".to_string()));
         block_fun.instanciate_at(0, 0, 4, "get", Some("in2".to_string()));