wire assignments

[sv2nmigen.git] / absyn.py

diff --git a/absyn.py b/absyn.py
index 60a87ba077da641885a424a0b3b50903a9b11a01..a199daa4da6846ebe31ddf19fe9015248d712107 100644 (file)
--- a/absyn.py
+++ b/absyn.py
@@ -46,12 +46,19 @@ class Assignment:
 
 class Absyn:
     def __init__(self, outputfn):
-        self.outputfile = open(outputfn, "w")
-        self.outputfile.write(preamble)
+        self.outputfn = outputfn
+        self.outputfile = None
         self.assign = []
         self.ports = []
+        self.wires = []
+
+    def open(self):
+        if(self.outputfile is None):
+            self.outputfile = open(self.outputfn, "w")
+            self.outputfile.write(preamble)
 
     def printpy(self, p):
+        self.open()
         self.outputfile.write(str(p)+"\n")
 
     def assign(self, p):
@@ -77,6 +84,12 @@ class Absyn:
         self.ports += [port]
         return port
 
+    def isPort(self, name):
+        for p in self.ports:
+            if(str(p.name) == str(name)):
+                return True
+        return False
+
     def initFunc(self, ports, params):
         params = [Leaf(token.LPAR, '('), Leaf(
             token.NAME, "self")] + [Leaf(token.RPAR, ')')]
@@ -110,12 +123,27 @@ class Absyn:
         stmts.children.append(Leaf(token.STRING, "m = Module()"))
         stmts.children.append(self.nl())
 
+        for w in self.wires:
+            wirename = w[0]
+            hasdims = (len(w) >= 4)
+            stmts.children.append(self.indent(2))
+            stmts.children.append(Leaf(token.STRING, wirename))
+            stmts.children.append(Leaf(token.STRING, " = Signal("))
+            if(hasdims):
+                stmts.children.append(Leaf(token.STRING, str(w[3])))
+            stmts.children.append(Leaf(token.STRING, ")"))
+            stmts.children.append(self.nl())
+
         for a in self.assign:
             stmts.children.append(self.indent(2))
             # m.d.sync += self.left.eq(right)
-            stmts.children.append(Leaf(token.STRING, "m.d.comb += self."))
+            stmts.children.append(Leaf(token.STRING, "m.d.comb += "))
+            if(self.isPort(a.left)):
+                stmts.children.append(Leaf(token.STRING, "self."))
             stmts.children.append(Leaf(token.STRING, a.left))
-            stmts.children.append(Leaf(token.STRING, ".eq(self."))
+            stmts.children.append(Leaf(token.STRING, ".eq("))
+            if(self.isPort(a.right)):
+                stmts.children.append(Leaf(token.STRING, "self."))
             stmts.children.append(Leaf(token.STRING, a.right))
             stmts.children.append(Leaf(token.STRING, ")"))
             stmts.children.append(self.nl())
@@ -154,11 +182,18 @@ class Absyn:
         clsdecl = Node(syms.compound_stmt, [clsdecl])
 
         self.printpy(str(clsdecl))
-        print("=====================")
-        print(str(clsdecl))
         return clsdecl
 
+    def module_item_2(self, signaltype, dims, mlist):
+        if(signaltype == "wire"):
+            for m in mlist:
+                if(dims):
+                    self.wires.append(m+dims)
+                else:
+                    self.wires.append(m)
+
     def appendComments(self, data):
+        self.open()
         self.outputfile.write(data)
         #lines = data.split("\n")
         # for line in lines: