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factored out declaration output

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This commit is contained in:
jand 2003-12-08 11:21:24 +00:00
parent 5df49989d6
commit bf9b8212ac
1 changed files with 16 additions and 34 deletions
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50
myhdl/_toVerilog.py
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@ -837,17 +837,21 @@ class _ConvertVisitor(_ToVerilogMixin):
for i in range(nr):
self.buf.write("\n%s" % self.ind)
def writeDeclaration(self, obj, name, dir):
if dir: dir = dir + ' '
if type(obj) is bool:
self.write("%s%s;" % (dir, name))
elif isinstance(obj, int):
self.write("integer %s;" % name)
elif hasattr(obj, '_nrbits'):
self.write("%s[%s-1:0] %s;" % (dir, obj._nrbits, name))
else:
raise AssertionError("unexpected type")
def writeDeclarations(self):
for name, obj in self.ast.vardict.items():
self.writeline()
if type(obj) is bool:
self.write("reg %s;" % name)
elif isinstance(obj, int):
self.write("integer %s;" % name)
elif hasattr(obj, '_nrbits'):
self.write("reg [%s-1:0] %s;" % (obj._nrbits, name))
else:
raise AssertionError("unexpected type")
self.writeDeclaration(obj, name, "reg")
def indent(self):
self.ind += ' ' * 4
@ -1290,32 +1294,17 @@ class _ConvertFunctionVisitor(_ConvertVisitor):
def writeOutputDeclaration(self):
obj = self.ast.returnObj
if type(obj) is bool:
pass
elif isinstance(obj, int):
self.write("integer")
elif hasattr(obj, '_nrbits'):
self.write("[%s-1:0]" % obj._nrbits)
else:
raise AssertionError("unexpected type")
self.writeDeclaration(obj, self.ast.name, dir='')
def writeInputDeclarations(self):
for name in self.ast.argnames:
obj = self.ast.symdict[name]
self.writeline()
if type(obj) is bool:
self.write("input %s;" % name)
elif isinstance(obj, int):
self.write("integer %s;" % name)
elif hasattr(obj, '_nrbits'):
self.write("input [%s-1:0] %s;" % (obj._nrbits, name))
else:
raise AssertionError("unexpected type")
self.writeDeclaration(obj, name, "input")
def visitFunction(self, node):
self.write("function ")
self.writeOutputDeclaration()
self.write(" %s;" % self.ast.name)
self.indent()
self.writeInputDeclarations()
self.writeDeclarations()
@ -1351,16 +1340,9 @@ class _ConvertTaskVisitor(_ConvertVisitor):
output = name in self.ast.outputs
input = name in self.ast.inputs
inout = input and output
dir = inout and "inout" or output and "output" or input and "input"
dir = (inout and "inout") or (output and "output") or (input and "input")
self.writeline()
if type(obj) is bool:
self.write("%s %s;" % (dir, name))
elif isinstance(obj, int):
self.write("integer %s;" % name)
elif hasattr(obj, '_nrbits'):
self.write("%s [%s-1:0] %s;" % (dir, obj._nrbits, name))
else:
raise AssertionError("unexpected type")
self.writeDeclaration(obj, name, dir)
def visitFunction(self, node):
self.write("task %s;" % self.ast.name)