migrate v1 version of p4fpga to p4fpga-python

Author: hanw-bfn

Makefile

@@ -0,0 +1,13 @@
+
+P4PAXOS:=~/dev/p4paxos/p4src
+
+objects:=$(wildcard tests/*.p4)
+
+%:
+	python bsvgen.py tests/$@.p4;
+
+clean:
+	rm *.pyc
+
+doc:
+	doxygen Doxyfile

ast_util.py

@@ -0,0 +1,41 @@
+import astbsv as ast
+from utils import GetHeaderWidthInState
+
+# Generate ParseState Object from parseGraph
+class ParseState(object):
+    REGULAR = "REGULAR"
+    EMPTY = "EMPTY"
+    def __init__(self, id, name):
+        self.id = id
+        self.name = name
+        self.len = GetHeaderWidthInState(name)
+        self.state_type = ParseState.REGULAR
+        self.transitions = None
+        self.transition_keys = None
+        self.parse_ops = None
+
+    def __repr__(self):
+        return "ParseState: %s %s %s" % (self.id, self.name, self.len)
+
+def apply_pdict (tmpls, pdict):
+    stmt = []
+    for t in tmpls:
+        stmt.append(ast.Template(t, pdict))
+    return stmt
+
+def apply_action_block(stmt):
+    """
+        wrap list of stmt in an action block
+        @param: list of stmt
+        @rtype: ActionBlock in a []
+    """
+    return [ast.ActionBlock(stmt)]
+
+def apply_if_verbosity(verbosity, stmt):
+    assert type(stmt) is list
+    assert type(verbosity) is int
+    return [ast.If("cr_verbosity[0] > %d"%(verbosity), stmt)]
+
+def apply_case_stmt(caseExpr, stmt):
+    stmt = ast.Case('v')
+    return [ast.Case(case_expr)]