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authorYann Herklotz <git@ymhg.org>2019-04-02 19:47:32 +0100
committerYann Herklotz <git@ymhg.org>2019-04-02 19:47:32 +0100
commitfd4b0b5152f94cd406f2e5de86ce7ed0a4d2cbd0 (patch)
tree673439d49fa095bf3ae9b7bbbca5f30d7ff20838 /src/VeriFuzz/ASTGen.hs
parentc0c799ab3f79c370e4c33b8f824489ce8b1c96ec (diff)
downloadverismith-fd4b0b5152f94cd406f2e5de86ce7ed0a4d2cbd0.tar.gz
verismith-fd4b0b5152f94cd406f2e5de86ce7ed0a4d2cbd0.zip
Large refactor with passing tests
Diffstat (limited to 'src/VeriFuzz/ASTGen.hs')
-rw-r--r--src/VeriFuzz/ASTGen.hs79
1 files changed, 0 insertions, 79 deletions
diff --git a/src/VeriFuzz/ASTGen.hs b/src/VeriFuzz/ASTGen.hs
deleted file mode 100644
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--- a/src/VeriFuzz/ASTGen.hs
+++ /dev/null
@@ -1,79 +0,0 @@
-{-|
-Module : VeriFuzz.ASTGen
-Description : Generates the AST from the graph directly.
-Copyright : (c) 2018-2019, Yann Herklotz
-License : BSD-3
-Maintainer : ymherklotz [at] gmail [dot] com
-Stability : experimental
-Portability : POSIX
-
-Generates the AST from the graph directly.
--}
-
-module VeriFuzz.ASTGen
- ( generateAST
- )
-where
-
-import Data.Graph.Inductive (LNode, Node)
-import qualified Data.Graph.Inductive as G
-import Data.Maybe (catMaybes)
-import VeriFuzz.AST
-import VeriFuzz.Circuit
-import VeriFuzz.Internal.Circuit
-import VeriFuzz.Mutate
-
--- | Converts a 'CNode' to an 'Identifier'.
-frNode :: Node -> Identifier
-frNode = Identifier . fromNode
-
--- | Converts a 'Gate' to a 'BinaryOperator', which should be a bijective
--- mapping.
-fromGate :: Gate -> BinaryOperator
-fromGate And = BinAnd
-fromGate Or = BinOr
-fromGate Xor = BinXor
-
-inputsC :: Circuit -> [Node]
-inputsC c = inputs (getCircuit c)
-
-genPortsAST :: (Circuit -> [Node]) -> Circuit -> [Port]
-genPortsAST f c = port . frNode <$> f c where port = Port Wire False 4
-
--- | Generates the nested expression AST, so that it can then generate the
--- assignment expressions.
-genAssignExpr :: Gate -> [Node] -> Maybe Expr
-genAssignExpr _ [] = Nothing
-genAssignExpr _ [n ] = Just . Id $ frNode n
-genAssignExpr g (n : ns) = BinOp wire oper <$> genAssignExpr g ns
- where
- wire = Id $ frNode n
- oper = fromGate g
-
--- | Generate the continuous assignment AST for a particular node. If it does
--- not have any nodes that link to it then return 'Nothing', as that means that
--- the assignment will just be empty.
-genContAssignAST :: Circuit -> LNode Gate -> Maybe ModItem
-genContAssignAST c (n, g) = ModCA . ContAssign name <$> genAssignExpr g nodes
- where
- gr = getCircuit c
- nodes = G.pre gr n
- name = frNode n
-
-genAssignAST :: Circuit -> [ModItem]
-genAssignAST c = catMaybes $ genContAssignAST c <$> nodes
- where
- gr = getCircuit c
- nodes = G.labNodes gr
-
-genModuleDeclAST :: Circuit -> ModDecl
-genModuleDeclAST c = ModDecl i output ports $ combineAssigns yPort a
- where
- i = Identifier "gen_module"
- ports = genPortsAST inputsC c
- output = []
- a = genAssignAST c
- yPort = Port Wire False 90 "y"
-
-generateAST :: Circuit -> Verilog
-generateAST c = Verilog [Description $ genModuleDeclAST c]