{- |

Module :$Header$

Description : utilitary functions used throughout the CMDL interface

Copyright : uni-bremen and DFKI

Licence : similar to LGPL, see HetCATS/LICENSE.txt or LIZENZ.txt

Maintainer : r.pascanu@jacobs-university.de

Stability : provisional

Portability : portable

PGIP.Utils contains different basic functions that are

used throughout the CMDL interface and could not be found in

Prelude

-}

module PGIP.DataTypesUtils

( getAllNodes

, obtainGoalNodeList

, getAllGoalNodes

, getAllEdges

, getAllGoalEdges

, initCMDLProofAbstractState

, getTh

, baseChannels

, genErrorMsg

, genMessage

, genError

) where

import PGIP.Utils

import PGIP.DataTypes

import Common.Result

import Data.List

import Data.Graph.Inductive.Graph

import Static.GTheory

import Static.DevGraph

import Static.DGToSpec

import Logic.Logic

import System.IO

import Proofs.AbstractState

-- | Returns the list of all nodes, if it is not up to date

-- the function recomputes the list

getAllNodes :: CMDL_DevGraphState -> [LNode DGNodeLab]

getAllNodes state

= case allNodesUpToDate state of

-- nodes are up to date

True -> allNodes state

-- nodes are not up to date

False -> labNodesDG $ lookupDGraph (ln state)

(libEnv state)

-- | Given a list of node names and the list of all nodes

-- the function returns all the nodes that have their name

-- in the name list but are also goals

obtainGoalNodeList :: CMDL_State -> [String] -> [LNode DGNodeLab]

-> ([String],[LNode DGNodeLab])

obtainGoalNodeList state input ls

= let (l1,l2) = obtainNodeList input ls

l2' = filter (\(nb,nd) ->

let nwth = getTh nb state

in case nwth of

Nothing -> False

Just th -> nodeContainsGoals (nb,nd) th) l2

in (l1,l2')

-- | Returns the list of all nodes that are goals,

-- taking care of the up to date status

getAllGoalNodes :: CMDL_State -> CMDL_DevGraphState -> [LNode DGNodeLab]

getAllGoalNodes st state

= filter (\(nb,nd) ->

let nwth = getTh nb st

in case nwth of

Nothing -> False

Just th -> nodeContainsGoals (nb,nd) th) $

getAllNodes state

-- | Returns the list of all edges, if it is not up to date

-- the funcrion recomputes the list

getAllEdges :: CMDL_DevGraphState -> [LEdge DGLinkLab]

getAllEdges state

= case allEdgesUpToDate state of

-- edges are up to date

True -> allEdges state

-- edges are not up to date

False -> labEdgesDG $ lookupDGraph (ln state)

(libEnv state)

-- | Returns the list of all goal edges taking care of the

-- up to date status

getAllGoalEdges :: CMDL_DevGraphState -> [LEdge DGLinkLab]

getAllGoalEdges state

= filter edgeContainsGoals $ getAllEdges state

-- | Constructor for CMDLProofGUIState datatype

initCMDLProofAbstractState:: (Logic lid1 sublogics1

basic_spec1 sentence1 symb_items1 symb_map_items1

sign1 morphism1 symbol1 raw_symbol1 proof_tree1) =>

ProofState lid1 sentence1 -> Int

-> CMDL_ProofAbstractState

initCMDLProofAbstractState ps nb

= Element ps nb

--local function that computes the theory of a node

--that takes into consideration translated theories in

--the selection too and returns the theory as a string

getTh :: Int -> CMDL_State -> Maybe G_theory

getTh x state

= let

-- compute the theory for a given node

-- (see Static.DGToSpec)

fn n = case devGraphState state of

Nothing -> Nothing

Just dgState ->

case computeTheory (libEnv dgState)

(ln dgState) n of

Result _ (Just th) -> Just th

_ -> Nothing

in case proveState state of

Nothing -> fn x

Just ps ->

case find (\y -> case y of

Element _ z -> z == x) $

elements ps of

Nothing -> fn x

Just _ ->

case cComorphism ps of

Nothing -> fn x

Just cm ->

case fn x of

Nothing -> Nothing

Just sth->

case mapG_theory cm sth of

Result _ Nothing -> Just sth

Result _ (Just sth') -> Just sth'

-- | Generates the base channels to be used (stdin and stdout)

baseChannels :: [CMDL_Channel]

baseChannels

= let ch_in = CMDL_Channel {

chName = "stdin",

chType = ChStdin,

chHandler = stdin,

chSocket = Nothing,

chProperties = ChRead

}

ch_out = CMDL_Channel {

chName = "stdout",

chType = ChStdout,

chHandler = stdout,

chSocket = Nothing,

chProperties = ChWrite

}

in ch_in : ch_out : []

genErrorMsg :: String -> CMDL_State -> CMDL_State

genErrorMsg msg state

= state {

output = CMDL_Output {

errorMsg = msg,

outputMsg = [],

fatalError = True

}

}

genMessage :: String -> String -> CMDL_State -> CMDL_State

genMessage errMsg msg state

= state {

output = CMDL_Output {

errorMsg = errMsg,

outputMsg = msg,

fatalError = False

}

}

genError :: CMDL_State -> CMDL_State

genError state

= state {

output = CMDL_Output {

errorMsg = [],

outputMsg = [],

fatalError = True

}

}