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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Boogie;
namespace GPUVerify
{
class StructuredProgramVisitor
{
public virtual StmtList VisitStmtList(StmtList stmtList)
{
StmtList result = new StmtList(new List<BigBlock>(), stmtList.EndCurly);
foreach (BigBlock bb in stmtList.BigBlocks)
{
result.BigBlocks.AddRange(VisitBigBlock(bb));
}
return result;
}
public virtual List<BigBlock> VisitBigBlock(BigBlock bb)
{
BigBlock firstBigBlock = new BigBlock(bb.tok, bb.LabelName, new CmdSeq(), null, bb.tc);
firstBigBlock.simpleCmds = VisitCmdSeq(bb.simpleCmds);
if (bb.ec is WhileCmd)
{
firstBigBlock.ec = VisitWhileCmd(bb.ec as WhileCmd);
}
else if (bb.ec is IfCmd)
{
firstBigBlock.ec = VisitIfCmd(bb.ec as IfCmd);
}
else if (bb.ec is BreakCmd)
{
firstBigBlock.ec = VisitBreakCmd(bb.ec as BreakCmd);
}
else if (bb.ec != null)
{
throw new InvalidOperationException();
}
return new List<BigBlock>(new BigBlock[] { firstBigBlock });
}
public virtual IfCmd VisitIfCmd(IfCmd ifCmd)
{
if(ifCmd.elseIf != null)
{
throw new InvalidOperationException();
}
return new IfCmd(ifCmd.tok, VisitIfGuard(ifCmd.Guard), VisitStmtList(ifCmd.thn), ifCmd.elseIf,
(ifCmd.elseBlock == null ? ifCmd.elseBlock : VisitStmtList(ifCmd.elseBlock)));
throw new NotImplementedException();
}
public virtual Expr VisitIfGuard(Expr expr)
{
return expr;
}
public virtual WhileCmd VisitWhileCmd(WhileCmd whileCmd)
{
return new WhileCmd(whileCmd.tok, VisitWhileGuard(whileCmd.Guard), VisitWhileInvariants(whileCmd.Invariants), VisitStmtList(whileCmd.Body));
}
public virtual BreakCmd VisitBreakCmd(BreakCmd breakCmd)
{
return breakCmd;
}
public virtual List<PredicateCmd> VisitWhileInvariants(List<PredicateCmd> invariants)
{
return invariants;
}
public virtual Expr VisitWhileGuard(Expr expr)
{
return expr;
}
public virtual CmdSeq VisitCmdSeq(CmdSeq cmdSeq)
{
CmdSeq result = new CmdSeq();
foreach (Cmd c in cmdSeq)
{
result.AddRange(VisitCmd(c));
}
return result;
}
public virtual CmdSeq VisitCmd(Cmd c)
{
if (c is CallCmd)
{
return VisitCallCmd(c as CallCmd);
}
if (c is AssignCmd)
{
return VisitAssignCmd(c as AssignCmd);
}
if (c is HavocCmd)
{
return VisitHavocCmd(c as HavocCmd);
}
if (c is AssertCmd)
{
return VisitAssertCmd(c as AssertCmd);
}
if (c is AssumeCmd)
{
return VisitAssumeCmd(c as AssumeCmd);
}
throw new InvalidOperationException();
}
public virtual CmdSeq VisitAssumeCmd(AssumeCmd assumeCmd)
{
return new CmdSeq(new Cmd[] { assumeCmd });
}
public virtual CmdSeq VisitAssertCmd(AssertCmd assertCmd)
{
return new CmdSeq(new Cmd[] { assertCmd });
}
public virtual CmdSeq VisitHavocCmd(HavocCmd havocCmd)
{
return new CmdSeq(new Cmd[] { havocCmd });
}
public virtual CmdSeq VisitAssignCmd(AssignCmd assignCmd)
{
return new CmdSeq(new Cmd[] { assignCmd });
}
public virtual CmdSeq VisitCallCmd(CallCmd callCmd)
{
return new CmdSeq(new Cmd[] { callCmd });
}
}
}
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