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removed skeletal (non-functioning) "when" support from ZAM

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This commit is contained in:
Vern Paxson 2023-04-02 11:37:36 -07:00
parent 84906171ba
commit 61891e615a
3 changed files with 0 additions and 100 deletions
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77
src/script_opt/ZAM/Stmt.cc
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@ -63,9 +63,6 @@ const ZAMStmt ZAMCompiler::CompileStmt(const Stmt* s)
case STMT_NULL:
return EmptyStmt();
case STMT_WHEN:
return CompileWhen(static_cast<const WhenStmt*>(s));
case STMT_CHECK_ANY_LEN:
{
auto cs = static_cast<const CheckAnyLenStmt*>(s);
@ -1125,78 +1122,4 @@ const ZAMStmt ZAMCompiler::InitTable(IDPtr id, TableType* tt, Attributes* attrs)
return AddInst(z);
}
const ZAMStmt ZAMCompiler::CompileWhen(const WhenStmt* ws)
{
auto cond = ws->Cond();
auto body = ws->Body();
auto timeout = ws->TimeoutExpr();
auto timeout_body = ws->TimeoutBody();
auto is_return = ws->IsReturn();
ZInstI z;
if ( timeout )
{
// Note, we fill in is_return by hand since it's already
// an int_val, doesn't need translation.
if ( timeout->Tag() == EXPR_CONST )
{
z = GenInst(OP_WHEN_VVVC, timeout->AsConstExpr());
z.op_type = OP_VVVC_I1_I2_I3;
z.v3 = is_return;
}
else
{
z = GenInst(OP_WHEN_VVVV, timeout->AsNameExpr());
z.op_type = OP_VVVV_I2_I3_I4;
z.v4 = is_return;
}
}
else
{
z = GenInst(OP_WHEN_VV);
z.op_type = OP_VV_I1_I2;
z.v1 = is_return;
}
z.e = cond.get();
auto when_eval = AddInst(z);
auto branch_past_blocks = GoToStub();
auto when_body = CompileStmt(body);
auto when_done = ReturnX();
if ( timeout )
{
auto t_body = CompileStmt(timeout_body);
auto t_done = ReturnX();
if ( timeout->Tag() == EXPR_CONST )
{
SetV1(when_eval, GoToTargetBeyond(branch_past_blocks));
SetV2(when_eval, GoToTargetBeyond(when_done));
}
else
{
SetV2(when_eval, GoToTargetBeyond(branch_past_blocks));
SetV3(when_eval, GoToTargetBeyond(when_done));
}
SetGoTo(branch_past_blocks, GoToTargetBeyond(t_done));
return t_done;
}
else
{
SetV2(when_eval, GoToTargetBeyond(branch_past_blocks));
SetGoTo(branch_past_blocks, GoToTargetBeyond(when_done));
return when_done;
}
}
} // zeek::detail