public void VerifyDefaultState()
{
StateSymbol state = _globals.Resolve("default(*)") as StateSymbol;
if (state == null)
{
_listener.Error(
"line: 0:0" + " No default state defined"
);
}
}
public void Define(StateSymbol stateSym, IScope currentScope)
{
if (stateSym.Name != "default(*)" && _globals.Resolve("default(*)") == null)
{
_listener.Error(
"line " + stateSym.Def.Line + ":" + stateSym.Def.CharPositionInLine + " State '"
+ stateSym.Name + "' cannot be defined yet. Default state must be defined first."
);
}
this.Define((Symbol)stateSym, currentScope);
}
public void CheckStateChange(LSLAst chgNode, LSLAst destID)
{
string stateName = destID != null ? destID.Text + "(*)" : "default(*)";
StateSymbol state = _globals.Resolve(stateName) as StateSymbol;
if (state == null)
{
_listener.Error(
"line " + chgNode.Token.Line + ":" + chgNode.Token.CharPositionInLine +
" Undefined state " + stateName
);
}
}
private void stateBlockDef()
{
EnterRule_stateBlockDef();
EnterRule("stateBlockDef", 11);
TraceIn("stateBlockDef", 11);
LSLAst ident = default(LSLAst);
try { DebugEnterRule(GrammarFileName, "stateBlockDef");
DebugLocation(141, 1);
try
{
// Def.g:142:2: ( ^( STATE_DEF ident= . ( . )* ) )
DebugEnterAlt(1);
// Def.g:142:4: ^( STATE_DEF ident= . ( . )* )
{
DebugLocation(142, 4);
DebugLocation(142, 6);
Match(input,STATE_DEF,Follow._STATE_DEF_in_stateBlockDef307); if (state.failed) return;
Match(input, TokenTypes.Down, null); if (state.failed) return;
DebugLocation(142, 21);
ident=(LSLAst)input.LT(1);
MatchAny(input); if (state.failed) return;
DebugLocation(142, 24);
// Def.g:142:24: ( . )*
try { DebugEnterSubRule(7);
while (true)
{
int alt7=2;
try { DebugEnterDecision(7, false);
int LA7_0 = input.LA(1);
if (((LA7_0>=ASSIGN_EQ && LA7_0<=95)))
{
alt7 = 1;
}
else if ((LA7_0==UP))
{
alt7 = 2;
}
} finally { DebugExitDecision(7); }
switch ( alt7 )
{
case 1:
DebugEnterAlt(1);
// Def.g:142:24: .
{
DebugLocation(142, 24);
MatchAny(input); if (state.failed) return;
}
break;
default:
goto loop7;
}
}
loop7:
;
} finally { DebugExitSubRule(7); }
Match(input, TokenTypes.Up, null); if (state.failed) return;
DebugLocation(143, 3);
if (state.backtracking == 1)
{
StateSymbol stateSym = new StateSymbol(ident.Text, currentScope);
stateSym.Def = ident; // track AST location of def's ID
ident.symbol = stateSym; // track in AST
symtab.Define(stateSym, currentScope);
currentScope = stateSym;
}
}
}
catch (RecognitionException re)
{
ReportError(re);
Recover(input,re);
}
finally
{
TraceOut("stateBlockDef", 11);
LeaveRule("stateBlockDef", 11);
LeaveRule_stateBlockDef();
}
DebugLocation(151, 1);
} finally { DebugExitRule(GrammarFileName, "stateBlockDef"); }
return;
}
public void Define(StateSymbol stateSym, IScope currentScope)
{
if (stateSym.Name != "default(*)" && _globals.Resolve("default(*)") == null)
{
_listener.Error(
"line " + stateSym.Def.Line + ":" + stateSym.Def.CharPositionInLine + " State '"
+ stateSym.Name + "' cannot be defined yet. Default state must be defined first."
);
}
this.Define((Symbol)stateSym, currentScope);
}