public void Prepare(RootNode tree)
{
funcDefinitions_.Clear();
foreach (ISCNode node in tree.Children)
{
if (node is VarDefNode)
{
globalScope_.Add(node as VarDefNode);
}
else if (node is FuncDefNode)
{
FuncDefNode funcDef = node as FuncDefNode;
if (funcDefinitions_.Contains(funcDef))
throw new InterpreterException("Multiple function definitions for function: " + funcDef.Name);
funcDefinitions_.Add(funcDef);
if (funcDef.Name == "main")
mainFuncDef_ = funcDef;
}
else if (node is FuncDeclNode)
{
// Just ignore function declarations
}
}
if (mainFuncDef_ == null)
throw new InterpreterException("Missing 'main' function");
globalScope_.FuncDefs = funcDefinitions_;
}
public RootNode walk()
{
EnterRule_walk();
EnterRule("walk", 1);
TraceIn("walk", 1);
RootNode node = default(RootNode);
ISCNode programStatement1 = default(ISCNode);
node = new RootNode();
try { DebugEnterRule(GrammarFileName, "walk");
DebugLocation(17, 0);
try
{
// Grammar\\SimpleCTreeWalker.g:20:3: ( ^( PROGRAM ( programStatement )* ) )
DebugEnterAlt(1);
// Grammar\\SimpleCTreeWalker.g:22:2: ^( PROGRAM ( programStatement )* )
{
DebugLocation(22, 2);
DebugLocation(22, 4);
Match(input,PROGRAM,Follow._PROGRAM_in_walk61);
if (input.LA(1) == TokenTypes.Down)
{
Match(input, TokenTypes.Down, null);
DebugLocation(22, 12);
// Grammar\\SimpleCTreeWalker.g:22:12: ( programStatement )*
try { DebugEnterSubRule(1);
while (true)
{
int alt1=2;
try { DebugEnterDecision(1, false);
int LA1_0 = input.LA(1);
if (((LA1_0>=FUNC_DECL && LA1_0<=FUNC_DEF)||LA1_0==VAR_DEF))
{
alt1 = 1;
}
} finally { DebugExitDecision(1); }
switch ( alt1 )
{
case 1:
DebugEnterAlt(1);
// Grammar\\SimpleCTreeWalker.g:22:13: programStatement
{
DebugLocation(22, 13);
PushFollow(Follow._programStatement_in_walk64);
programStatement1=programStatement();
PopFollow();
DebugLocation(22, 30);
node.Children.Add(programStatement1);
}
break;
default:
goto loop1;
}
}
loop1:
;
} finally { DebugExitSubRule(1); }
Match(input, TokenTypes.Up, null);
}
}
}
catch (RecognitionException re)
{
ReportError(re);
Recover(input,re);
}
finally
{
TraceOut("walk", 1);
LeaveRule("walk", 1);
LeaveRule_walk();
}
DebugLocation(23, 0);
} finally { DebugExitRule(GrammarFileName, "walk"); }
return node;
}