public override bool VisitAssignmentExpression(AssignmentExpression assignExp)
{
if (assignExp.Target.NodeType == NodeType.VariableRefExpression)
{
// Convert to declaration if not found on the scope
VariableReferenceExpression varRef = (VariableReferenceExpression) assignExp.Target;
ISymbolTable scope = varRef.SymbolTable;
System.Diagnostics.Debug.Assert( scope != null );
String name = varRef.Identifier.Name;
if (!scope.IsDefined(name)) // TODO: The rules are slighly more complicated than that.
{
errorReport.Disable();
SingleVariableDeclarationStatement varDecl = new SingleVariableDeclarationStatement(varRef.Identifier);
IStatement stmt = ASTUtils.GetParentStatement(varRef);
System.Diagnostics.Debug.Assert( stmt != null );
IStatementContainer stmts = stmt.Parent as IStatementContainer;
int index = stmts.Statements.IndexOf(stmt);
varDecl.InitExp = assignExp.Value;
// stmts.Statements.Insert(index, varDecl);
stmts.Statements.Replace(stmt, varDecl);
if (!ApplyDeclarationRules(varRef.Identifier, scope, varDecl, stmt))
{
stmts.Statements.Remove(varDecl);
}
errorReport.Enable();
}
}
return base.VisitAssignmentExpression(assignExp);
}
public IStatement expression_statement() //throws RecognitionException, TokenStreamException
{
IStatement stmt;
stmt = null; PostfixCondition pfc = null; IExpression exp = null; IExpression rhs = null;
AugType rel = AugType.Undefined;
if ((tokenSet_9_.member(LA(1))))
{
{
switch ( LA(1) )
{
case DO:
case BEGIN:
{
exp=compound();
break;
}
case NUM_INT:
case NUM_FLOAT:
case NUM_LONG:
case IDENT:
case STATICIDENT:
case INSTIDENT:
case LITERAL_self:
case LPAREN:
case LITERAL_lambda:
case LCURLY:
case LITERAL_raise:
case LITERAL_yield:
case LITERAL_not:
case LNOT:
case PLUS:
case MINUS:
case BNOT:
case LBRACK:
case LITERAL_base:
case STRING_LITERAL:
case CHAR_LITERAL:
{
exp=test();
{
switch ( LA(1) )
{
case PLUS_ASSIGN:
case MINUS_ASSIGN:
case STAR_ASSIGN:
case DIV_ASSIGN:
case MOD_ASSIGN:
case BAND_ASSIGN:
case BOR_ASSIGN:
case BXOR_ASSIGN:
{
rel=augassign();
rhs=test();
if (0==inputState.guessing)
{
exp = new AugAssignmentExpression(exp, rhs, rel);
}
break;
}
case ASSIGN:
{
{ // ( ... )+
int _cnt75=0;
for (;;)
{
if ((LA(1)==ASSIGN))
{
match(ASSIGN);
rhs=test();
if (0==inputState.guessing)
{
exp = new AssignmentExpression(exp, rhs);
}
}
else
{
if (_cnt75 >= 1) { goto _loop75_breakloop; } else { throw new NoViableAltException(LT(1), getFilename());; }
}
_cnt75++;
}
_loop75_breakloop: ;
} // ( ... )+
break;
}
case EOF:
case WHILE:
case STATEMENT_END:
case SEMI:
case LITERAL_if:
case LITERAL_unless:
case LITERAL_until:
{
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
break;
}
case LITERAL_redo:
case LITERAL_break:
case LITERAL_next:
case LITERAL_retry:
{
exp=flow_expressions();
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
{
switch ( LA(1) )
{
case WHILE:
case LITERAL_if:
case LITERAL_unless:
case LITERAL_until:
{
pfc=postFixCondition();
if (0==inputState.guessing)
{
exp.PostfixCondition = pfc;
}
break;
}
case EOF:
case STATEMENT_END:
case SEMI:
{
break;
}
default:
{
throw new NoViableAltException(LT(1), getFilename());
}
}
}
if (0==inputState.guessing)
{
stmt = new ExpressionStatement(exp);
}
}
else if ((LA(1)==DEF) && (tokenSet_10_.member(LA(2)))) {
stmt=method_def_statement();
}
else if ((LA(1)==DEF) && (LA(2)==LITERAL_initialize)) {
stmt=constructor_def_statement();
}
else
{
throw new NoViableAltException(LT(1), getFilename());
}
return stmt;
}