comparison: src/Expression.cc
src/Expression.cc
- changeset 95
- 4db95b92c29a
- parent 94
- 8915ee6a277d
- child 96
- 3384d7aa036a
equal
deleted
inserted
replaced
| 94:8915ee6a277d | 95:4db95b92c29a |
|---|---|
| 233 // | 233 // |
| 234 // Verifies a single value. Helper function for Expression::Verify. | 234 // Verifies a single value. Helper function for Expression::Verify. |
| 235 // | 235 // |
| 236 void Expression::TryVerifyValue (bool* verified, SymbolList::Iterator it) | 236 void Expression::TryVerifyValue (bool* verified, SymbolList::Iterator it) |
| 237 { | 237 { |
| 238 // If it's an unary operator we skip to its value. The actual operator will | |
| 239 // be verified separately. | |
| 240 if ((*it)->GetType() == eOperatorSymbol && | |
| 241 gOperators[static_cast<ExpressionOperator*> (*it)->GetID()].numoperands == 1) | |
| 242 { | |
| 243 ++it; | |
| 244 } | |
| 245 | |
| 238 int i = it - mSymbols.begin(); | 246 int i = it - mSymbols.begin(); |
| 239 | 247 |
| 240 // Ensure it's an actual value | 248 // Ensure it's an actual value |
| 241 if ((*it)->GetType() != eValueSymbol) | 249 if ((*it)->GetType() != eValueSymbol) |
| 242 Error ("malformed expression (symbol #%1 is not a value)", i); | 250 Error ("malformed expression (symbol #%1 is not a value)", i); |
| 412 val->ConvertToBuffer(); | 420 val->ConvertToBuffer(); |
| 413 | 421 |
| 414 ExpressionValue* newval = new ExpressionValue (mType); | 422 ExpressionValue* newval = new ExpressionValue (mType); |
| 415 | 423 |
| 416 if (isconstexpr == false) | 424 if (isconstexpr == false) |
| 425 { | |
| 426 // This is not a constant expression so we'll have to use databuffers | |
| 427 // to convey the expression to bytecode. Actual value cannot be evaluated | |
| 428 // until Zandronum processes it at run-time. | |
| 417 newval->SetBuffer (new DataBuffer); | 429 newval->SetBuffer (new DataBuffer); |
| 418 | 430 |
| 419 if (isconstexpr == false) | |
| 420 { | |
| 421 if (op->GetID() == opTernary) | 431 if (op->GetID() == opTernary) |
| 422 { | 432 { |
| 423 // There isn't a dataheader for ternary operator. Instead, we use dhIfNotGoto | 433 // There isn't a dataheader for ternary operator. Instead, we use dhIfNotGoto |
| 424 // to create an "if-block" inside an expression. | 434 // to create an "if-block" inside an expression. |
| 425 // Behold, big block of writing madness! :P | 435 // Behold, big block of writing madness! :P |
