diff options
Diffstat (limited to 'colm/parsedata.cpp')
| -rw-r--r-- | colm/parsedata.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/colm/parsedata.cpp b/colm/parsedata.cpp index c0f086b5..116e576d 100644 --- a/colm/parsedata.cpp +++ b/colm/parsedata.cpp @@ -428,7 +428,8 @@ ParseData::ParseData( const String &fileName, const String §ionName, nextFrameId(0), nextParserId(0), nextLabelId(0), - revertOn(true) + revertOn(true), + predValue(0) { } @@ -1243,11 +1244,23 @@ void ParseData::resolveFactor( PdaFactor *fact ) } } +/* Resolves production els and computes the precedence of each prod. */ void ParseData::resolveProductionEls() { for ( DefList::Iter prod = prodList; prod.lte(); prod++ ) { + /* First resolve. */ for ( ProdElList::Iter fact = *prod->prodElList; fact.lte(); fact++ ) resolveFactor( fact ); + + /* Compute the precedence of the productions. */ + for ( ProdElList::Iter fact = prod->prodElList->last(); fact.gtb(); fact-- ) { + /* Production inherits the precedence of the last terminal with + * precedence. */ + if ( fact->langEl->predType != PredNone ) { + prod->predOf = fact->langEl; + break; + } + } } } |