![[Inhalt]](../images/b_cont.gif)
![[Zurück]](../images/b_prev.gif)
![[Weiter]](../images/b_next.gif)
![[Thema]](../images/b_them.gif)
![[Index]](../images/b_indx.gif)
Die folgenden Regeln bilden formal die Grammatik, die die Sprache AZUR beschreibt. Bis zur Regel "const -> ..." finden sich solche, die kein Terminalsymbol produzieren, demnach auch kein Eingabesymbol verbrauchen, ab "ident -> ..." sind dann die Terminalproduktionen angegegben. Man beachte, dass die Grammatik nur den syntaktischen Aufbau der Sprache beschreibt. Weitergehende Definitionen zum Erstellen semantisch korrekter Programme sind im Kapitel Semantik aufgeführt.
| azurprogram | -> | |
| azurfunc | -> | |
| parameters | -> | () | ( decllist ) | (ellipsis) |
| decllist | -> | decl | decl , decllist | |
| decl | -> | |
| returntype | -> | : ident | e |
| cmdlist | -> | command; | |
| command | -> | forloop | whileloop | repeatloop | ifstmt |
|
| forloop | -> | forall ident in expression cmdlist endfor |
| whileloop | -> | while ( condition ); cmdlist endwhile |
| repeatloop | -> | repeat; cmdlist until ( condition ) |
| ifstmt | -> | if ( condition ); cmdlist elsebranch |
| elsebranch | -> | endif | else; cmdlist endif | elseif ( condition ); cmdlist elsebranch |
| assignment | -> | ident := expression | ident++ | ident -- | ident += expression | ident -= expression |
| procedurecall | -> | ident paramlist |
| paramlist | -> | () | ( exprlist ) |
| returnstmt | -> | return expression |
| exprlist | -> | expression | expression , exprlist |
| condition | -> | monomlist | monomlist or condition |
| monomlist | -> | monom | monom and monomlist |
| monom | -> | expression cmpop expression |
|
| cmpop | -> | = | # | < | > | <= | >= |
| intervall | -> | [expression , expression] |
| distanz | -> | ~ expression |
| zp | -> | @ factor |
| distanz | -> | ~ factor |
| expression | -> | term | term addop expression |
| term | -> | factor | factor mulop term | factor | -> | functioncall | const | ident | |
| addop | -> | + | - |
| mulop | -> | * | / | ^ |
| functioncall | -> | ident paramlist |
| const | -> | number | stringconst | ident |
| ident | -> | _|$|a-z|A-Z [_|a-z|A-Z|0-9 [...] ] |
| number | -> | NUMBER |
| stringconst | -> | STRINGCONST |
| bracketopen | -> | ( |
| bracketclose | -> | ) |
| braceopen | -> | [ |
| braceclose | -> | ] |
| scopeopen | -> | { |
| scopeclose | -> | } |
| Assignment | -> | := |
| equal | -> | = |
| smaller | -> | < |
| greater | -> | > |
| smallerequal | -> | <= |
| greaterequal | -> | >= |
| notequal | -> | # |
| semicolon | -> | ; |
| comma | -> | , |
| colon | -> | : |
| alpha | -> | @ |
| tilde | -> | ~ |
| ellipsis | -> | ... |
| plus | -> | + |
| minus | -> | - |
| mult | -> | * |
| div | -> | / |
| tothepower | -> | ^ |
| and | -> | AND |
| or | -> | OR |
| not | -> | NOT |
| if | -> | IF |
| else | -> | ELSE |
| endif | -> | ENDIF |
| forall | -> | FORALL |
| in | -> | IN |
| endfor | -> | ENDFOR |
| while | -> | WHILE |
| endwhile | -> | ENDWHILE |
| repeat | -> | REPEAT |
| until | -> | UNTIL |
| return | -> | RETURN |
| extern | -> | EXTERN |
| uses | -> | USES |
| end | -> | END |
| arrayelement | -> | ident [ ident ] |
| increment | -> | ident ++ |
| decrement | -> | ident -- |
| plusequal | -> | ident += expression |
| minusequal | -> | ident -= expression |
| mulequal | -> | ident *= expression |
| divequal | -> | ident /= expression |
| Increment | -> | ++ |
| Decrement | -> | -- |
| Plusequal | -> | += |
| Minusequal | -> | -= |
| Mulequal | -> | *= |
| Divequal | -> | /= |
| elseif | -> | ENDIF |
| caseequal | -> | ~= |
| constspec | -> | CONST |
Wie an der Regel "factor -> ..." zu erkennen, handelt es sich nicht um eine LR(2)-