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Annotation of researchv10no/cmd/gre/egparen.c, revision 1.1

1.1     ! root        1: #include       "re.h"
        !             2: #include       "lre.h"
        !             3: #include       "hdr.h"
        !             4: 
        !             5: static int egparen(Expr *e);
        !             6: 
        !             7: int
        !             8: re_paren(re_re *re)
        !             9: {
        !            10:        return egparen(re->root);
        !            11: }
        !            12: 
        !            13: static int
        !            14: egparen(Expr *e)
        !            15: {
        !            16:        if(e == 0)
        !            17:                return(0);
        !            18:        switch(e->type)
        !            19:        {
        !            20:        case Null:
        !            21:        case Literal:
        !            22:        case Dot:
        !            23:        case Carat:
        !            24:        case Dollar:
        !            25:        case Backref:
        !            26:        case Compcharclass:
        !            27:        case Charclass:
        !            28:                break;
        !            29:        case Cat:
        !            30:        case Alternate:
        !            31:                return(egparen(e->l)+egparen(e->r));
        !            32:        case Star:
        !            33:        case Plus:
        !            34:        case Quest:
        !            35:        case EOP:
        !            36:                return(egparen(e->l));
        !            37:        case Group:
        !            38:                return(1+egparen(e->l));
        !            39:        }
        !            40:        return(0);
        !            41: }

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