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#ifndef PGF_REASONER_H_
#define PGF_REASONER_H_
typedef struct PgfReasoner PgfReasoner;
typedef struct PgfReasonerState PgfReasonerState;
typedef struct PgfExprState PgfExprState;
typedef void (*PgfPredicate)(PgfReasoner* rs, PgfReasonerState* st);
void
pgf_try_first(PgfReasoner* rs, PgfExprState* parent, PgfAbsFun* absfun);
void
pgf_try_else(PgfReasoner* rs, PgfExprState* prev, PgfAbsFun* absfun);
void
pgf_complete(PgfReasoner* rs, PgfExprState* st);
void
pgf_try_constant(PgfReasoner* rs, PgfExprState* prev, PgfAbsFun* absfun);
#endif
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