mirror of https://gerrit.osmocom.org/asn1c
93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
#ifndef ASN1FIX_CRANGE_H
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#define ASN1FIX_CRANGE_H
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typedef struct asn1cnst_edge_s {
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enum asn1cnst_range_edge {
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ARE_MIN,
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ARE_MAX,
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ARE_VALUE,
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} type;
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int lineno; /* Line where the corresponding token was found */
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asn1c_integer_t value; /* Value when type is ARE_VALUE */
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} asn1cnst_edge_t;
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typedef struct asn1cnst_range_s {
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asn1cnst_edge_t left; /* MIN from (MIN..10) */
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asn1cnst_edge_t right; /* 10 from (MIN..10) */
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enum asn1cnst_range_narrowing {
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/* Sorted from softest to strictest narrowing */
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NOT_NARROW,
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NARROW_DOUBLE64,
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NARROW_FLOAT32,
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} narrowing; /* Constrained to a known narrow type */
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/* If range is split in parts, these are the parts */
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struct asn1cnst_range_s **elements;
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int el_count;
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int el_size;
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int empty_constraint; /* If yes, too bad. */
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int extensible; /* Extension marker (...) is in effect. */
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int incompatible; /* Constraint incompatible with argument */
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int not_OER_visible; /* Contains not OER-visible components */
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int not_PER_visible; /* Contains not PER-visible components */
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} asn1cnst_range_t;
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/*
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* Compute the constraint range with variable visibility restrictions.
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*
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* (expr_type) must have the type of the top-level parent ASN.1 type.
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* (required_type) must be one of ACT_EL_RANGE, ACT_CT_SIZE or ACT_CT_FROM.
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* (minmax) and (expectation_met) should be 0.
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* ERRORS:
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* EINVAL: Mandatory arguments missing.
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* ENOMEM: Memory allocation failure.
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* EPERM: Invalid constraint reference.
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*/
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enum cpr_flags {
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CPR_noflags = 0x00,
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CPR_strict_OER_visibility = 0x01,
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CPR_strict_PER_visibility = 0x02,
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CPR_simulate_fbless_SIZE = 0x04,
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};
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asn1cnst_range_t *asn1constraint_compute_OER_range(const char *dbg_name,
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asn1p_expr_type_e expr_type,
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const asn1p_constraint_t *ct,
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enum asn1p_constraint_type_e required_type,
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const asn1cnst_range_t *minmax,
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int *expectation_met,
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enum cpr_flags);
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asn1cnst_range_t *asn1constraint_compute_PER_range(const char *dbg_name,
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asn1p_expr_type_e expr_type,
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const asn1p_constraint_t *ct,
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enum asn1p_constraint_type_e required_type,
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const asn1cnst_range_t *minmax,
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int *expectation_met,
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enum cpr_flags);
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/* Base implementation */
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asn1cnst_range_t *asn1constraint_compute_constraint_range(const char *dbg_name,
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asn1p_expr_type_e expr_type,
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const asn1p_constraint_t *ct,
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enum asn1p_constraint_type_e required_type,
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const asn1cnst_range_t *minmax,
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int *expectation_met,
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enum cpr_flags);
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void asn1constraint_range_free(asn1cnst_range_t *);
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/*
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* Check that a specific constraint is compatible
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* with the given expression type.
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*/
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int asn1constraint_compatible(asn1p_expr_type_e expr_type,
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enum asn1p_constraint_type_e constr_type, int fbless_SIZE);
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/*
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* Fetch a default alphabet for this type.
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*/
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asn1cnst_range_t *asn1constraint_default_alphabet(asn1p_expr_type_e expr_type);
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#endif /* ASN1FIX_CRANGE_H */
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