/* Preallocate this many fields for structures */
#define DEFAULT_NR_STRUCT_FIELDS 8
-/*
- * Always update stream_pos with move_pos and init_pos.
- */
-struct stream_pos {
- char *base; /* Base address */
- size_t offset; /* Offset from base, in bits */
- int dummy; /* Dummy position, for length calculation */
-};
-
-static inline
-void init_pos(struct stream_pos *pos, char *base)
-{
- pos->base = base; /* initial base, page-aligned */
- pos->offset = 0;
- pos->dummy = false;
-}
-
-/*
- * move_pos - move position of a relative bit offset
- *
- * TODO: allow larger files by updating base too.
- */
-static inline
-void move_pos(struct stream_pos *pos, size_t offset)
-{
- pos->offset = pos->offset + offset;
-}
-
-/*
- * align_pos - align position on a bit offset (> 0)
- *
- * TODO: allow larger files by updating base too.
- */
-static inline
-void align_pos(struct stream_pos *pos, size_t offset)
-{
- pos->offset += offset_align(pos->offset, offset);
-}
-
-static inline
-void copy_pos(struct stream_pos *dest, struct stream_pos *src)
-{
- memcpy(dest, src, sizeof(struct stream_pos));
-}
-
-static inline
-char *get_pos_addr(struct stream_pos *pos)
-{
- /* Only makes sense to get the address after aligning on CHAR_BIT */
- assert(!(pos->offset % CHAR_BIT));
- return pos->base + (pos->offset / CHAR_BIT);
-}
-
+struct stream_pos;
struct format;
struct definition;
* definition_free called with definition ref is decremented to 0.
*/
void (*definition_free)(struct definition *definition);
- /*
- * Definition copy function. Knows how to find the child
- * definition from the parent definition.
- */
- void (*copy)(struct stream_pos *dest, const struct format *fdest,
- struct stream_pos *src, const struct format *fsrc,
- struct definition *definition);
};
struct definition {
int ref; /* number of references to the definition */
};
+typedef int (*rw_dispatch)(struct stream_pos *pos,
+ struct definition *definition);
+
+/* Parent of per-plugin positions */
+struct stream_pos {
+ /* read/write dispatch table. Specific to plugin used for stream. */
+ rw_dispatch *rw_table; /* rw dispatch table */
+};
+
+static inline
+int generic_rw(struct stream_pos *pos, struct definition *definition)
+{
+ enum ctf_type_id dispatch_id = definition->declaration->id;
+ rw_dispatch call;
+
+ assert(pos->rw_table[dispatch_id] != NULL);
+ call = pos->rw_table[dispatch_id];
+ return call(pos, definition);
+}
+
/*
* Because we address in bits, bitfields end up being exactly the same as
* integers, except that their read/write functions must be able to deal with
struct definition_float {
struct definition p;
struct declaration_float *declaration;
+ struct definition_integer *sign;
+ struct definition_integer *mantissa;
+ struct definition_integer *exp;
/* Last values read */
long double value;
};
struct definition p;
struct declaration_string *declaration;
char *value; /* freed at definition_string teardown */
+ size_t len, alloc_len;
};
struct declaration_field {
struct definition p;
struct declaration_array *declaration;
struct definition_scope *scope;
- struct field current_element; /* struct field */
+ GArray *elems; /* struct field */
};
struct declaration_sequence {
struct declaration_sequence *declaration;
struct definition_scope *scope;
struct definition_integer *len;
- struct field current_element; /* struct field */
+ GArray *elems; /* struct field */
};
int register_declaration(GQuark declaration_name,
struct declaration *declaration,
struct declaration_scope *scope);
struct declaration *lookup_declaration(GQuark declaration_name,
- struct declaration_scope *scope);
+ struct declaration_scope *scope);
/*
* Type scopes also contain a separate registry for struct, variant and
lookup_struct_declaration(GQuark struct_name,
struct declaration_scope *scope);
int register_variant_declaration(GQuark variant_name,
- struct declaration_variant *variant_declaration,
+ struct declaration_untagged_variant *untagged_variant_declaration,
struct declaration_scope *scope);
-struct declaration_variant *lookup_variant_declaration(GQuark variant_name,
+struct declaration_untagged_variant *lookup_variant_declaration(GQuark variant_name,
struct declaration_scope *scope);
int register_enum_declaration(GQuark enum_name,
struct declaration_enum *enum_declaration,
struct declaration_enum *
enum_declaration_new(struct declaration_integer *integer_declaration);
+struct declaration_string *
+ string_declaration_new(enum ctf_string_encoding encoding);
+
struct declaration_struct *
struct_declaration_new(struct declaration_scope *parent_scope);
void struct_declaration_add_field(struct declaration_struct *struct_declaration,
/*
* Returns the index of a field within a structure.
*/
-unsigned long struct_declaration_lookup_field_index(struct declaration_struct *struct_declaration,
+int struct_declaration_lookup_field_index(struct declaration_struct *struct_declaration,
GQuark field_name);
/*
* field returned only valid as long as the field structure is not appended to.
*/
struct declaration_field *
struct_declaration_get_field_from_index(struct declaration_struct *struct_declaration,
- unsigned long index);
+ int index);
struct field *
-struct_get_field_from_index(struct definition_struct *struct_definition,
- unsigned long index);
+struct_definition_get_field_from_index(struct definition_struct *struct_definition,
+ int index);
+int struct_rw(struct stream_pos *pos, struct definition *definition);
/*
* The tag enumeration is validated to ensure that it contains only mappings
* to.
*/
struct field *variant_get_current_field(struct definition_variant *variant);
+int variant_rw(struct stream_pos *pos, struct definition *definition);
/*
* elem_declaration passed as parameter now belongs to the array. No
struct declaration_array *
array_declaration_new(size_t len, struct declaration *elem_declaration,
struct declaration_scope *parent_scope);
+uint64_t array_len(struct definition_array *array);
+struct definition *array_index(struct definition_array *array, uint64_t i);
+int array_rw(struct stream_pos *pos, struct definition *definition);
/*
* int_declaration and elem_declaration passed as parameter now belong
sequence_declaration_new(struct declaration_integer *len_declaration,
struct declaration *elem_declaration,
struct declaration_scope *parent_scope);
+uint64_t sequence_len(struct definition_sequence *sequence);
+struct definition *sequence_index(struct definition_sequence *sequence, uint64_t i);
+int sequence_rw(struct stream_pos *pos, struct definition *definition);
/*
* in: path (dot separated), out: q (GArray of GQuark)