mirror of
https://github.com/felt/tippecanoe.git
synced 2026-10-02 08:25:40 +02:00
Erica Fischer
e2a7a409c7
* Add a way to run tippecanoe single-threaded for profiling * Do less work when the tilestats sample values list is already full * Save a copy when retrieving the attribute key * Fewer atomic operations * Move string hashing from mbtiles to text * Only do approximate attribute deduplication when writing tiles * Feature dropping tests are sensitive to exact tile size * All tile creators now create a string pool for the tile * Features clipped away to nothing should not participate in that tile * Revert "Only do approximate attribute deduplication when writing tiles" This reverts commitc42b34b498. * Also revert the related test changes * Revert "Revert "Only do approximate attribute deduplication when writing tiles"" This reverts commit18509876c3. * Be more specific about the string hash function * Use fnv1a instead of std::hash for everything * Reduce the chance of hash collisions * Stick a hash search on the front of the tree search in addpool * Eliminate repeated hashing of the same string * Switch instead of ifs in json parsing * A few more cases to populate the hash in addpool * Store the hash in the tree instead of recalculating * Add explanatory comment for mysterious argument * Fewer copies in attribute stringification * Clean up ancient weirdness in JSON attribute stringification * More serial_val cleanup * Pass a serial_feature to rewrite instead of many broken-down arguments * Get rid of the multiple geometries within `partial` * Revert "Pass a serial_feature to rewrite instead of many broken-down arguments" This reverts commit6f4ab9b725. * Goodbye, struct coalesce * Revert "Features clipped away to nothing should not participate in that tile" This reverts commit124462fbdc. * Migrating fields from partial to serial_feature * Name reconciliation between serial_feature and partial * Replace struct partial with an augmented serial_feature * Fix some overzealous search-and-replace renaming * Don't say struct so often * Remove more of the former partial construction * Commenting and cleaning up * Trying again to avoid all these arguments to rewrite * I swear I did this same thing before and it didn't work. * More rewrite cleanup * Exile --detect-shared-borders to its own file * Add missing headers * More commenting and cleanup * More comments * Sprinkle consts around * Emplacing and std::moving * More cleanup * That shouldn't have worked after a std::move * Don't need to allocate memory to compare keys * Reduce use of the global string pool in tiling * Another avoidable mvt_value construction * Further reduction to explicit string pool passing * These reverses are no longer optimizations * These layernames can all be references * Don't drag an unused layername string around with every feature * Heed a compiler warning about potential buffer overflow * Fix my confusion about which feature's string pool is relevant * Avoid some unnecessary allocations in attribute accumulation * Maybe faster serialization? * Eliminate a comparison * Do the same here * Save a couple of allocations when parsing numbers in JSON * Immediately assign features to layers instead of subdividing later * Maintain tilestats for tippecanoe:retain_points_multiplier_sequence * Crunch out more duplicate attribute values when writing out the tile * Do tilestats for tippecanoe:retain_points_multiplier_first too * Shell filters need to be real threads, even if nothing else does * Simplify tippecanoe_minzoom/maxzoom representation * Update version and changelog
98 lines
1.9 KiB
C
98 lines
1.9 KiB
C
#ifndef JSONPULL_H
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#define JSONPULL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum json_type {
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// These types can be returned by json_read()
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JSON_HASH,
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JSON_ARRAY,
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JSON_NUMBER,
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JSON_STRING,
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JSON_TRUE,
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JSON_FALSE,
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JSON_NULL,
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// These and JSON_HASH and JSON_ARRAY can be called back by json_read_with_separators()
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JSON_COMMA,
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JSON_COLON,
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// These are only used internally as expectations of what comes next
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JSON_ITEM,
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JSON_KEY,
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JSON_VALUE,
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} json_type;
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typedef struct json_object {
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struct json_object *parent;
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struct json_pull *parser;
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union {
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struct {
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double number;
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unsigned long long large_unsigned;
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long long large_signed;
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} number;
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struct {
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char *string;
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} string;
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struct {
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struct json_object **array;
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size_t length;
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} array;
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struct {
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struct json_object **keys;
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struct json_object **values;
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size_t length;
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} object;
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} value;
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json_type type;
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int expect;
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} json_object;
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typedef struct json_pull {
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char *error;
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int line;
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ssize_t (*read)(struct json_pull *, char *buf, size_t n);
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void *source;
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char *buffer;
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ssize_t buffer_tail;
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ssize_t buffer_head;
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json_object *container;
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json_object *root;
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struct string *number_buffer;
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} json_pull;
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json_pull *json_begin_file(FILE *f);
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json_pull *json_begin_string(const char *s);
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json_pull *json_begin(ssize_t (*read)(struct json_pull *, char *buffer, size_t n), void *source);
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void json_end(json_pull *p);
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typedef void (*json_separator_callback)(json_type type, json_pull *j, void *state);
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json_object *json_read_tree(json_pull *j);
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json_object *json_read(json_pull *j);
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json_object *json_read_separators(json_pull *j, json_separator_callback cb, void *state);
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void json_free(json_object *j);
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void json_disconnect(json_object *j);
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json_object *json_hash_get(json_object *o, const char *s);
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char *json_stringify(json_object *o);
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#ifdef __cplusplus
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}
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#endif
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#endif
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