@tree-sitter-grammars/tree-sitter-yaml

{ "$schema": "https://tree-sitter.github.io/tree-sitter/assets/schemas/grammar.schema.json", "name": "yaml", "rules": { "stream": { "type": "SEQ", "members": [ { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_bgn_imp_doc" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_drs_doc" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_exp_doc" }, "named": true, "value": "document" } ] }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_w_bgn_wo_end_seq" } ] }, { "type": "BLANK" } ] } ] }, { "type": "SEQ", "members": [ { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_bgn_imp_doc_end" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_drs_doc_end" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_exp_doc_end" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_doc_end" }, "named": true, "value": "document" } ] }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_w_bgn_wo_end_seq" }, { "type": "SYMBOL", "name": "_doc_wo_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_wo_bgn_wo_end_seq" } ] }, { "type": "BLANK" } ] } ] } ] }, { "type": "BLANK" } ] }, { "type": "SYMBOL", "name": "_eof" } ] }, "_doc_w_bgn_w_end_seq": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_w_end" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_w_bgn_wo_end_seq" }, { "type": "SYMBOL", "name": "_doc_wo_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_wo_bgn_wo_end_seq" } ] }, { "type": "BLANK" } ] } ] }, "_doc_w_bgn_wo_end_seq": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_wo_end" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_w_bgn_wo_end_seq" } ] }, { "type": "BLANK" } ] } ] }, "_doc_wo_bgn_w_end_seq": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_doc_wo_bgn_w_end" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_w_bgn_wo_end_seq" }, { "type": "SYMBOL", "name": "_doc_wo_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_wo_bgn_wo_end_seq" } ] }, { "type": "BLANK" } ] } ] }, "_doc_wo_bgn_wo_end_seq": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_doc_wo_bgn_wo_end" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_doc_w_bgn_w_end_seq" }, { "type": "SYMBOL", "name": "_doc_w_bgn_wo_end_seq" } ] }, { "type": "BLANK" } ] } ] }, "_doc_w_bgn_w_end": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_exp_doc_end" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_doc_end" }, "named": true, "value": "document" } ] }, "_doc_w_bgn_wo_end": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_exp_doc" }, "named": true, "value": "document" }, "_doc_wo_bgn_w_end": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_drs_doc_end" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_imp_doc_end" }, "named": true, "value": "document" } ] }, "_doc_wo_bgn_wo_end": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_drs_doc" }, "named": true, "value": "document" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_imp_doc" }, "named": true, "value": "document" } ] }, "_bgn_imp_doc": { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_exp_doc_tal" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_seq_r_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_map_r_val" }, "named": true, "value": "block_node" } ] }, "_drs_doc": { "type": "SEQ", "members": [ { "type": "REPEAT1", "content": { "type": "SYMBOL", "name": "_s_dir" } }, { "type": "SYMBOL", "name": "_exp_doc" } ] }, "_exp_doc": { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_drs_end" }, "named": false, "value": "---" }, { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_exp_doc_tal" }, { "type": "BLANK" } ] } ] }, "_imp_doc": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_map_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_str_val" }, "named": true, "value": "block_node" }, { "type": "SYMBOL", "name": "_br_flw_val_blk" } ] }, "_drs_doc_end": { "type": "PREC", "value": 1, "content": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_drs_doc" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_doc_end" }, "named": false, "value": "..." } ] } }, "_exp_doc_end": { "type": "PREC", "value": 1, "content": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_exp_doc" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_doc_end" }, "named": false, "value": "..." } ] } }, "_imp_doc_end": { "type": "PREC", "value": 1, "content": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_imp_doc" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_doc_end" }, "named": false, "value": "..." } ] } }, "_bgn_imp_doc_end": { "type": "PREC", "value": 1, "content": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_bgn_imp_doc" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_doc_end" }, "named": false, "value": "..." } ] } }, "_doc_end": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_doc_end" }, "named": false, "value": "..." }, "_exp_doc_tal": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_seq_br_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_map_br_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_map_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_str_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_str_val" }, "named": true, "value": "block_node" }, { "type": "SYMBOL", "name": "_r_flw_val_blk" }, { "type": "SYMBOL", "name": "_br_flw_val_blk" } ] }, "_s_dir": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_dir_yml" }, "named": true, "value": "yaml_directive" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_dir_tag" }, "named": true, "value": "tag_directive" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_dir_rsv" }, "named": true, "value": "reserved_directive" } ] }, "_s_dir_yml": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_s_dir_yml_bgn" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_dir_yml_ver" }, "named": true, "value": "yaml_version" } ] }, "_s_dir_tag": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_s_dir_tag_bgn" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_dir_tag_hdl" }, "named": true, "value": "tag_handle" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_dir_tag_pfx" }, "named": true, "value": "tag_prefix" } ] }, "_s_dir_rsv": { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_s_dir_rsv_bgn" }, "named": true, "value": "directive_name" }, { "type": "REPEAT", "content": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_dir_rsv_prm" }, "named": true, "value": "directive_parameter" } } ] }, "_r_prp_val": { "type": "SYMBOL", "name": "_r_prp" }, "_br_prp_val": { "type": "SYMBOL", "name": "_br_prp" }, "_r_sgl_prp_val": { "type": "SYMBOL", "name": "_r_sgl_prp" }, "_br_sgl_prp_val": { "type": "SYMBOL", "name": "_br_sgl_prp" }, "_b_sgl_prp_val": { "type": "SYMBOL", "name": "_b_sgl_prp" }, "_r_prp": { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_acr" }, "named": true, "value": "anchor" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_tag" }, "named": true, "value": "tag" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_tag" }, "named": true, "value": "tag" } ] }, { "type": "BLANK" } ] } ] }, { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_tag" }, "named": true, "value": "tag" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_acr" }, "named": true, "value": "anchor" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_acr" }, "named": true, "value": "anchor" } ] }, { "type": "BLANK" } ] } ] } ] }, "_br_prp": { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_acr" }, "named": true, "value": "anchor" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_tag" }, "named": true, "value": "tag" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_tag" }, "named": true, "value": "tag" } ] }, { "type": "BLANK" } ] } ] }, { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_tag" }, "named": true, "value": "tag" }, { "type": "CHOICE", "members": [ { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_acr" }, "named": true, "value": "anchor" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_acr" }, "named": true, "value": "anchor" } ] }, { "type": "BLANK" } ] } ] } ] }, "_r_sgl_prp": { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_acr" }, "named": true, "value": "anchor" }, { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_tag" }, "named": true, "value": "tag" }, { "type": "BLANK" } ] } ] }, { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_tag" }, "named": true, "value": "tag" }, { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_acr" }, "named": true, "value": "anchor" }, { "type": "BLANK" } ] } ] } ] }, "_br_sgl_prp": { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_acr" }, "named": true, "value": "anchor" }, { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_tag" }, "named": true, "value": "tag" }, { "type": "BLANK" } ] } ] }, { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_tag" }, "named": true, "value": "tag" }, { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_acr" }, "named": true, "value": "anchor" }, { "type": "BLANK" } ] } ] } ] }, "_b_sgl_prp": { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_acr" }, "named": true, "value": "anchor" }, { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_tag" }, "named": true, "value": "tag" }, { "type": "BLANK" } ] } ] }, { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_tag" }, "named": true, "value": "tag" }, { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_acr" }, "named": true, "value": "anchor" }, { "type": "BLANK" } ] } ] } ] }, "_r_blk_seq_val": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_seq_r_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_seq_br_val" }, "named": true, "value": "block_node" } ] }, "_r_blk_seq_r_val": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_seq" }, "named": true, "value": "block_sequence" }, "_r_blk_seq_br_val": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_r_prp" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq" }, "named": true, "value": "block_sequence" } ] }, "_br_blk_seq_val": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq" }, "named": true, "value": "block_sequence" }, { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_br_prp" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq" }, "named": true, "value": "block_sequence" } ] } ] }, "_r_blk_seq_spc_val": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_r_prp" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_seq_spc" }, "named": true, "value": "block_sequence" } ] }, "_br_blk_seq_spc_val": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_br_prp" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_seq_spc" }, "named": true, "value": "block_sequence" } ] }, "_b_blk_seq_spc_val": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_seq_spc" }, "named": true, "value": "block_sequence" }, "_r_blk_seq": { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_seq_itm" }, "named": true, "value": "block_sequence_item" }, { "type": "REPEAT", "content": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_seq_itm" }, "named": true, "value": "block_sequence_item" } }, { "type": "SYMBOL", "name": "_bl" } ] }, "_br_blk_seq": { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq_itm" }, "named": true, "value": "block_sequence_item" }, { "type": "REPEAT", "content": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_seq_itm" }, "named": true, "value": "block_sequence_item" } }, { "type": "SYMBOL", "name": "_bl" } ] }, "_b_blk_seq_spc": { "type": "SEQ", "members": [ { "type": "REPEAT1", "content": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_seq_itm" }, "named": true, "value": "block_sequence_item" } }, { "type": "SYMBOL", "name": "_bl" } ] }, "_r_blk_seq_itm": { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_seq_bgn" }, "named": false, "value": "-" }, { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_blk_seq_itm_tal" }, { "type": "BLANK" } ] } ] }, "_br_blk_seq_itm": { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq_bgn" }, "named": false, "value": "-" }, { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_blk_seq_itm_tal" }, { "type": "BLANK" } ] } ] }, "_b_blk_seq_itm": { "type": "SEQ", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_seq_bgn" }, "named": false, "value": "-" }, { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_blk_seq_itm_tal" }, { "type": "BLANK" } ] } ] }, "_blk_seq_itm_tal": { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_r_blk_seq_val" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_seq_val" }, "named": true, "value": "block_node" }, { "type": "SYMBOL", "name": "_r_blk_map_val" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_map_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_str_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_str_val" }, "named": true, "value": "block_node" }, { "type": "SYMBOL", "name": "_r_flw_val_blk" }, { "type": "SYMBOL", "name": "_br_flw_val_blk" } ] }, "_r_blk_map_val": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_map_r_val" }, "named": true, "value": "block_node" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_map_br_val" }, "named": true, "value": "block_node" } ] }, "_r_blk_map_r_val": { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_map" }, "named": true, "value": "block_mapping" }, "_r_blk_map_br_val": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_r_prp" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_map" }, "named": true, "value": "block_mapping" } ] }, "_br_blk_map_val": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_map" }, "named": true, "value": "block_mapping" }, { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_br_prp" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_map" }, "named": true, "value": "block_mapping" } ] } ] }, "_r_blk_map": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_r_blk_map_itm" }, { "type": "REPEAT", "content": { "type": "SYMBOL", "name": "_b_blk_map_itm" } }, { "type": "SYMBOL", "name": "_bl" } ] }, "_br_blk_map": { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_br_blk_map_itm" }, { "type": "REPEAT", "content": { "type": "SYMBOL", "name": "_b_blk_map_itm" } }, { "type": "SYMBOL", "name": "_bl" } ] }, "_r_blk_map_itm": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_exp_itm" }, "named": true, "value": "block_mapping_pair" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_r_blk_imp_itm" }, "named": true, "value": "block_mapping_pair" } ] }, "_br_blk_map_itm": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_exp_itm" }, "named": true, "value": "block_mapping_pair" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_br_blk_imp_itm" }, "named": true, "value": "block_mapping_pair" } ] }, "_b_blk_map_itm": { "type": "CHOICE", "members": [ { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_exp_itm" }, "named": true, "value": "block_mapping_pair" }, { "type": "ALIAS", "content": { "type": "SYMBOL", "name": "_b_blk_imp_itm" }, "named": true, "value": "block_mapping_pair" } ] }, "_r_blk_exp_itm": { "type": "PREC_RIGHT", "value": 0, "content": { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_r_blk_key_itm" }, { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_b_blk_val_itm" }, { "type": "BLANK" } ] } ] }, { "type": "SYMBOL", "name": "_r_blk_val_itm" } ] } }, "_br_blk_exp_itm": { "type": "PREC_RIGHT", "value": 0, "content": { "type": "CHOICE", "members": [ { "type": "SEQ", "members": [ { "type": "SYMBOL", "name": "_br_blk_key_itm" }, { "type": "CHOICE", "members": [ { "type": "SYMBOL", "name": "_b_blk_val_itm" }, { "type": "BLANK" } ] } ] }, { "type": "SYMBOL", "name": 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