(* SparkLang homepage verbs — generated from status.py *)
program     = { statement } ;
statement   = model_stmt | expect_stmt | http_stmt ;
model_stmt  = train | status | inspect | diff | probe
            | decompile | patch | eval | stage ;
train       = "model", "train", "dataset", string, "base", string,
              "out", string, "backend", string,
              [ "method", string ], [ "->", ident ] ;
status      = "model", "status", string, [ "->", ident ] ;
inspect     = "model", "inspect", path, [ "->", ident ] ;
diff        = "model", "diff", path, path, [ "->", ident ] ;
probe       = "model", "probe", "base", "symbols", string,
              [ "->", ident ] ;
decompile   = "model", "decompile", { token } ; (* experimental *)
patch       = "model", "patch", { token } ;     (* experimental *)
eval        = "model", "eval", ident, "suite", string,
              [ "->", ident ] ;
stage       = "model", "stage", ident, "marker", string,
              [ "->", ident ] ;
expect_stmt = contains | gte | lte | eq | histogram_min | score ;
contains    = "expect", "contains", ident, "fixture", string ;
gte         = "expect", "gte", ident, jsonpath, number ;
lte         = "expect", "lte", ident, jsonpath, number ;
eq          = "expect", "eq", ident, jsonpath, value ;
histogram_min = "expect", "histogram_min", ident, ident, number ;
score       = "expect", "score", ident, jsonpath, "using", string,
              ">=", number ;
http_stmt   = http_get | http_post ;
http_get    = "http", "get", string, [ "fixture", string ],
              [ "timeout", number ], [ "->", ident ] ;
http_post   = "http", "post", string, [ "body", string ],
              [ "fixture", string ], [ "timeout", number ],
              [ "->", ident ] ;
string      = '"', { char }, '"' ;
ident       = letter, { letter | digit | "_" | "-" } ;
jsonpath    = "$", { ".", ident | "[" , digit, "]" } ;
path        = string | ident ;
value       = string | number | "true" | "false" ;