# ---------------------------------------------------------------------------
# JSON primitives
# ---------------------------------------------------------------------------
ws        ::= [ \t\n\r]*
string    ::= "\"" ([^"\\\x7F\x00-\x1F] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F]))* "\""
number    ::= "-"? ([0-9] | [1-9] [0-9]*) ("." [0-9]+)? ([eE] [-+]? [0-9]+)?
integer   ::= "-"? ([0-9] | [1-9] [0-9]*)
boolean   ::= "true" | "false"
null      ::= "null"
any-value ::= string | number | boolean | null | any-object | any-array
any-object ::= "{" ws (string ws ":" ws any-value (ws "," ws string ws ":" ws any-value)*)? ws "}"
any-array  ::= "[" ws (any-value (ws "," ws any-value)*)? ws "]"

# --- whetstone_get_semantic_diff ---
root ::= "{" ws "\"tool\"" ws ":" ws "\"whetstone_get_semantic_diff\"" ws "," ws "\"arguments\"" ws ":" ws whetstone-get-semantic-diff-args-obj-9 ws "}"

whetstone-get-semantic-diff-args-added-pair-2 ::= "\"added\"" ws ":" ws integer
whetstone-get-semantic-diff-args-diff_id-pair-4 ::= "\"diff_id\"" ws ":" ws string
whetstone-get-semantic-diff-args-modified-pair-6 ::= "\"modified\"" ws ":" ws integer
whetstone-get-semantic-diff-args-obj-9 ::= "{" ws whetstone-get-semantic-diff-args-diff_id-pair-4 (ws "," ws whetstone-get-semantic-diff-args-opt-10)* ws "}"
whetstone-get-semantic-diff-args-opt-10 ::= whetstone-get-semantic-diff-args-added-pair-2 | whetstone-get-semantic-diff-args-modified-pair-6 | whetstone-get-semantic-diff-args-removed-pair-8
whetstone-get-semantic-diff-args-removed-pair-8 ::= "\"removed\"" ws ":" ws integer