tree-sitter/examples/grammars/json.cc
2014-03-24 07:19:31 -07:00

52 lines
1.7 KiB
C++

#include "tree_sitter/compiler.h"
namespace tree_sitter {
namespace examples {
using namespace tree_sitter::rules;
static rule_ptr comma_sep(const rule_ptr &rule) {
return choice({
seq({
rule,
repeat(seq({ _sym("comma"), rule })),
}),
blank(),
});
}
Grammar json() {
return Grammar("value", {
{ "value", choice({
sym("object"),
sym("array"),
sym("string"),
sym("number"),
sym("true"),
sym("false"),
sym("null"), }) },
{ "object", seq({
_sym("left_brace"),
comma_sep(err(seq({
sym("string"),
_sym("colon"),
sym("value") }))),
_sym("right_brace"), }) },
{ "array", seq({
_sym("left_bracket"),
comma_sep(err(sym("value"))),
_sym("right_bracket"), }) },
{ "string", pattern("\"([^\"]|\\\\\")+\"") },
{ "number", pattern("\\d+(.\\d+)?") },
{ "comma", str(",") },
{ "colon", str(":") },
{ "left_bracket", str("[") },
{ "right_bracket", str("]") },
{ "left_brace", str("{") },
{ "right_brace", str("}") },
{ "null", str("null") },
{ "true", str("true") },
{ "false", str("false") },
});
}
}
}