Crate jsonvet 

Checks files in the JSON family for syntax errors, duplicate keys and the rules of each dialect: JSON, I-JSON, JSONC, JWCC (HuJSON), JSON5 and JSON Lines.

use jsonvet::{check, Config, Dialect, Rule};

let text = "{\n  // port\n  \"port\": 80,\n  \"port\": 8080,\n}\n";
let report = check(text, &Config::new(Dialect::Json5));
let problem = &report.problems()[0];
assert_eq!(problem.rule(), Rule::DuplicateKey);
assert_eq!(problem.to_string(), "duplicate key $.port");
let at = report.location(problem.offset());
assert_eq!((at.line, at.column), (4, 3));

check never panics and has no error mode: the problems in the text are its output.

Structs

Config

What to check: a dialect, and any rules whose severity differs from the dialect’s default.

Location

A 1-based line and column. Lines end at LF, CR, CRLF, U+2028 and U+2029, as JSON5 defines them; columns count Unicode code points from the start of the line.

Problem

One problem in a file: what is wrong, where, and how much it matters.

Report

The problems found in one text, in document order.

UnknownDialect

The error for a dialect name jsonvet does not know.

UnknownRule

The error for a rule id jsonvet does not know.

Enums

Dialect

A member of the JSON family. Each one only adds syntax to the one before it, in the order JSON, JSONC, JWCC, JSON5; I-JSON is JSON with stricter content rules, and JSON Lines is one JSON value per line.

Rule

What jsonvet checks. Every problem belongs to one rule.

Severity

How much a problem matters. An ignored (Off) rule is not checked at all.

Functions

check

Check one text and return every problem in it, in document order. Checking stops at the first syntax error; problems found before it stay in the report.