Function strip_jsonc_comments

src/agents/mod.rs:1027–1085

Internal helper: removes JSONC comments and trailing commas.

(input: &str)

/// Internal helper: removes JSONC comments and trailing commas.
fn strip_jsonc_comments(input: &str) -> String {
    let mut out = String::with_capacity(input.len());
    let chars: Vec<char> = input.chars().collect();
    let len = chars.len();
    let mut i = 0;
    let mut in_string = false;

    while i < len {
        // Handle string literals (skip comment stripping inside strings).
        if in_string {
            if chars[i] == '\\' && i + 1 < len {
                out.push(chars[i]);
                out.push(chars[i + 1]);
                i += 2;
                continue;
            }
            if chars[i] == '"' {
                in_string = false;
            }
            out.push(chars[i]);
            i += 1;
            continue;
        }

        // Start of string.
        if chars[i] == '"' {
            in_string = true;
            out.push(chars[i]);
            i += 1;
            continue;
        }

        // Line comment `//`.
        if chars[i] == '/' && i + 1 < len && chars[i + 1] == '/' {
            // Skip until newline.
            while i < len && chars[i] != '\n' {
                i += 1;
            }
            continue;
        }

        // Block comment `/* ... */`.
        if chars[i] == '/' && i + 1 < len && chars[i + 1] == '*' {
            i += 2;
            while i + 1 < len && !(chars[i] == '*' && chars[i + 1] == '/') {
                i += 1;
            }
            i += 2; // consume `*/`
            continue;
        }

        out.push(chars[i]);
        i += 1;
    }

    // Remove trailing commas before `}` or `]`.
    // Simple regex-free approach: repeatedly collapse ", <whitespace> }" patterns.
    remove_trailing_commas(&out)