code_callers.lua

-- MCP Tool: code_callers
-- Caller chain (upward): who calls this function/method?
-- Entry kind: function.lua

local tools = require("tools")
local fmt = require("fmt")

local function call(arguments)
    if not arguments.symbol or arguments.symbol == "" then
        return tools.format_error("'symbol' parameter is required")
    end

    local result, err = tools.request("query:callers", {
        symbol = arguments.symbol,
        depth = arguments.depth or 3,
        project = arguments.project,
    })

    if err then return tools.format_error(err) end

    local lines = {}
    table.insert(lines, "# Callers of " .. result.name)
    table.insert(lines, "")

    local tree_lines = fmt.render_tree(result, {max_depth = arguments.depth or 3})
    for _, l in ipairs(tree_lines) do
        table.insert(lines, l)
    end

    -- Count totals
    local function count_nodes(node)
        local c = #(node.children or {})
        for _, child in ipairs(node.children or {}) do
            c = c + count_nodes(child)
        end
        return c
    end

    local direct = #(result.children or {})
    local total = count_nodes(result)
    table.insert(lines, "")
    table.insert(lines, string.format(
        "Summary: %d direct callers, %d total in chain", direct, total
    ))

    return table.concat(lines, "\n")
end

return { call = call }