115 lines
3.7 KiB
Lua
115 lines
3.7 KiB
Lua
local LOGGER = require("log")
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--- This is Basalt's error handler. All the errors are handled by this module.
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--- @class ErrorHandler
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--- @field tracebackEnabled boolean If the error handler should print a stack trace
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--- @field header string The header of the error message
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local errorHandler = {
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tracebackEnabled = true,
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header = "Basalt Error"
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}
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local function coloredPrint(message, color)
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term.setTextColor(color)
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print(message)
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term.setTextColor(colors.white)
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end
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--- Handles an error
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--- @param errMsg string The error message
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--- @usage errorHandler.error("An error occurred")
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function errorHandler.error(errMsg)
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if errorHandler.errorHandled then
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error()
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end
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term.setBackgroundColor(colors.black)
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term.clear()
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term.setCursorPos(1, 1)
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coloredPrint(errorHandler.header..":", colors.red)
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print()
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local level = 2
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local topInfo
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while true do
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local info = debug.getinfo(level, "Sl")
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if not info then break end
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topInfo = info
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level = level + 1
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end
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local info = topInfo or debug.getinfo(2, "Sl")
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local fileName = info.source:sub(2)
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local lineNumber = info.currentline
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local errorMessage = errMsg
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if(errorHandler.tracebackEnabled)then
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local stackTrace = debug.traceback()
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if stackTrace then
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--coloredPrint("Stack traceback:", colors.gray)
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for line in stackTrace:gmatch("[^\r\n]+") do
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local fileNameInTraceback, lineNumberInTraceback = line:match("([^:]+):(%d+):")
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if fileNameInTraceback and lineNumberInTraceback then
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term.setTextColor(colors.lightGray)
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term.write(fileNameInTraceback)
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term.setTextColor(colors.gray)
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term.write(":")
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term.setTextColor(colors.lightBlue)
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term.write(lineNumberInTraceback)
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term.setTextColor(colors.gray)
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line = line:gsub(fileNameInTraceback .. ":" .. lineNumberInTraceback, "")
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end
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coloredPrint(line, colors.gray)
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end
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print()
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end
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end
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if fileName and lineNumber then
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term.setTextColor(colors.red)
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term.write("Error in ")
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term.setTextColor(colors.white)
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term.write(fileName)
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term.setTextColor(colors.red)
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term.write(":")
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term.setTextColor(colors.lightBlue)
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term.write(lineNumber)
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term.setTextColor(colors.red)
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term.write(": ")
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if errorMessage then
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errorMessage = string.gsub(errorMessage, "stack traceback:.*", "")
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if errorMessage ~= "" then
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coloredPrint(errorMessage, colors.red)
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else
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coloredPrint("Error message not available", colors.gray)
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end
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else
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coloredPrint("Error message not available", colors.gray)
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end
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local file = fs.open(fileName, "r")
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if file then
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local lineContent = ""
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local currentLineNumber = 1
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repeat
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lineContent = file.readLine()
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if currentLineNumber == tonumber(lineNumber) then
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coloredPrint("\149Line " .. lineNumber, colors.cyan)
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coloredPrint(lineContent, colors.lightGray)
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break
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end
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currentLineNumber = currentLineNumber + 1
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until not lineContent
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file.close()
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end
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end
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term.setBackgroundColor(colors.black)
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LOGGER.error(errMsg)
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errorHandler.errorHandled = true
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error()
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end
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return errorHandler |