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- Committer: Josh C
- Date: 2014-07-05 00:05:23 UTC
- Revision ID: josh@9ix.org-20140705000523-qxhxpi5ixst875zb
control by touch ("mouse")
- files added:
- .bzrignore
- zoetrope/debug
- files removed:
- zoetrope/LICENSE
- files modified:
- Info.plist
added
removed
zoetrope/debug/stepper.lua
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-- Class: DebugStepper
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-- This lets you pause execution of the app and step through it line by line.
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-- This adds a function, debugger.breakpt(), that triggers this intrument.
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-- Until this is called, the instrument remains hidden.
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DebugStepper = DebugInstrument:extend
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{
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visible = false,
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lineContext = 10,
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width = 'wide',
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_fileCache = {},
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onNew = function (self)
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self.stepIntoButton = self:add(DebugInstrumentButton:new
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{
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label = 'Step Into',
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onMouseUp = function (self)
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debugger._stepPaused = false
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debugger._stepFilter = nil
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end
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})
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self.stepOverButton = self:add(DebugInstrumentButton:new
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{
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label = 'Step Over',
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onMouseUp = function (self)
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debugger._stepPaused = false
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local prevStack = debugger._stepStack()
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debugger._stepFilter = function (stack)
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for i = 1, #stack - #prevStack do
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local match = true
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for j = 1, #prevStack do
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if stack[i + j] ~= prevStack[j] then
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match = false
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break
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end
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end
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-- we are now executing a sub-call;
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-- temporarily disable our line hook until
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-- we return to the previous function
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if match then
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debug.sethook(function()
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local state = debug.getinfo(3, 'f')
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if state.func == prevStack[1] then
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-- we're at least on our old function, but is
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-- the stack depth the same?
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local depth = 1
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while true do
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state = debug.getinfo(3 + depth, 'f')
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if not state then break end
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depth = depth + 1
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end
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if depth == #prevStack then
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debug.sethook(debugger._stepLine, 'l')
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end
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end
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end, 'r')
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return false
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end
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end
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return true
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end
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end
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})
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self.stepOutButton = self:add(DebugInstrumentButton:new
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{
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label = 'Step Out',
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onMouseUp = function (self)
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debugger._stepPaused = false
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local prevStack = debugger._stepStack()
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-- disable our line hook until the current function returns
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debug.sethook(function()
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local depth = 2
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local match = false
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while true do
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local state = debug.getinfo(depth, 'f')
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if not state then
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match = true
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break
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elseif state.func ~= prevStack[depth - 1] then
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break
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end
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depth = depth + 1
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end
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if match then
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debug.sethook(debugger._stepLine, 'l')
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end
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end, 'r')
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end
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})
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self.continueButton = self:add(DebugInstrumentButton:new
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{
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label = 'Continue',
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onMouseUp = function (self)
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debugger._stepPaused = false
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debugger.endBreakpt()
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end
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})
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self.lineHighlight = self:add(Fill:new{ fill = {64, 64, 64}, height = 0, width = 0 })
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self.sourceLines = self:add(Text:new
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{
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font = self.font,
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width = 20,
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align = 'right',
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wordWrap = false,
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})
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self.sourceView = self:add(Text:new{ font = self.font, wordWrap = false })
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self.lineHeight = self.sourceView._fontObj:getHeight()
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self.title.text = 'Source'
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self.contentHeight = self.lineHeight * (self.lineContext + 1) * 2 + self.spacing * 3 +
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DebugInstrumentButton.height
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debugger.breakpt = function()
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local print = debugger.unsourcedPrint or print
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local caller = debug.getinfo(2, 'S')
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debugger.showConsole()
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self.visible = true
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print('\n' .. string.rep('=', 40))
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print('Breakpoint, ' .. caller.short_src .. ', ' .. caller.linedefined)
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print(string.rep('=', 40))
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debug.sethook(debugger._stepLine, 'l')
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end
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debugger.endBreakpt = function()
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self.visible = false
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if debugger.hideStack then debugger.hideStack() end
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if debugger.hideLocals then debugger.hideLocals() end
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debugger.hideConsole()
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debug.sethook()
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end
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-- hook to handle stepping over source
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debugger._stepLine = function (_, line)
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local state = debug.getinfo(2, 'Sl')
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if string.find(state.source, 'zoetrope/debug') or
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(debugger._stepFilter and not debugger._stepFilter(debugger._stepStack())) then
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--print('skipping', state.source, state.currentline, #debugger._stepStack())
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return
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end
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if debugger.showStack then debugger.showStack(4) end
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if debugger.showLocals then debugger.showLocals(4) end
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local file = string.match(state.source, '^@(.*)')
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self:showLine(file, line)
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debugger._stepPaused = true
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local quit = false
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while debugger._stepPaused and not quit do
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quit = debugger._miniEventLoop()
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end
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if quit then
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debug.sethook()
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love.event.quit()
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end
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end
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-- returns a table representing the call stack during a source step
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debugger._stepStack = function()
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local level = 2
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local result = {}
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local info = {}
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local afterHook = false
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while true do
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info = debug.getinfo(level, 'f')
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if not info then break end
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if afterHook then
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table.insert(result, info.func)
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elseif info.func == debugger._stepLine then
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afterHook = true
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end
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level = level + 1
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end
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return result
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end
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end,
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onResize = function (self, x, y, width, height)
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self.sourceLines.x = x + self.spacing
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self.sourceLines.y = y + self.spacing
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self.sourceLines.height = height - self.sourceLines.y - self.spacing
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self.sourceView.x = self.sourceLines.x + self.sourceLines.width + self.spacing
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self.sourceView.y = self.sourceLines.y
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self.sourceView.width = width - self.sourceView.x - self.spacing * 2
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self.sourceView.height = self.sourceLines.height
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self.lineHighlight.x = x + self.spacing
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self.lineHighlight.y = self.sourceLines.y + self.lineHeight * self.lineContext
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self.lineHighlight.width = width - self.spacing * 2
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self.lineHighlight.height = self.lineHeight
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self.stepIntoButton.x = self.sourceLines.x
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self.stepIntoButton.y = self.sourceView.y + self.sourceView.height + self.spacing
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self.stepOverButton.x = self.stepIntoButton.x + self.stepIntoButton.width + self.spacing
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self.stepOverButton.y = self.stepIntoButton.y
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self.stepOutButton.x = self.stepOverButton.x + self.stepOverButton.width + self.spacing
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self.stepOutButton.y = self.stepOverButton.y
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self.continueButton.x = width - self.stepOverButton.width
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self.continueButton.y = self.stepOverButton.y
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end,
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showLine = function (self, file, line)
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if file then
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self.sourceLines.text = ''
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self.sourceView.text = ''
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for i = line - self.lineContext, line + self.lineContext + 1 do
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local source = debugger.sourceLine(file, i)
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if source then
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self.sourceLines.text = self.sourceLines.text .. i .. '\n'
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self.sourceView.text = self.sourceView.text .. string.gsub(debugger.sourceLine(file, i), '\t', string.rep(' ', 4)) .. '\n'
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end
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end
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self.title.text = file .. ':' .. line
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else
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self.title.text = 'Source'
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self.sourceView.text = '(source not available)'
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end
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end
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}
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