Parse error message and pretty-print its stack trace

[janodvarko]

Identify error message in logged object parse associated stack-frames and pretty print in the UI (PropertyTree).

Error message example:

"[JavaScript Error: "Error occurred while creating actor 'undefined: Error: Unable to load actor module 'resource://firebug-next-at-getfirebug-dot-com/data/logger-actor.js'.\nModule resource://firebug-next-at-getfirebug-dot-com/data/logger-actor.js is not found at resource://firebug-next-at-getfirebug-dot-com/data/logger-actor.js\nRegisteredActorFactory/this._getConstructor@resource://gre/modules/devtools/server/actors/common.js:42:15\nObservedActorFactory.prototype.createActor@resource://gre/modules/devtools/server/actors/common.js:108:11\nDebuggerServerConnection.prototype._getOrCreateActor@resource://gre/modules/devtools/server/main.js:1259:16\nDSC_onPacket@resource://gre/modules/devtools/server/main.js:1404:17\nLocalDebuggerTransport.prototype.send/<@resource://gre/modules/devtools/transport/transport.js:545:11\nmakeInfallible/<@resource://gre/modules/devtools/DevToolsUtils.js:83:14\nmakeInfallible/<@resource://gre/modules/devtools/DevToolsUtils.js:83:14\n\n\nStack: RegisteredActorFactory/this._getConstructor@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/common.js:44:15\nObservedActorFactory.prototype.createActor@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/common.js:108:11\nDebuggerServerConnection.prototype._getOrCreateActor@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/main.js:1259:16\nDSC_onPacket@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/main.js:1404:17\nLocalDebuggerTransport.prototype.send/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/transport/transport.js:545:11\nmakeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:83:14\nmakeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:83:14\nLine: 44, column: 14" {file: "resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/main.js" line: 1290}]"

[janodvarko]

@fflorent @simonlindholm any tips how to do this using reg expr?

What we need is to extract the stack-frame info from the error message

Honza

[simonlindholm]

Doesn't the object we get when catching JavaScript Errors contain a stack property or so already, which we can parse using the same method as for error.stack in the property view? Either way, this would actually be very readable already if we didn't escape the \n. Maybe we can just try not doing that (when the message is sufficiently expanded).

[janodvarko]

Doesn't the object we get when catching JavaScript Errors contain a stack property or so already,

No

Either way, this would actually be very readable already if we didn't escape the \n

Not sure what exact escaping do you have in mind.

Honza

[simonlindholm]

We show newlines as \n instead of as newlines, when within quote marks.

[janodvarko]

We show newlines as \n instead of as newlines, when within quote marks.

Sounds like something we should fix. Can you take a look at that?

Honza