VSCode problemmatcher regex not matching my error output - visual-studio-code

Question

I am trying to match errors of this format for the VSCode ProblemMatcher...
C:\projects\folder\main.cpp(6) : Error[AA000]: identifier "level2" is undefined
C:\projects\folder\main.cpp(7) : Error[AA000]: identifier "level3" is undefined
With regex101.com I am able to match what I need with this regex...
^([][{} \t#%$~A-Za-z0-9_:+\.-\\]+)\(([0-9]+)\) (:) (Warning|Error)(.*)$
Alas, when put into my tasks.json file with the (hopefully) correct escape slashes I don't receive any output in the Problems tab after running the task that will generate these errors in the terminal of VSCode.
// See https://go.microsoft.com/fwlink/?LinkId=733558
// for the documentation about the tasks.json format
"version": "2.0.0",
"tasks": [
{
"label": "build simple regex",
"type": "shell",
"command": "iarbuild iar_ewb_build_timer.ewp -make Debug -log errors -parallel 8",
"group": {
"kind": "build",
"isDefault": true
},
"problemMatcher": {
"fileLocation": "absolute",
"pattern": {
"regexp": "^([][{} \\t#%$~A-Za-z0-9_:+\\.-\\\\]+)\\(([0-9]+)\\) (:) (Warning|Error)(.*)$",
"file": 1,
"line": 2,
"severity": 4,
"message": 5
}
}
},
]
}
Perhaps there is a problem with my Regex. Any help?

Answer 1

I was able to get this working for example error codes in my original post. Thank you for the replies!
{
// See https://go.microsoft.com/fwlink/?LinkId=733558
// for the documentation about the tasks.json format
"version": "2.0.0",
"tasks": [
{
"label": "build simple regex",
"type": "shell",
"command": "iarbuild iar_ewb_build_timer.ewp -make Debug -log errors -parallel 8",
"group": {
"kind": "build",
"isDefault": true
},
"problemMatcher": {
"fileLocation": "absolute",
"pattern": {
"regexp": "^([#%$~A-Za-z0-9_:+-\\\\]+)[(]([0-9]+)[)] (:) (Warning|Error)(.*)$",
"file": 1,
"line": 2,
"severity": 4,
"message": 5
}
}
},
]
}