Mercurial > lcfOS
view python/ppci/errors.py @ 297:a6f61e9a9d5c
Added docs requirements
author | Windel Bouwman |
---|---|
date | Sun, 01 Dec 2013 17:35:54 +0100 |
parents | 9417caea2eb3 |
children | 0615b5308710 |
line wrap: on
line source
""" Error handling routines Diagnostic utils """ import logging from . import SourceLocation class CompilerError(Exception): def __init__(self, msg, loc=None): self.msg = msg self.loc = loc if loc: assert type(loc) is SourceLocation, \ '{0} must be SourceLocation'.format(type(loc)) self.row = loc.row self.col = loc.col else: self.row = self.col = 0 def __repr__(self): return '"{}"'.format(self.msg) class DiagnosticsManager: def __init__(self): self.diags = [] self.sources = {} self.logger = logging.getLogger('diagnostics') def addSource(self, name, src): self.logger.info('Adding source {}'.format(name)) self.sources[name] = src def addDiag(self, d): #self.logger.warning(str(d.msg)) self.diags.append(d) def error(self, msg, loc): self.addDiag(CompilerError(msg, loc)) def clear(self): del self.diags[:] self.sources.clear() def printErrors(self): if len(self.diags) > 0: print('{0} Errors'.format(len(self.diags))) for d in self.diags: self.printError(d) def printError(self, e): def printLine(row, txt): print(str(row)+':'+txt) print('==============') if not e.loc: print('Error: {0}'.format(e)) else: if e.loc.filename not in self.sources: print('Error: {0}'.format(e)) return print("File: {}".format(e.loc.filename)) source = self.sources[e.loc.filename] lines = source.split('\n') ro, co = e.row, e.col prerow = ro - 2 if prerow < 1: prerow = 1 afterrow = ro + 3 if afterrow > len(lines): afterrow = len(lines) # print preceding source lines: for r in range(prerow, ro): printLine(r, lines[r-1]) # print source line containing error: printLine(ro, lines[ro-1]) print(' '*(len(str(ro)+':')+co-1) + '^ Error: {0}'.format(e.msg)) # print trailing source line: for r in range(ro+1, afterrow+1): printLine(r, lines[r-1]) print('==============')