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Add spark grammar debugging. Start to comment grammer construct covered

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by simple tests.
This commit is contained in:
rocky
2015-12-17 12:44:40 -05:00
parent 3604933a74
commit 29f02edf79
15 changed files with 41 additions and 16 deletions
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14
uncompyle6/parsers/spark.py
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@@ -56,13 +56,14 @@ class GenericParser:
Parsing", unpublished paper, 2001.
'''
def __init__(self, start):
def __init__(self, start, debug=False):
self.rules = {}
self.rule2func = {}
self.rule2name = {}
self.collectRules()
self.augment(start)
self.ruleschanged = 1
self.ruleschanged = True
self.debug = debug
_NULLABLE = '\e_'
_START = 'START'
@@ -82,7 +83,7 @@ class GenericParser:
self.newrules = {}
self.new2old = {}
self.makeNewRules()
self.ruleschanged = 0
self.ruleschanged = False
self.edges, self.cores = {}, {}
self.states = { 0: self.makeState0() }
self.makeState(0, self._BOF)
@@ -149,7 +150,7 @@ class GenericParser:
self.rules[lhs] = [ rule ]
self.rule2func[rule] = fn
self.rule2name[rule] = func.__name__[2:]
self.ruleschanged = 1
self.ruleschanged = True
def collectRules(self):
for name in _namelist(self):
@@ -263,7 +264,7 @@ class GenericParser:
self.newrules = {}
self.new2old = {}
self.makeNewRules()
self.ruleschanged = 0
self.ruleschanged = False
self.edges, self.cores = {}, {}
self.states = { 0: self.makeState0() }
self.makeState(0, self._BOF)
@@ -400,6 +401,7 @@ class GenericParser:
return rv
def gotoT(self, state, t):
if self.debug: print("Terminal", t)
return [self.goto(state, t)]
def gotoST(self, state, st):
@@ -565,6 +567,8 @@ class GenericParser:
return self.rule2func[self.new2old[rule]](attr)
def buildTree(self, nt, item, tokens, k):
if self.debug:
print("NT", nt)
state, parent = item
choices = []