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kvTest.py
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kvTest.py
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import sys
import os.path
import antlr3
import kvlang
from kvlang.kvLexer import kvLexer
from kvlang.kvTree import Node, WidgetLikeNode
from kvlang.kvParser import kvParser
from kvlang.kvTokenSource import kvTokenSource
debug = 'debug' in sys.argv
if debug:
sys.argv.remove('debug')
def loadtokens():
tokens = {}
for line in open(os.path.join(os.path.dirname(kvlang.__file__), 'kv.tokens')):
name, _, id = line.partition('=')
tokens[int(id)] = name
return tokens
tokens = loadtokens()
def printtoken(token):
try:
tval = str(token).split(',')
toktype = tokens[int((tval[-1] if tval[-1][0] == '<' else tval[-2])[1:-1])]
print toktype + '\t' + ','.join(tval)
except Exception:
print 'UNKNOWN\t' + str(token)
def parsefile(filename):
cStream = antlr3.ANTLRFileStream(filename)
lexer = kvLexer(cStream)
if debug:
print 'Lexer'
print '-----'
for token in lexer:
printtoken(token)
print
lexer.reset()
tokens = antlr3.CommonTokenStream(lexer)
if debug:
print 'Initial Token Stream'
print '--------------------'
token_list = tokens.getTokens()
for token in token_list:
printtoken(token)
print
tokens.discardOffChannelTokens = True
indentedSource = kvTokenSource(tokens)
tokens = antlr3.CommonTokenStream(indentedSource)
if debug:
print 'Token Stream'
print '------------'
for token in tokens.getTokens():
printtoken(token)
print
Node.set_source(tokens.getTokens(), file(filename).read())
parser = kvParser(tokens)
result = parser.kvfile()
return result
def printresult(result):
print 'Parser Result'
print '-------------'
from pprint import pprint
if hasattr(result, 'tree'):
if result.tree is not None:
pprint(buildtree(result.tree))
else:
pprint(repr(result))
print '--'
print result.tree.toStringTree()
print '--'
pprint(buildwidgettree(result.tree))
def buildtree(tree):
if tree.isNil():
return _buildtree(tree.getChildren())
else:
return _buildtree([tree])
def _buildtree(nodes):
d = []
for child in nodes:
text = str(child)
if child.getChildCount():
d.append((text, _buildtree(child.getChildren())))
else:
d.append(text)
return d
def buildwidgettree(tree):
if tree.isNil():
return _buildwidgettree(tree.getChildren())
else:
return _buildwidgettree([tree])
def _buildwidgettree(nodes):
d = []
for child in nodes:
text = str(child)
if isinstance(child, WidgetLikeNode):
d.append((text, {'properties': _buildproperties(child),
'canvas': _buildcanvas(child),
'widgets': _buildwidgets(child)}))
elif child.getChildCount():
d.append((text, _buildwidgettree(child.getChildren())))
else:
d.append(text)
return d
def _buildproperties(node):
d = {}
for prop in node.properties():
d[prop.name] = prop.value
return d
def _buildcanvas(node):
d = []
for canvas in node.canvasblocks():
d.append((str(canvas), _buildwidgettree(canvas.getChildren())))
return d
def _buildwidgets(node):
d = []
for widget in node.widgets():
d.append(_buildwidgettree([widget]))
return d
if __name__ == '__main__':
printresult(parsefile(sys.argv[1] if len(sys.argv) > 1 else 'test.kv'))