Extensive TokenStreamRewriter tests + many python2 runtime fixes.
Including fix for https://github.com/antlr/antlr4/issues/550
This commit is contained in:
Vladi Lyga
parent
c695ed25e9
commit
238b55a0b6
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@ -295,14 +295,20 @@ class BufferedTokenStream(TokenStream):
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# Get the text of all tokens in this buffer.#/
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def getText(self, interval=None):
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"""
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:param interval:
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:type interval: antlr4.IntervalSet.Interval
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:return:
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"""
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self.lazyInit()
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self.fill()
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if interval is None:
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interval = (0, len(self.tokens)-1)
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start = interval[0]
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start = interval.start
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if isinstance(start, Token):
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start = start.tokenIndex
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stop = interval[1]
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stop = interval.stop
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if isinstance(stop, Token):
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stop = stop.tokenIndex
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if start is None or stop is None or start<0 or stop<0:
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@ -1,8 +1,37 @@
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"""
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[The "BSD license"]
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Copyright (c) 2012 Terence Parr
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Copyright (c) 2012 Sam Harwell
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""
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from StringIO import StringIO
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from antlr4.Token import Token
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from antlr4.CommonTokenStream import CommonTokenStream
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from antlr4.IntervalSet import Interval
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class TokenStreamRewriter(object):
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DEFAULT_PROGRAM_NAME = "default"
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@ -35,7 +64,10 @@ class TokenStreamRewriter(object):
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self.insertAfter(token.tokenIndex, text, program_name)
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def insertAfter(self, index, text, program_name=DEFAULT_PROGRAM_NAME):
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self.insertBefore(program_name, index + 1, text)
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op = self.InsertAfterOp(self.tokens, index + 1, text)
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rewrites = self.getProgram(program_name)
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op.instructionIndex = len(rewrites)
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rewrites.append(op)
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def insertBeforeIndex(self, index, text):
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self.insertBefore(self.DEFAULT_PROGRAM_NAME, index, text)
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@ -78,8 +110,8 @@ class TokenStreamRewriter(object):
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def delete(self, program_name, from_idx, to_idx):
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if isinstance(from_idx, Token):
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self.replace(program_name, from_idx.tokenIndex, to_idx.tokenIndex, None)
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self.replace(program_name, from_idx, to_idx, None)
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self.replace(program_name, from_idx.tokenIndex, to_idx.tokenIndex, "")
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self.replace(program_name, from_idx, to_idx, "")
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def lastRewriteTokenIndex(self, program_name=DEFAULT_PROGRAM_NAME):
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return self.lastRewriteTokenIndexes.get(program_name, -1)
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@ -90,6 +122,9 @@ class TokenStreamRewriter(object):
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def getProgram(self, program_name):
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return self.programs.setdefault(program_name, [])
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def getDefaultText(self):
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return self.getText(self.DEFAULT_PROGRAM_NAME, Interval(0, len(self.tokens.tokens)))
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def getText(self, program_name, interval):
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"""
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:type interval: Interval.Interval
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@ -111,7 +146,7 @@ class TokenStreamRewriter(object):
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indexToOp = self._reduceToSingleOperationPerIndex(rewrites)
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i = start
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while all((i <= stop, i < len(self.tokens.tokens))):
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op = indexToOp.get(i)
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op = indexToOp.pop(i, None)
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token = self.tokens.get(i)
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if op is None:
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if token.type != Token.EOF: buf.write(token.text)
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@ -119,9 +154,10 @@ class TokenStreamRewriter(object):
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else:
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i = op.execute(buf)
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if stop == len(self.tokens.tokens)-1:
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for op in indexToOp.itervalues():
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if op.index >= len(self.tokens.tokens)-1: buf.write(op.text)
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if stop == len(self.tokens.tokens) - 1:
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for op in indexToOp.values():
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if op.index >= len(self.tokens.tokens) - 1: buf.write(
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op.text) # TODO: this check is probably not needed
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return buf.getvalue()
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@ -131,7 +167,7 @@ class TokenStreamRewriter(object):
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if any((rop is None, not isinstance(rop, TokenStreamRewriter.ReplaceOp))):
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continue
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# Wipe prior inserts within range
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inserts = [op for op in rewrites[:i] if isinstance(rop, TokenStreamRewriter.InsertBeforeOp)]
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inserts = [op for op in rewrites[:i] if type(op) is TokenStreamRewriter.InsertBeforeOp]
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for iop in inserts:
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if iop.index == rop.index:
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rewrites[iop.instructionIndex] = None
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@ -140,38 +176,41 @@ class TokenStreamRewriter(object):
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rewrites[iop.instructionIndex] = None
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# Drop any prior replaces contained within
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prevReplaces = [op for op in rewrites[:i] if isinstance(op, TokenStreamRewriter.ReplaceOp)]
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prevReplaces = [op for op in rewrites[:i] if type(op) is TokenStreamRewriter.ReplaceOp]
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for prevRop in prevReplaces:
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if all((prevRop.index >= rop.index, prevRop.last_index <= rop.last_index)):
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rewrites[prevRop.instructioIndex] = None
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rewrites[prevRop.instructionIndex] = None
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continue
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isDisjoint = any((prevRop.last_index<rop.index, prevRop.index>rop))
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isDisjoint = any((prevRop.last_index < rop.index, prevRop.index > rop.last_index))
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isSame = all((prevRop.index == rop.index, prevRop.last_index == rop.last_index))
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if all((prevRop.text is None, rop.text is None, not isDisjoint)):
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rewrites[prevRop.instructioIndex] = None
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rewrites[prevRop.instructionIndex] = None
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rop.index = min(prevRop.index, rop.index)
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rop.last_index = min(prevRop.last_index, rop.last_index)
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print('New rop {}'.format(rop))
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elif not all((isDisjoint, isSame)):
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raise ValueError("replace op boundaries of {} overlap with previous {}".format(rop, prevRop))
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# Walk inserts
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# Walk inserts before
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for i, iop in enumerate(rewrites):
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if any((iop is None, not isinstance(iop, TokenStreamRewriter.InsertBeforeOp))):
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continue
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prevInserts = [op for op in rewrites[:i] if isinstance(iop, TokenStreamRewriter.InsertBeforeOp)]
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for prevIop in prevInserts:
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if prevIop.index == iop.index:
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prevInserts = [op for op in rewrites[:i] if isinstance(op, TokenStreamRewriter.InsertBeforeOp)]
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for i, prevIop in enumerate(prevInserts):
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if prevIop.index == iop.index and type(prevIop) is TokenStreamRewriter.InsertBeforeOp:
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iop.text += prevIop.text
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rewrites[i] = None
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elif prevIop.index == iop.index and type(prevIop) is TokenStreamRewriter.InsertAfterOp:
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iop.text = prevIop.text + iop.text
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rewrites[i] = None
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# look for replaces where iop.index is in range; error
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prevReplaces = [op for op in rewrites[:i] if isinstance(rop, TokenStreamRewriter.ReplaceOp)]
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prevReplaces = [op for op in rewrites[:i] if type(op) is TokenStreamRewriter.ReplaceOp]
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for rop in prevReplaces:
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if iop.index == rop.index:
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rop.text = iop.text + rop.text
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rewrites[i] = None
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continue
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if all((iop.index >= rop.index, iop.index <= rop.index)):
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if all((iop.index >= rop.index, iop.index <= rop.last_index)):
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raise ValueError("insert op {} within boundaries of previous {}".format(iop, rop))
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reduced = {}
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@ -206,7 +245,7 @@ class TokenStreamRewriter(object):
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return self.index
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def __str__(self):
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pass
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return '<{}@{}:"{}">'.format(self.__class__.__name__, self.tokens.get(self.index), self.text)
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class InsertBeforeOp(RewriteOperation):
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@ -219,6 +258,9 @@ class TokenStreamRewriter(object):
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buf.write(self.tokens.get(self.index).text)
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return self.index + 1
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class InsertAfterOp(InsertBeforeOp):
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pass
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class ReplaceOp(RewriteOperation):
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def __init__(self, from_idx, to_idx, tokens, text):
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@ -229,3 +271,8 @@ class TokenStreamRewriter(object):
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if self.text:
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buf.write(self.text)
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return self.last_index + 1
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def __str__(self):
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if self.text:
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return '<ReplaceOp@{}..{}:"{}">'.format(self.tokens.get(self.index), self.tokens.get(self.last_index),
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self.text)
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@ -0,0 +1,548 @@
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"""
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[The "BSD license"]
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Copyright (c) 2012 Terence Parr
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Copyright (c) 2012 Sam Harwell
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""
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import unittest
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from antlr4.IntervalSet import Interval
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from mocks.TestLexer import TestLexer, TestLexer2
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from antlr4.TokenStreamRewriter import TokenStreamRewriter
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from antlr4.InputStream import InputStream
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from antlr4.CommonTokenStream import CommonTokenStream
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class TestTokenStreamRewriter(unittest.TestCase):
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def testInsertBeforeIndexZero(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.insertBeforeIndex(0, '0')
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self.assertEquals(rewriter.getDefaultText(), '0abc')
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def testInsertAfterLastIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.insertAfter(10, 'x')
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self.assertEquals(rewriter.getDefaultText(), 'abcx')
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def test2InsertBeforeAfterMiddleIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.insertBeforeIndex(1, 'x')
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rewriter.insertAfter(1, 'x')
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self.assertEquals(rewriter.getDefaultText(), 'axbxc')
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def testReplaceIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.replaceIndex(0, 'x')
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self.assertEquals(rewriter.getDefaultText(), 'xbc')
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def testReplaceLastIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.replaceIndex(2, 'x')
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self.assertEquals(rewriter.getDefaultText(), 'abx')
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def testReplaceMiddleIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.replaceIndex(1, 'x')
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self.assertEquals(rewriter.getDefaultText(), 'axc')
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def testToStringStartStop(self):
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input = InputStream('x = 3 * 0;')
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lexer = TestLexer2(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.replaceRange(4, 8, '0')
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self.assertEquals(rewriter.getDefaultText(), 'x = 0;')
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self.assertEquals(rewriter.getText('default', Interval(0, 9)), 'x = 0;')
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self.assertEquals(rewriter.getText('default', Interval(4, 8)), '0')
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def testToStringStartStop2(self):
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input = InputStream('x = 3 * 0 + 2 * 0;')
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lexer = TestLexer2(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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self.assertEquals('x = 3 * 0 + 2 * 0;', rewriter.getDefaultText())
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# replace 3 * 0 with 0
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rewriter.replaceRange(4, 8, '0')
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self.assertEquals('x = 0 + 2 * 0;', rewriter.getDefaultText())
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self.assertEquals('x = 0 + 2 * 0;', rewriter.getText('default', Interval(0, 17)))
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self.assertEquals('0', rewriter.getText('default', Interval(4, 8)))
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self.assertEquals('x = 0', rewriter.getText('default', Interval(0, 8)))
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self.assertEquals('2 * 0', rewriter.getText('default', Interval(12, 16)))
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rewriter.insertAfter(17, "// comment")
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self.assertEquals('2 * 0;// comment', rewriter.getText('default', Interval(12, 18)))
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self.assertEquals('x = 0', rewriter.getText('default', Interval(0, 8)))
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def test2ReplaceMiddleIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.replaceIndex(1, 'x')
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rewriter.replaceIndex(1, 'y')
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self.assertEquals('ayc', rewriter.getDefaultText())
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def test2ReplaceMiddleIndex1InsertBefore(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.insertBeforeIndex(0, "_")
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rewriter.replaceIndex(1, 'x')
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rewriter.replaceIndex(1, 'y')
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self.assertEquals('_ayc', rewriter.getDefaultText())
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def test2InsertMiddleIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.insertBeforeIndex(1, 'x')
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rewriter.insertBeforeIndex(1, 'y')
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self.assertEquals('ayxbc', rewriter.getDefaultText())
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def testReplaceThenDeleteMiddleIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.replaceRange(0, 2, 'x')
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rewriter.insertBeforeIndex(1, '0')
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with self.assertRaises(ValueError) as ctx:
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rewriter.getDefaultText()
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self.assertEquals(
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'insert op <InsertBeforeOp@[@1,1:1=\'b\',<2>,1:1]:"0"> within boundaries of previous <ReplaceOp@[@0,0:0=\'a\',<1>,1:0]..[@2,2:2=\'c\',<3>,1:2]:"x">',
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ctx.exception.message
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)
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def testInsertThenReplaceSameIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.insertBeforeIndex(0, '0')
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rewriter.replaceIndex(0, 'x')
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self.assertEquals('0xbc', rewriter.getDefaultText())
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def test2InsertThenReplaceIndex0(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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stream.fill()
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rewriter = TokenStreamRewriter(tokens=stream)
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rewriter.insertBeforeIndex(0, 'x')
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rewriter.insertBeforeIndex(0, 'y')
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rewriter.replaceIndex(0, 'z')
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self.assertEquals('yxzbc', rewriter.getDefaultText())
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def testReplaceThenInsertBeforeLastIndex(self):
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input = InputStream('abc')
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lexer = TestLexer(input)
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stream = CommonTokenStream(lexer=lexer)
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||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceIndex(2, 'x')
|
||||
rewriter.insertBeforeIndex(2, 'y')
|
||||
|
||||
self.assertEquals('abyx', rewriter.getDefaultText())
|
||||
|
||||
def testReplaceThenInsertAfterLastIndex(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceIndex(2, 'x')
|
||||
rewriter.insertAfter(2, 'y')
|
||||
|
||||
self.assertEquals('abxy', rewriter.getDefaultText())
|
||||
|
||||
def testReplaceRangeThenInsertAtLeftEdge(self):
|
||||
input = InputStream('abcccba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(2, 4, 'x')
|
||||
rewriter.insertBeforeIndex(2, 'y')
|
||||
|
||||
self.assertEquals('abyxba', rewriter.getDefaultText())
|
||||
|
||||
def testReplaceRangeThenInsertAtRightEdge(self):
|
||||
input = InputStream('abcccba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(2, 4, 'x')
|
||||
rewriter.insertBeforeIndex(4, 'y')
|
||||
|
||||
with self.assertRaises(ValueError) as ctx:
|
||||
rewriter.getDefaultText()
|
||||
msg = ctx.exception.message
|
||||
self.assertEquals(
|
||||
"insert op <InsertBeforeOp@[@4,4:4='c',<3>,1:4]:\"y\"> within boundaries of previous <ReplaceOp@[@2,2:2='c',<3>,1:2]..[@4,4:4='c',<3>,1:4]:\"x\">",
|
||||
msg
|
||||
)
|
||||
|
||||
def testReplaceRangeThenInsertAfterRightEdge(self):
|
||||
input = InputStream('abcccba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(2, 4, 'x')
|
||||
rewriter.insertAfter(4, 'y')
|
||||
|
||||
self.assertEquals('abxyba', rewriter.getDefaultText())
|
||||
|
||||
def testReplaceAll(self):
|
||||
input = InputStream('abcccba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(0, 6, 'x')
|
||||
|
||||
self.assertEquals('x', rewriter.getDefaultText())
|
||||
|
||||
def testReplaceSubsetThenFetch(self):
|
||||
input = InputStream('abcccba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(2, 4, 'xyz')
|
||||
|
||||
self.assertEquals('abxyzba', rewriter.getDefaultText())
|
||||
|
||||
def testReplaceThenReplaceSuperset(self):
|
||||
input = InputStream('abcccba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(2, 4, 'xyz')
|
||||
rewriter.replaceRange(3, 5, 'foo')
|
||||
|
||||
with self.assertRaises(ValueError) as ctx:
|
||||
rewriter.getDefaultText()
|
||||
msg = ctx.exception.message
|
||||
self.assertEquals(
|
||||
"""replace op boundaries of <ReplaceOp@[@3,3:3='c',<3>,1:3]..[@5,5:5='b',<2>,1:5]:"foo"> overlap with previous <ReplaceOp@[@2,2:2='c',<3>,1:2]..[@4,4:4='c',<3>,1:4]:"xyz">""",
|
||||
msg
|
||||
)
|
||||
|
||||
def testReplaceThenReplaceLowerIndexedSuperset(self):
|
||||
input = InputStream('abcccba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(2, 4, 'xyz')
|
||||
rewriter.replaceRange(1, 3, 'foo')
|
||||
|
||||
with self.assertRaises(ValueError) as ctx:
|
||||
rewriter.getDefaultText()
|
||||
msg = ctx.exception.message
|
||||
self.assertEquals(
|
||||
"""replace op boundaries of <ReplaceOp@[@1,1:1='b',<2>,1:1]..[@3,3:3='c',<3>,1:3]:"foo"> overlap with previous <ReplaceOp@[@2,2:2='c',<3>,1:2]..[@4,4:4='c',<3>,1:4]:"xyz">""",
|
||||
msg
|
||||
)
|
||||
|
||||
def testReplaceSingleMiddleThenOverlappingSuperset(self):
|
||||
input = InputStream('abcba')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceIndex(2, 'xyz')
|
||||
rewriter.replaceRange(0, 3, 'foo')
|
||||
|
||||
self.assertEquals('fooa', rewriter.getDefaultText())
|
||||
|
||||
def testCombineInserts(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.insertBeforeIndex(0, 'x')
|
||||
rewriter.insertBeforeIndex(0, 'y')
|
||||
|
||||
self.assertEquals('yxabc', rewriter.getDefaultText())
|
||||
|
||||
def testCombine3Inserts(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.insertBeforeIndex(1, 'x')
|
||||
rewriter.insertBeforeIndex(0, 'y')
|
||||
rewriter.insertBeforeIndex(1, 'z')
|
||||
|
||||
self.assertEquals('yazxbc', rewriter.getDefaultText())
|
||||
|
||||
def testCombineInsertOnLeftWithReplace(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(0, 2, 'foo')
|
||||
rewriter.insertBeforeIndex(0, 'z')
|
||||
|
||||
self.assertEquals('zfoo', rewriter.getDefaultText())
|
||||
|
||||
def testCombineInsertOnLeftWithDelete(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.delete('default', 0, 2)
|
||||
rewriter.insertBeforeIndex(0, 'z')
|
||||
|
||||
self.assertEquals('z', rewriter.getDefaultText())
|
||||
|
||||
def testDisjointInserts(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.insertBeforeIndex(1, 'x')
|
||||
rewriter.insertBeforeIndex(2, 'y')
|
||||
rewriter.insertBeforeIndex(0, 'z')
|
||||
|
||||
self.assertEquals('zaxbyc', rewriter.getDefaultText())
|
||||
|
||||
def testOverlappingReplace(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
rewriter.replaceRange(0, 3, 'bar')
|
||||
|
||||
self.assertEquals('bar', rewriter.getDefaultText())
|
||||
|
||||
def testOverlappingReplace2(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(0, 3, 'bar')
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
|
||||
with self.assertRaises(ValueError) as ctx:
|
||||
rewriter.getDefaultText()
|
||||
|
||||
self.assertEquals(
|
||||
"""replace op boundaries of <ReplaceOp@[@1,1:1='b',<2>,1:1]..[@2,2:2='c',<3>,1:2]:"foo"> overlap with previous <ReplaceOp@[@0,0:0='a',<1>,1:0]..[@3,3:2='<EOF>',<-1>,1:3]:"bar">""",
|
||||
ctx.exception.message
|
||||
)
|
||||
|
||||
def testOverlappingReplace3(self):
|
||||
input = InputStream('abcc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
rewriter.replaceRange(0, 2, 'bar')
|
||||
|
||||
self.assertEquals('barc', rewriter.getDefaultText())
|
||||
|
||||
def testOverlappingReplace4(self):
|
||||
input = InputStream('abcc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
rewriter.replaceRange(1, 3, 'bar')
|
||||
|
||||
self.assertEquals('abar', rewriter.getDefaultText())
|
||||
|
||||
def testDropIdenticalReplace(self):
|
||||
input = InputStream('abcc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
|
||||
self.assertEquals('afooc', rewriter.getDefaultText())
|
||||
|
||||
def testDropPrevCoveredInsert(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.insertBeforeIndex(1, 'foo')
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
|
||||
self.assertEquals('afoofoo', rewriter.getDefaultText())
|
||||
|
||||
def testLeaveAloneDisjointInsert(self):
|
||||
input = InputStream('abcc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.insertBeforeIndex(1, 'x')
|
||||
rewriter.replaceRange(2, 3, 'foo')
|
||||
|
||||
self.assertEquals('axbfoo', rewriter.getDefaultText())
|
||||
|
||||
def testLeaveAloneDisjointInsert2(self):
|
||||
input = InputStream('abcc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.replaceRange(2, 3, 'foo')
|
||||
rewriter.insertBeforeIndex(1, 'x')
|
||||
|
||||
self.assertEquals('axbfoo', rewriter.getDefaultText())
|
||||
|
||||
def testInsertBeforeTokenThenDeleteThatToken(self):
|
||||
input = InputStream('abc')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.insertBeforeIndex(1, 'foo')
|
||||
rewriter.replaceRange(1, 2, 'foo')
|
||||
|
||||
self.assertEquals('afoofoo', rewriter.getDefaultText())
|
||||
|
||||
# Test for fix for: https://github.com/antlr/antlr4/issues/550
|
||||
def testPreservesOrderOfContiguousInserts(self):
|
||||
input = InputStream('aa')
|
||||
lexer = TestLexer(input)
|
||||
stream = CommonTokenStream(lexer=lexer)
|
||||
stream.fill()
|
||||
rewriter = TokenStreamRewriter(tokens=stream)
|
||||
|
||||
rewriter.insertBeforeIndex(0, '<b>')
|
||||
rewriter.insertAfter(0, '</b>')
|
||||
rewriter.insertBeforeIndex(1, '<b>')
|
||||
rewriter.insertAfter(1, '</b>')
|
||||
|
||||
self.assertEquals('<b>a</b><b>a</b>', rewriter.getDefaultText())
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
unittest.main()
|
||||
|
|
@ -0,0 +1,101 @@
|
|||
# Generated from /Users/lyga/Dropbox/code/python/antlr4-learn/test_grammar/T.g4 by ANTLR 4.5.3
|
||||
# encoding: utf-8
|
||||
from __future__ import print_function
|
||||
from antlr4 import *
|
||||
from io import StringIO
|
||||
|
||||
|
||||
def serializedATN():
|
||||
with StringIO() as buf:
|
||||
buf.write(u"\3\u0430\ud6d1\u8206\uad2d\u4417\uaef1\u8d80\uaadd\2")
|
||||
buf.write(u"\5\17\b\1\4\2\t\2\4\3\t\3\4\4\t\4\3\2\3\2\3\3\3\3\3\4")
|
||||
buf.write(u"\3\4\2\2\5\3\3\5\4\7\5\3\2\2\16\2\3\3\2\2\2\2\5\3\2\2")
|
||||
buf.write(u"\2\2\7\3\2\2\2\3\t\3\2\2\2\5\13\3\2\2\2\7\r\3\2\2\2\t")
|
||||
buf.write(u"\n\7c\2\2\n\4\3\2\2\2\13\f\7d\2\2\f\6\3\2\2\2\r\16\7")
|
||||
buf.write(u"e\2\2\16\b\3\2\2\2\3\2\2")
|
||||
return buf.getvalue()
|
||||
|
||||
|
||||
class TestLexer(Lexer):
|
||||
atn = ATNDeserializer().deserialize(serializedATN())
|
||||
|
||||
decisionsToDFA = [DFA(ds, i) for i, ds in enumerate(atn.decisionToState)]
|
||||
|
||||
A = 1
|
||||
B = 2
|
||||
C = 3
|
||||
|
||||
modeNames = [u"DEFAULT_MODE"]
|
||||
|
||||
literalNames = [u"<INVALID>",
|
||||
u"'a'", u"'b'", u"'c'"]
|
||||
|
||||
symbolicNames = [u"<INVALID>",
|
||||
u"A", u"B", u"C"]
|
||||
|
||||
ruleNames = [u"A", u"B", u"C"]
|
||||
|
||||
grammarFileName = u"T.g4"
|
||||
|
||||
def __init__(self, input=None):
|
||||
super(TestLexer, self).__init__(input)
|
||||
self.checkVersion("4.6")
|
||||
self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
|
||||
self._actions = None
|
||||
self._predicates = None
|
||||
|
||||
|
||||
|
||||
def serializedATN2():
|
||||
with StringIO() as buf:
|
||||
buf.write(u"\3\u0430\ud6d1\u8206\uad2d\u4417\uaef1\u8d80\uaadd\2")
|
||||
buf.write(u"\t(\b\1\4\2\t\2\4\3\t\3\4\4\t\4\4\5\t\5\4\6\t\6\4\7\t")
|
||||
buf.write(u"\7\4\b\t\b\3\2\6\2\23\n\2\r\2\16\2\24\3\3\6\3\30\n\3")
|
||||
buf.write(u"\r\3\16\3\31\3\4\3\4\3\5\3\5\3\6\3\6\3\7\3\7\3\b\6\b")
|
||||
buf.write(u"%\n\b\r\b\16\b&\2\2\t\3\3\5\4\7\5\t\6\13\7\r\b\17\t\3")
|
||||
buf.write(u"\2\2*\2\3\3\2\2\2\2\5\3\2\2\2\2\7\3\2\2\2\2\t\3\2\2\2")
|
||||
buf.write(u"\2\13\3\2\2\2\2\r\3\2\2\2\2\17\3\2\2\2\3\22\3\2\2\2\5")
|
||||
buf.write(u"\27\3\2\2\2\7\33\3\2\2\2\t\35\3\2\2\2\13\37\3\2\2\2\r")
|
||||
buf.write(u"!\3\2\2\2\17$\3\2\2\2\21\23\4c|\2\22\21\3\2\2\2\23\24")
|
||||
buf.write(u"\3\2\2\2\24\22\3\2\2\2\24\25\3\2\2\2\25\4\3\2\2\2\26")
|
||||
buf.write(u"\30\4\62;\2\27\26\3\2\2\2\30\31\3\2\2\2\31\27\3\2\2\2")
|
||||
buf.write(u"\31\32\3\2\2\2\32\6\3\2\2\2\33\34\7=\2\2\34\b\3\2\2\2")
|
||||
buf.write(u"\35\36\7?\2\2\36\n\3\2\2\2\37 \7-\2\2 \f\3\2\2\2!\"\7")
|
||||
buf.write(u",\2\2\"\16\3\2\2\2#%\7\"\2\2$#\3\2\2\2%&\3\2\2\2&$\3")
|
||||
buf.write(u"\2\2\2&\'\3\2\2\2\'\20\3\2\2\2\6\2\24\31&\2")
|
||||
return buf.getvalue()
|
||||
|
||||
|
||||
class TestLexer2(Lexer):
|
||||
|
||||
atn = ATNDeserializer().deserialize(serializedATN2())
|
||||
|
||||
decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]
|
||||
|
||||
|
||||
ID = 1
|
||||
INT = 2
|
||||
SEMI = 3
|
||||
ASSIGN = 4
|
||||
PLUS = 5
|
||||
MULT = 6
|
||||
WS = 7
|
||||
|
||||
modeNames = [ u"DEFAULT_MODE" ]
|
||||
|
||||
literalNames = [ u"<INVALID>",
|
||||
u"';'", u"'='", u"'+'", u"'*'" ]
|
||||
|
||||
symbolicNames = [ u"<INVALID>",
|
||||
u"ID", u"INT", u"SEMI", u"ASSIGN", u"PLUS", u"MULT", u"WS" ]
|
||||
|
||||
ruleNames = [ u"ID", u"INT", u"SEMI", u"ASSIGN", u"PLUS", u"MULT", u"WS" ]
|
||||
|
||||
grammarFileName = u"T2.g4"
|
||||
|
||||
def __init__(self, input=None):
|
||||
super(TestLexer2, self).__init__(input)
|
||||
self.checkVersion("4.6")
|
||||
self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
|
||||
self._actions = None
|
||||
self._predicates = None
|
||||
Loading…
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