45 lines
1.8 KiB
Python
45 lines
1.8 KiB
Python
from typing import Union, List, Any
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import numpy as np
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import interpreter.imageWrapper as imageWrapper
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import interpreter.colors as colors
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import interpreter.movement as movement
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import interpreter.tokens as tokens
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import interpreter.errors as errors
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from interpreter.dataStructures import edge
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def edgeToToken(image: np.ndarray, inputEdge: edge) -> Union[tokens.baseLexerToken, BaseException]:
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"""
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This function creates a token based on the given edge
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:param image: input image
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:param inputEdge: an edge containing (coords, direction)
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:return: Either a newly created token, or an exception
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"""
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if not imageWrapper.boundsChecker(image, inputEdge.edge[0]):
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return IndexError("Edge position {} is not in image".format(inputEdge.edge[0]))
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nextPosition = movement.getNextPosition(inputEdge.edge[0], inputEdge.edge[1].pointers[0])
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if not imageWrapper.boundsChecker(image, nextPosition):
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return tokens.toBlackToken("edge")
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pixel = imageWrapper.getPixel(image, nextPosition)
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if colors.isBlack(pixel):
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return tokens.toBlackToken("toBlack")
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if colors.isWhite(pixel):
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return tokens.toWhiteToken()
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if not colors.isColor(pixel):
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return tokens.toBlackToken("Unknown color")
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colorChange = colors.getPixelChange(imageWrapper.getPixel(image, inputEdge.edge[0]), imageWrapper.getPixel(image, nextPosition))
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if isinstance(colorChange, BaseException):
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# Modify existing error message with location
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newText = "{} at position {}".format(colorChange.args[0], nextPosition)
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return errors.UnknownColorError(newText)
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tokenType = tokens.getTokenType(colorChange['hueChange'], colorChange['lightChange'])
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return tokens.toColorToken(tokenType, len(imageWrapper.getCodel(image, inputEdge.edge[0]).codel))
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