getSyntaxHint.py 文件源码

def getTextDiff(code1, code2):
    differ = difflib.Differ()
    changes = []
    codeTokens1 = smartSplit(code1)
    tokens1 = [t[0] for t in codeTokens1]
    codeTokens2 = smartSplit(code2)
    tokens2 = [t[0] for t in codeTokens2]
    dif = differ.compare(tokens1, tokens2)
    j = 0
    type = ""
    text = ""
    line = 0
    col = 0
    totalCol = 0
    for chr in dif:
        changeType = chr[0]
        changeChr = chr[2:]
        if changeType != type or (len(text) > 0 and text[-1] == "\n"):
            if text != "":
                changes.append(SyntaxEdit(line, col, totalCol, type, text))
            text = ""
            type = changeType
            if changeType in ["-", "+"]:
                text = changeChr
                if j < len(codeTokens1):
                    line = codeTokens1[j][1]
                    col = codeTokens1[j][2]
                    totalCol = codeTokens1[j][3]
                else:
                    line = codeTokens1[j-1][1]
                    col = codeTokens1[j-1][2] + len(codeTokens1[j-1][0])
                    totalCol = codeTokens1[j-1][3] + len(codeTokens1[j-1][0])
        else:
            if changeType in ["-", "+"]:
                text += changeChr
        if changeType in ["-", " "]:
            j += 1 # move forward in the codeTokens list
    if text != "":
        changes.append(SyntaxEdit(line, col, totalCol, type, text))
    return changes