markdown_it.rules_inline.text_collapse 源代码

from .state_inline import StateInline


[文档]def text_collapse(state: StateInline, *args): """ Clean up tokens after emphasis and strikethrough postprocessing: merge adjacent text nodes into one and re-calculate all token levels This is necessary because initially emphasis delimiter markers (``*, _, ~``) are treated as their own separate text tokens. Then emphasis rule either leaves them as text (needed to merge with adjacent text) or turns them into opening/closing tags (which messes up levels inside). """ level = 0 maximum = len(state.tokens) curr = last = 0 while curr < maximum: # re-calculate levels after emphasis/strikethrough turns some text nodes # into opening/closing tags if state.tokens[curr].nesting < 0: level -= 1 # closing tag state.tokens[curr].level = level if state.tokens[curr].nesting > 0: level += 1 # opening tag if ( state.tokens[curr].type == "text" and curr + 1 < maximum and state.tokens[curr + 1].type == "text" ): # collapse two adjacent text nodes state.tokens[curr + 1].content = ( state.tokens[curr].content + state.tokens[curr + 1].content ) else: if curr != last: state.tokens[last] = state.tokens[curr] last += 1 curr += 1 if curr != last: del state.tokens[last:]