markdown_it.rules_block.lheading 源代码

# lheading (---, ==)
import logging

from ..ruler import Ruler
from .state_block import StateBlock

LOGGER = logging.getLogger(__name__)


[文档]def lheading(state: StateBlock, startLine: int, endLine: int, silent: bool): LOGGER.debug("entering lheading: %s, %s, %s, %s", state, startLine, endLine, silent) level = None nextLine = startLine + 1 ruler: Ruler = state.md.block.ruler terminatorRules = ruler.getRules("paragraph") # if it's indented more than 3 spaces, it should be a code block if state.sCount[startLine] - state.blkIndent >= 4: return False oldParentType = state.parentType state.parentType = "paragraph" # use paragraph to match terminatorRules # jump line-by-line until empty one or EOF while nextLine < endLine and not state.isEmpty(nextLine): # this would be a code block normally, but after paragraph # it's considered a lazy continuation regardless of what's there if state.sCount[nextLine] - state.blkIndent > 3: nextLine += 1 continue # Check for underline in setext header if state.sCount[nextLine] >= state.blkIndent: pos = state.bMarks[nextLine] + state.tShift[nextLine] maximum = state.eMarks[nextLine] if pos < maximum: marker = state.srcCharCode[pos] # /* - */ /* = */ if marker == 0x2D or marker == 0x3D: pos = state.skipChars(pos, marker) pos = state.skipSpaces(pos) # /* = */ if pos >= maximum: level = 1 if marker == 0x3D else 2 break # quirk for blockquotes, this line should already be checked by that rule if state.sCount[nextLine] < 0: nextLine += 1 continue # Some tags can terminate paragraph without empty line. terminate = False for terminatorRule in terminatorRules: if terminatorRule(state, nextLine, endLine, True): terminate = True break if terminate: break nextLine += 1 if not level: # Didn't find valid underline return False content = state.getLines(startLine, nextLine, state.blkIndent, False).strip() state.line = nextLine + 1 token = state.push("heading_open", "h" + str(level), 1) token.markup = chr(marker) token.map = [startLine, state.line] token = state.push("inline", "", 0) token.content = content token.map = [startLine, state.line - 1] token.children = [] token = state.push("heading_close", "h" + str(level), -1) token.markup = chr(marker) state.parentType = oldParentType return True