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// Parse link label
//
// this function assumes that first character ("[") already matches;
// returns the end of the label
//
export default function parseLinkLabel (state, start, disableNested) {
let level, found, marker, prevPos
const max = state.posMax
const oldPos = state.pos
state.pos = start + 1
level = 1
while (state.pos < max) {
marker = state.src.charCodeAt(state.pos)
if (marker === 0x5D /* ] */) {
level--
if (level === 0) {
found = true
break
}
}
prevPos = state.pos
state.md.inline.skipToken(state)
if (marker === 0x5B /* [ */) {
if (prevPos === state.pos - 1) {
// increase level if we find text `[`, which is not a part of any token
level++
} else if (disableNested) {
state.pos = oldPos
return -1
}
}
}
let labelEnd = -1
if (found) {
labelEnd = state.pos
}
// restore old state
state.pos = oldPos
return labelEnd
}
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