diff --git a/private/fastparse.nim b/private/fastparse.nim index 0c35d88..940dc5c 100644 --- a/private/fastparse.nim +++ b/private/fastparse.nim @@ -8,7 +8,7 @@ type FastParseState = enum fpInitial, fpBlockLineStart, fpBlockAfterObject, fpBlockAfterPlainScalar, fpBlockObjectStart, fpBlockContinueScalar, fpExpectDocEnd, fpFlow, - fpFlowAfterObject + fpFlowAfterObject, fpAfterDocument FastParseLevelKind = enum fplUnknown, fplSequence, fplMapKey, fplMapValue, fplSinglePairKey, @@ -872,7 +872,7 @@ template blockScalar(lexer: BaseLexer, content: var string, block outer: while true: block inner: - for i in countup(1, parentIndent): + for i in countup(1, parentIndent + 1): case lexer.buf[lexer.bufpos] of ' ': discard of '\l': @@ -887,8 +887,15 @@ template blockScalar(lexer: BaseLexer, content: var string, stateAfter = if i == 1: fpBlockLineStart else: fpBlockObjectStart break outer lexer.bufpos.inc() + if parentIndent == -1 and lexer.buf[lexer.bufpos] == '.': + var isDocumentEnd: bool + startToken() + lexer.documentEnd(isDocumentEnd) + if isDocumentEnd: + stateAfter = fpExpectDocEnd + break outer if detectedIndent: - for i in countup(1, blockIndent): + for i in countup(1, blockIndent - 1 + max(0, -parentIndent)): case lexer.buf[lexer.bufpos] of ' ': discard of '\l': @@ -911,13 +918,8 @@ template blockScalar(lexer: BaseLexer, content: var string, stateAfter = fpBlockLineStart break outer else: - if i == 1: - stateAfter = if parentIndent <= 0: fpBlockLineStart else: - fpBlockObjectStart - break outer - else: - startToken() - parserError("The text is less indented than expected ") + startToken() + parserError("The text is less indented than expected ") lexer.bufpos.inc() else: while true: @@ -937,8 +939,8 @@ template blockScalar(lexer: BaseLexer, content: var string, else: blockIndent = lexer.getColNumber(lexer.bufpos) - max(0, parentIndent) - if blockIndent == 0: - stateAfter = if blockIndent + max(0, parentIndent) > 0: + if blockIndent == 0 and parentIndent >= 0: + stateAfter = if blockIndent + parentIndent > 0: fpBlockObjectStart else: fpBlockLineStart break outer detectedIndent = true @@ -1000,6 +1002,27 @@ template blockScalar(lexer: BaseLexer, content: var string, of ctStrip: discard debug("lex: \"" & content & '\"') +template consumeLineIfEmpty(lex: BaseLexer): bool = + var result = true + while true: + lex.bufpos.inc() + case lex.buf[lex.bufpos] + of ' ', '\t': discard + of '\l': + lex.bufpos = lex.handleLF(lex.bufpos) + break + of '\c': + lex.bufpos = lex.handleCR(lex.bufpos) + break + of '#', EndOfFile: + lex.lineEnding() + handleLineEnd(false) + break + else: + result = false + break + result + proc parse*(p: YamlParser, s: Stream): YamlStream = var backend = iterator(): YamlStreamEvent = var @@ -1057,25 +1080,10 @@ proc parse*(p: YamlParser, s: Stream): YamlStream = p.lexer.finishLine() handleLineEnd(false) of ' ', '\t': - while true: - p.lexer.bufpos.inc() - case p.lexer.buf[p.lexer.bufpos] - of ' ', '\t': discard - of '\l': - p.lexer.bufpos = p.lexer.handleLF(p.lexer.bufpos) - break - of '\c': - p.lexer.bufpos = p.lexer.handleCR(p.lexer.bufpos) - break - of '#', EndOfFile: - p.lexer.lineEnding() - handleLineEnd(false) - break - else: - indentation = p.lexer.getColNumber(p.lexer.bufpos) - yield startDocEvent() - state = fpBlockObjectStart - break + if not p.lexer.consumeLineIfEmpty(): + indentation = p.lexer.getColNumber(p.lexer.bufpos) + yield startDocEvent() + state = fpBlockObjectStart of '\l': p.lexer.bufpos = p.lexer.handleLF(p.lexer.bufpos) of '\c': p.lexer.bufpos = p.lexer.handleCR(p.lexer.bufpos) of EndOfFile: return @@ -1139,12 +1147,11 @@ proc parse*(p: YamlParser, s: Stream): YamlStream = startToken() p.lexer.documentEnd(isDocumentEnd) if isDocumentEnd: + closeEverything() p.lexer.bufpos.inc(3) p.lexer.lineEnding() - handleLineEnd(true) - closeEverything() - initDocValues() - state = fpInitial + handleLineEnd(false) + state = fpAfterDocument else: indentation = 0 closeMoreIndentedLevels() @@ -1407,6 +1414,7 @@ proc parse*(p: YamlParser, s: Stream): YamlStream = p.lexer.plainScalar(content, cBlock) state = fpBlockAfterPlainScalar of fpExpectDocEnd: + debug("state: expectDocEnd") case p.lexer.buf[p.lexer.bufpos] of '-': var token: LexedPossibleDirectivesEnd @@ -1425,12 +1433,12 @@ proc parse*(p: YamlParser, s: Stream): YamlStream = startToken() p.lexer.documentEnd(isDocumentEnd) if isDocumentEnd: + closeEverything() p.lexer.bufpos.inc(3) - yield endDocEvent() - initDocValues() - state = fpInitial - else: - parserError("Unexpected content (expected document end)") + p.lexer.lineEnding() + handleLineEnd(false) + state = fpAfterDocument + else: parserError("Unexpected content (expected document end)") of ' ', '\t', '#': p.lexer.lineEnding() handleLineEnd(true) @@ -1442,6 +1450,34 @@ proc parse*(p: YamlParser, s: Stream): YamlStream = else: startToken() parserError("Unexpected content (expected document end)") + of fpAfterDocument: + debug("state: afterDocument") + case p.lexer.buf[p.lexer.bufpos] + of '.': + var isDocumentEnd: bool + startToken() + p.lexer.documentEnd(isDocumentEnd) + if isDocumentEnd: + p.lexer.bufpos.inc(3) + p.lexer.lineEnding() + handleLineEnd(false) + else: + initDocValues() + yield startDocEvent() + state = fpBlockLineStart + of '#': + p.lexer.lineEnding() + handleLineEnd(false) + of '\t', ' ': + if not p.lexer.consumeLineIfEmpty(): + indentation = p.lexer.getColNumber(p.lexer.bufpos) + initDocValues() + yield startDocEvent() + state = fpBlockObjectStart + of EndOfFile: break + else: + initDocValues() + state = fpInitial of fpFlow: debug("state: flow") p.lexer.skipWhitespaceCommentsAndNewlines()