diff options
author | Fabian Kosmale <fabian.kosmale@qt.io> | 2019-08-27 11:18:35 +0200 |
---|---|---|
committer | Fabian Kosmale <fabian.kosmale@qt.io> | 2019-09-03 10:57:02 +0200 |
commit | 4ba86a97011dda2d8792ee23f0e86015715a592e (patch) | |
tree | 5f666078e7bb9c01d9c88db9446ffad364aebf71 /src/qml/parser/qqmljslexer.cpp | |
parent | fcf0dfed9d9dbfa0fc1c91f334caf16926b8552c (diff) |
qqmljs.g: reduce number of conflicts
First, let the lexer create a T_FUNCTION_STAR token for "function *",
which makes the job of the parser significantly easier.
Then, by using GeneratorDeclaration instead of GeneratorExpression, we can
avoid the conflicts between UiObjectMember and PrimaryExpression
Change-Id: Ib08918e3977ed1a80cdea0948da80bf37886f7de
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Diffstat (limited to 'src/qml/parser/qqmljslexer.cpp')
-rw-r--r-- | src/qml/parser/qqmljslexer.cpp | 82 |
1 files changed, 54 insertions, 28 deletions
diff --git a/src/qml/parser/qqmljslexer.cpp b/src/qml/parser/qqmljslexer.cpp index 1e0ac72bd1..443e1a7476 100644 --- a/src/qml/parser/qqmljslexer.cpp +++ b/src/qml/parser/qqmljslexer.cpp @@ -492,6 +492,42 @@ int Lexer::scanToken() again: _validTokenText = false; + // handle comment can be called after a '/' has been read + // and returns true if it actually encountered a comment + auto handleComment = [this](){ + if (_char == QLatin1Char('*')) { + scanChar(); + while (_codePtr <= _endPtr) { + if (_char == QLatin1Char('*')) { + scanChar(); + if (_char == QLatin1Char('/')) { + scanChar(); + + if (_engine) { + _engine->addComment(tokenOffset() + 2, _codePtr - _tokenStartPtr - 1 - 4, + tokenStartLine(), tokenStartColumn() + 2); + } + + return true; + } + } else { + scanChar(); + } + } + } else if (_char == QLatin1Char('/')) { + while (_codePtr <= _endPtr && !isLineTerminator()) { + scanChar(); + } + if (_engine) { + _engine->addComment(tokenOffset() + 2, _codePtr - _tokenStartPtr - 1 - 2, + tokenStartLine(), tokenStartColumn() + 2); + } + return true; + } + return false; + }; + + while (_char.isSpace()) { if (isLineTerminator()) { if (_restrictedKeyword) { @@ -599,35 +635,9 @@ again: case ':': return T_COLON; case '/': - if (_char == QLatin1Char('*')) { - scanChar(); - while (_codePtr <= _endPtr) { - if (_char == QLatin1Char('*')) { - scanChar(); - if (_char == QLatin1Char('/')) { - scanChar(); - - if (_engine) { - _engine->addComment(tokenOffset() + 2, _codePtr - _tokenStartPtr - 1 - 4, - tokenStartLine(), tokenStartColumn() + 2); - } - - goto again; - } - } else { - scanChar(); - } - } - } else if (_char == QLatin1Char('/')) { - while (_codePtr <= _endPtr && !isLineTerminator()) { - scanChar(); - } - if (_engine) { - _engine->addComment(tokenOffset() + 2, _codePtr - _tokenStartPtr - 1 - 2, - tokenStartLine(), tokenStartColumn() + 2); - } + if (handleComment()) goto again; - } if (_char == QLatin1Char('=')) { + else if (_char == QLatin1Char('=')) { scanChar(); return T_DIVIDE_EQ; } @@ -829,6 +839,21 @@ again: if (!identifierWithEscapeChars) kind = classify(_tokenStartPtr, _tokenLength, parseModeFlags()); + if (kind == T_FUNCTION) { + continue_skipping: + while (_codePtr < _endPtr && _char.isSpace()) + scanChar(); + if (_char == QLatin1Char('*')) { + _tokenLength = _codePtr - _tokenStartPtr - 1; + kind = T_FUNCTION_STAR; + scanChar(); + } else if (_char == QLatin1Char('/')) { + scanChar(); + if (handleComment()) + goto continue_skipping; + } + } + if (_engine) { if (kind == T_IDENTIFIER && identifierWithEscapeChars) _tokenSpell = _engine->newStringRef(_tokenText); @@ -1407,6 +1432,7 @@ static const int uriTokens[] = { QQmlJSGrammar::T_FINALLY, QQmlJSGrammar::T_FOR, QQmlJSGrammar::T_FUNCTION, + QQmlJSGrammar::T_FUNCTION_STAR, QQmlJSGrammar::T_IF, QQmlJSGrammar::T_IN, QQmlJSGrammar::T_OF, |