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authorRoberto Raggi <roberto.raggi@nokia.com>2009-09-18 11:14:54 +0200
committerRoberto Raggi <roberto.raggi@nokia.com>2009-09-18 12:28:15 +0200
commit81cac3cc49c5ea7817cc04479d706d426f528bc0 (patch)
tree4bb191fb0b62670cd7fadba8fd2a4af8c7c01e9c /src/libs/cplusplus/BackwardsScanner.cpp
parent8ce39a8a3b988c8de77c7f6c74864e282b3936a9 (diff)
downloadqt-creator-81cac3cc49c5ea7817cc04479d706d426f528bc0.tar.gz
Introduced BackwardsScanner::LA(n). LA(n) returns the n-th lookhead token.
Diffstat (limited to 'src/libs/cplusplus/BackwardsScanner.cpp')
-rw-r--r--src/libs/cplusplus/BackwardsScanner.cpp11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/libs/cplusplus/BackwardsScanner.cpp b/src/libs/cplusplus/BackwardsScanner.cpp
index 07c4688757..b0b71ffecd 100644
--- a/src/libs/cplusplus/BackwardsScanner.cpp
+++ b/src/libs/cplusplus/BackwardsScanner.cpp
@@ -45,6 +45,8 @@ BackwardsScanner::BackwardsScanner(const QTextCursor &cursor, const QString &suf
_text += suffix;
_tokens.append(_tokenize(_text, previousBlockState(_block)));
+
+ _startToken = _tokens.size();
}
int BackwardsScanner::state() const
@@ -53,8 +55,11 @@ int BackwardsScanner::state() const
const QList<SimpleToken> &BackwardsScanner::tokens() const
{ return _tokens; }
-const SimpleToken &BackwardsScanner::operator[](int i) const
-{ return const_cast<BackwardsScanner *>(this)->fetchToken(i); }
+const SimpleToken &BackwardsScanner::LA(int index) const
+{ return const_cast<BackwardsScanner *>(this)->fetchToken(_startToken - index); }
+
+const SimpleToken &BackwardsScanner::operator[](int index) const
+{ return const_cast<BackwardsScanner *>(this)->fetchToken(index); }
const SimpleToken &BackwardsScanner::fetchToken(int i)
{
@@ -89,7 +94,7 @@ const SimpleToken &BackwardsScanner::fetchToken(int i)
}
int BackwardsScanner::startToken() const
-{ return _tokens.size(); }
+{ return _startToken; }
int BackwardsScanner::startPosition() const
{ return _block.position(); }