From d459a6b0e0d4f128caceaafe981ecf374bb3e420 Mon Sep 17 00:00:00 2001 From: Oswald Buddenhagen Date: Tue, 5 Jul 2016 20:00:17 +0200 Subject: fix calculations of worst-case size requirements for token buffer Change-Id: I3aa4c736acec44f95a0a33c7baae9276568f684f Reviewed-by: Joerg Bornemann Reviewed-by: Oswald Buddenhagen --- qmake/library/qmakeparser.cpp | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'qmake') diff --git a/qmake/library/qmakeparser.cpp b/qmake/library/qmakeparser.cpp index 8170eee76c..180fe90878 100644 --- a/qmake/library/qmakeparser.cpp +++ b/qmake/library/qmakeparser.cpp @@ -304,27 +304,30 @@ void QMakeParser::read(ProFile *pro, const QString &in, int line, SubGrammar gra // Worst-case size calculations: // - line marker adds 1 (2-nl) to 1st token of each line // - empty assignment "A=":2 => - // TokHashLiteral(1) + hash(2) + len(1) + "A"(1) + TokAssign(1) + 0(1) + + // TokHashLiteral(1) + hash(2) + len(1) + "A"(1) + TokAssign(1) + size_hint(1) + // TokValueTerminator(1) == 8 (9) // - non-empty assignment "A=B C":5 => - // TokHashLiteral(1) + hash(2) + len(1) + "A"(1) + TokAssign(1) + 2(1) + + // TokHashLiteral(1) + hash(2) + len(1) + "A"(1) + TokAssign(1) + size_hint(1) + // TokLiteral(1) + len(1) + "B"(1) + // TokLiteral(1) + len(1) + "C"(1) + TokValueTerminator(1) == 14 (15) // - variable expansion: "$$f":3 => // TokVariable(1) + hash(2) + len(1) + "f"(1) = 5 // - function expansion: "$$f()":5 => // TokFuncName(1) + hash(2) + len(1) + "f"(1) + TokFuncTerminator(1) = 6 + // - test literal: "X":1 => + // TokHashLiteral(1) + hash(2) + len(1) + "A"(1) + TokCondition(1) = 6 (7) // - scope: "X:":2 => // TokHashLiteral(1) + hash(2) + len(1) + "A"(1) + TokCondition(1) + - // TokBranch(1) + len(2) + ... + len(2) + ... == 10 - // - test: "X():":4 => + // TokBranch(1) + len(2) + ... + len(2) + ... == 11 (12) + // - test call: "X():":4 => // TokHashLiteral(1) + hash(2) + len(1) + "A"(1) + TokTestCall(1) + TokFuncTerminator(1) + - // TokBranch(1) + len(2) + ... + len(2) + ... == 11 + // TokBranch(1) + len(2) + ... + len(2) + ... == 12 (13) // - "for(A,B):":9 => // TokForLoop(1) + hash(2) + len(1) + "A"(1) + // len(2) + TokLiteral(1) + len(1) + "B"(1) + TokValueTerminator(1) + // len(2) + ... + TokTerminator(1) == 14 (15) - tokBuff.reserve((in.size() + 1) * 5); + // One extra for possibly missing trailing newline. + tokBuff.reserve((in.size() + 1) * 7); ushort *tokPtr = (ushort *)tokBuff.constData(); // Current writing position // Expression precompiler buffer. -- cgit v1.2.3