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Eval

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- Added range checking to the while loop for the parser, to prevent
  runnig over, which caused some of the problems with segfaults on
  Debian & Ubuntu.
This commit is contained in:
Paul Beckingham 2014-05-22 22:52:23 -04:00
parent 5893bfede5
commit 42f3419bd3
1 changed files with 16 additions and 8 deletions
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24
src/Eval.cpp
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@ -416,7 +416,8 @@ bool Eval::parseLogical (
if (i < infix.size () &&
parseRegex (infix, i))
{
while ((infix[i].first == "and" ||
while (i < infix.size () &&
(infix[i].first == "and" ||
infix[i].first == "or" ||
infix[i].first == "xor") &&
infix[i].second == Lexer::typeOperator)
@ -447,7 +448,8 @@ bool Eval::parseRegex (
if (i < infix.size () &&
parseEquality (infix, i))
{
while ((infix[i].first == "~" ||
while (i < infix.size () &&
(infix[i].first == "~" ||
infix[i].first == "!~") &&
infix[i].second == Lexer::typeOperator)
{
@ -477,7 +479,8 @@ bool Eval::parseEquality (
if (i < infix.size () &&
parseComparative (infix, i))
{
while ((infix[i].first == "==" ||
while (i < infix.size () &&
(infix[i].first == "==" ||
infix[i].first == "=" ||
infix[i].first == "!=") &&
infix[i].second == Lexer::typeOperator)
@ -508,7 +511,8 @@ bool Eval::parseComparative (
if (i < infix.size () &&
parseArithmetic (infix, i))
{
while ((infix[i].first == "<=" ||
while (i < infix.size () &&
(infix[i].first == "<=" ||
infix[i].first == "<" ||
infix[i].first == ">=" ||
infix[i].first == ">") &&
@ -540,7 +544,8 @@ bool Eval::parseArithmetic (
if (i < infix.size () &&
parseGeometric (infix, i))
{
while ((infix[i].first == "+" ||
while (i < infix.size () &&
(infix[i].first == "+" ||
infix[i].first == "-") &&
infix[i].second == Lexer::typeOperator)
{
@ -570,7 +575,8 @@ bool Eval::parseGeometric (
if (i < infix.size () &&
parseTag (infix, i))
{
while ((infix[i].first == "*" ||
while (i < infix.size () &&
(infix[i].first == "*" ||
infix[i].first == "/" ||
infix[i].first == "%") &&
infix[i].second == Lexer::typeOperator)
@ -601,7 +607,8 @@ bool Eval::parseTag (
if (i < infix.size () &&
parseUnary (infix, i))
{
while ((infix[i].first == "_hastag_" ||
while (i < infix.size () &&
(infix[i].first == "_hastag_" ||
infix[i].first == "_notag_") &&
infix[i].second == Lexer::typeOperator)
{
@ -669,7 +676,8 @@ bool Eval::parseExponent (
if (i < infix.size () &&
parsePrimitive (infix, i))
{
while (infix[i].first == "^" &&
while (i < infix.size () &&
infix[i].first == "^" &&
infix[i].second == Lexer::typeOperator)
{
if (_debug)