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[muparser] ApplyRemainingOprt to return explicit errors

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This commit is contained in:
ridiculousfish 2017-11-24 15:54:00 -08:00
parent 60d9c9fa00
commit 234808bc32
2 changed files with 20 additions and 12 deletions
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4
muparser-2.2.5/include/muParserBase.h
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@ -218,8 +218,8 @@ class ParserBase {
void AddCallback(const string_type &a_strName, const ParserCallback &a_Callback,
funmap_type &a_Storage, const char_type *a_szCharSet);
void ApplyRemainingOprt(ParserStack<token_type> &a_stOpt,
ParserStack<token_type> &a_stVal) const;
OptionalError ApplyRemainingOprt(ParserStack<token_type> &a_stOpt,
ParserStack<token_type> &a_stVal) const;
OptionalError ApplyBinOprt(ParserStack<token_type> &a_stOpt,
ParserStack<token_type> &a_stVal) const;

28
muparser-2.2.5/src/muParserBase.cpp
View file

@ -540,7 +540,8 @@ const varmap_type &ParserBase::GetUsedVar() const {
m_pTokenReader->IgnoreUndefVar(true);
// Try to create bytecode, but don't use it for any further calculations since it may
// contain references to nonexisting variables.
OptionalError err = CreateRPN();
OptionalError oerr = CreateRPN();
if (oerr.has_error()) throw oerr.error();
m_pParseFormula = &ParserBase::ParseString;
m_pTokenReader->IgnoreUndefVar(false);
} catch (exception_type & /*e*/) {
@ -772,9 +773,10 @@ OptionalError ParserBase::ApplyBinOprt(ParserStack<token_type> &a_stOpt,
\param a_stOpt The operator stack
\param a_stVal The value stack
*/
void ParserBase::ApplyRemainingOprt(ParserStack<token_type> &stOpt,
ParserStack<token_type> &stVal) const {
OptionalError ParserBase::ApplyRemainingOprt(ParserStack<token_type> &stOpt,
ParserStack<token_type> &stVal) const {
while (stOpt.size() && stOpt.top().GetCode() != cmBO && stOpt.top().GetCode() != cmIF) {
OptionalError oerr;
token_type tok = stOpt.top();
switch (tok.GetCode()) {
case cmOPRT_INFIX:
@ -794,19 +796,21 @@ void ParserBase::ApplyRemainingOprt(ParserStack<token_type> &stOpt,
case cmLOR:
case cmASSIGN:
if (stOpt.top().GetCode() == cmOPRT_INFIX)
ApplyFunc(stOpt, stVal, 1);
oerr = ApplyFunc(stOpt, stVal, 1);
else
ApplyBinOprt(stOpt, stVal);
oerr = ApplyBinOprt(stOpt, stVal);
break;
case cmELSE:
ApplyIfElse(stOpt, stVal);
oerr = ApplyIfElse(stOpt, stVal);
break;
default:
assert(0 && "muParser internal error");
}
if (oerr.has_error()) return oerr.error();
}
return {};
}
/// Invoke the function \p func as the fun_typeN given argCount, passing in \p argCount arguments
@ -1049,6 +1053,7 @@ OptionalError ParserBase::CreateRPN() const {
for (;;) {
opt = m_pTokenReader->ReadNextToken();
OptionalError oerr;
switch (opt.GetCode()) {
//
@ -1068,7 +1073,7 @@ OptionalError ParserBase::CreateRPN() const {
case cmVAL: {
stVal.push(opt);
ValueOrError optVal = opt.GetVal();
if (optVal.has_error()) throw optVal.error();
if (optVal.has_error()) return optVal.error();
m_vRPN.AddVal(optVal.value());
break;
}
@ -1077,7 +1082,8 @@ OptionalError ParserBase::CreateRPN() const {
m_nIfElseCounter--;
if (m_nIfElseCounter < 0) Error(ecMISPLACED_COLON, m_pTokenReader->GetPos());
ApplyRemainingOprt(stOpt, stVal);
oerr = ApplyRemainingOprt(stOpt, stVal);
if (oerr.has_error()) return oerr.error();
m_vRPN.AddIfElse(cmELSE);
stOpt.push(opt);
break;
@ -1089,7 +1095,8 @@ OptionalError ParserBase::CreateRPN() const {
// fallthrough intentional (no break!)
case cmEND:
ApplyRemainingOprt(stOpt, stVal);
oerr = ApplyRemainingOprt(stOpt, stVal);
if (oerr.has_error()) return oerr.error();
break;
case cmBC: {
@ -1099,7 +1106,8 @@ OptionalError ParserBase::CreateRPN() const {
// was an opening bracket we know better...
if (opta.GetCode() == cmBO) --stArgCount.top();
ApplyRemainingOprt(stOpt, stVal);
oerr = ApplyRemainingOprt(stOpt, stVal);
if (oerr.has_error()) return oerr.error();
// Check if the bracket content has been evaluated completely
if (stOpt.size() && stOpt.top().GetCode() == cmBO) {