cmExprParserHelper: Simplify error state tracking

Errors always have explanation strings, so use the presence of such a
string to track whether an error has occurred.  This avoids an extra
variable.
This commit is contained in:
Brad King
2018-07-16 13:04:06 -04:00
parent 185bcface4
commit dd5c54600b
+2 -6
View File
@@ -39,10 +39,9 @@ int cmExprParserHelper::ParseString(const char* str, int verb)
yyscan_t yyscanner;
cmExpr_yylex_init(&yyscanner);
cmExpr_yyset_extra(this, yyscanner);
int res;
try {
res = cmExpr_yyparse(yyscanner);
int res = cmExpr_yyparse(yyscanner);
if (res != 0) {
std::string e = "cannot parse the expression: \"" + InputBuffer + "\": ";
e += ErrorString;
@@ -55,19 +54,16 @@ int cmExprParserHelper::ParseString(const char* str, int verb)
e += fail.what();
e += ".";
this->SetError(std::move(e));
res = 1;
} catch (std::out_of_range const&) {
std::string e = "cannot evaluate the expression: \"" + InputBuffer +
"\": a numeric value is out of range.";
this->SetError(std::move(e));
res = 1;
} catch (...) {
std::string e = "cannot parse the expression: \"" + InputBuffer + "\".";
this->SetError(std::move(e));
res = 1;
}
cmExpr_yylex_destroy(yyscanner);
if (res != 0) {
if (!this->ErrorString.empty()) {
return 0;
}