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Shorten quantifier operations by using early returns

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This commit is contained in:
Hendrik van Antwerpen 2022-01-11 17:50:42 +01:00
parent e338726cde
commit 8b28f3a8c4
1 changed files with 35 additions and 78 deletions
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113
lib/src/query.c
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@ -467,192 +467,149 @@ static TSQuantifier quantifier_mul(
TSQuantifier left,
TSQuantifier right
) {
TSQuantifier result = TSQuantifierZero; // initialized to make compiler happy, but all cases should be covered below!
switch (left)
{
case TSQuantifierZero:
result = TSQuantifierZero;
break;
return TSQuantifierZero;
case TSQuantifierZeroOrOne:
switch (right) {
case TSQuantifierZero:
result = TSQuantifierZero;
break;
return TSQuantifierZero;
case TSQuantifierZeroOrOne:
case TSQuantifierOne:
result = TSQuantifierZeroOrOne;
break;
return TSQuantifierZeroOrOne;
case TSQuantifierZeroOrMore:
case TSQuantifierOneOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
};
break;
case TSQuantifierZeroOrMore:
switch (right) {
case TSQuantifierZero:
result = TSQuantifierZero;
break;
return TSQuantifierZero;
case TSQuantifierZeroOrOne:
case TSQuantifierZeroOrMore:
case TSQuantifierOne:
case TSQuantifierOneOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
};
break;
case TSQuantifierOne:
result = right;
break;
return right;
case TSQuantifierOneOrMore:
switch (right) {
case TSQuantifierZero:
result = TSQuantifierZero;
break;
return TSQuantifierZero;
case TSQuantifierZeroOrOne:
case TSQuantifierZeroOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
case TSQuantifierOne:
case TSQuantifierOneOrMore:
result = TSQuantifierOneOrMore;
break;
return TSQuantifierOneOrMore;
};
break;
}
return result;
return TSQuantifierZero; // to make compiler happy, but all cases should be covered above!
}
static TSQuantifier quantifier_join(
TSQuantifier left,
TSQuantifier right
) {
TSQuantifier result = TSQuantifierZero; // initialized to make compiler happy, but all cases should be covered below!
switch (left)
{
case TSQuantifierZero:
switch (right) {
case TSQuantifierZero:
result = TSQuantifierZero;
break;
return TSQuantifierZero;
case TSQuantifierZeroOrOne:
case TSQuantifierOne:
result = TSQuantifierZeroOrOne;
break;
return TSQuantifierZeroOrOne;
case TSQuantifierZeroOrMore:
case TSQuantifierOneOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
};
break;
case TSQuantifierZeroOrOne:
switch (right) {
case TSQuantifierZero:
case TSQuantifierZeroOrOne:
case TSQuantifierOne:
result = TSQuantifierZeroOrOne;
return TSQuantifierZeroOrOne;
break;
case TSQuantifierZeroOrMore:
case TSQuantifierOneOrMore:
result = TSQuantifierZeroOrMore;
return TSQuantifierZeroOrMore;
break;
};
break;
case TSQuantifierZeroOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
case TSQuantifierOne:
switch (right) {
case TSQuantifierZero:
case TSQuantifierZeroOrOne:
result = TSQuantifierZeroOrOne;
break;
return TSQuantifierZeroOrOne;
case TSQuantifierZeroOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
case TSQuantifierOne:
result = TSQuantifierOne;
break;
return TSQuantifierOne;
case TSQuantifierOneOrMore:
result = TSQuantifierOneOrMore;
break;
return TSQuantifierOneOrMore;
};
break;
case TSQuantifierOneOrMore:
switch (right) {
case TSQuantifierZero:
case TSQuantifierZeroOrOne:
case TSQuantifierZeroOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
case TSQuantifierOne:
case TSQuantifierOneOrMore:
result = TSQuantifierOneOrMore;
break;
return TSQuantifierOneOrMore;
};
break;
}
return result;
return TSQuantifierZero; // to make compiler happy, but all cases should be covered above!
}
static TSQuantifier quantifier_add(
TSQuantifier left,
TSQuantifier right
) {
TSQuantifier result = TSQuantifierZero; // initialized to make compiler happy, but all cases should be covered below!
switch (left)
{
case TSQuantifierZero:
result = right;
break;
return right;
case TSQuantifierZeroOrOne:
switch (right) {
case TSQuantifierZero:
result = TSQuantifierZeroOrOne;
break;
return TSQuantifierZeroOrOne;
case TSQuantifierZeroOrOne:
case TSQuantifierZeroOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
case TSQuantifierOne:
case TSQuantifierOneOrMore:
result = TSQuantifierOneOrMore;
break;
return TSQuantifierOneOrMore;
};
break;
case TSQuantifierZeroOrMore:
switch (right) {
case TSQuantifierZero:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
case TSQuantifierZeroOrOne:
case TSQuantifierZeroOrMore:
result = TSQuantifierZeroOrMore;
break;
return TSQuantifierZeroOrMore;
case TSQuantifierOne:
case TSQuantifierOneOrMore:
result = TSQuantifierOneOrMore;
break;
return TSQuantifierOneOrMore;
};
break;
case TSQuantifierOne:
switch (right) {
case TSQuantifierZero:
result = TSQuantifierOne;
break;
return TSQuantifierOne;
case TSQuantifierZeroOrOne:
case TSQuantifierZeroOrMore:
case TSQuantifierOne:
case TSQuantifierOneOrMore:
result = TSQuantifierOneOrMore;
break;
return TSQuantifierOneOrMore;
};
break;
case TSQuantifierOneOrMore:
result = TSQuantifierOneOrMore;
break;
return TSQuantifierOneOrMore;
}
return result;
return TSQuantifierZero; // to make compiler happy, but all cases should be covered above!
}
// Create new capture quantifiers structure