mrva/vscode-codeql
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

Cache regexprs

Browse Source
This commit is contained in:
Dave Bartolomeo
2022-08-12 14:47:50 -04:00
parent beeb19dc05
commit 49d12674b7
1 changed files with 15 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
extensions/ql-vscode/src/log-insights/join-order.ts
View File

@@ -29,7 +29,7 @@ function makeKey(
return `${queryCausingWork}:${predicate}${suffix ? ' ' + suffix : ''}`;
}
function getDependentPredicates(operations: string[]): I.List<string> {
const DEPENDENT_PREDICATES_REGEXP = (() => {
const regexps = [
// SCAN id
String.raw`SCAN\s+([0-9a-zA-Z:#_]+)\s`,
@@ -44,16 +44,23 @@ function getDependentPredicates(operations: string[]): I.List<string> {
// SELECT id
String.raw`SELECT\s+([0-9a-zA-Z:#_]+)`
];
const r = new RegExp(
return new RegExp(
`${String.raw`\{[0-9]+\}\s+[0-9a-zA-Z]+\s=\s(?:` + regexps.join('|')})`
);
})();
function getDependentPredicates(operations: string[]): I.List<string> {
return I.List(operations).flatMap(operation => {
const matches = r.exec(operation.trim());
return I.List(matches!)
.rest() // Skip the first group as it's just the entire string
.filter(x => !x?.match('r[0-9]+|PRIMITIVE')) // Only keep the references to predicates.
.flatMap(x => x.split(',')) // Group 2 in the INVOKE HIGHER_ORDER RELATION case is a comma-separated list of identifiers.
.filter(x => !!x); // Remove empty strings
const matches = DEPENDENT_PREDICATES_REGEXP.exec(operation.trim());
if (matches !== null) {
return I.List(matches)
.rest() // Skip the first group as it's just the entire string
.filter(x => !!x && !x.match('r[0-9]+|PRIMITIVE')) // Only keep the references to predicates.
.flatMap(x => x.split(',')) // Group 2 in the INVOKE HIGHER_ORDER RELATION case is a comma-separated list of identifiers.
.filter(x => !!x); // Remove empty strings
} else {
return I.List();
}
});
}