File: CommonPatterns.qll

package info (click to toggle)
chromium 145.0.7632.109-1
  • links: PTS, VCS
  • area: main
  • in suites: forky
  • size: 5,974,804 kB
  • sloc: cpp: 36,197,696; ansic: 7,602,761; javascript: 3,563,590; python: 1,649,324; xml: 838,427; asm: 717,087; pascal: 185,708; sh: 88,786; perl: 88,718; objc: 79,984; sql: 59,811; cs: 42,452; fortran: 24,101; makefile: 21,022; tcl: 15,277; php: 14,022; yacc: 9,066; ruby: 7,553; awk: 3,720; lisp: 3,233; lex: 1,328; ada: 727; jsp: 228; sed: 36
file content (35 lines) | stat: -rw-r--r-- 1,300 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import cpp

module CommonPatterns {
  /**
  * Predicate to check if a function call is not followed by a return statement
  * within the same or immediately after in any block.
  */
  pragma[inline]
  predicate isCallNotFollowedByReturn(FunctionCall call) {
    exists(Function f |
      call.getEnclosingFunction() = f and

      // Ignore any calls with a returnStatement in the same enclosing block.
      not exists(ReturnStmt returnStmt |
        call.getEnclosingBlock() = returnStmt.getEnclosingBlock()
      ) and

      // Ignore any calls with a returnStatement immediately after in the block.
      exists(Stmt stmtAfterCall |
        stmtAfterCall.getEnclosingFunction() = f and
        stmtAfterCall.getLocation().getStartLine() > call.getLocation().getStartLine() and
        not stmtAfterCall instanceof ReturnStmt and
        not exists(ReturnStmt returnBetween |
          returnBetween.getEnclosingFunction() = f and
          returnBetween.getLocation().getStartLine() > call.getLocation().getStartLine() and
          returnBetween.getLocation().getStartLine() < stmtAfterCall.getLocation().getStartLine()
        )
      )
    )
  }
}