Summary:
Change the API of `Logging` wrt to writing to files and to the console (see
changes in logging.mli).
Write only to one log file: infer-out/log. Prefix each line with the kind of
warning and the PID of the process emitting it. Writing with `O_APPEND` is
atomic so the file should not get garbled by concurrent writes. To get the
output of a single process, find out which one interests you by looking at
infer-out/log, then `grep ^[<PID>] infer-out/log`.
Introduce 3 log levels for debug output and command-line options to set them
for various categories individually.
Change tons of `"\n"` to `"@\n"` so the `Format` module is aware of newlines
without us having to look through every character of every logged string for
`\n` characters.
Reviewed By: mbouaziz
Differential Revision: D5165317
fbshipit-source-id: 93c922f
Summary:
Whenever running CTL in debug mode, you can now stop the execution and attach a step-by-step debugger by placing a breakpoint in the source code.
A breakpoint is the comment containing `INFER_BREAKPOINT`, placed on the line of interest.
You can attach the debugger to your breakpoint by running Infer with the following command
```
infer --linters-def-file my_linter.al --linters-developer-mode -- clang -c file.m
```
Reviewed By: dulmarod
Differential Revision: D4843358
fbshipit-source-id: acebde4
Summary: Handling special case of DeclStmt with VarDecl: emit the VarDecl node then emit the statements in DeclStmt as children of VarDecl. This is because despite being equal, the statements inside VarDecl and those inside DeclStmt belong to different instances, hence they fail the phys_equal check that should colour them
Reviewed By: dulmarod
Differential Revision: D4850681
fbshipit-source-id: b9683dc
Summary:
This debugger stops the execution of CTL during the evaluation of formulas, then shows useful info about the current state:
- Which formula is being evaluated
- In which part of the AST is such formula being evaluated
- Line number of the source file
- Whether a CTL-Transition will take place or not
- Node-ID that can be related to the dotty file containing the evaluation graph (the one in infer-out/lint_dotty/)
The AST is shown with coloured nodes, where each colour has the following meaning:
- [Default terminal colour], Bold: The node is being evaluated
- Green, Bold: The formula returned true on the current node
- Red, Bold: The formula returned false on the current node
Reviewed By: ddino
Differential Revision: D4834451
fbshipit-source-id: c9aa970
Summary:
- Do not print OCaml backtrace unless in developer mode.
- Print javac output when it fails.
- Refactor Javac.ml so that rerunning the command doesn't duplicate code.
The output of the clang and Javac integration is good, the output for mvn is
ok, the output for Buck is still fairly "meh".
Reviewed By: jberdine
Differential Revision: D4818722
fbshipit-source-id: 1973b93
Summary:
Remove the remaining uses of polymorphic equality `=`.
In case of basic types, this is replaced by String.equal or Int.equal.
In case of `= []`, this is replaced by `List.is_empty`.
In case of `= None`, this is replaced by `is_none`.
In case of a datatype definition such as `type a = A | B`,
a `compare_a` function is defined by adding `type a = A | B [@deriving compare]`
and a `equal_a` function is defined as `let equal_a = [%compare.equal : a]`.
In case of comparison with a polymorphic variant `= `Yes`, the equality
defined in `PVariant.(=)` is used. Typically, `open! Pvariant` is added
at the beginning of the file to cover all the uses.
Reviewed By: jberdine
Differential Revision: D4456129
fbshipit-source-id: f31c433
Summary:
Module CFrontend_utils is a container for two modules: Ast_utils and General_utils.
Instead of opening CFrontend_utils in several places, it is now split into two separate modules CAst_utils and CGeneral_utils, which are now accessed directly.
Reviewed By: jberdine
Differential Revision: D4392710
fbshipit-source-id: ea756a2
Summary:
This diff allows to use the linters written in DSL to check for bugs.
Now new checkers can be written directly in the DSL.
The diff also remove some weirdness and simplify the CTL semantics.
For example no need to unwrap a node when evaluating the IN operator.
Also no need to distinguish anymore between stmt and decl in the
semantics of EX and EF.
Moreover, the diff de-couple hard-coded checkers (eg checks on component kit)
from those checkers parsed in the .al files.
Reviewed By: martinoluca
Differential Revision: D4375207
fbshipit-source-id: 9ac2d47
Summary:
In checkers we use "let" clause to define formulas abbreviation.
This diff expands the use of such formula id when used.
This allows to evaluate the formula.
For example.
let f = f_def
let g = g_def
let h = f or g
will expand the use of f and g with their definition.
Reviewed By: martinoluca
Differential Revision: D4299542
fbshipit-source-id: 9d37dd0
Summary:
Utils contains definitions intended to be in the global namespace for
all of the infer code-base, as well as pretty-printing functions, and
assorted utility functions mostly for dealing with files and processes.
This diff changes the module opened into the global namespace to
IStd (Std conflict with extlib), and moves the pretty-printing
definitions from Utils to Pp.
Reviewed By: jvillard
Differential Revision: D4232457
fbshipit-source-id: 1e070e0
Summary:
Functions related to source files were already namespaced by `source_file_` prefix. Make separate module for them.
In high level it replaces all `source_file_` with `SourceFile.` and then fixes all remaining compilation errors
Reviewed By: jvillard
Differential Revision: D4299053
fbshipit-source-id: 20b1d39
Summary:
`DB.source_file_to_string` is very easy to misuse and it shouldn't even exist.
In preparation for that day, replace most of `source_file_to_string` with `source_file_pp`
Reviewed By: jvillard
Differential Revision: D4258390
fbshipit-source-id: 447cf5a
Summary:
This will help during the creation of new checkers, and will prevent errors like misspelling of AST node names.
It will also make it possible to fail immediately during the parsing of CTL inputs.
Reviewed By: ddino
Differential Revision: D4205434
fbshipit-source-id: ed8631a
Summary:
During the development/debugging of AST checks, it will be possible to emit dotty graphs with a representation of the evaluation of formulas.
The formulas, expressed using the notation of CTL (https://en.wikipedia.org/wiki/Computation_tree_logic) are represented in a graph alongside the current ast-node and their final evaluation result (green for true, red for false)
To get the dotty graph, run infer with the `--debug` flag
Reviewed By: ddino
Differential Revision: D3937787
fbshipit-source-id: 163e17d
Summary:
This is needed for later: InferClang will no longer be started once for each
source file to be analysed. Instead, it will be called to analyse several files
at once, and will analyse them one by one. Thus, `clang_lang` and `source_file`
are moved to `cFrontend_config` as references.
The biggest change this entailed was the new logging infrastructure, which was
depending on `Config.source_file`. This diff moves the logic entirely to
`Logging`, and changes the API so that executables wishing to log into files
have to set it up using `Logging.set_log_file_identifier`. This can be called
several times during the execution, allowing to dynamically change the log file
(eg, when analysing several source files one by one!).
Reviewed By: jberdine
Differential Revision: D3944148
fbshipit-source-id: 6129090
Summary:
This diff introduces a first version of a front-end checkers specification
language. The language is based on the CTL temporal logic that is interpreted
on trees. In this case the model for a formula is the AST of the program produced
by clang.
This diff introduce the language and translate most of the existing checks on
this new language. In other diff I will translate all the other checks.
Then I will generalize the framework to allow the developer to specify only
the CTL formula.
Reviewed By: martinoluca
Differential Revision: D3819211
fbshipit-source-id: f8e01eb
Jules Villard
Dulma Churchill
Dino Distefano
Martino Luca
Cristiano Calcagno
Josh Berdine
Andrzej Kotulski