Windows with the grammar Hello.g4 starting from the rule 'r'. antlr.4.5.3-complete.jar 4.gui.TestRig yourGrammar Hello r -tree
ANTLR 4 INSTALL FOR MAC WINDOWS
antlr.4.5.3-complete.jar 4.gui.TestRig yourGrammar YourRule -tree //on windows with no alias To run TestRig on your grammar you can pass the parameters in for your grammar like this : grun yourGrammar yourRule -tree //using the setup alias If you do not wish to setup an alias on windows you can access TestRig by running the following command in the same location as your ANTLR jar directory: java -cp. Once you have setup your alias you can setup TestRig in the following way, again using an alias is recommended as reduces the amount of time required to perform the action: alias grun='java 4.' Note setup on windows for aliases and classpath setup may be more complicated, see here for more comprehensive details. or any directory where your jar is located Machine wont see classes in your current working directory.Īlises can be used on Linux/MAC/Unix to simplify commands used: alias antlr4='java -jar /usr/local/lib/antlr-4.5.3-complete.jar' Note: Ensure the Dot precedes any path to ensure the java virtual To use this tool contained within the ANTLR jar file you should setup your systems classpath to allow access to both the ANTLR tool and the runtime library : export CLASSPATH=".:/usr/local/lib/antlr-4.5.3-complete.jar:$CLASSPATH" travis.yml file.ANTLR contains a testing tool in its runtime library, this tool can be used to display information detailing how the parsing is performed to match input against defined rules in your grammar file. If your project uses Travis as a CI service, you might want to know how these changes affect to your. # INSTALL_COMMAND "" )Īnd that’s it! Simple enough right? We didn’t even have to touch CMakeLists.txt! Just for funzies: Travis-CI integration First, grun requires all files in the same directory, and the files are expected to be in Java, so we copy Expr.g4 to a new directory, and we generate the Expr Java files and compile them first. Here is how one can use it with our Expr grammar. Using that however, is a little different. # CMakeLists.txt # add generated grammar to demo binary target add_executable (test_antlr main.cpp $ pull #. ANTLR ships with a tool called grun that can help you to debug your grammar. Create a folder with the following structure, leaving main.cpp and CMakeLists.txt empty.With all this in hand, let’s create a simple project that links against the library: A handy macro that takes care of generating the Lexer and Parser classes and adding a compilation target antlr4cpp_generation_ and the handy variable antlr4cpp_include_dirs_ to include in your CMakeLists.txt.It also sets the useful variables ANTLR4CPP_INCLUDE_DIR (to include in your project’s CMakeLists.txt) and ANTLR4CPP_LIBS, the directory where the compiled libraries will be stored. The ExternalProject_Add call to add antlr4cpp as an external dependency, by downloading it from GitHub and adding a compilation target.A great comment introduction explaining what a minimal CMake project should look like to link against antlr4cpp.Let’s take a moment to explore the contents of this magnificent file: cmake extension included with the runtime, makes it possible to add ANTLR 4 as a dependency with minimal changes to the project. That, combined with a handy file with the. Basic: ExternalProject with remoteįor those unaware, ExternalProject is a neat package from CMake that makes easy to include… well… projects from outside your project.
ANTLR 4 INSTALL FOR MAC INSTALL
You can get it in Debian-based distros via $ sudo apt-get install uuid-dev Compilation exampleīeware: The compilation of the library takes a long time. NOTE: Under Linux, the runtime needs package uuid-dev. They are not the only ones and they both rely on the ExternalProject CMake package, but after testing several other ways these ones were the easiest to me. The next sections illustrate the two easiest ways I found to integrate it into a project. Luckily, the C++ runtime also is built using CMake, which makes the integration at least 20% less painful. In order to use the newly generated classes, we need to compile and link them against the runtime, which is obtained from the main repo. with the flag -visitor), additional classes will be created.Īs we will see later, we never actually have to invoke this command by hand. This will generate files such as MyGrammarParser.h and MyGrammarLexer.h.