Select the intellij-plugin It will ask you to restart the IDE. If you look at the plug-ins again, you will see:. This section describes how to create a simple Antlr 4 project and build it using maven. We are going to use the ArrayInit. We will need to rename files and modify them. We will conclude by building a portable stand alone application.
Maven will ask a series of questions, simply accept the default answers by hitting enter. We need to edit the pom. The App. The AppTest. We will also be adding the grammar file ArrayInit. Get the examples for the book and put them in the Downloads folder.
To obtain the ArrayInit. Copy the grammar to the maven project. The folder name must match the maven package name org. Copy the main program to the maven project.
We replace the maven App. In the book, that main program is called Test. Spend a few minutes to read the main program. Notice that it reads the standard input stream. We need to remember this when we run the application. Edit the ArrayInit. We need to add a package declaration and to rename the class. Edit the file. The head of the file should look like this when you are done:. Edit the ArrayInitTest. Maven creates a test file called AppTest. Edit the pom. Now we need to extensively modify the pom.
On Linux, you have to save to the disk and run from the command line. Latest version is 3. Parsers that build template output still use StringTemplate v3 for backward compatibility. In antlr Please see release info. ANTLR 3. NET framework. No dependence on the Java runtime. Completely independent version written by Sam Harwell ported from Java. Useful add-ons gUnit grammar unit testing Leon Su has created an awesome unit testing system for grammars called gUnit included in main distribution as of 3.
It provides a simple way to write and run automated tests for grammars in a manner similar to what jUnit does for unit testing. The input can be a single line or multiple lines of strings or even an external file. The output can be simply success or failure, an abstract syntax tree AST , a rule return value, or some text output.
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