ANTLR TestRig Graphical Output

Q

How to generate Graphical Output from parser using TestRig?

✍: FYIcenter

A

ANTLR TestRig can generate graphical output instead of text tree, if you use the "-gui" option instead of "-tree":

\fyicenter>java -cp .;antlr-4.10.1-complete.jar org.antlr.v4.gui.TestRig Hello r -gui

hello you
^Z

The above test session will result the following graphical window alled "Parse Tree Inspector", displaying the parser output:

⇒ ANTLR "Arithmetic" Grammar

⇐ ANTLR "Hello" Lexer and Parser Error

⇑ ANTLR Commands and Examples

⇑⇑ FAQ for ANTLR Parser Generator

2021-01-09, ∼7754🔥, 0💬

ANTLR TestRig Command and Options
What is the ANTLR TestRig command and its options? I have downloaded the antlr-4.10.1-complete.jar. ANTLR TestRig allows you to test the lexer and parser generated by ANTLR interactively from the command prompt. The main class of ANTLR TestRig is org.antlr.v4.gui.TestRig. You can see its command arg... 2020-12-02, ∼9668🔥, 0💬

ANTLR "Arithmetic" Grammar
Where to get an "Arithmetic" grammar for ANTLR? You can download a copy of the "Arithmetic" grammar for ANTLR at GitHub > antlr > grammars-v4 > arithmetic" . You can follow these steps to play with arithmetic.g4. 1. View the grammar file, arithmetic.g4 (modified to reduce space)... 2021-01-09, ∼9355🔥, 0💬

ANTLR "Hello" Grammar File and Test
How to create a simple "Hello" grammar file and test it with ANTLR? There 4 steps you need to follow to create "Hello" grammar file and test it: 1. Create grammar file, Hello.g4: // Define a grammar called Hello grammar Hello; r : 'hello' ID ; // match keyword hello followed by an identifier ID : [a... 2020-12-02, ∼7994🔥, 0💬

ANTLR Commands and Examples
Where to find answers to frequently asked questions on ANTLR Commands and Examples? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com team on ANTLR Commands and Examples: ANTLR Command and Options ANTLR TestRig Command and Options ANTLR "Hello" Grammar File and... 2020-12-02, ∼7837🔥, 0💬

ANTLR Parser Java API
Where is ANTLR API for Java integration? ANTLR API for Java is available at https://www.antlr.org/api/Java /. To integrate the lexer and parser generated from ANTLR into your Java application, you can follow these steps: 1. Create a character stream (org.antlr.v4.runtime.CharStre am)object from the ... 2020-12-26, ∼7812🔥, 0💬

ANTLR TestRig Graphical Output
How to generate Graphical Output from parser using TestRig? ANTLR TestRig can generate graphical output instead of text tree, if you use the "-gui" option instead of "-tree": \fyicenter>java -cp .;antlr-4.10.1-complete.jar org.antlr.v4.gui.TestRig Hello r -gui hello you ^Z The above test sess... 2021-01-09, ∼7755🔥, 0💬

ANTLR "Arithmetic" Grammar - Graphical Output
Where to get a graphical output example of the "Arithmetic" grammar with ANTLR? You can run the following ANTLR TestRig command to generate a graphical output from the "Arithmetic" lexer and parser: \fyicenter>java -cp .;antlr-4.10.1-complete.jar \ org.antlr.v4.gui.TestRig arithmetic equation... 2021-01-09, ∼7744🔥, 0💬

ANTLR "Hello" Lexer and Parser Error
How to test the "Hello" lexer and parser with invalid source code? I have created the "Hello" grammar and generated the "Hello" lexer and parser. To test the "Hello" lexer and parser with invalid source code, we need to review the "Hello" grammar again. \fyicenter>more hello.g4 // Define a gr... 2020-12-02, ∼7617🔥, 0💬

ANTLR "Arithmeic" Grammar Java Test
How to write a Java program to test the lexer and parser generated from ANTLR? If you have the lexer and parser generated from the arithmetic.g4 grammar file by ANTLR as shown in the previous tutorial, you use the following Java program to test it: // Copyright (c) FYIcenter.com import org.antlr.v4.... 2020-12-26, ∼7491🔥, 0💬

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