General - ANTLR "Arithmetic" Grammar

ANTLR "Arithmetic" Grammar - Graphical Output

Q

Where to get a graphical output example of the "Arithmetic" grammar with ANTLR?

✍: FYIcenter

A

You can run the following ANTLR TestRig command to generate a graphical output from the "Arithmetic" lexer and parser:

\fyicenter>java -cp .;antlr-4.7.1-complete.jar \
   org.antlr.v4.gui.TestRig arithmetic equation -gui
   
x  = (-b + (b^2 -4*a*c)^0.50) / 4*a*c
^Z

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

⇒ ANTLR Parser Java API

⇐ ANTLR "Arithmetic" Grammar

⇑ ANTLR Commands and Examples

⇑⇑ FAQ for ANTLR Parser Generator

2021-01-09, 6474👍, 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 y... 2020-12-26, 6500👍, 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-4.7.1-complete.jar \ org.antlr.v4.gui.TestRig arithmetic equation ... 2021-01-09, 6475👍, 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, 6458👍, 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-4.7.1-complete.jar \ org.antlr.v4.gui.TestRig Hello r -gui hello you ^Z The above test ses... 2021-01-09, 6412👍, 0💬

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