ProjectP4

0. pip install antlr4-tools

1. open antlr build.bat in the project folder

if you are experiencing bugs try to solutions here

https://github.com/antlr/antlr4-tools

How to use ANTLR to generate the parse tree

0. Download antlr-4.12.0-complete.jar https://www.antlr.org/download.html

1. SET CLASSPATH=.;C:\Users\krist\Desktop\antlrjar\antlr-4.12.0-complete.jar;%CLASSPATH%

2. Add til path to bat filer: a => antlr4.bat og b => grun.bat

• a:

  • java org.antlr.v4.Tool %*

• b:

  • @ECHO OFF

  • SET TEST_CURRENT_DIR=%CLASSPATH:.;=%

  • if "%TEST_CURRENT_DIR%" == "%CLASSPATH%" ( SET CLASSPATH=.;%CLASSPATH% )

  • @ECHO ON

  • java org.antlr.v4.gui.TestRig %*

3. (optional): test installationen: java org.antlr.v4.Tool

4. cd til mappen med projektfiler

5. antlr4 Grammar.g4

6. javac Grammar*.java

7. grun Grammar <grammar del der skal testes - ellers bare kør declarations> -gui

• Hvis man vil have et træ skrevet ud i konsolen (som kan bruges til videre faser i compileren) => grun Grammar declarations -tree

• Input her virker: if A2 + A3 then A3 + A4

• Dernæst tryk CTRL Z for windows (CTRL D for Unix) => Tryk enter og den burde lave magi