How to Parse SAS Code

This is the most basic of examples: it shows how to parse some SAS code.

Add Dependencies

Kotlin

repositories {
  mavenLocal()
  mavenCentral()
  flatDir {
      dirs("deps")
  }
}

dependencies {
  implementation(files("deps/sas-parser-with-dependencies-1.6.5-all.jar"))
}

Java

repositories {
  mavenLocal()
  mavenCentral()
  flatDir {
      dirs("deps")
  }
}

dependencies {
  implementation(files("deps/sas-parser-with-dependencies-1.6.5-all.jar"))
  implementation "com.strumenta.kolasu:kolasu-javalib:1.5.96"
}

Parse a file

This code shows how to create a SAS parser object and use it parse a file. It expects in input two File(s): a file containing the SAS code and another one the license.

Kotlin

  private fun processSASFile(sasFile: File, license: File) {
        println("== Processing SAS file " + sasFile.getPath() + " ==\n")
        if (!sasFile.exists() && !sasFile.isFile()) {
            println("File not found or not a file, skipping")
            return
        }
        // register license
        LicenseManager.registerLicense(license)
        // create parser
        val sasLanguage = SASLanguage()
        // set to automatically parse SQL code
        sasLanguage.parseNativeSQL = true

        val result = sasLanguage.parse(sasFile)
        if (!result.issues.isEmpty()) {
            println("Issues in file: " + result.issues.size)
            for (issue in result.issues) {
                println(" - " + issue)
            }
        }

        if (result.root == null) {
            println("Compilation unit not built, skipping")
            return
        }

        val sf: SourceFile = result.root!!

        if (sf.getStatementsAndDeclarations().isEmpty()) {
            println("No statements")
        } else {
            println(
                "Number of statements and declarations: " + sf.getStatementsAndDeclarations().size()
            )
        }
    }

Java

  private static void processSASFile(File sasFile, File license) {
        System.out.println("== Processing SAS file " + sasFile.getPath() + " ==\n");
        if (!sasFile.exists() && !sasFile.isFile()) {
            System.out.println("File not found or not a file, skipping");
            return;
        }
        // register license
        com.strumenta.kolasu.commercial.LicenseManager.INSTANCE.registerLicense(license);
        // create parser
        SASLanguage sasLanguage = new SASLanguage();
        // set to automatically parse SQL code
        sasLanguage.setParseNativeSQL(true);

        ParsingResult<SourceFile> result = sasLanguage.parse(sasFile);
        if (!result.getIssues().isEmpty()) {
            System.out.println("Issues in file: " + result.getIssues().size());
            for (Issue issue: result.getIssues()) {
                System.out.println(" - " + issue);
            }
        }

        if (result.getRoot() == null) {
            System.out.println("Compilation unit not built, skipping");
            return;
        }

        SourceFile sf = result.getRoot();
      
        if (sf.getStatementsAndDeclarations().isEmpty()) {
            System.out.println("No statements");
        } else {
            System.out.println(
                    "Number of statements and declarations: " + sf.getStatementsAndDeclarations().size()
            );
        }        
    }

You can use the method we just created very easily.

Kotlin

    fun main() {
        processSASFile(File("examples/SAS/all-the-code.sas"), File("licenses/strumenta.SAS.license"))
    }

Java

    public static void main(String[] args) {
        processSASFile(new File("examples/SAS/all-the-code.sas"), new File("licenses/strumenta.SAS.license"));        
    }