Lab 4 Revision 2 Was worked on by both John and I. The file titled AST.java contains lab 4.

Lab 5 Worked on by John and I Language Grammar:

Valid Code: CONNECT 255.255.255.255:80 READ ALL DATA USE DATABASE testdb@localhost PUT INTO testdb READ ALL DATA FROM testdb.table PRESENT WITH FORMAT x

Invalid Code: Any other commands not listed above

Generated Code using GOLD Parser: public interface SymbolConstants { final int SYMBOL_EOF = 0; // (EOF) final int SYMBOL_ERROR = 1; // (Error) final int SYMBOL_WHITESPACE = 2; // (Whitespace) final int SYMBOL_LINE = 3; // Line final int SYMBOL_NEW = 4; // New final int SYMBOL_STRING = 5; // String final int SYMBOL_ARG = 6; // final int SYMBOL_COMMAND = 7; // final int SYMBOL_PROGRAM = 8; // final int SYMBOL_STMTS = 9; // final int SYMBOL_STMTMINUSTYPE = 10; // };

public interface RuleConstants { final int RULE_PROGRAM = 0; // ::= final int RULE_STMTS = 1; // ::= final int RULE_STMTS2 = 2; // ::= final int RULE_STMTTYPE = 3; // ::= final int RULE_COMMAND_STRING = 4; // ::= String final int RULE_ARG_STRING = 5; // ::= String final int RULE_ARG_NEW_LINE = 6; // ::= New Line };

We were unable to get it working.

Lab 6 Semantics errors: Our program will catch if a person puts in more than one command and one argument.

public class SemanticAnalysisVisitor extends Visitor { public void visitCommandError (CommandError n) { System.out.println("ERROR: You cannot have more than one command per line."); } public void visitArguError (ArguError n) { System.out.println("ERROR: You cannot have more than one argument per line."); } public void visitDoubleError (DoubleError n) { System.out.println("ERROR: You cannot have more than one command and more than one argument per line."); } }

Test case: Connect 255.255.255.255:80 vs Connect 255.255.255.255 Port 80