Add all POJOs and implement small subset of the grammar

Project3Java/src/csc426/Project3.java

@@ -5,20 +5,25 @@
 import java.io.InputStreamReader;
 import java.io.FileReader;
 
+import csc426.ast.Program;
+import csc426.syntax.*;
+
 /**
- * Main class for Project 1 -- Scanner for a Subset of YASL (Fall 2015). Scans
- * tokens from standard input and prints the token stream to standard output.
+ * Main class for Project 3
+ * The main method displays the abstract syntax tree (AST)
+ * of the input with proper indentations.
  * 
- * @author bhoward
+ * @author ShutoAraki
  */
 public class Project3 {
+
  public static void main(String[] args) throws IOException {
+
  Scanner scanner = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
- Token token;
- do {
- token = scanner.next();
- System.out.println(token);
- } while (token.type != TokenType.EOF);
- scanner.close();
+ Parser parser = new Parser(scanner);
+ // This Program object is the root of the AST
+ Program program = parser.parseProgram();
+ program.display("");
+
  }
 }

Project3Java/src/csc426/ast/AddOp.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class AddOp {
+
+}

Project3Java/src/csc426/ast/ArgList.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class ArgList {
+
+}

Project3Java/src/csc426/ast/Args.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Args {
+
+}

Project3Java/src/csc426/ast/ArgsRest.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class ArgsRest {
+
+}

Project3Java/src/csc426/ast/Block.java

@@ -0,0 +1,25 @@
+package csc426.ast;
+
+public class Block {
+
+ private ValDecls valDecls;
+// private VarDecls varDecls;
+// private FunDecls funDecls;
+// private Stmt stmt;
+
+// public Block(ValDecls valDecls, VarDecls varDecls, FunDecls funDecls, Stmt stmt) {
+ public Block(ValDecls valDecls) {
+ this.valDecls = valDecls;
+// this.varDecls = varDecls;
+// this.funDecls = funDecls;
+// this.stmt = stmt;
+ }
+
+ public void display(String indentation) {
+ System.out.println(indentation + "Block");
+ valDecls.display(indentation + " ");
+// varDecls.display(indentation + " ");
+// funDecls.display(indentation + " ");
+// stmt.display(indentation + " ");
+ }
+}

Project3Java/src/csc426/ast/Expr.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Expr {
+
+}

Project3Java/src/csc426/ast/ExprRest.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class ExprRest {
+
+}

Project3Java/src/csc426/ast/Factor.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Factor {
+
+}

Project3Java/src/csc426/ast/FactorRest.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class FactorRest {
+
+}

Project3Java/src/csc426/ast/FunDecl.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class FunDecl {
+
+}

Project3Java/src/csc426/ast/FunDecls.java

@@ -0,0 +1,9 @@
+package csc426.ast;
+
+public class FunDecls {
+
+ public void display(String indentation) {
+ // TODO Auto-generated method stub
+ }
+
+}

Project3Java/src/csc426/ast/Item.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Item {
+
+}

Project3Java/src/csc426/ast/Items.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Items {
+
+}

Project3Java/src/csc426/ast/ItemsRest.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class ItemsRest {
+
+}

Project3Java/src/csc426/ast/MulOp.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class MulOp {
+
+}

Project3Java/src/csc426/ast/Param.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Param {
+
+}

Project3Java/src/csc426/ast/ParamList.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class ParamList {
+
+}

Project3Java/src/csc426/ast/Params.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Params {
+
+}

Project3Java/src/csc426/ast/ParamsRest.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class ParamsRest {
+
+}

Project3Java/src/csc426/ast/Program.java

@@ -0,0 +1,19 @@
+package csc426.ast;
+
+public class Program {
+
+ private String name;
+ private Block block;
+
+ public Program(String name, Block block) {
+ this.name = name;
+ this.block = block;
+ }
+
+ public String getName() { return name; }
+ public Block getBlock() { return block; }
+ public void display(String indentation) {
+ System.out.println(indentation + "Program " + name);
+ block.display(indentation + " ");
+ }
+} 

Project3Java/src/csc426/ast/RelOp.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class RelOp {
+
+}

Project3Java/src/csc426/ast/SERest.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class SERest {
+
+}

Project3Java/src/csc426/ast/SimpleExpr.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class SimpleExpr {
+
+}

Project3Java/src/csc426/ast/Stmt.java

@@ -0,0 +1,10 @@
+package csc426.ast;
+
+public class Stmt {
+
+ public void display(String indentation) {
+ // TODO Auto-generated method stub
+
+ }
+
+}

Project3Java/src/csc426/ast/StmtList.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class StmtList {
+
+}

Project3Java/src/csc426/ast/Stmts.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Stmts {
+
+}

Project3Java/src/csc426/ast/Term.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Term {
+
+}

Project3Java/src/csc426/ast/TermRest.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class TermRest {
+
+}

Project3Java/src/csc426/ast/Type.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class Type {
+
+}

Project3Java/src/csc426/ast/UnOp.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class UnOp {
+
+}

Project3Java/src/csc426/ast/ValDecl.java

@@ -0,0 +1,16 @@
+package csc426.ast;
+
+public class ValDecl {
+
+ private String id;
+ private int num;
+
+ public ValDecl(String id, int num) {
+ this.id = id;
+ this.num = num;
+ }
+
+ public void display(String indentation) {
+ System.out.println(indentation + "Val " + id + " = " + num);
+ }
+}

Project3Java/src/csc426/ast/ValDecls.java

@@ -0,0 +1,19 @@
+package csc426.ast;
+
+import java.util.List;
+
+public class ValDecls {
+
+ private List<ValDecl> vals;
+
+ public ValDecls(List<ValDecl> vals) {
+ this.vals = vals;
+ }
+
+ public void display(String indentation) {
+ for (ValDecl val : vals) {
+ val.display(indentation + " ");
+ }
+ }
+
+}

Project3Java/src/csc426/ast/VarDecl.java

@@ -0,0 +1,5 @@
+package csc426.ast;
+
+public class VarDecl {
+
+}

Project3Java/src/csc426/ast/VarDecls.java

@@ -0,0 +1,10 @@
+package csc426.ast;
+
+public class VarDecls {
+
+ public void display(String indentation) {
+ // TODO Auto-generated method stub
+
+ }
+
+}