added sableCC calculator

8 files changed, 245 insertions, 0 deletions

diff --git a/code/simpleSableCCCalulator/README.md b/code/simpleSableCCCalulator/README.md
new file mode 100644
index 0000000..4c75421
--- /dev/null
+++ b/code/simpleSableCCCalulator/README.md
@@ -0,0 +1,20 @@
+# simpleSableCCCalculator
+
+sableCC is a too used to parse .grammar files (containing a BNF, and lexer information)
+into a lexer and parser. We can do a depth first traversal of the produced abstract syntax tree
+to parse in the correct order. This is in the file `Translation.java`.
+
+You produce a lexer and parser by running the sablecc .jar file you can download [here](http://downloads.sourceforge.net/sablecc/sablecc-3.7.zip). Then run it with the first argument as the grammar file:
+
+`java -jar sablecc-3.7/lib/sablecc.jar sableCCCalculator.grammar`
+
+(changing the paths as appropriate). The produced java files are not included in git since they're unnessicary. We compile the compiler, program stack and translator:
+
+`javac sableCCCalculator/*.java`
+
+Then we can run the program. For now it only works by reading files. There are some example maths questions in the examples folder:
+
+`java sableCCCalculator.Compiler examples/maths.txt`
+
+
+
diff --git a/code/simpleSableCCCalulator/examples/maths.txt b/code/simpleSableCCCalulator/examples/maths.txt
new file mode 100644
index 0000000..f3b3bd9
--- /dev/null
+++ b/code/simpleSableCCCalulator/examples/maths.txt
@@ -0,0 +1 @@
+(36/2 + 45) * 3
\ No newline at end of file
diff --git a/code/simpleSableCCCalulator/examples/maths2.txt b/code/simpleSableCCCalulator/examples/maths2.txt
new file mode 100644
index 0000000..1f1d63e
--- /dev/null
+++ b/code/simpleSableCCCalulator/examples/maths2.txt
@@ -0,0 +1 @@
+sin(45 * 3) / 3
\ No newline at end of file
diff --git a/code/simpleSableCCCalulator/examples/maths3.txt b/code/simpleSableCCCalulator/examples/maths3.txt
new file mode 100644
index 0000000..e092af1
--- /dev/null
+++ b/code/simpleSableCCCalulator/examples/maths3.txt
@@ -0,0 +1 @@
+3-1+2
\ No newline at end of file
diff --git a/code/simpleSableCCCalulator/sableCCCalculator.grammar b/code/simpleSableCCCalulator/sableCCCalculator.grammar
new file mode 100644
index 0000000..426fac1
--- /dev/null
+++ b/code/simpleSableCCCalulator/sableCCCalculator.grammar
@@ -0,0 +1,35 @@
+Package sableCCCalculator;
+Helpers
+    digit = ['0' .. '9'];
+Tokens
+    number = digit+;
+    double = ((digit)+ '.' (digit)*) | ((digit)* '.' (digit)+);
+    plus = '+';
+    minus = '-';
+    mult = '*';
+    div = '/';
+    mod = '%';
+    l_par = '(';
+    r_par = ')';
+    sin = 'sin';
+    blank = (' ' | 13 | 10)+;
+Ignored Tokens
+    blank;
+Productions
+    expr =
+        {factor} factor |
+        {plus} expr plus factor |
+        {minus} expr minus factor 
+        ;
+    factor =
+        {term} term |
+        {mult} factor mult term |
+        {div} factor div term |
+        {mod} factor mod term
+        ;
+    term =
+        {number} number |
+        {double} double |
+        {expr} l_par expr r_par |
+        {sine} sin l_par expr r_par
+        ;
\ No newline at end of file
diff --git a/code/simpleSableCCCalulator/sableCCCalculator/Compiler.java b/code/simpleSableCCCalulator/sableCCCalculator/Compiler.java
new file mode 100644
index 0000000..7430cfe
--- /dev/null
+++ b/code/simpleSableCCCalulator/sableCCCalculator/Compiler.java
@@ -0,0 +1,27 @@
+package sableCCCalculator;
+import sableCCCalculator.parser.*;
+import sableCCCalculator.lexer.*;
+import sableCCCalculator.node.*;
+import java.io.*;
+
+public class Compiler
+{
+    public static void main(String[] args)
+    {
+        try
+        {
+            System.out.println("Using source file: " + args[0]);
+            // Create a Parser instance.
+            Parser p = new Parser(new Lexer(new PushbackReader(new InputStreamReader(new FileInputStream(args[0])), 1024)));
+            // Parse the input.
+            Start tree = p.parse();
+            // Apply the translation.
+            tree.apply(new Translation());
+            System.out.println("");
+        }
+        catch(Exception e)
+        {
+            System.out.println(e.getMessage());
+        }
+    }
+}
\ No newline at end of file
diff --git a/code/simpleSableCCCalulator/sableCCCalculator/ProgramStack.java b/code/simpleSableCCCalulator/sableCCCalculator/ProgramStack.java
new file mode 100644
index 0000000..1875e57
--- /dev/null
+++ b/code/simpleSableCCCalulator/sableCCCalculator/ProgramStack.java
@@ -0,0 +1,28 @@
+package sableCCCalculator;
+import sableCCCalculator.node.*;
+import java.util.Stack;
+
+public class ProgramStack<T extends Token> extends Stack<T> {
+    
+    public String toString() {
+        String out = "Stack is now: [";
+        for (int i = 0; i < this.size(); i++) {
+            String theStr = this.elementAt(i).toString();
+            out += String.format("%s, ", theStr.substring(0, theStr.length() - 1));
+        }
+        return out.substring(0, out.length() - 2) + "]";
+    }
+
+    public static void main(String[] args) {
+        ProgramStack<Token> myStack = new ProgramStack<>();
+        myStack.add(new TNumber("2"));
+        myStack.add(new TNumber("4"));
+        myStack.add(new TNumber("6"));
+        myStack.add(new TNumber("0"));
+        myStack.add(new TNumber("1"));
+        myStack.add(new TDouble("24601.10642"));
+
+        System.out.println(myStack.pop().getText());
+        System.out.println(myStack);
+    }
+}
diff --git a/code/simpleSableCCCalulator/sableCCCalculator/Translation.java b/code/simpleSableCCCalulator/sableCCCalculator/Translation.java
new file mode 100644
index 0000000..d8fd74d
--- /dev/null
+++ b/code/simpleSableCCCalulator/sableCCCalculator/Translation.java
@@ -0,0 +1,132 @@
+package sableCCCalculator;
+import sableCCCalculator.analysis.*;
+import sableCCCalculator.node.*;
+
+class Translation extends DepthFirstAdapter
+{
+    private ProgramStack<Token> programStack = new ProgramStack<>();
+
+    public void caseTNumber(TNumber node)
+    {
+        System.out.println("Pushing " + Integer.parseInt(node.getText()) + " to stack");
+        programStack.push(node);
+        System.out.println(programStack);
+    }
+
+    public void caseTDouble(TDouble node)
+    {
+        System.out.println("Pushing a double: " + Double.parseDouble(node.getText()));
+        programStack.push(node);
+        System.out.println(programStack);
+    }
+
+    public void outASineTerm(ASineTerm node) 
+    {
+        Double num = Double.parseDouble(programStack.pop().getText());
+        System.out.println("Popped " + num);
+        Double out = Math.sin(Math.toRadians(num));
+        programStack.push(new TDouble(String.format("%f", out)));
+        System.out.println("Pushed sin(" + num + ") = " + out + " to stack");
+        System.out.println(programStack);
+    }
+
+    public void outAPlusExpr(APlusExpr node)
+    {
+        Double num2 = Double.parseDouble(programStack.pop().getText());
+        Double num1 = Double.parseDouble(programStack.pop().getText());
+        System.out.println("Popped " + num1 + " and " + num2 + " from stack");
+        Double out = num1 + num2;
+        if ((out % 1) == 0) 
+        {
+            // the output is an integer, change types to save memory
+            programStack.push(new TNumber(String.format("%d", out.intValue())));
+        }
+        else
+        {
+            programStack.push(new TDouble(String.format("%f", out)));
+        }
+        
+        System.out.println("Pushed " + num1 + "+" + num2 + "=" + out + " to stack");
+        System.out.println(programStack);
+    }
+
+    public void outAMinusExpr(AMinusExpr node)
+    {
+        Double num2 = Double.parseDouble(programStack.pop().getText());
+        Double num1 = Double.parseDouble(programStack.pop().getText());
+        System.out.println("Popped " + num1 + " and " + num2 + " from stack");
+        Double out = num1 - num2;
+        if ((out % 1) == 0) 
+        {
+            // the output is an integer, change types to save memory
+            programStack.push(new TNumber(String.format("%d", out.intValue())));
+        }
+        else
+        {
+            programStack.push(new TDouble(String.format("%f", out)));
+        }
+        
+        System.out.println("Pushed " + num1 + "-" + num2 + "=" + out + " to stack");
+        System.out.println(programStack);
+    }
+
+    public void outAMultFactor(AMultFactor node)
+    {
+        Double num2 = Double.parseDouble(programStack.pop().getText());
+        Double num1 = Double.parseDouble(programStack.pop().getText());
+        System.out.println("Popped " + num1 + " and " + num2 + " from stack");
+        Double out = num1 * num2;
+        if ((out % 1) == 0) 
+        {
+            // the output is an integer, change types to save memory
+            programStack.push(new TNumber(String.format("%d", out.intValue())));
+        }
+        else
+        {
+            programStack.push(new TDouble(String.format("%f", out)));
+        }
+        
+        System.out.println("Pushed " + num1 + "*" + num2 + "=" + out + " to stack");
+        System.out.println(programStack);
+    }
+
+    public void outADivFactor(ADivFactor node)
+    {
+        Double num2 = Double.parseDouble(programStack.pop().getText());
+        Double num1 = Double.parseDouble(programStack.pop().getText());
+        System.out.println("Popped " + num1 + " and " + num2 + " from stack");
+        Double out = num1 / num2;
+        if ((out % 1) == 0) 
+        {
+            // the output is an integer, change types to save memory
+            programStack.push(new TNumber(String.format("%d", out.intValue())));
+        }
+        else
+        {
+            programStack.push(new TDouble(String.format("%f", out)));
+        }
+        
+        System.out.println("Pushed " + num1 + "/" + num2 + "=" + out + " to stack");
+        System.out.println(programStack);
+    }
+
+    public void outAModFactor(AModFactor node)
+    {
+        Double num2 = Double.parseDouble(programStack.pop().getText());
+        Double num1 = Double.parseDouble(programStack.pop().getText());
+        System.out.println("Popped " + num1 + " and " + num2 + " from stack");
+        Double out = num1 % num2;
+        if ((out % 1) == 0) 
+        {
+            // the output is an integer, change types to save memory
+            programStack.push(new TNumber(String.format("%d", out.intValue())));
+        }
+        else
+        {
+            programStack.push(new TDouble(String.format("%f", out)));
+        }
+        
+        System.out.println("Pushed " + num1 + "%" + num2 + "=" + out + " to stack");
+        System.out.println(programStack);
+    }
+}