bundles/org.simantics.scl.runtime/generation/org/simantics/scl/runtime/generation/GenerateTuples.java

   1 package org.simantics.scl.runtime.generation;\r
   2 \r
   3 import java.io.File;\r
   4 import java.io.FileOutputStream;\r
   5 import java.io.PrintStream;\r
   6 import java.net.URL;\r
   7 \r
   8 public class GenerateTuples {\r
   9     public static final String PACKAGE = "org.simantics.scl.runtime.tuple";\r
  10     public static final int MAX_ARITY = 32;\r
  11     \r
  12     public static final String HEADER =\r
  13             "/**\n"\r
  14           + " * This code is generated in " + GenerateTuples.class.getName() + ".\n"\r
  15           + " * Do not edit manually!\n"\r
  16           + " */" \r
  17             ;\r
  18     \r
  19     private static void generateTupleN(PrintStream p, int n) {\r
  20         p.println(HEADER);\r
  21         p.println("package " + PACKAGE + ";");\r
  22         p.println();\r
  23         p.println("public class Tuple" + n + " implements Tuple {");\r
  24         for(int i=0;i<n;++i)\r
  25             p.println("    public final Object c" + i + ";");\r
  26         p.println();\r
  27         p.print("    public Tuple" + n + "(");\r
  28         for(int i=0;i<n;++i) {\r
  29             if(i>0)\r
  30                 p.print(", ");\r
  31             p.print("Object c" + i);\r
  32         }\r
  33         p.println(") {");\r
  34         for(int i=0;i<n;++i)\r
  35             p.println("        this.c" + i + " = c" + i + ";");\r
  36         p.println("    }");\r
  37         p.println();\r
  38         p.println("    public int length() {");\r
  39         p.println("        return " + n + ";");\r
  40         p.println("    }");\r
  41         p.println();\r
  42         p.println("    public Object get(int id) {");\r
  43         p.println("        switch(id) {");\r
  44         for(int i=0;i<n;++i)\r
  45             p.println("        case " + i + ": return c" + i + ";");\r
  46         p.println("        default: throw new IndexOutOfBoundsException();");\r
  47         p.println("        }");\r
  48         p.println("    }");\r
  49         p.println();        \r
  50         p.println("    public Object[] toArray() {");\r
  51         p.print("        return new Object[] { ");\r
  52         for(int i=0;i<n;++i) {\r
  53             if(i > 0)\r
  54                 p.print(", ");\r
  55             p.print("c" + i);\r
  56         }\r
  57         p.println(" };");\r
  58         p.println("    }");\r
  59         p.println();\r
  60         p.println("    @Override");\r
  61         p.println("    public boolean equals(Object obj) {");\r
  62         p.println("        if(obj == this)");\r
  63         p.println("            return true;");\r
  64         p.println("        if(obj == null || obj.getClass() != getClass())");\r
  65         p.println("            return false;");\r
  66         p.println("        Tuple"+n+" tuple = (Tuple"+n+")obj;");\r
  67         for(int i=0;i<n;++i) {\r
  68             p.println("        if(c"+i+" == null) {");\r
  69             p.println("            if(tuple.c"+i+" != null)");\r
  70             p.println("                return false;");\r
  71             p.println("        }");\r
  72             p.println("        else if(!c"+i+".equals(tuple.c"+i+"))");\r
  73             p.println("            return false;");\r
  74         }\r
  75         p.println("        return true;");\r
  76         p.println("    }");\r
  77         p.println();\r
  78         p.println("    @Override");\r
  79         p.println("    public int hashCode() {");\r
  80         p.println("        int result = c0 == null ? 0 : c0.hashCode();");\r
  81         for(int i=1;i<n;++i) {\r
  82             p.println("        result *= 31;");\r
  83             p.println("        if(c"+i+" != null)");\r
  84             p.println("            result += c"+i+".hashCode();");\r
  85         }\r
  86         p.println("        return result;");\r
  87         p.println("    }");\r
  88         p.println();\r
  89         p.println("    @Override");\r
  90         p.println("    public String toString() {");\r
  91         p.println("        StringBuilder b = new StringBuilder();");\r
  92         p.println("        b.append('(');");\r
  93         for(int i=0;i<n;++i) {\r
  94             if(i > 0)\r
  95                 p.println("        b.append(',');");\r
  96             p.println("        b.append(c" + i + ");");\r
  97         }\r
  98         p.println("        b.append(')');");\r
  99         p.println("        return b.toString();");\r
 100         p.println("    }");\r
 101         p.println("}");\r
 102     }\r
 103     \r
 104     public static void main(String[] args) throws Exception {\r
 105         URL url = GenerateFunctions.class.getResource(".");\r
 106         File dir = new File(url.getPath());\r
 107         while(!new File(dir, "src").exists())\r
 108             dir = dir.getParentFile();        \r
 109         dir = new File(dir, "src");\r
 110         dir = new File(dir, PACKAGE.replace('.', '/'));\r
 111         dir.mkdirs();\r
 112         \r
 113         for(int n=2;n<=MAX_ARITY;++n) {\r
 114             PrintStream ps = \r
 115                 new PrintStream(new FileOutputStream(new File(dir, "Tuple"+n+".java")));\r
 116             generateTupleN(ps, n);\r
 117         }\r
 118     }\r
 119 }\r