X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.scl.runtime%2Fgeneration%2Forg%2Fsimantics%2Fscl%2Fruntime%2Fgeneration%2FGenerateTuples.java;fp=bundles%2Forg.simantics.scl.runtime%2Fgeneration%2Forg%2Fsimantics%2Fscl%2Fruntime%2Fgeneration%2FGenerateTuples.java;h=291d68bcb959b3e04cf6770794949f021f4710fc;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scl.runtime/generation/org/simantics/scl/runtime/generation/GenerateTuples.java b/bundles/org.simantics.scl.runtime/generation/org/simantics/scl/runtime/generation/GenerateTuples.java
new file mode 100755
index 000000000..291d68bcb
--- /dev/null
+++ b/bundles/org.simantics.scl.runtime/generation/org/simantics/scl/runtime/generation/GenerateTuples.java
@@ -0,0 +1,119 @@
+package org.simantics.scl.runtime.generation;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.PrintStream;
+import java.net.URL;
+
+public class GenerateTuples {
+    public static final String PACKAGE = "org.simantics.scl.runtime.tuple";
+    public static final int MAX_ARITY = 32;
+    
+    public static final String HEADER =
+            "/**\n"
+          + " * This code is generated in " + GenerateTuples.class.getName() + ".\n"
+          + " * Do not edit manually!\n"
+          + " */" 
+            ;
+    
+    private static void generateTupleN(PrintStream p, int n) {
+        p.println(HEADER);
+        p.println("package " + PACKAGE + ";");
+        p.println();
+        p.println("public class Tuple" + n + " implements Tuple {");
+        for(int i=0;i<n;++i)
+            p.println("    public final Object c" + i + ";");
+        p.println();
+        p.print("    public Tuple" + n + "(");
+        for(int i=0;i<n;++i) {
+            if(i>0)
+                p.print(", ");
+            p.print("Object c" + i);
+        }
+        p.println(") {");
+        for(int i=0;i<n;++i)
+            p.println("        this.c" + i + " = c" + i + ";");
+        p.println("    }");
+        p.println();
+        p.println("    public int length() {");
+        p.println("        return " + n + ";");
+        p.println("    }");
+        p.println();
+        p.println("    public Object get(int id) {");
+        p.println("        switch(id) {");
+        for(int i=0;i<n;++i)
+            p.println("        case " + i + ": return c" + i + ";");
+        p.println("        default: throw new IndexOutOfBoundsException();");
+        p.println("        }");
+        p.println("    }");
+        p.println();        
+        p.println("    public Object[] toArray() {");
+        p.print("        return new Object[] { ");
+        for(int i=0;i<n;++i) {
+            if(i > 0)
+                p.print(", ");
+            p.print("c" + i);
+        }
+        p.println(" };");
+        p.println("    }");
+        p.println();
+        p.println("    @Override");
+        p.println("    public boolean equals(Object obj) {");
+        p.println("        if(obj == this)");
+        p.println("            return true;");
+        p.println("        if(obj == null || obj.getClass() != getClass())");
+        p.println("            return false;");
+        p.println("        Tuple"+n+" tuple = (Tuple"+n+")obj;");
+        for(int i=0;i<n;++i) {
+            p.println("        if(c"+i+" == null) {");
+            p.println("            if(tuple.c"+i+" != null)");
+            p.println("                return false;");
+            p.println("        }");
+            p.println("        else if(!c"+i+".equals(tuple.c"+i+"))");
+            p.println("            return false;");
+        }
+        p.println("        return true;");
+        p.println("    }");
+        p.println();
+        p.println("    @Override");
+        p.println("    public int hashCode() {");
+        p.println("        int result = c0 == null ? 0 : c0.hashCode();");
+        for(int i=1;i<n;++i) {
+            p.println("        result *= 31;");
+            p.println("        if(c"+i+" != null)");
+            p.println("            result += c"+i+".hashCode();");
+        }
+        p.println("        return result;");
+        p.println("    }");
+        p.println();
+        p.println("    @Override");
+        p.println("    public String toString() {");
+        p.println("        StringBuilder b = new StringBuilder();");
+        p.println("        b.append('(');");
+        for(int i=0;i<n;++i) {
+            if(i > 0)
+                p.println("        b.append(',');");
+            p.println("        b.append(c" + i + ");");
+        }
+        p.println("        b.append(')');");
+        p.println("        return b.toString();");
+        p.println("    }");
+        p.println("}");
+    }
+    
+    public static void main(String[] args) throws Exception {
+        URL url = GenerateFunctions.class.getResource(".");
+        File dir = new File(url.getPath());
+        while(!new File(dir, "src").exists())
+            dir = dir.getParentFile();        
+        dir = new File(dir, "src");
+        dir = new File(dir, PACKAGE.replace('.', '/'));
+        dir.mkdirs();
+        
+        for(int n=2;n<=MAX_ARITY;++n) {
+            PrintStream ps = 
+                new PrintStream(new FileOutputStream(new File(dir, "Tuple"+n+".java")));
+            generateTupleN(ps, n);
+        }
+    }
+}