bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/elaboration/matching/Row.java

   1 package org.simantics.scl.compiler.internal.elaboration.matching;
   2
   3
   4 import java.util.Arrays;
   5
   6 import org.simantics.scl.compiler.elaboration.expressions.Expression;
   7
   8 public class Row {
   9     Expression[] patterns;
  10     Expression value;
  11
  12     public Row(Expression[] patterns, Expression value) {
  13         this.patterns = patterns;
  14         this.value = value;
  15     }
  16
  17     public Row replace(int columnToReplace, Expression[] substitution) {
  18         Expression[] newPatterns = new Expression[patterns.length-1+substitution.length];
  19         int j=0;
  20         for(int i=0;i<columnToReplace;++i)
  21             newPatterns[j++] = patterns[i];
  22         for(int i=0;i<substitution.length;++i)
  23             newPatterns[j++] = substitution[i];
  24         for(int i=columnToReplace+1;i<patterns.length;++i)
  25             newPatterns[j++] = patterns[i];
  26         return new Row(newPatterns, value);
  27     }
  28
  29     @Override
  30     public String toString() {
  31         return Arrays.toString(patterns) + " -> " + value;
  32     }
  33 }