gerrit.simantics Code Review - simantics/platform.git/blob

   1 package org.simantics.scl.compiler.elaboration.expressions;\r
   2 \r
   3 import gnu.trove.map.hash.TObjectIntHashMap;\r
   4 import gnu.trove.set.hash.THashSet;\r
   5 import gnu.trove.set.hash.TIntHashSet;\r
   6 \r
   7 import java.util.ArrayList;\r
   8 import java.util.Collections;\r
   9 import java.util.Comparator;\r
  10 \r
  11 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;\r
  12 import org.simantics.scl.compiler.elaboration.contexts.TypingContext;\r
  13 import org.simantics.scl.compiler.elaboration.query.Query;\r
  14 import org.simantics.scl.compiler.elaboration.rules.TransformationRule;\r
  15 import org.simantics.scl.compiler.errors.Locations;\r
  16 import org.simantics.scl.compiler.internal.elaboration.transformations.TransformationBuilder;\r
  17 import org.simantics.scl.compiler.internal.elaboration.utils.ExpressionDecorator;\r
  18 import org.simantics.scl.compiler.top.SCLCompilerConfiguration;\r
  19 import org.simantics.scl.compiler.types.Type;\r
  20 import org.simantics.scl.compiler.types.Types;\r
  21 import org.simantics.scl.compiler.types.exceptions.MatchException;\r
  22 \r
  23 public class ETransformation extends SimplifiableExpression {\r
  24     public static final Object TRANSFORMATION_RULES_TYPECHECKED = new Object();\r
  25     \r
  26     public final String name;\r
  27     public Query seed;\r
  28     \r
  29     public ETransformation(String name, Query seed) {\r
  30         this.name = name;\r
  31         this.seed = seed;\r
  32     }\r
  33 \r
  34     @Override\r
  35     public void collectRefs(TObjectIntHashMap<Object> allRefs,\r
  36             TIntHashSet refs) {\r
  37         {\r
  38             int ref = allRefs.get(TRANSFORMATION_RULES_TYPECHECKED);\r
  39             if(ref >= 0)\r
  40                 refs.add(ref);\r
  41         }\r
  42         seed.collectRefs(allRefs, refs);\r
  43     }\r
  44 \r
  45     @Override\r
  46     public void collectVars(TObjectIntHashMap<Variable> allVars,\r
  47             TIntHashSet vars) {\r
  48         seed.collectVars(allVars, vars);\r
  49     }\r
  50 \r
  51     @Override\r
  52     protected void updateType() throws MatchException {\r
  53         setType(Types.UNIT);\r
  54     }\r
  55 \r
  56     @Override\r
  57     public void collectFreeVariables(THashSet<Variable> vars) {\r
  58         seed.collectFreeVariables(vars);\r
  59     }\r
  60     \r
  61     @Override\r
  62     public Expression inferType(TypingContext context) {\r
  63         context.declareEffect(location, Types.PROC);\r
  64         seed.checkType(context);\r
  65         return compile(context);\r
  66     }\r
  67 \r
  68     private Expression compile(TypingContext context) {\r
  69         ArrayList<TransformationRule> rules = new ArrayList<TransformationRule>(); \r
  70         context.getEnvironment().collectRules(rules);\r
  71         Collections.sort(rules, new Comparator<TransformationRule>() {\r
  72             @Override\r
  73             public int compare(TransformationRule o1, TransformationRule o2) {\r
  74                 return Integer.compare(Locations.beginOf(o1.location), Locations.beginOf(o2.location));\r
  75             }\r
  76         });\r
  77        \r
  78         // Translation\r
  79         TransformationBuilder tb = new TransformationBuilder(context.getErrorLog(), context);\r
  80         tb.handleSeed(seed);\r
  81         for(TransformationRule rule : rules)\r
  82             if(!rule.isAbstract)\r
  83                 tb.handleRule(rule);\r
  84         Expression expression = tb.compileRules();\r
  85         \r
  86         if(SCLCompilerConfiguration.SHOW_COMPILED_RULES)\r
  87             System.out.println(expression);\r
  88         return expression;\r
  89     }\r
  90 \r
  91     @Override\r
  92     public Expression resolve(TranslationContext context) {\r
  93         seed = seed.resolve(context);\r
  94         return this;\r
  95     }\r
  96 \r
  97     @Override\r
  98     public void setLocationDeep(long loc) {\r
  99         if(location == Locations.NO_LOCATION) {\r
 100             location = loc;\r
 101             seed.setLocationDeep(loc);\r
 102         }\r
 103     }\r
 104 \r
 105     @Override\r
 106     public Expression decorate(ExpressionDecorator decorator) {\r
 107         return decorator.decorate(this);\r
 108     }\r
 109 \r
 110     @Override\r
 111     public void collectEffects(THashSet<Type> effects) {\r
 112         effects.add(Types.PROC);\r
 113         //seed.collectEffects(Query.RW, effects); // FIXME\r
 114     }\r
 115 \r
 116     @Override\r
 117     public void accept(ExpressionVisitor visitor) {\r
 118         visitor.visit(this);\r
 119     }\r
 120 \r
 121     @Override\r
 122     public void forVariables(VariableProcedure procedure) {\r
 123         seed.forVariables(procedure);\r
 124     }\r
 125     \r
 126     @Override\r
 127     public Expression accept(ExpressionTransformer transformer) {\r
 128         return transformer.transform(this);\r
 129     }\r
 130 \r
 131 }\r