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

   1 package org.simantics.scl.compiler.elaboration.expressions;
   2
   3
   4 import org.simantics.scl.compiler.common.exceptions.InternalCompilerError;
   5 import org.simantics.scl.compiler.common.names.Names;
   6 import org.simantics.scl.compiler.constants.DoubleConstant;
   7 import org.simantics.scl.compiler.constants.FloatConstant;
   8 import org.simantics.scl.compiler.constants.IntegerConstant;
   9 import org.simantics.scl.compiler.constants.LongConstant;
  10 import org.simantics.scl.compiler.elaboration.contexts.ReplaceContext;
  11 import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;
  12 import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;
  13 import org.simantics.scl.compiler.elaboration.contexts.TypingContext;
  14 import org.simantics.scl.compiler.errors.Locations;
  15 import org.simantics.scl.compiler.internal.elaboration.utils.ExpressionDecorator;
  16 import org.simantics.scl.compiler.types.Type;
  17 import org.simantics.scl.compiler.types.Types;
  18 import org.simantics.scl.compiler.types.exceptions.MatchException;
  19
  20 import gnu.trove.map.hash.TObjectIntHashMap;
  21 import gnu.trove.set.hash.THashSet;
  22 import gnu.trove.set.hash.TIntHashSet;
  23
  24 public class EIntegerLiteral extends SimplifiableExpression {
  25     public String value;
  26     EVariable constraint;
  27
  28     public EIntegerLiteral(String value) {
  29         this.value = value;
  30     }
  31
  32     @Override
  33     public void collectRefs(TObjectIntHashMap<Object> allRefs,
  34             TIntHashSet refs) {
  35     }
  36
  37     @Override
  38     public void collectVars(TObjectIntHashMap<Variable> allVars,
  39             TIntHashSet vars) {
  40     }
  41
  42     public String getValue() {
  43         return value;
  44     }
  45
  46     private Expression tryToConvertToPrimitive(Type requiredType) {
  47         if(requiredType.equals(Types.INTEGER))
  48             return new ELiteral(new IntegerConstant(Integer.parseInt(value)));
  49         else if(requiredType.equals(Types.DOUBLE))
  50             return new ELiteral(new DoubleConstant(Double.parseDouble(value)));
  51         else if(requiredType.equals(Types.FLOAT))
  52             return new ELiteral(new FloatConstant(Float.parseFloat(value)));
  53         else if(requiredType.equals(Types.LONG))
  54             return new ELiteral(new LongConstant(Long.parseLong(value)));
  55         else
  56             return null;
  57     }
  58
  59     @Override
  60     public Expression checkBasicType(TypingContext context, Type requiredType) {
  61         requiredType = Types.canonical(requiredType);
  62
  63         try {
  64             Expression primitive = tryToConvertToPrimitive(requiredType);
  65             if(primitive != null)
  66                 return primitive;
  67         } catch(NumberFormatException e) {
  68             context.getErrorLog().log(getLocation(), "Invalid number format.");
  69         }
  70
  71         setType(requiredType);
  72         constraint = new EVariable(location, null);
  73         constraint.setType(Types.pred(Types.RING, requiredType));
  74         context.addConstraintDemand(constraint);
  75         return this;
  76     }
  77
  78     @Override
  79     protected void updateType() throws MatchException {
  80         throw new InternalCompilerError();
  81     }
  82
  83     @Override
  84     public void collectFreeVariables(THashSet<Variable> vars) {
  85     }
  86
  87     @Override
  88     public Expression simplify(SimplificationContext context) {
  89         try {
  90             Expression primitive = tryToConvertToPrimitive(Types.canonical(getType()));
  91             if(primitive != null)
  92                 return primitive;
  93             return context.apply(
  94                     context.getConstant(Names.Prelude_fromInteger, getType()),
  95                     constraint.simplify(context),
  96                     context.literal(new IntegerConstant(Integer.parseInt(value)))
  97                     );
  98         } catch(NumberFormatException e) {
  99             context.getErrorLog().log(getLocation(), "Invalid number format (maybe too long for the expected number type).");
 100             return this;
 101         }
 102     }
 103
 104     @Override
 105     public Expression resolve(TranslationContext context) {
 106         return this;
 107     }
 108
 109     @Override
 110     public Expression resolveAsPattern(TranslationContext context) {
 111         return this;
 112     }
 113
 114     @Override
 115     public Expression replace(ReplaceContext context) {
 116         EIntegerLiteral copy = new EIntegerLiteral(value);
 117         copy.setType(getType().replace(context.tvarMap));
 118         copy.constraint = (EVariable)constraint.replace(context);
 119         return copy;
 120     }
 121
 122     @Override
 123     public Expression decorate(ExpressionDecorator decorator) {
 124         return decorator.decorate(this);
 125     }
 126
 127     @Override
 128     public boolean isEffectful() {
 129         return false;
 130     }
 131
 132     @Override
 133     public void collectEffects(THashSet<Type> effects) {
 134     }
 135
 136     @Override
 137     public void setLocationDeep(long loc) {
 138         if(location == Locations.NO_LOCATION) {
 139             location = loc;
 140             if(constraint != null)
 141                 constraint.setLocationDeep(loc);
 142         }
 143     }
 144
 145     @Override
 146     public void accept(ExpressionVisitor visitor) {
 147         visitor.visit(this);
 148     }
 149
 150     @Override
 151     public void forVariables(VariableProcedure procedure) {
 152         if(constraint != null)
 153             constraint.forVariables(procedure);
 154     }
 155
 156     @Override
 157     public boolean isPattern(int arity) {
 158         return arity == 0;
 159     }
 160
 161     @Override
 162     public Expression accept(ExpressionTransformer transformer) {
 163         return transformer.transform(this);
 164     }
 165
 166 }