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