--- /dev/null
+package org.simantics.scl.compiler.elaboration.expressions;\r
+\r
+import gnu.trove.map.hash.TObjectIntHashMap;\r
+import gnu.trove.set.hash.THashSet;\r
+import gnu.trove.set.hash.TIntHashSet;\r
+\r
+import org.simantics.scl.compiler.common.names.Name;\r
+import org.simantics.scl.compiler.elaboration.contexts.SimplificationContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.TypingContext;\r
+import org.simantics.scl.compiler.elaboration.expressions.accessor.FieldAccessor;\r
+import org.simantics.scl.compiler.errors.Locations;\r
+import org.simantics.scl.compiler.internal.elaboration.utils.ExpressionDecorator;\r
+import org.simantics.scl.compiler.types.Type;\r
+import org.simantics.scl.compiler.types.Types;\r
+import org.simantics.scl.compiler.types.exceptions.MatchException;\r
+\r
+public class EFieldAccess extends SimplifiableExpression {\r
+\r
+ private static final Type VARIABLE = Types.con("Simantics/Variables", "Variable");\r
+ \r
+ Expression parent;\r
+ FieldAccessor[] accessors;\r
+\r
+ public EFieldAccess(Expression parent, FieldAccessor[] accessors) {\r
+ if(parent instanceof EFieldAccess) {\r
+ EFieldAccess parentAccess = (EFieldAccess)parent;\r
+ parent = parentAccess.parent;\r
+ accessors = concat(parentAccess.accessors, accessors);\r
+ }\r
+ this.parent = parent;\r
+ this.accessors = accessors;\r
+ }\r
+\r
+ @Override\r
+ public void collectRefs(TObjectIntHashMap<Object> allRefs,\r
+ TIntHashSet refs) {\r
+ parent.collectRefs(allRefs, refs);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.collectRefs(allRefs, refs);\r
+ }\r
+\r
+ @Override\r
+ public void collectVars(TObjectIntHashMap<Variable> allVars,\r
+ TIntHashSet vars) {\r
+ parent.collectVars(allVars, vars);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.collectVars(allVars, vars);\r
+ }\r
+\r
+ private boolean returnsValue() {\r
+ FieldAccessor lastAccessor = accessors[accessors.length-1];\r
+ return lastAccessor.accessSeparator=='#' && !lastAccessor.isVariableId();\r
+ }\r
+\r
+ @Override\r
+ protected void updateType() throws MatchException {\r
+ // Type is already updated in checkBasicType\r
+ }\r
+ \r
+ @Override\r
+ public Expression checkBasicType(TypingContext context, Type requiredType) {\r
+ if(returnsValue())\r
+ setType(requiredType);\r
+ else {\r
+ setType(VARIABLE);\r
+ context.subsume(this, requiredType);\r
+ }\r
+ parent = parent.checkType(context, VARIABLE);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.checkType(context);\r
+ context.declareEffect(getLocation(), Types.READ_GRAPH);\r
+ return this;\r
+ }\r
+\r
+ @Override\r
+ public void collectFreeVariables(THashSet<Variable> vars) {\r
+ parent.collectFreeVariables(vars);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.collectFreeVariables(vars);\r
+ }\r
+\r
+ private static final Name CHILD = Name.create("Simantics/Variables", "child_");\r
+ private static final Name PROPERTY = Name.create("Simantics/Variables", "property");\r
+ private static final Name PROPERTY_VALUE = Name.create("Simantics/Variables", "untypedPropertyValue");\r
+\r
+ @Override\r
+ public Expression simplify(SimplificationContext context) {\r
+ // Simplify subexpressions\r
+ parent = parent.simplify(context);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.simplify(context);\r
+ \r
+ // ...\r
+ Expression result = parent;\r
+ for(int i=0;i<accessors.length;++i) {\r
+ FieldAccessor accessor = accessors[i];\r
+ if(accessor.accessSeparator == '.')\r
+ result = new EApply(\r
+ getLocation(),\r
+ Types.READ_GRAPH,\r
+ context.getConstant(CHILD),\r
+ result,\r
+ accessor.asExpression()\r
+ );\r
+ else if(i < accessors.length-1)\r
+ result = new EApply(\r
+ getLocation(),\r
+ Types.READ_GRAPH,\r
+ context.getConstant(PROPERTY),\r
+ result,\r
+ accessor.asExpression()\r
+ );\r
+ else if(accessor.isVariableId())\r
+ ;\r
+ else\r
+ result = new EApply(\r
+ getLocation(),\r
+ Types.READ_GRAPH,\r
+ context.getConstant(PROPERTY_VALUE, getType()),\r
+ result,\r
+ accessor.asExpression()\r
+ );\r
+ }\r
+ return result;\r
+ }\r
+\r
+ private static FieldAccessor[] concat(FieldAccessor[] accessors1,\r
+ FieldAccessor[] accessors2) {\r
+ FieldAccessor[] result = new FieldAccessor[accessors1.length + accessors2.length];\r
+ System.arraycopy(accessors1, 0, result, 0, accessors1.length);\r
+ System.arraycopy(accessors2, 0, result, accessors1.length, accessors2.length);\r
+ return result;\r
+ }\r
+\r
+ @Override\r
+ public Expression resolve(TranslationContext context) {\r
+ parent = parent.resolve(context);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.resolve(context);\r
+ return this;\r
+ }\r
+\r
+ @Override\r
+ public Expression decorate(ExpressionDecorator decorator) {\r
+ return decorator.decorate(this);\r
+ }\r
+\r
+ @Override\r
+ public void collectEffects(THashSet<Type> effects) {\r
+ // FIXME\r
+ effects.add(Types.READ_GRAPH);\r
+ }\r
+ \r
+ @Override\r
+ public void setLocationDeep(long loc) {\r
+ if(location == Locations.NO_LOCATION) {\r
+ location = loc;\r
+ parent.setLocationDeep(loc);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.setLocationDeep(loc);\r
+ }\r
+ }\r
+ \r
+ @Override\r
+ public void accept(ExpressionVisitor visitor) {\r
+ visitor.visit(this);\r
+ }\r
+\r
+ @Override\r
+ public void forVariables(VariableProcedure procedure) {\r
+ parent.forVariables(procedure);\r
+ for(FieldAccessor accessor : accessors)\r
+ accessor.forVariables(procedure);\r
+ }\r
+ \r
+ @Override\r
+ public Expression accept(ExpressionTransformer transformer) {\r
+ return transformer.transform(this);\r
+ }\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff