--- /dev/null
+package org.simantics.scl.compiler.elaboration.expressions.list;\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.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.Case;\r
+import org.simantics.scl.compiler.elaboration.expressions.EVariable;\r
+import org.simantics.scl.compiler.elaboration.expressions.Expression;\r
+import org.simantics.scl.compiler.elaboration.expressions.Variable;\r
+import org.simantics.scl.compiler.elaboration.expressions.VariableProcedure;\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
+\r
+public class ListAssignment extends ListQualifier {\r
+ public Expression pattern;\r
+ public Expression value;\r
+ \r
+ public ListAssignment(Expression pattern, Expression value) {\r
+ this.pattern = pattern;\r
+ this.value = value;\r
+ }\r
+ \r
+ @Override\r
+ public void checkType(TypingContext context) {\r
+ value = value.inferType(context);\r
+ pattern.checkTypeAsPattern(context, value.getType());\r
+ }\r
+\r
+ @Override\r
+ public void collectRefs(TObjectIntHashMap<Object> allRefs,\r
+ TIntHashSet refs) {\r
+ value.collectRefs(allRefs, refs);\r
+ }\r
+\r
+ @Override\r
+ public void collectVars(TObjectIntHashMap<Variable> allVars,\r
+ TIntHashSet vars) {\r
+ value.collectVars(allVars, vars);\r
+ }\r
+\r
+ @Override\r
+ public void collectFreeVariables(THashSet<Variable> vars) {\r
+ value.collectFreeVariables(vars);\r
+ pattern.collectFreeVariables(vars);\r
+ }\r
+\r
+ @Override\r
+ public CompiledQualifier compile(SimplificationContext context) {\r
+ if(pattern instanceof EVariable)\r
+ return new CompiledQualifier(context.singletonList(value), pattern);\r
+ else {\r
+ THashSet<Variable> variables = pattern.getFreeVariables();\r
+ Variable[] variableArray = variables.toArray(new Variable[variables.size()]);\r
+ Expression[] variableExps = new Expression[variableArray.length];\r
+ for(int i=0;i<variableArray.length;++i)\r
+ variableExps[i] = new EVariable(variableArray[i]);\r
+ Expression newPattern = context.tuple(variableExps);\r
+ \r
+ EVariable blank = context.blank();\r
+ blank.getVariable().setType(pattern.getType());\r
+ \r
+ return new CompiledQualifier(\r
+ context.match(value, \r
+ new Case(pattern, context.singletonList(newPattern.copy())),\r
+ new Case(blank, context.emptyList(newPattern.getType()))\r
+ ),\r
+ newPattern\r
+ );\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void resolve(TranslationContext context) {\r
+ value = value.resolve(context);\r
+ pattern = pattern.resolveAsPattern(context);\r
+ }\r
+\r
+ @Override\r
+ public void decorate(ExpressionDecorator decorator) {\r
+ value = value.decorate(decorator);\r
+ pattern = pattern.decorate(decorator);\r
+ }\r
+\r
+ @Override\r
+ public void collectEffects(THashSet<Type> effects) {\r
+ pattern.collectEffects(effects);\r
+ value.collectEffects(effects);\r
+ }\r
+ \r
+ @Override\r
+ public void setLocationDeep(long loc) {\r
+ if(location == Locations.NO_LOCATION) {\r
+ location = loc;\r
+ pattern.setLocationDeep(loc);\r
+ value.setLocationDeep(loc);\r
+ }\r
+ }\r
+\r
+ @Override\r
+ public void accept(ListQualifierVisitor visitor) {\r
+ visitor.visit(this);\r
+ }\r
+\r
+ @Override\r
+ public void forVariables(VariableProcedure procedure) {\r
+ value.forVariables(procedure);\r
+ }\r
+\r
+ @Override\r
+ public ListQualifier accept(ListQualifierTransformer transformer) {\r
+ return transformer.transform(this);\r
+ }\r
+}\r