Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / elaboration / expressions / list / ListAssignment.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/list/ListAssignment.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/list/ListAssignment.java
new file mode 100755 (executable)
index 0000000..5c82a5a
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/list/ListAssignment.java
@@ -0,0 +1,118 @@
+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