Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/EEnforce.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/EEnforce.java
new file mode 100644 (file)
index 0000000..11bc4b6
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/EEnforce.java
@@ -0,0 +1,121 @@
+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.exceptions.InternalCompilerError;\r
+import org.simantics.scl.compiler.elaboration.contexts.ReplaceContext;\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.query.QExists;\r
+import org.simantics.scl.compiler.elaboration.query.Query;\r
+import org.simantics.scl.compiler.elaboration.query.compilation.EnforcingContext;\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 EEnforce extends SimplifiableExpression {\r
+    \r
+    Query query;\r
+    \r
+    public EEnforce(Query query) {\r
+        this.query = query;\r
+    }\r
+    \r
+    public Query getQuery() {\r
+        return query;\r
+    }\r
+\r
+    @Override\r
+    public void collectRefs(TObjectIntHashMap<Object> allRefs,\r
+            TIntHashSet refs) {\r
+        query.collectRefs(allRefs, refs);\r
+    }\r
+\r
+    @Override\r
+    public void collectVars(TObjectIntHashMap<Variable> allVars,\r
+            TIntHashSet vars) {\r
+        query.collectVars(allVars, vars);\r
+    }\r
+    \r
+    @Override\r
+    public void collectEffects(THashSet<Type> effects) {\r
+        throw new InternalCompilerError(location, getClass().getSimpleName() + " does not support collectEffects.");\r
+    }\r
+\r
+    @Override\r
+    protected void updateType() throws MatchException {\r
+        setType(Types.tupleConstructor(0));\r
+    }\r
+    \r
+    @Override\r
+    public Expression inferType(TypingContext context) {\r
+        query.checkType(context);\r
+        //context.declareEffect(location, query.getEffect(Query.W));\r
+        return compile(context);\r
+    }\r
+    \r
+    public Expression compile(TypingContext context) {\r
+        return query.generateEnforce(new EnforcingContext(context));\r
+    }\r
+\r
+    @Override\r
+    public void collectFreeVariables(THashSet<Variable> vars) {\r
+        query.collectFreeVariables(vars);\r
+    }\r
+\r
+    @Override\r
+    public Expression simplify(SimplificationContext context) {\r
+        /*query = query.simplify(context);\r
+        return query.generateEnforce(context);*/\r
+        throw new InternalCompilerError();\r
+    }\r
+\r
+    @Override\r
+    public Expression resolve(TranslationContext context) {\r
+        context.pushExistentialFrame();\r
+        query = query.resolve(context);\r
+        Variable[] variables = context.popExistentialFrame();\r
+        if(variables.length > 0)\r
+            query = new QExists(variables, query);\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 setLocationDeep(long loc) {\r
+        if(location == Locations.NO_LOCATION) {\r
+            location = loc;\r
+            query.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
+        query.forVariables(procedure);\r
+    }\r
+    \r
+    @Override\r
+    public Expression replace(ReplaceContext context) {\r
+        return new EEnforce(query.replace(context));\r
+    }\r
+    \r
+    @Override\r
+    public Expression accept(ExpressionTransformer transformer) {\r
+        return transformer.transform(this);\r
+    }\r
+\r
+}\r