Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/ETransformation.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/ETransformation.java
new file mode 100644 (file)
index 0000000..63fee96
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/ETransformation.java
@@ -0,0 +1,131 @@
+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 java.util.ArrayList;\r
+import java.util.Collections;\r
+import java.util.Comparator;\r
+\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.Query;\r
+import org.simantics.scl.compiler.elaboration.rules.TransformationRule;\r
+import org.simantics.scl.compiler.errors.Locations;\r
+import org.simantics.scl.compiler.internal.elaboration.transformations.TransformationBuilder;\r
+import org.simantics.scl.compiler.internal.elaboration.utils.ExpressionDecorator;\r
+import org.simantics.scl.compiler.top.SCLCompilerConfiguration;\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 ETransformation extends SimplifiableExpression {\r
+    public static final Object TRANSFORMATION_RULES_TYPECHECKED = new Object();\r
+    \r
+    public final String name;\r
+    public Query seed;\r
+    \r
+    public ETransformation(String name, Query seed) {\r
+        this.name = name;\r
+        this.seed = seed;\r
+    }\r
+\r
+    @Override\r
+    public void collectRefs(TObjectIntHashMap<Object> allRefs,\r
+            TIntHashSet refs) {\r
+        {\r
+            int ref = allRefs.get(TRANSFORMATION_RULES_TYPECHECKED);\r
+            if(ref >= 0)\r
+                refs.add(ref);\r
+        }\r
+        seed.collectRefs(allRefs, refs);\r
+    }\r
+\r
+    @Override\r
+    public void collectVars(TObjectIntHashMap<Variable> allVars,\r
+            TIntHashSet vars) {\r
+        seed.collectVars(allVars, vars);\r
+    }\r
+\r
+    @Override\r
+    protected void updateType() throws MatchException {\r
+        setType(Types.UNIT);\r
+    }\r
+\r
+    @Override\r
+    public void collectFreeVariables(THashSet<Variable> vars) {\r
+        seed.collectFreeVariables(vars);\r
+    }\r
+    \r
+    @Override\r
+    public Expression inferType(TypingContext context) {\r
+        context.declareEffect(location, Types.PROC);\r
+        seed.checkType(context);\r
+        return compile(context);\r
+    }\r
+\r
+    private Expression compile(TypingContext context) {\r
+        ArrayList<TransformationRule> rules = new ArrayList<TransformationRule>(); \r
+        context.getEnvironment().collectRules(rules);\r
+        Collections.sort(rules, new Comparator<TransformationRule>() {\r
+            @Override\r
+            public int compare(TransformationRule o1, TransformationRule o2) {\r
+                return Integer.compare(Locations.beginOf(o1.location), Locations.beginOf(o2.location));\r
+            }\r
+        });\r
+       \r
+        // Translation\r
+        TransformationBuilder tb = new TransformationBuilder(context.getErrorLog(), context);\r
+        tb.handleSeed(seed);\r
+        for(TransformationRule rule : rules)\r
+            if(!rule.isAbstract)\r
+                tb.handleRule(rule);\r
+        Expression expression = tb.compileRules();\r
+        \r
+        if(SCLCompilerConfiguration.SHOW_COMPILED_RULES)\r
+            System.out.println(expression);\r
+        return expression;\r
+    }\r
+\r
+    @Override\r
+    public Expression resolve(TranslationContext context) {\r
+        seed = seed.resolve(context);\r
+        return this;\r
+    }\r
+\r
+    @Override\r
+    public void setLocationDeep(long loc) {\r
+        if(location == Locations.NO_LOCATION) {\r
+            location = loc;\r
+            seed.setLocationDeep(loc);\r
+        }\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
+        effects.add(Types.PROC);\r
+        //seed.collectEffects(Query.RW, effects); // FIXME\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
+        seed.forVariables(procedure);\r
+    }\r
+    \r
+    @Override\r
+    public Expression accept(ExpressionTransformer transformer) {\r
+        return transformer.transform(this);\r
+    }\r
+\r
+}\r