Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/EEquations.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/EEquations.java
new file mode 100644 (file)
index 0000000..41cea63
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/EEquations.java
@@ -0,0 +1,124 @@
+package org.simantics.scl.compiler.elaboration.expressions;\r
+\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.equation.Equation;\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
+import gnu.trove.map.hash.TObjectIntHashMap;\r
+import gnu.trove.set.hash.THashSet;\r
+import gnu.trove.set.hash.TIntHashSet;\r
+\r
+public class EEquations extends SimplifiableExpression {\r
+\r
+    public Equation[] equations;\r
+    public Type effect = Types.NO_EFFECTS;\r
+    \r
+    public EEquations(Equation[] equations) {\r
+        this.equations = equations;\r
+    }\r
+    \r
+    public EEquations(long location, Equation[] equations) {\r
+        this(equations);\r
+        this.location = location;\r
+    }\r
+\r
+    @Override\r
+    public Expression resolve(TranslationContext context) {\r
+        for(Equation equation : equations)\r
+            equation.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
+            for(Equation equation : equations)\r
+                equation.setLocationDeep(loc);\r
+        }\r
+    }\r
+\r
+    @Override\r
+    public Expression accept(ExpressionTransformer transformer) {\r
+        return transformer.transform(this);\r
+    }\r
+\r
+    @Override\r
+    public void collectRefs(TObjectIntHashMap<Object> allRefs, TIntHashSet refs) {\r
+        for(Equation equation : equations)\r
+            equation.collectRefs(allRefs, refs);        \r
+    }\r
+\r
+    @Override\r
+    public void collectVars(TObjectIntHashMap<Variable> allVars, TIntHashSet vars) {\r
+        for(Equation equation : equations)\r
+            equation.collectVars(allVars, vars);\r
+    }\r
+\r
+    @Override\r
+    public void forVariables(VariableProcedure procedure) {\r
+        for(Equation equation : equations)\r
+            equation.forVariables(procedure);\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
+        for(Equation equation : equations)\r
+            equation.collectFreeVariables(vars);\r
+    }\r
+\r
+    @Override\r
+    public Expression decorate(ExpressionDecorator decorator) {\r
+        if(decorator.decorateSubstructure(this)) {\r
+            for(Equation equation : equations)\r
+                 equation.decorate(decorator);\r
+        }\r
+        return this;\r
+    }\r
+\r
+    @Override\r
+    public void collectEffects(THashSet<Type> effects) {\r
+        for(Equation equation : equations)\r
+            equation.collectEffects(effects);\r
+    }\r
+\r
+    @Override\r
+    public void accept(ExpressionVisitor visitor) {\r
+        visitor.visit(this);\r
+    }\r
+    \r
+    @Override\r
+    public Expression inferType(TypingContext context) {\r
+        context.declareEffect(this.location, effect);\r
+        for(Equation equation : equations)\r
+            equation.checkType(context);\r
+        return this;\r
+    }\r
+    \r
+    @Override\r
+    public Expression simplify(SimplificationContext context) {\r
+        context.getErrorLog().log(location, "Equations should be transformed into other expressions before simplification phase.");\r
+        return Expressions.tuple();\r
+    }\r
+    \r
+    @Override\r
+    public Expression replace(ReplaceContext context) {\r
+        Equation[] newEquations = new Equation[equations.length];\r
+        for(int i=0;i<equations.length;++i)\r
+            newEquations[i] = equations[i].replace(context);\r
+        return new EEquations(location, newEquations);\r
+    }\r
+\r
+}\r