Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/block/BindStatement.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/block/BindStatement.java
new file mode 100755 (executable)
index 0000000..00eb220
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/expressions/block/BindStatement.java
@@ -0,0 +1,54 @@
+package org.simantics.scl.compiler.elaboration.expressions.block;\r
+\r
+import org.simantics.scl.compiler.elaboration.contexts.EnvironmentalContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.ReplaceContext;\r
+import org.simantics.scl.compiler.elaboration.contexts.TranslationContext;\r
+import org.simantics.scl.compiler.elaboration.expressions.EBind;\r
+import org.simantics.scl.compiler.elaboration.expressions.Expression;\r
+import org.simantics.scl.compiler.errors.Locations;\r
+\r
+public class BindStatement extends Statement {\r
+    public Expression pattern;\r
+    public Expression value;\r
+    \r
+    public BindStatement(Expression pattern, Expression value) {\r
+        this.pattern = pattern;\r
+        this.value = value;\r
+    }\r
+\r
+    @Override\r
+    public Expression toExpression(EnvironmentalContext context, boolean monadic, Expression in) {\r
+        //if(!monadic)\r
+        //    context.getErrorLog().log(location, "Bind statements are allowed only in mdo-blocks.");\r
+        return new EBind(location, pattern, value, in);\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 resolvePattern(TranslationContext context) {\r
+        pattern = pattern.resolveAsPattern(context);\r
+    }\r
+    \r
+    @Override\r
+    public boolean mayBeRecursive() {\r
+        return false;\r
+    }\r
+    \r
+    @Override\r
+    public Statement replace(ReplaceContext context) {\r
+        return new BindStatement(pattern.replaceInPattern(context), value.replace(context));\r
+    }\r
+\r
+    @Override\r
+    public void accept(StatementVisitor visitor) {\r
+        visitor.visit(this);\r
+    }\r
+}\r