Skip to main content
summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/types/builtin/StringType.java')
-rw-r--r--plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/types/builtin/StringType.java25
1 files changed, 25 insertions, 0 deletions
diff --git a/plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/types/builtin/StringType.java b/plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/types/builtin/StringType.java
new file mode 100644
index 00000000..88128cb4
--- /dev/null
+++ b/plugins/org.eclipse.xtend.backend/src/org/eclipse/xtend/backend/types/builtin/StringType.java
@@ -0,0 +1,25 @@
+package org.eclipse.xtend.backend.types.builtin;
+
+import org.eclipse.xtend.backend.common.BackendType;
+import org.eclipse.xtend.backend.types.AbstractType;
+
+
+/**
+ * The canonical, internal representation of a string object is "anything that implements CharSequence", i.e.
+ * a function that accepts a parameter of type string must accept any CharSequence. This is done to
+ * enable internal optimizations like lazy concatenation and streaming.<p>
+ *
+ * This has the consequence that functions may need to convert a given CharSequence to whatever more specific
+ * string representation they need internally.
+ *
+ * @author Arno Haase (http://www.haase-consulting.com)
+ */
+public final class StringType extends AbstractType {
+ public static final StringType INSTANCE = new StringType();
+
+ private StringType () {super ("String"); }
+
+ public boolean isAssignableFrom (BackendType other) {
+ return other == this || other == VoidType.INSTANCE;
+ }
+}

Back to the top