X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Fconstants%2FStringInterpolation.java;fp=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Fconstants%2FStringInterpolation.java;h=55bba560472aaced6f5b74925dd953d436c8cb29;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/StringInterpolation.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/StringInterpolation.java
new file mode 100644
index 000000000..55bba5604
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/StringInterpolation.java
@@ -0,0 +1,64 @@
+package org.simantics.scl.compiler.constants;
+
+import org.cojen.classfile.TypeDesc;
+import org.simantics.scl.compiler.internal.codegen.references.Val;
+import org.simantics.scl.compiler.internal.codegen.utils.Constants;
+import org.simantics.scl.compiler.internal.codegen.utils.MethodBuilder;
+import org.simantics.scl.compiler.types.TVar;
+import org.simantics.scl.compiler.types.Type;
+import org.simantics.scl.compiler.types.Types;
+
+public class StringInterpolation extends FunctionValue {
+
+    public static final TypeDesc STRING_BUILDER = TypeDesc.forClass(StringBuilder.class);
+    
+    private final String[] textParts;
+    
+    public StringInterpolation(Type[] parameterTypes, String[] textParts) {
+        super(TVar.EMPTY_ARRAY, Types.NO_EFFECTS, Types.STRING, parameterTypes);
+        this.textParts = textParts;
+    }
+    
+    public StringInterpolation(String[] textParts) {
+        this(stringTypeArray(textParts.length-1), textParts);
+    }
+
+    private static Type[] stringTypeArray(int length) {
+        Type[] result = new Type[length];
+        for(int i=0;i<length;++i)
+            result[i] = Types.STRING;
+        return result;
+    }
+
+    @Override
+    public Type applyExact(MethodBuilder mb, Val[] parameters) {
+        mb.newObject(STRING_BUILDER);
+        mb.dup();
+        mb.invokeConstructor(STRING_BUILDER, Constants.EMPTY_TYPEDESC_ARRAY);
+        
+        for(int i=0;i<parameters.length;++i) {
+            String textPart = textParts[i]; 
+            if(!textPart.isEmpty()) {
+                mb.loadConstant(textPart);
+                mb.invokeVirtual(STRING_BUILDER, "append", STRING_BUILDER, new TypeDesc[] {TypeDesc.STRING});
+            }
+            
+            mb.push(parameters[i], parameterTypes[i]);
+            mb.invokeVirtual(STRING_BUILDER, "append", STRING_BUILDER,
+                    new TypeDesc[] {mb.getJavaTypeTranslator().toTypeDesc(parameterTypes[i])});
+        }
+        
+        {
+            String textPart = textParts[parameters.length]; 
+            if(!textPart.isEmpty()) {
+                mb.loadConstant(textPart);
+                mb.invokeVirtual(STRING_BUILDER, "append", STRING_BUILDER, new TypeDesc[] {TypeDesc.STRING});
+            }
+        }
+        
+        mb.invokeVirtual(STRING_BUILDER, "toString", TypeDesc.STRING, Constants.EMPTY_TYPEDESC_ARRAY);
+        
+        return Types.STRING;
+    }
+
+}