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Small optimization for passing string literals to JS

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This commit is contained in:
Alexey Andreev 2015-05-08 13:23:57 +04:00
parent 25310a5082
commit c743c8d3c1
1 changed files with 8 additions and 0 deletions
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8
teavm-jso/src/main/java/org/teavm/jso/plugin/JSNativeGenerator.java
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@ -18,6 +18,7 @@ package org.teavm.jso.plugin;
import java.io.IOException;
import org.teavm.codegen.SourceWriter;
import org.teavm.dependency.*;
import org.teavm.javascript.Renderer;
import org.teavm.javascript.ast.ConstantExpr;
import org.teavm.javascript.ast.Expr;
import org.teavm.javascript.ast.InvocationExpr;
@ -127,6 +128,13 @@ public class JSNativeGenerator implements Injector, DependencyPlugin, Generator
break;
case "wrap":
if (methodRef.getDescriptor().parameterType(0).isObject("java.lang.String")) {
if (context.getArgument(0) instanceof ConstantExpr) {
ConstantExpr constant = (ConstantExpr)context.getArgument(0);
if (constant.getValue() instanceof String) {
writer.append('"').append(Renderer.escapeString((String)constant.getValue())).append('"');
break;
}
}
writer.append("$rt_ustr(");
context.writeExpr(context.getArgument(0));
writer.append(")");