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Improve minification of async code

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This commit is contained in:
konsoletyper 2015-03-09 11:29:49 +03:00
parent 6017bd6586
commit 97889bc217
3 changed files with 44 additions and 24 deletions
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57
teavm-core/src/main/java/org/teavm/javascript/Renderer.java
View File

@ -537,7 +537,7 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
args.add(variableName(i));
}
if (async) {
args.add("$return");
args.add(getReturnVariable());
}
for (int i = 0; i < args.size(); ++i) {
if (i > 0) {
@ -557,6 +557,18 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
writer.append(");").ws().append("}");
}
private String getPartVariable(int index) {
if (minifying) {
return "$p" + indexToId(index);
} else {
return "$part_" + index;
}
}
private String getReturnVariable() {
return minifying ? "$r" : "$return";
}
public void renderBody(MethodNode method, boolean inner) throws IOException {
blockIdMap.clear();
MethodReference ref = method.getReference();
@ -581,7 +593,7 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
if (startParam < ref.parameterCount() + 1) {
writer.append(',').ws();
}
writer.append("$return");
writer.append(getReturnVariable());
}
writer.append(")").ws().append("{").softNewLine().indent();
method.acceptVisitor(new MethodBodyRenderer());
@ -601,11 +613,11 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
writer.append(variableName(i));
writer.append(",").ws();
}
writer.append("$return)").ws().append("{").softNewLine().indent();
writer.append(getReturnVariable()).append(")").ws().append("{").softNewLine().indent();
writer.append("var $r;").softNewLine();
writer.append("var $x;").softNewLine();
writer.append("try").ws().append('{').indent().softNewLine();
writer.append("$r").ws().append("=").ws().appendMethodBody(ref).append('(');
writer.append("$x").ws().append("=").ws().appendMethodBody(ref).append('(');
for (int i = startParam; i <= ref.parameterCount(); ++i) {
if (i > startParam) {
writer.append(",").ws();
@ -615,9 +627,9 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
writer.append(");").softNewLine();
writer.outdent().append("}").ws().append("catch").ws().append("($e)").ws()
.append("{").indent().softNewLine();
writer.append("return $return($rt_asyncError($e));").softNewLine();
writer.append("return ").append(getReturnVariable()).append("($rt_asyncError($e));").softNewLine();
writer.outdent().append("}");
writer.append("$return($rt_asyncResult($r));").softNewLine();
writer.append(getReturnVariable()).append("($rt_asyncResult($x));").softNewLine();
writer.outdent().append("}");
if (inner) {
writer.append(';');
@ -720,16 +732,17 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
writer.append(";").softNewLine();
}
for (int i = 0; i < methodNode.getBody().size(); ++i) {
writer.append("var $part_").append(i).ws().append("=").ws().append("$rt_guardAsync(function(");
writer.append("var ").append(getPartVariable(i)).ws().append("=").ws()
.append("$rt_guardAsync(function(");
if (i > 0) {
writer.append("$restore");
}
writer.append(")").ws().append("{").indent().softNewLine();
AsyncMethodPart part = methodNode.getBody().get(i);
part.getStatement().acceptVisitor(Renderer.this);
writer.outdent().append("},").ws().append("$return);").softNewLine();
writer.outdent().append("},").ws().append(getReturnVariable()).append(");").softNewLine();
}
writer.append("return $part_0();").softNewLine();
writer.append("return ").append(getPartVariable(0)).append("();").softNewLine();
} catch (IOException e) {
throw new RenderingException("IO error occured", e);
}
@ -777,7 +790,7 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
@Override
public String getCompleteContinuation() {
return "$return";
return getReturnVariable();
}
@Override
@ -972,18 +985,22 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
private String mapBlockId(String id) {
String name = blockIdMap.get(id);
if (name == null) {
StringBuilder sb = new StringBuilder();
int index = blockIdMap.size();
do {
sb.append(variablePartNames.charAt(index % variablePartNames.length()));
index /= variablePartNames.length();
} while (index > 0);
name = "$b" + sb;
name = "$b" + indexToId(index);
blockIdMap.put(id, name);
}
return name;
}
private String indexToId(int index) {
StringBuilder sb = new StringBuilder();
do {
sb.append(variablePartNames.charAt(index % variablePartNames.length()));
index /= variablePartNames.length();
} while (index > 0);
return sb.toString();
}
@Override
public void visit(BlockStatement statement) {
try {
@ -1046,7 +1063,7 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
}
writer.append("return");
if (async) {
writer.append(" $return($rt_asyncResult(");
writer.append(' ').append(getReturnVariable()).append("($rt_asyncResult(");
}
if (statement.getResult() != null) {
if (!async) {
@ -1709,7 +1726,7 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
if (hasParams) {
writer.append(',').ws();
}
writer.append("$rt_continue($part_").append(expr.getAsyncTarget()).append(')');
writer.append("$rt_continue(").append(getPartVariable(expr.getAsyncTarget())).append(')');
}
writer.append(')');
exitPriority();
@ -2008,7 +2025,7 @@ public class Renderer implements ExprVisitor, StatementVisitor, RenderingContext
writer.append("return ").append(naming.getFullNameForAsync(monitorEnterRef)).append("(");
statement.getObjectRef().acceptVisitor(this);
writer.append(",").ws();
writer.append("$rt_continue($part_").append(statement.getAsyncTarget()).append(')');
writer.append("$rt_continue(").append(getPartVariable(statement.getAsyncTarget())).append(')');
writer.append(");").softNewLine();
} else {
MethodReference monitorEnterRef = new MethodReference(

9
teavm-platform/src/main/java/org/teavm/platform/plugin/AsyncMethodGenerator.java
View File

@ -41,11 +41,13 @@ public class AsyncMethodGenerator implements Generator, DependencyPlugin {
writer.append("var callback").ws().append("=").ws().append("function()").ws().append("{};").softNewLine();
writer.append("callback.").appendMethod(completeMethod).ws().append("=").ws().append("function(val)").ws()
.append("{").indent().softNewLine();
writer.append("return $return($rt_asyncResult(val));").softNewLine();
writer.append("return ").append(context.getCompleteContinuation()).append("($rt_asyncResult(val));")
.softNewLine();
writer.outdent().append("};").softNewLine();
writer.append("callback.").appendMethod(errorMethod).ws().append("=").ws().append("function(e)").ws()
.append("{").indent().softNewLine();
writer.append("return $return($rt_asyncError(e));").softNewLine();
writer.append("return ").append(context.getCompleteContinuation()).append("($rt_asyncError(e));")
.softNewLine();
writer.outdent().append("};").softNewLine();
writer.append("try").ws().append("{").indent().softNewLine();
writer.append("return ").appendMethodBody(asyncRef).append('(');
@ -58,7 +60,8 @@ public class AsyncMethodGenerator implements Generator, DependencyPlugin {
}
writer.append("callback);").softNewLine();
writer.outdent().append("}").ws().append("catch($e)").ws().append("{").indent().softNewLine();
writer.append("return $return($rt_asyncError($e));").softNewLine();
writer.append("return ").append(context.getCompleteContinuation()).append("($rt_asyncError($e));")
.softNewLine();
writer.outdent().append("}").softNewLine();
}

2
teavm-platform/src/main/java/org/teavm/platform/plugin/PlatformGenerator.java
View File

@ -156,7 +156,7 @@ public class PlatformGenerator implements Generator, Injector, DependencyPlugin
writer.append("return ").append(selfName).append("(").append(context.getParameterName(1));
if (context.isAsync()) {
writer.append(',').ws().append("$return");
writer.append(',').ws().append(context.getCompleteContinuation());
}
writer.append(");").softNewLine();
}