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supports also constructor replacement with a Java method

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This commit is contained in:
Volker Berlin 2019-11-17 17:28:31 +01:00
parent ce1d3ddb38
commit 185a0515c7
1 changed files with 20 additions and 7 deletions
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27
src/de/inetsoftware/jwebassembly/module/WasmCodeBuilder.java
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@ -414,9 +414,25 @@ public abstract class WasmCodeBuilder {
WasmCallInstruction instruction = new WasmCallInstruction( name, javaCodePos, lineNumber, types ); WasmCallInstruction instruction = new WasmCallInstruction( name, javaCodePos, lineNumber, types );
if( "<init>".equals( name.methodName ) ) { if( "<init>".equals( name.methodName ) ) {
// check if there a factory for the constructor in JavaScript then we need to do some more complex patching
Function<String, Object> importAnannotation = functions.getImportAnannotation( name ); Function<String, Object> importAnannotation = functions.getImportAnannotation( name );
if( importAnannotation != null ) { FunctionName factoryName = null;
// if there a JavaScript replacement for a constructor we need also replace the create instance instruction
if( importAnannotation != null ) { // JavaScript replacement for a constructor via import
// The new signature need a return value. The <init> of Java has ever a void return value
String signature = name.signature;
signature = signature.substring( 0, signature.length() - 1 ) + "Ljava/lang/Object;";
factoryName = new ImportSyntheticFunctionName( "String", "init", signature, importAnannotation );
} else {
MethodInfo replace = functions.replace( name, null );
if( replace != null && !"<init>".equals( replace.getName() ) ) {
// the constructor was replaced with a factory method. Typical this method called then a JavaScript replacement
factoryName = new FunctionName( replace );
}
}
if( factoryName != null ) {
// the constructor was replaced we need also replace the create instance instruction
List<WasmInstruction> instructions = this.instructions; List<WasmInstruction> instructions = this.instructions;
for( int i = instructions.size() - 1; i >= 0; i-- ) { for( int i = instructions.size() - 1; i >= 0; i-- ) {
WasmInstruction instr = instructions.get( i ); WasmInstruction instr = instructions.get( i );
@ -432,11 +448,8 @@ public abstract class WasmCodeBuilder {
} }
} }
} }
// The new signature need a return value. The <init> of Java has ever a void return value // the new instruction
String signature = name.signature; instruction = new WasmCallInstruction( factoryName, javaCodePos, lineNumber, types );
signature = signature.substring( 0, signature.length() - 1 ) + "Ljava/lang/Object;";
FunctionName name2 = new ImportSyntheticFunctionName( "String", "init", signature, importAnannotation );
instruction = new WasmCallInstruction( name2, javaCodePos, lineNumber, types );
} }
} }