package com.oracle.truffle.js.parser;
import com.oracle.js.parser.ir.FunctionNode;
import com.oracle.js.parser.ir.LexicalContext;
import com.oracle.js.parser.ir.Scope;
import com.oracle.truffle.api.source.Source;
import com.oracle.truffle.js.lang.JavaScriptLanguage;
import com.oracle.truffle.js.nodes.NodeFactory;
import com.oracle.truffle.js.nodes.ScriptNode;
import com.oracle.truffle.js.nodes.function.FunctionRootNode;
import com.oracle.truffle.js.nodes.function.JSFunctionExpressionNode;
import com.oracle.truffle.js.parser.env.Environment;
import com.oracle.truffle.js.parser.env.EvalEnvironment;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.objects.JSModuleLoader;
import com.oracle.truffle.js.runtime.objects.JSModuleRecord;
public final class JavaScriptTranslator extends GraalJSTranslator {
private JavaScriptTranslator(LexicalContext lc, NodeFactory factory, JSContext context, Source source, String[] argumentNames, int prologLength, Environment environment, boolean isParentStrict) {
super(lc, factory, context, source, argumentNames, prologLength, environment, isParentStrict);
}
private JavaScriptTranslator(NodeFactory factory, JSContext context, Source source, int prologLength, Environment environment, boolean isParentStrict) {
this(new LexicalContext(), factory, context, source, null, prologLength, environment, isParentStrict);
}
public static ScriptNode translateScript(NodeFactory factory, JSContext context, Source source, boolean isParentStrict, String prologue, String epilogue) {
return translateScript(factory, context, source, isParentStrict, prologue, epilogue, null);
}
public static ScriptNode translateScript(NodeFactory factory, JSContext context, Source source, boolean isParentStrict, String prologue,
String epilogue, String[] argumentNames) {
return translateScript(factory, context, null, source, isParentStrict, false, false, null, prologue, epilogue, argumentNames);
}
public static ScriptNode translateEvalScript(NodeFactory factory, JSContext context, Source source, boolean isParentStrict, DirectEvalContext directEval) {
Environment parentEnv = directEval == null ? null : directEval.env;
EvalEnvironment env = new EvalEnvironment(parentEnv, factory, context, directEval != null);
boolean evalInFunction = parentEnv != null && (parentEnv.function() == null || !parentEnv.function().isGlobal());
return translateScript(factory, context, env, source, isParentStrict, true, evalInFunction, directEval, "", "", null);
}
public static ScriptNode translateInlineScript(NodeFactory factory, JSContext context, Environment env, Source source, boolean isParentStrict) {
boolean evalInFunction = env.getParent() != null;
return translateScript(factory, context, env, source, isParentStrict, true, evalInFunction, null, "", "", null);
}
private static ScriptNode translateScript(NodeFactory nodeFactory, JSContext context, Environment env, Source source, boolean isParentStrict,
boolean isEval, boolean evalInFunction, DirectEvalContext directEval, String prologue, String epilogue, String[] argumentNames) {
Scope parentScope = directEval == null ? null : directEval.scope;
FunctionNode parserFunctionNode = GraalJSParserHelper.parseScript(context, source, context.getParserOptions().putStrict(isParentStrict), isEval, evalInFunction, parentScope, prologue,
epilogue, argumentNames);
Source src = applyExplicitSourceURL(source, parserFunctionNode);
LexicalContext lc = new LexicalContext();
if (directEval != null && directEval.enclosingClass != null) {
lc.push(directEval.enclosingClass);
}
return new JavaScriptTranslator(lc, nodeFactory, context, src, argumentNames, prologue.length(), env, isParentStrict).translateScript(parserFunctionNode);
}
private static Source applyExplicitSourceURL(Source source, FunctionNode parserFunctionNode) {
String explicitURL = parserFunctionNode.getSource().getExplicitURL();
if (explicitURL != null) {
return Source.newBuilder(source).name(explicitURL).internal(source.isInternal() || explicitURL.startsWith(JavaScriptLanguage.INTERNAL_SOURCE_URL_PREFIX)).build();
}
return source;
}
public static ScriptNode translateFunction(NodeFactory factory, JSContext context, Environment env, Source source, boolean isParentStrict,
com.oracle.js.parser.ir.FunctionNode rootNode) {
return translateFunction(factory, context, env, source, 0, isParentStrict, rootNode);
}
public static ScriptNode translateFunction(NodeFactory factory, JSContext context, Environment env, Source source, int prologLength, boolean isParentStrict,
com.oracle.js.parser.ir.FunctionNode rootNode) {
return new JavaScriptTranslator(factory, context, source, prologLength, env, isParentStrict).translateScript(rootNode);
}
public static JSModuleRecord translateModule(NodeFactory factory, JSContext context, Source source, JSModuleLoader moduleLoader) {
FunctionNode parsed = GraalJSParserHelper.parseModule(context, source, context.getParserOptions().putStrict(true));
JavaScriptTranslator translator = new JavaScriptTranslator(factory, context, source, 0, null, true);
FunctionRootNode functionRoot = translator.translateModule(parsed);
JSModuleRecord moduleRecord = new JSModuleRecord(parsed.getModule(), context, moduleLoader, source);
moduleRecord.setFunctionData(functionRoot.getFunctionData());
moduleRecord.setFrameDescriptor(functionRoot.getFrameDescriptor());
if (functionRoot.getFunctionData().isAsync()) {
moduleRecord.setTopLevelAsync();
}
return moduleRecord;
}
private FunctionRootNode translateModule(com.oracle.js.parser.ir.FunctionNode functionNode) {
if (!functionNode.isModule()) {
throw new IllegalArgumentException("root function node is not a module");
}
JSFunctionExpressionNode functionExpression = (JSFunctionExpressionNode) transformFunction(functionNode);
return functionExpression.getFunctionNode();
}
@Override
protected GraalJSTranslator newTranslator(Environment env, LexicalContext savedLC) {
return new JavaScriptTranslator(savedLC.copy(), factory, context, source, argumentNames, prologLength, env, false);
}
}