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try to parse JS files without using the supported extensions

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erik-krogh
2022-09-19 12:20:20 +02:00
parent a16233aa7d
commit ccae0933c7
6 changed files with 85 additions and 72 deletions
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27
javascript/extractor/src/com/semmle/js/parser/JcornWrapper.java
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@@ -28,20 +28,29 @@ public class JcornWrapper {
.onToken(tokens)
.preserveParens(true)
.allowReturnOutsideFunction(true);
if (config.isMozExtensions()) options.mozExtensions(true);
if (config.isJscript()) options.jscript(true);
if (config.isJsx()) options = new JSXOptions(options);
if (config.isEsnext()) options.esnext(true);
if (config.isV8Extensions()) options.v8Extensions(true);
if (config.isE4X()) options.e4x(true);
Program program = null;
List<ParseError> errors = new ArrayList<>();
try {
if (config.isTolerateParseErrors())
options.onRecoverableError((err) -> errors.add(mkParseError(err)));
program = sourceType.createParser(options, source, 0).parse();
try {
// First try to parse as a regular JavaScript program.
program = sourceType.createParser(options, source, 0).parse();
} catch (SyntaxError e) {
// If that fails, try to enable all the extensions that we support.
if (config.isTolerateParseErrors())
options.onRecoverableError((err) -> errors.add(mkParseError(err)));
comments.clear();
tokens.clear();
if (config.isMozExtensions()) options.mozExtensions(true);
if (config.isJscript()) options.jscript(true);
if (config.isJsx()) options = new JSXOptions(options);
if (config.isV8Extensions()) options.v8Extensions(true);
if (config.isE4X()) options.e4x(true);
if (config.isEsnext()) options.allowFlowTypes(true); // allow the flow-parser to parse types.
program = sourceType.createParser(options, source, 0).parse();
}
} catch (SyntaxError e) {
errors.add(mkParseError(e));
}