@Nullable
private static PsiBuilder.Marker parsePrimaryExpressionStart(final PsiBuilder builder) {
IElementType tokenType = builder.getTokenType();
if (LITERALS.contains(tokenType)) {
final PsiBuilder.Marker literal = builder.mark();
builder.advanceLexer();
literal.done(JavaElementType.LITERAL_EXPRESSION);
return literal;
}
if (tokenType == JavaTokenType.LPARENTH) {
final PsiBuilder.Marker parenth = builder.mark();
builder.advanceLexer();
final PsiBuilder.Marker inner = parse(builder);
if (inner == null) {
error(builder, JavaErrorMessages.message("expected.expression"));
}
if (!expect(builder, JavaTokenType.RPARENTH)) {
if (inner != null) {
error(builder, JavaErrorMessages.message("expected.rparen"));
}
}
parenth.done(JavaElementType.PARENTH_EXPRESSION);
return parenth;
}
if (tokenType == JavaTokenType.LBRACE) {
return parseArrayInitializer(builder);
}
PsiBuilder.Marker annotation = null;
final PsiBuilder.Marker beforeAnnotation = builder.mark();
if (tokenType == JavaTokenType.AT) {
annotation = DeclarationParser.parseAnnotations(builder);
tokenType = builder.getTokenType();
}
if (tokenType == JavaTokenType.IDENTIFIER) {
final PsiBuilder.Marker refExpr;
if (annotation != null) {
final PsiBuilder.Marker refParam = annotation.precede();
refParam.doneBefore(JavaElementType.REFERENCE_PARAMETER_LIST, annotation);
refExpr = refParam.precede();
} else {
refExpr = builder.mark();
builder.mark().done(JavaElementType.REFERENCE_PARAMETER_LIST);
}
builder.advanceLexer();
refExpr.done(JavaElementType.REFERENCE_EXPRESSION);
beforeAnnotation.drop();
return refExpr;
}
if (annotation != null) {
beforeAnnotation.rollbackTo();
tokenType = builder.getTokenType();
} else {
beforeAnnotation.drop();
}
PsiBuilder.Marker expr = null;
if (tokenType == JavaTokenType.LT) {
expr = builder.mark();
if (!ReferenceParser.parseReferenceParameterList(builder, false, false)) {
expr.rollbackTo();
return null;
}
tokenType = builder.getTokenType();
if (!CONSTRUCTOR_CALL.contains(tokenType)) {
expr.rollbackTo();
return null;
}
}
if (CONSTRUCTOR_CALL.contains(tokenType)) {
if (expr == null) {
expr = builder.mark();
builder.mark().done(JavaElementType.REFERENCE_PARAMETER_LIST);
}
builder.advanceLexer();
expr.done(
builder.getTokenType() == JavaTokenType.LPARENTH
? JavaElementType.REFERENCE_EXPRESSION
: tokenType == JavaTokenType.THIS_KEYWORD
? JavaElementType.THIS_EXPRESSION
: JavaElementType.SUPER_EXPRESSION);
return expr;
}
if (tokenType == JavaTokenType.NEW_KEYWORD) {
return parseNew(builder, null);
}
if (ElementType.PRIMITIVE_TYPE_BIT_SET.contains(tokenType)) {
return parseClassObjectAccess(builder);
}
return null;
}
