/*
* propertyDelegate
* : "by" expression
* ;
*/
private void parsePropertyDelegate() {
assert _at(BY_KEYWORD);
PsiBuilder.Marker delegate = mark();
advance(); // BY_KEYWORD
myExpressionParsing.parseExpression();
delegate.done(PROPERTY_DELEGATE);
}
/*
* functionParameterRest
* : parameter ("=" element)?
* ;
*/
private boolean parseFunctionParameterRest() {
boolean noErrors = true;
// Recovery for the case 'fun foo(Array<String>) {}'
if (at(IDENTIFIER) && lookahead(1) == LT) {
error("Parameter name expected");
parseTypeRef();
noErrors = false;
} else {
expect(IDENTIFIER, "Parameter name expected", PARAMETER_NAME_RECOVERY_SET);
if (at(COLON)) {
advance(); // COLON
parseTypeRef();
} else {
errorWithRecovery("Parameters must have type annotation", PARAMETER_NAME_RECOVERY_SET);
noErrors = false;
}
}
if (at(EQ)) {
advance(); // EQ
myExpressionParsing.parseExpression();
}
return noErrors;
}
void parseExpressionCodeFragment() {
PsiBuilder.Marker marker = mark();
myExpressionParsing.parseExpression();
while (!eof()) {
error("unexpected symbol");
advance();
}
marker.done(EXPRESSION_CODE_FRAGMENT);
}
/*
* functionBody
* : block
* : "=" element
* ;
*/
private void parseFunctionBody() {
if (at(LBRACE)) {
parseBlock();
} else if (at(EQ)) {
advance(); // EQ
myExpressionParsing.parseExpression();
consumeIf(SEMICOLON);
} else {
errorAndAdvance("Expecting function body");
}
}
public IElementType parseProperty(boolean local) {
if (at(VAL_KEYWORD) || at(VAR_KEYWORD)) {
advance(); // VAL_KEYWORD or VAR_KEYWORD
} else {
errorAndAdvance("Expecting 'val' or 'var'");
}
boolean typeParametersDeclared =
at(LT) && parseTypeParameterList(TokenSet.create(IDENTIFIER, EQ, COLON, SEMICOLON));
TokenSet propertyNameFollow =
TokenSet.create(
COLON,
EQ,
LBRACE,
RBRACE,
SEMICOLON,
VAL_KEYWORD,
VAR_KEYWORD,
FUN_KEYWORD,
CLASS_KEYWORD);
myBuilder.disableJoiningComplexTokens();
// TODO: extract constant
int lastDot =
matchTokenStreamPredicate(
new LastBefore(
new AtSet(DOT, SAFE_ACCESS),
new AbstractTokenStreamPredicate() {
@Override
public boolean matching(boolean topLevel) {
if (topLevel && (at(EQ) || at(COLON))) return true;
if (topLevel && at(IDENTIFIER)) {
IElementType lookahead = lookahead(1);
return lookahead != LT
&& lookahead != DOT
&& lookahead != SAFE_ACCESS
&& lookahead != QUEST;
}
return false;
}
}));
PsiBuilder.Marker receiver = mark();
parseReceiverType("property", propertyNameFollow, lastDot);
boolean multiDeclaration = at(LPAR);
boolean receiverTypeDeclared = lastDot != -1;
errorIf(
receiver,
multiDeclaration && receiverTypeDeclared,
"Receiver type is not allowed on a multi-declaration");
if (multiDeclaration) {
PsiBuilder.Marker multiDecl = mark();
parseMultiDeclarationName(propertyNameFollow);
errorIf(multiDecl, !local, "Multi-declarations are only allowed for local variables/values");
} else {
parseFunctionOrPropertyName(receiverTypeDeclared, "property", propertyNameFollow);
}
myBuilder.restoreJoiningComplexTokensState();
if (at(COLON)) {
PsiBuilder.Marker type = mark();
advance(); // COLON
if (!parseIdeTemplate()) {
parseTypeRef();
}
errorIf(type, multiDeclaration, "Type annotations are not allowed on multi-declarations");
}
parseTypeConstraintsGuarded(typeParametersDeclared);
if (local) {
if (at(BY_KEYWORD)) {
parsePropertyDelegate();
} else if (at(EQ)) {
advance(); // EQ
myExpressionParsing.parseExpression();
// "val a = 1; b" must not be an infix call of b on "val ...;"
}
} else {
if (at(BY_KEYWORD)) {
parsePropertyDelegate();
consumeIf(SEMICOLON);
} else if (at(EQ)) {
advance(); // EQ
myExpressionParsing.parseExpression();
consumeIf(SEMICOLON);
}
if (parsePropertyGetterOrSetter()) {
parsePropertyGetterOrSetter();
}
if (!atSet(EOL_OR_SEMICOLON, RBRACE)) {
if (getLastToken() != SEMICOLON) {
errorUntil("Property getter or setter expected", TokenSet.create(EOL_OR_SEMICOLON));
}
} else {
consumeIf(SEMICOLON);
}
}
return multiDeclaration ? MULTI_VARIABLE_DECLARATION : PROPERTY;
}