private List<Expression> parseExpressionList() {
List<Expression> expressions = new ArrayList<Expression>();
do {
Expression expression = parseExpression();
expressions.add(expression);
} while (myLexer.nextToken() == TokenType.COMMA);
myLexer.pushBack();
return expressions;
}
private StatementsNode parseStatements(boolean insideGroup) {
List<Statement> statements = new ArrayList<Statement>();
do {
Statement statement = parseStatement();
statements.add(statement);
TokenType type = myLexer.nextToken();
myLexer.pushBack();
if (type == TokenType.EOF || insideGroup && type == TokenType.RBRACE) {
break;
}
} while (true);
return new StatementsNode(statements);
}
private Statement parseFunctionDeclaration() {
tokenExpected(TokenType.IDENTIFIER);
String name = myLexer.getToken();
tokenExpected(TokenType.LPAREN);
List<String> parameters = new ArrayList<String>();
do {
tokenExpected(TokenType.IDENTIFIER);
parameters.add(myLexer.getToken());
} while (myLexer.nextToken() == TokenType.COMMA);
myLexer.pushBack();
tokenExpected(TokenType.RPAREN);
Statement body = parseStatement();
return new FunctionDeclaration(name, parameters, body);
}