private ParameterSyntax ParseParameter()
{
SyntaxToken identifier = MatchToken(SyntaxKind.IdentifierToken);
TypeClauseSyntax type = ParseTypeClause();
return(new ParameterSyntax(identifier, type));
}
private StatementSyntax ParseVariableDeclaration()
{
SyntaxKind expected = Current.Kind == SyntaxKind.LetKeyword ? SyntaxKind.LetKeyword : SyntaxKind.VarKeyword;
SyntaxToken keyword = MatchToken(expected);
SyntaxToken identifier = MatchToken(SyntaxKind.IdentifierToken);
TypeClauseSyntax typeClause = ParseOptionalTypeClause();
SyntaxToken equals = MatchToken(SyntaxKind.EqualsToken);
ExpressionSyntax initializer = ParseExpression();
return(new VariableDeclarationSyntax(keyword, identifier, typeClause, equals, initializer));
}
private MemberSyntax ParseFunctionDeclaration()
{
SyntaxToken functionKeyword = MatchToken(SyntaxKind.FunctionKeyword);
SyntaxToken identifier = MatchToken(SyntaxKind.IdentifierToken);
SyntaxToken openParenthesisToken = MatchToken(SyntaxKind.OpenParenthesisToken);
SeparatedSyntaxList <ParameterSyntax> parameters = ParseParameterList();
SyntaxToken closeParenthesisToken = MatchToken(SyntaxKind.CloseParenthesisToken);
TypeClauseSyntax type = ParseOptionalTypeClause();
BlockStatementSyntax body = ParseBlockStatement();
return(new FunctionDeclarationSyntax(functionKeyword, identifier, openParenthesisToken, parameters, closeParenthesisToken, type, body));
}