nw::script::NssParser

struct NssParser

Public Functions

explicit NssParser(StringView view, Context *ctx, Nss *parent = nullptr)

NssToken advance()

Advances the token stream.

bool check(std::initializer_list<NssTokenType> types) const

Checks if next token matches a particular type.

Note

Does not advance the token stream

Parameters:

types – An initializer list of token types

Returns:

True if there is a match

bool check_is_type() const

Checks if next token matches a particular type.

Note

Does not advance the token stream

Returns:

True if there is a match

NssToken consume(NssTokenType type, StringView error)

Consumes a token.

Parameters:

• type – Type of token to consume

• error – Error message if token type is not matched

Returns:

Matched token

void diagnostic(StringView msg, NssToken token, bool is_warning = false)

Report diagnostic

Parameters:

msg – Message to report

bool is_end() const

Checks if at end of token stream.

bool match(std::initializer_list<NssTokenType> types)

Checks if next token matches a particular type.

Note

Advances the token stream

Parameters:

types – An initializer list of token types

Returns:

True if there is a match

void lex()

Lexes the file.

NssToken lookahead(size_t index) const

Looks ahead in the token stream

Parameters:

index – Index to look ahead to, from current token

NssToken peek() const

Next token in the token stream.

NssToken previous()

Previous token in the token stream.

void synchronize(bool allow_rbrace = false)

Advances token stream after an error.

Expression *parse_expr()

Expression *parse_expr_assign()

Expression *parse_expr_conditional()

Expression *parse_expr_or()

Expression *parse_expr_and()

Expression *parse_expr_bitwise()

Expression *parse_expr_equality()

Expression *parse_expr_relational()

Expression *parse_expr_shift()

Expression *parse_expr_additive()

Expression *parse_expr_multiplicative()

Expression *parse_expr_unary()

Expression *parse_expr_postfix()

Expression *parse_expr_primary()

Expression *parse_expr_group()

Statement *parse_stmt()

BlockStatement *parse_stmt_block()

DoStatement *parse_stmt_do()

ExprStatement *parse_stmt_expr()

IfStatement *parse_stmt_if()

ForStatement *parse_stmt_for()

LabelStatement *parse_stmt_label()

JumpStatement *parse_stmt_jump()

SwitchStatement *parse_stmt_switch()

WhileStatement *parse_stmt_while()

Type parse_type()

Statement *parse_decl()

StructDecl *parse_decl_struct()

Declaration *parse_decl_function_def()

FunctionDecl *parse_decl_function()

VarDecl *parse_decl_param()

Ast parse_program()

Parses script.

Public Members

Context *ctx_ = nullptr

Nss *parent_ = nullptr

StringView view_

Ast ast_

Vector<NssToken> tokens

size_t current_ = 0