HTDefaultParser class

Default parser implementation used by Hetu.

Inheritance

• Object
• HTParser
• HTDefaultParser

Constructors

HTDefaultParser({ParserConfig? config})

Properties

column ↔ int

getter/setter pair, inherited

config ↔ ParserConfig

getter/setter pair, inherited

currentModuleImports ↔ List<ImportExportDecl>

getter/setter pair, inherited

currentPrecedings ↔ List<ASTAnnotation>

getter/setter pair, inherited

currentSource ↔ HTSource?

getter/setter pair, inherited

currrentFileName ↔ String?

The file current under processing, used in error message.

getter/setter pair, inherited

curTok ↔ Token

Get current token.

getter/setter pair, inherited

endOfFile ↔ Token

getter/setter pair, inherited

errors ↔ List<HTError>

getter/setter pair, inherited

firstTok ↔ Token

getter/setter pair, inherited

hashCode → int

The hash code for this object.

no setter, inherited

lexer ↔ HTLexer

Lexer used by this parser, created from lexicon.

late, final, inherited

lexicon ↔ HTLexicon

Lexicon definition used by this parser.

late, final, inherited

line ↔ int

getter/setter pair, inherited

name → String

the identity name of this parser.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

advance([int distance = 1]) → Token

Advance till reach distance, return the token at original position.

inherited

expect(List<String> types, {bool consume = false}) → bool

Check current token and some tokens after it to see if the types match, return a boolean result. If consume is true, will advance.

inherited

handlePrecedings() → bool

To handle the comments & empty lines before a expr;

inherited

handleTrailing(ASTNode expr, {bool handleComma = true, String? endMarkForCommaExpressions}) → void

inherited

match(String type) → Token

If the token match the type provided, advance 1 and return the original token. If not, generate an error.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

parseExpr() → ASTNode

Recursive descent parsing

override

parseExprList<T extends ASTNode>({required String endToken, bool handleComma = true, required T? parseFunction()}) → List<T>

A functional programming way to parse expression seperated by comma, such as parameter list, argumetn list, list, group... etc. the comma after the last expression is optional. Note that this method will not consume either the start or the end mark.

inherited

parseSource(HTSource source, {bool printPerformanceStatistics = false}) → ASTSource

Convert string content into ASTSource by a certain grammar rules set.

inherited

parseStmt({required ParseStyle style}) → ASTNode?

override

parseTokens(Token token, {HTSource? source, ParseStyle? style}) → List<ASTNode>

Convert tokens into a list of ASTNode by a certain grammar rules set.

inherited

peek(int distance) → Token

Get a token at a relative distance from current position.

inherited

resetFlags() → void

override

savePrecedings() → List<ASTAnnotation>

inherited

seek(String type) → Token

Search for a token type, return the token next to it.

inherited

seekGroupClosing(Map<String, String> groupClosings) → Token

Search for parentheses end that can close the current one, return the token next to it.

inherited

setPrecedings(ASTNode expr) → bool

inherited

setTokens({required Token token, int? line, int? column}) → void

Set current tokens.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited