EzrSquared.Syntax.Parser Class Reference

The ezr² Parser. The job of the Parser is to convert the input Token objects from the Lexer into Node objects to be given as the input to the Runtime.Interpreter.Interpreter. More...

Public Member Functions
	Parser (List< Token > tokens)
	Creates a new Parser object.
ParseResult	Parse ()
	Parses the Token objects in _tokens.

Private Member Functions
void	Advance (int advanceCount=1)
	Advances to the next Token object in _tokens.
void	Reverse (int reverseCount=1)
	Reverses back to the Token object at _index - reverseCount in _tokens.
Token	PeekPrevious ()
	Peeks at the previous Token object from _index in _tokens.
Token	PeekNext (int advanceCount=1)
	Peeks at the next Token object from _index in _tokens.
void	BinaryOperation (Action left, Action right, TokenType[] operators,(TokenType Type, Action OnCase)? specialCase=null)
	Tries creating a BinaryOperationNode.
void	ParseStatements ()
	Tries parsing a 'statements' structure.
void	ParseStatement ()
	Tries parsing a 'statement' structure.
void	ParseExpression (bool itemKeywordRequired=false)
	Tries parsing an 'expression' structure.
void	ParseQuickExpression (bool itemKeywordRequired=false)
	Tries parsing a 'quick-expression' structure.
void	ParseJunction ()
	Tries parsing a 'junction' structure.
void	ParseInversion ()
	Tries parsing an 'inversion' structure.
void	ParseContainsCheck ()
	Tries parsing a 'contains-check' structure.
void	ParseComparison ()
	Tries parsing a 'comparison' structure.
void	ParseBitwiseOr ()
	Tries parsing a 'bitwise-or' structure.
void	ParseBitwiseXOr ()
	Tries parsing a 'bitwise-xor' structure.
void	ParseBitwiseAnd ()
	Tries parsing a 'bitwise-and' structure.
void	ParseBitwiseShift ()
	Tries creating a 'bitwise-shift' structure.
void	ParseArithmeticExpression ()
	Tries parsing an 'arithmetic-expression' structure.
void	ParseTerm ()
	Tries parsing a 'term' structure.
void	ParseFactor ()
	Tries parsing a 'factor' structure.
void	ParsePower ()
	Tries parsing a 'power' structure.
void	ParseObjectAttributeAccess ()
	Tries parsing an 'object-attribute-access' structure.
void	ParseCall ()
	Tries parsing a 'call' structure.
void	ParseAtom ()
	Tries parsing a 'atom' structure.
void	ParseArrayOrParentheticalExpression ()
	Tries parsing an array, an ArrayLikeNode with ArrayLikeNode.CreateList set to false OR a parenthetical expression. Starts from _currentToken, which should be of TokenType TokenType.LeftParenthesis.
void	ParseList ()
	Tries parsing a list, an ArrayLikeNode with ArrayLikeNode.CreateList set to true. Starts from _currentToken, which should be of TokenType TokenType.LeftSquareBracket.
void	ParseDictionary ()
	Tries parsing a dictionary. Starts from _currentToken, which should be of TokenType TokenType.LeftCurlyBracket.
void	ParseIfExpression ()
	Tries parsing an if expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordIf.
void	ParseCountExpression ()
	Tries parsing a count expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordCount.
void	ParseWhileExpression ()
	Tries parsing a while expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordWhile.
void	ParseTryExpression ()
	Tries parsing a try expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordTry.
void	ParseFunctionDefinitionExpression ()
	Tries parsing a function definition expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordFunction.
void	ParseClassDefinitionExpression ()
	Tries parsing an class definition expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordObject.
void	ParseIncludeExpression ()
	Tries parsing an include expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordInclude.
void	ParseDefineBlockExpression ()
	Tries parsing a define block expression. Starts from _currentToken, which should be of TokenType TokenType.KeywordDefine.

Private Attributes
readonly List< Token >	_tokens
	The List<T> of Token objects to be parsed.
readonly ParseResult	_result
	The object that holds the result of the parsing.
int	_index
	The index of the Token object currently being parsed in the _tokens List<T>.
Token	_currentToken
	The Token object currently being parsed at _index of _tokens.

Detailed Description

The ezr² Parser. The job of the Parser is to convert the input Token objects from the Lexer into Node objects to be given as the input to the Runtime.Interpreter.Interpreter.

Constructor & Destructor Documentation

Parser()

EzrSquared.Syntax.Parser.Parser

(

List< Token >

tokens

)

Creates a new Parser object.

Parameters

tokens

The List<T> of Token objects to be parsed.

Member Function Documentation

BinaryOperation()

void EzrSquared.Syntax.Parser.BinaryOperation ( Action left, Action right, TokenType[] operators, (TokenType Type, Action OnCase)? specialCase = null )

private

Tries creating a BinaryOperationNode.

Parameters

left	The function to call for the first operand.
right	The function to call for the second operand.
operators	The operator TokenType object(s).
specialCase	Any special case that needs to be uniquely handled by the "OnCase" Action. "OnCase" is called after the token of type "Type" and any new lines have been parsed, and before right has been called. Note that "Type" must be included in operators .

ParseExpression()

void EzrSquared.Syntax.Parser.ParseExpression ( bool itemKeywordRequired = false )

private

Tries parsing an 'expression' structure.

Parameters

itemKeywordRequired

In cases where the variable assignment expression requires the 'item' keyword, set this to true.

PeekNext()

Token EzrSquared.Syntax.Parser.PeekNext ( int advanceCount = 1 )

private

Peeks at the next Token object from _index in _tokens.

Parameters

advanceCount

The numbers of places to advance in _tokens.

Returns

The Token object.

PeekPrevious()

Token EzrSquared.Syntax.Parser.PeekPrevious ( )

private

Peeks at the previous Token object from _index in _tokens.

Returns

The Token object.

Reverse()

void EzrSquared.Syntax.Parser.Reverse ( int reverseCount = 1 )

private

Reverses back to the Token object at _index - reverseCount in _tokens.

Parameters

reverseCount

The number of positions to reverse _index in _tokens.

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The documentation for this class was generated from the following file:

• D:/Code/csharp/ezrSquared/src/Syntax/Parser/Parser.cs