2.1.1.3.1.3. racketinterpreter.processes.parsing

class Parser(lexer: Lexer)

Bases: object

assignment_statement() → Union[racketinterpreter.classes.ast.IdAssign, racketinterpreter.classes.ast.ProcAssign, racketinterpreter.classes.ast.StructAssign]

assignment_statement: constant_assignment

function_assignment

structure_assignment

check_expect() → racketinterpreter.classes.ast.CheckExpect

cond() → racketinterpreter.classes.ast.Cond

cond: LPAREN COND (cond-branch|data|ID|cond)* cond-else? RPAREN

cond_branch() → racketinterpreter.classes.ast.CondBranch

cond-branch: p-expr

cons() → racketinterpreter.classes.ast.Cons

LPAREN CONS expr{0,1} expr* RPAREN

constant_assignment() → racketinterpreter.classes.ast.IdAssign

constant_assignment: LPAREN DEFINE expr* RPAREN

data() → Union[racketinterpreter.classes.ast.Bool, racketinterpreter.classes.ast.Dec, racketinterpreter.classes.ast.Int, racketinterpreter.classes.ast.Rat, racketinterpreter.classes.ast.Str, racketinterpreter.classes.ast.Sym]

data: INTEGER

BOOLEAN

STRING

eat(token_type: racketinterpreter.classes.tokens.TokenType) → racketinterpreter.classes.tokens.Token

Eat the current token and advance to the next one.

Compare the current token to the passed type. If they match then ‘eat’ the current token and assign the next token to self.current_token, otherwise raise an exception.

error_unexpected_token(token) → None

expr() → Union[racketinterpreter.classes.ast.Bool, racketinterpreter.classes.ast.Cond, racketinterpreter.classes.ast.Cons, racketinterpreter.classes.ast.Dec, racketinterpreter.classes.ast.Empty, racketinterpreter.classes.ast.Int, racketinterpreter.classes.ast.Id, racketinterpreter.classes.ast.ProcCall, racketinterpreter.classes.ast.Rat, racketinterpreter.classes.ast.Str, racketinterpreter.classes.ast.Sym]

expr: data

p-expr

ID

cond

list

list_abrv() → racketinterpreter.classes.ast.ProcCall

p_expr() → racketinterpreter.classes.ast.ProcCall

p-expr: LPAREN expr* RPAREN

parse() → racketinterpreter.classes.ast.Program

procedure_assignment() → racketinterpreter.classes.ast.ProcAssign

procedure_assignment: LPAREN DEFINE LPAREN expr* RPAREN expr* RPAREN

program() → racketinterpreter.classes.ast.Program

programstatement

statement compound_statement

statement() → racketinterpreter.classes.ast.AST

statement: assignment_statement

expr

structure_assignment() → racketinterpreter.classes.ast.StructAssign

structure_assignment: LPAREN DEFINE_STRUCT LPAREN expr* RPAREN RPAREN