Class Beer

The interpreter class is responsible for evaluating the AST

Hierarchy

Beer

Implements

SyntaxVisitor<BeerObject, void>

Constructors

constructor

new Beer(): Beer
define clock native function

Returns Beer

Memberof
Interpreter
- Defined in src/interpreter.ts:34

Properties

`Private` environment

environment: Environment = ...

globals

globals: Environment = ...

`Private` locals

locals: Map<Expr, number> = ...

Methods

checkNumberOperands

checkNumberOperands(token, left, right): void
Checks if the operands are numbers
Parameters
- token: Token
  
  of the operator
- left: BeerObject
- right: BeerObject
Returns void
- Defined in src/interpreter.ts:108

`Private` evaluate

evaluate(expr): BeerObject
Evaluates the AST via visitor
Parameters
- expr: Expr
  
  The expression to be evaluated
Returns BeerObject
- Defined in src/interpreter.ts:86

`Private` execute

execute(stmt): void
Analog to this.evaluate() but for statements
Parameters
- stmt: Stmt
  
  ast.Stmt to be executed
Returns void
- Defined in src/interpreter.ts:77

execute_block

execute_block(statements, environment): void
Execute a list of statements in an given environment
Parameters
- statements: Stmt[]
  
  list of statements
- environment: Environment
  
  environment to execute the statements in.
Returns void
- Defined in src/interpreter.ts:146

interpret

interpret(exprs): void
Parameters
- exprs: Stmt[]
Returns void
- Defined in src/interpreter.ts:62

`Private` is_equal

is_equal(a, b): boolean
Parameters
- a: BeerObject
  
  BeerObject
- b: BeerObject
  
  BeerObject
Returns boolean
true if a and b are equal, false otherwise
- Defined in src/interpreter.ts:95

`Private` is_truthy

is_truthy(object): boolean
Checks if the object is truthy
Parameters
- object: BeerObject
  
  BeerObject
Returns boolean
- Defined in src/interpreter.ts:122

`Private` look_up_variable

look_up_variable(name, expr): BeerObject
Parameters
- name: Token
- expr: Expr
Returns BeerObject
- Defined in src/interpreter.ts:49

resolve

resolve(expr, depth): void
Set resolved values to the locals of the interpreter
Parameters
- expr: Expr
  
  ast.Expr to be interpreted
- depth: number
  
  The depth of the expression
Returns void
- Defined in src/interpreter.ts:45

`Private` stringify

stringify(object): string
Converts the object to a string representation
Parameters
- object: BeerObject
  
  BeerObject
Returns string
string representation of the object
- Defined in src/interpreter.ts:133

visitAssignExpr

visitAssignExpr(expr): BeerObject
Parameters
- expr: AssignExpr
  
  {ast.LiteralExpr} expression
Returns BeerObject
Implementation of ast.SyntaxVisitor.visitAssignExpr
- Defined in src/interpreter.ts:175

visitBinaryExpr

visitBinaryExpr(expr): BeerObject
Parameters
- expr: BinaryExpr
  
  The expression to be evaluated
Returns BeerObject
Implementation of ast.SyntaxVisitor.visitBinaryExpr
- Defined in src/interpreter.ts:189

visitBlockStmt

visitBlockStmt(stmt): void
Parameters
- stmt: BlockStmt
  
  The block statement to be evaluated
Returns void
Implementation of ast.SyntaxVisitor.visitBlockStmt
- Defined in src/interpreter.ts:439

visitCallExpr

visitCallExpr(expr): BeerObject
Parameters
- expr: CallExpr
  
  TODO
Returns BeerObject
Implementation of ast.SyntaxVisitor.visitCallExpr
- Defined in src/interpreter.ts:300

visitClassStmt

visitClassStmt(stmt): void
Parameters
- stmt: ClassStmt
  
  The statement to be evaluated
Returns void
Implementation of ast.SyntaxVisitor.visitClassStmt
- Defined in src/interpreter.ts:326

visitExpressionStmt

visitExpressionStmt(stmt): void
Evaluate the expression
Parameters
- stmt: ExpressionStmt
  
  The expression to be evaluated
Returns void
void;
Implementation of ast.SyntaxVisitor.visitExpressionStmt
- Defined in src/interpreter.ts:418

visitForStmt

visitForStmt(stmt): void
Parameters
- stmt: ForStmt
  
  The statement to be evaluated
Returns void
void;
Implementation of ast.SyntaxVisitor.visitForStmt
- Defined in src/interpreter.ts:361

visitFunctionStmt

visitFunctionStmt(stmt): void
Parameters
- stmt: FunctionStmt
  
  The expression to be evaluated
Returns void
void;
Implementation of ast.SyntaxVisitor.visitFunctionStmt
- Defined in src/interpreter.ts:397

visitGetExpr

visitGetExpr(expr): BeerObject
Parameters
- expr: GetExpr
  
  The expression to be evaluated
Returns BeerObject
BeerObject;
Implementation of ast.SyntaxVisitor.visitGetExpr
- Defined in src/interpreter.ts:459

visitGroupingExpr

visitGroupingExpr(expr): BeerObject
Parameters
- expr: GroupingExpr
  
  The expression to be evaluated
Returns BeerObject
BeerObject;
Implementation of ast.SyntaxVisitor.visitGroupingExpr
- Defined in src/interpreter.ts:273

visitIfStmt

visitIfStmt(stmt): void
If statement visitor
Parameters
- stmt: IfStmt
  
  The if statement to be evaluated
Returns void
Implementation of ast.SyntaxVisitor.visitIfStmt
- Defined in src/interpreter.ts:447

visitLiteralExpr

visitLiteralExpr(expr): BeerObject
Parameters
- expr: LiteralExpr
  
  The expression to be evaluated
Returns BeerObject
BeerObject;
Implementation of ast.SyntaxVisitor.visitLiteralExpr
- Defined in src/interpreter.ts:265

visitLogicalExpr

visitLogicalExpr(expr): BeerObject
Parameters
- expr: LogicalExpr
Returns BeerObject
Implementation of ast.SyntaxVisitor.visitLogicalExpr
- Defined in src/interpreter.ts:286

visitPrintStmt

visitPrintStmt(stmt): void
Print the evaluated expression
Parameters
- stmt: PrintStmt
  
  The expression to be evaluated
Returns void
void;
Implementation of ast.SyntaxVisitor.visitPrintStmt
- Defined in src/interpreter.ts:408

visitReturnStmt

visitReturnStmt(stmt): void
Parameters
- stmt: ReturnStmt
  
  The expression to be evaluated
Returns void
Implementation of ast.SyntaxVisitor.visitReturnStmt
- Defined in src/interpreter.ts:387

visitSetExpr

visitSetExpr(expr): BeerObject
Parameters
- expr: SetExpr
  
  visit for setExpr
Returns BeerObject
BeerObject;
Implementation of ast.SyntaxVisitor.visitSetExpr
- Defined in src/interpreter.ts:473

visitSuperExpr

visitSuperExpr(expr): BeerObject
Parameters
- expr: SuperExpr
  
  Visitor for GetExpr
Returns BeerObject
BeerObject;
Implementation of ast.SyntaxVisitor.visitSuperExpr
- Defined in src/interpreter.ts:489

visitThisExpr

visitThisExpr(expr): BeerObject
Visitor for this in classes
Parameters
- expr: ThisExpr
  
  {ast.ThisExpr} expression
Returns BeerObject
Implementation of ast.SyntaxVisitor.visitThisExpr
- Defined in src/interpreter.ts:167

visitUnaryExpr

visitUnaryExpr(expr): BeerObject
Parameters
- expr: UnaryExpr
  
  The expression to be evaluated
Returns BeerObject
BeerObject;
Implementation of ast.SyntaxVisitor.visitUnaryExpr
- Defined in src/interpreter.ts:250

visitVarStmt

visitVarStmt(stmt): void
Evaluate the stmt and define in the environment
Parameters
- stmt: VarStmt
  
  The statment to be evaluated
Returns void
void;
Implementation of ast.SyntaxVisitor.visitVarStmt
- Defined in src/interpreter.ts:427

visitVariableExpr

visitVariableExpr(expr): BeerObject
Find the value of the variable in the environment
Parameters
- expr: VariableExpr
  
  The expression to be evaluated
Returns BeerObject
BeerObject;
Implementation of ast.SyntaxVisitor.visitVariableExpr
- Defined in src/interpreter.ts:282

visitWhileStmt

visitWhileStmt(stmt): void
Parameters
- stmt: WhileStmt
  
  The expression to be evaluated
Returns void
void;
Implementation of ast.SyntaxVisitor.visitWhileStmt
- Defined in src/interpreter.ts:378

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