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NodeFactory.ts
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import * as escodegen from 'escodegen';
import * as ESTree from 'estree';
import { TStatement } from '../types/node/TStatement';
import { NodeType } from '../enums/node/NodeType';
export class NodeFactory {
/**
* @param {TStatement[]} body
* @returns {Program}
*/
public static programNode (body: TStatement[] = []): ESTree.Program {
return {
type: NodeType.Program,
body,
sourceType: 'script',
metadata: { ignoredNode: false }
};
}
/**
* @param {(Expression | SpreadElement)[]} elements
* @returns {ArrayExpression}
*/
public static arrayExpressionNode (
elements: (ESTree.Expression | ESTree.SpreadElement)[] = []
): ESTree.ArrayExpression {
return {
type: NodeType.ArrayExpression,
elements,
metadata: { ignoredNode: false }
};
}
/**
* @param {AssignmentOperator} operator
* @param {Pattern | MemberExpression} left
* @param {Expression} right
* @returns {AssignmentExpression}
*/
public static assignmentExpressionNode (
operator: ESTree.AssignmentOperator,
left: ESTree.Pattern | ESTree.MemberExpression,
right: ESTree.Expression
): ESTree.AssignmentExpression {
return {
type: NodeType.AssignmentExpression,
operator,
left,
right,
metadata: { ignoredNode: false }
};
}
/**
* @param {BinaryOperator} operator
* @param {Expression} left
* @param {Expression} right
* @returns {BinaryExpression}
*/
public static binaryExpressionNode (
operator: ESTree.BinaryOperator,
left: ESTree.Expression,
right: ESTree.Expression,
): ESTree.BinaryExpression {
return {
type: NodeType.BinaryExpression,
operator,
left,
right,
metadata: { ignoredNode: false }
};
}
/**
* @param {Statement[]} body
* @returns {BlockStatement}
*/
public static blockStatementNode (body: ESTree.Statement[] = []): ESTree.BlockStatement {
return {
type: NodeType.BlockStatement,
body,
metadata: { ignoredNode: false }
};
}
/**
* @param {Identifier} label
* @returns {BreakStatement}
*/
public static breakStatement (label?: ESTree.Identifier): ESTree.BreakStatement {
return {
type: NodeType.BreakStatement,
label,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} callee
* @param {(Expression | SpreadElement)[]} args
* @returns {CallExpression}
*/
public static callExpressionNode (
callee: ESTree.Expression,
args: (ESTree.Expression | ESTree.SpreadElement)[] = []
): ESTree.CallExpression {
return {
type: NodeType.CallExpression,
callee,
arguments: args,
metadata: { ignoredNode: false }
};
}
/**
* @param {Identifier} label
* @returns {ContinueStatement}
*/
public static continueStatement (label?: ESTree.Identifier): ESTree.ContinueStatement {
return {
type: NodeType.ContinueStatement,
label,
metadata: { ignoredNode: false }
};
}
/**
* @param {Literal} expression
* @param {string} directive
* @returns {Directive}
*/
public static directiveNode (
expression: ESTree.Literal,
directive: string
): ESTree.Directive {
return {
type: NodeType.ExpressionStatement,
expression,
directive,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} expression
* @returns {ExpressionStatement}
*/
public static expressionStatementNode (expression: ESTree.Expression): ESTree.ExpressionStatement {
return {
type: NodeType.ExpressionStatement,
expression,
metadata: { ignoredNode: false }
};
}
/**
* @param {string} functionName
* @param {Identifier[]} params
* @param {BlockStatement} body
* @returns {FunctionDeclaration}
*/
public static functionDeclarationNode (
functionName: string,
params: ESTree.Identifier[],
body: ESTree.BlockStatement
): ESTree.FunctionDeclaration {
return {
type: NodeType.FunctionDeclaration,
id: NodeFactory.identifierNode(functionName),
params,
body,
generator: false,
metadata: { ignoredNode: false }
};
}
/**
* @param {Identifier[]} params
* @param {BlockStatement} body
* @returns {FunctionExpression}
*/
public static functionExpressionNode (
params: ESTree.Identifier[],
body: ESTree.BlockStatement
): ESTree.FunctionExpression {
return {
type: NodeType.FunctionExpression,
params,
body,
generator: false,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} test
* @param {BlockStatement} consequent
* @param {BlockStatement} alternate
* @returns {IfStatement}
*/
public static ifStatementNode (
test: ESTree.Expression,
consequent: ESTree.BlockStatement,
alternate?: ESTree.BlockStatement
): ESTree.IfStatement {
return {
type: NodeType.IfStatement,
test,
consequent,
...alternate && { alternate },
metadata: { ignoredNode: false }
};
}
/**
* @param {string} name
* @returns {Identifier}
*/
public static identifierNode (name: string): ESTree.Identifier {
return {
type: NodeType.Identifier,
name,
metadata: { ignoredNode: false }
};
}
/**
* @param {(ImportSpecifier | ImportDefaultSpecifier | ImportNamespaceSpecifier)[]} specifiers
* @param {Literal} source
* @returns {ImportDeclaration}
*/
public static importDeclarationNode (
specifiers: (ESTree.ImportSpecifier | ESTree.ImportDefaultSpecifier | ESTree.ImportNamespaceSpecifier)[],
source: ESTree.Literal
): ESTree.ImportDeclaration {
return {
type: NodeType.ImportDeclaration,
specifiers,
source,
metadata: { ignoredNode: false }
};
}
/**
* @param {boolean | number | string} value
* @param {string} raw
* @returns {Literal}
*/
public static literalNode (value: boolean | number | string, raw?: string): ESTree.Literal {
raw = raw !== undefined ? raw : `'${value}'`;
return {
type: NodeType.Literal,
value,
raw,
'x-verbatim-property': {
content: raw,
precedence: escodegen.Precedence.Primary
},
metadata: { ignoredNode: false }
};
}
/**
* @param {LogicalOperator} operator
* @param {Expression} left
* @param {Expression} right
* @returns {LogicalExpression}
*/
public static logicalExpressionNode (
operator: ESTree.LogicalOperator,
left: ESTree.Expression,
right: ESTree.Expression,
): ESTree.LogicalExpression {
return {
type: NodeType.LogicalExpression,
operator,
left,
right,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression | Super} object
* @param {Expression} property
* @param {boolean} computed
* @returns {MemberExpression}
*/
public static memberExpressionNode (
object: ESTree.Expression | ESTree.Super,
property: ESTree.Expression,
computed: boolean = false
): ESTree.MemberExpression {
return {
type: NodeType.MemberExpression,
computed,
object,
property,
metadata: { ignoredNode: false }
};
}
/**
* @param {(ESTree.Property | ESTree.SpreadElement)[]} properties
* @returns {ESTree.ObjectExpression}
*/
public static objectExpressionNode (properties: (ESTree.Property | ESTree.SpreadElement)[]): ESTree.ObjectExpression {
return {
type: NodeType.ObjectExpression,
properties,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} key
* @param {Expression | Pattern} value
* @param {boolean} computed
* @returns {Property}
*/
public static propertyNode (
key: ESTree.Expression,
value: ESTree.Expression | ESTree.Pattern,
computed: boolean = false
): ESTree.Property {
return {
type: NodeType.Property,
key,
value,
kind: 'init',
method: false,
shorthand: false,
computed,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} argument
* @returns {ReturnStatement}
*/
public static returnStatementNode (argument: ESTree.Expression): ESTree.ReturnStatement {
return {
type: NodeType.ReturnStatement,
argument,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} discriminant
* @param {SwitchCase[]} cases
* @returns {SwitchStatement}
*/
public static switchStatementNode (
discriminant: ESTree.Expression,
cases: ESTree.SwitchCase[]
): ESTree.SwitchStatement {
return {
type: NodeType.SwitchStatement,
discriminant,
cases,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} test
* @param {Statement[]} consequent
* @returns {SwitchCase}
*/
public static switchCaseNode (test: ESTree.Expression, consequent: ESTree.Statement[]): ESTree.SwitchCase {
return {
type: NodeType.SwitchCase,
test,
consequent,
metadata: { ignoredNode: false }
};
}
/**
* @param {UnaryOperator} operator
* @param {Expression} argument
* @param {true} prefix
* @returns {UnaryExpression}
*/
public static unaryExpressionNode (
operator: ESTree.UnaryOperator,
argument: ESTree.Expression,
prefix: true = true
): ESTree.UnaryExpression {
return {
type: NodeType.UnaryExpression,
operator,
argument,
prefix,
metadata: { ignoredNode: false }
};
}
/**
* @param {UpdateOperator} operator
* @param {Expression} argumentExpr
* @returns {UpdateExpression}
*/
public static updateExpressionNode (operator: ESTree.UpdateOperator, argumentExpr: ESTree.Expression): ESTree.UpdateExpression {
return {
type: NodeType.UpdateExpression,
operator,
argument: argumentExpr,
prefix: false,
metadata: { ignoredNode: false }
};
}
/**
* @param {VariableDeclarator[]} declarations
* @param {string} kind
* @returns {VariableDeclaration}
*/
public static variableDeclarationNode (
declarations: ESTree.VariableDeclarator[] = [],
kind: 'var' | 'let' | 'const' = 'var'
): ESTree.VariableDeclaration {
return {
type: NodeType.VariableDeclaration,
declarations,
kind,
metadata: { ignoredNode: false }
};
}
/**
* @param {Identifier} id
* @param {Expression | null} init
* @returns {VariableDeclarator}
*/
public static variableDeclaratorNode (id: ESTree.Identifier, init: ESTree.Expression | null): ESTree.VariableDeclarator {
return {
type: NodeType.VariableDeclarator,
id,
init,
metadata: { ignoredNode: false }
};
}
/**
* @param {Expression} test
* @param {Statement} body
* @returns {WhileStatement}
*/
public static whileStatementNode (test: ESTree.Expression, body: ESTree.Statement): ESTree.WhileStatement {
return {
type: NodeType.WhileStatement,
test,
body,
metadata: { ignoredNode: false }
};
}
}