609 lines
14 KiB
JavaScript
Executable file
609 lines
14 KiB
JavaScript
Executable file
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
/** @typedef {import("estree").Node} Node */
|
|
/** @typedef {import("./JavascriptParser").Range} Range */
|
|
/** @typedef {import("./JavascriptParser").VariableInfoInterface} VariableInfoInterface */
|
|
|
|
const TypeUnknown = 0;
|
|
const TypeUndefined = 1;
|
|
const TypeNull = 2;
|
|
const TypeString = 3;
|
|
const TypeNumber = 4;
|
|
const TypeBoolean = 5;
|
|
const TypeRegExp = 6;
|
|
const TypeConditional = 7;
|
|
const TypeArray = 8;
|
|
const TypeConstArray = 9;
|
|
const TypeIdentifier = 10;
|
|
const TypeWrapped = 11;
|
|
const TypeTemplateString = 12;
|
|
const TypeBigInt = 13;
|
|
|
|
class BasicEvaluatedExpression {
|
|
constructor() {
|
|
this.type = TypeUnknown;
|
|
/** @type {[number, number] | undefined} */
|
|
this.range = undefined;
|
|
/** @type {boolean} */
|
|
this.falsy = false;
|
|
/** @type {boolean} */
|
|
this.truthy = false;
|
|
/** @type {boolean | undefined} */
|
|
this.nullish = undefined;
|
|
/** @type {boolean} */
|
|
this.sideEffects = true;
|
|
/** @type {boolean | undefined} */
|
|
this.bool = undefined;
|
|
/** @type {number | undefined} */
|
|
this.number = undefined;
|
|
/** @type {bigint | undefined} */
|
|
this.bigint = undefined;
|
|
/** @type {RegExp | undefined} */
|
|
this.regExp = undefined;
|
|
/** @type {string | undefined} */
|
|
this.string = undefined;
|
|
/** @type {BasicEvaluatedExpression[] | undefined} */
|
|
this.quasis = undefined;
|
|
/** @type {BasicEvaluatedExpression[] | undefined} */
|
|
this.parts = undefined;
|
|
/** @type {any[] | undefined} */
|
|
this.array = undefined;
|
|
/** @type {BasicEvaluatedExpression[] | undefined} */
|
|
this.items = undefined;
|
|
/** @type {BasicEvaluatedExpression[] | undefined} */
|
|
this.options = undefined;
|
|
/** @type {BasicEvaluatedExpression | undefined | null} */
|
|
this.prefix = undefined;
|
|
/** @type {BasicEvaluatedExpression | undefined | null} */
|
|
this.postfix = undefined;
|
|
/** @type {BasicEvaluatedExpression[] | undefined} */
|
|
this.wrappedInnerExpressions = undefined;
|
|
/** @type {string | VariableInfoInterface | undefined} */
|
|
this.identifier = undefined;
|
|
/** @type {string | VariableInfoInterface | undefined} */
|
|
this.rootInfo = undefined;
|
|
/** @type {(() => string[]) | undefined} */
|
|
this.getMembers = undefined;
|
|
/** @type {(() => boolean[]) | undefined} */
|
|
this.getMembersOptionals = undefined;
|
|
/** @type {(() => Range[]) | undefined} */
|
|
this.getMemberRanges = undefined;
|
|
/** @type {Node | undefined} */
|
|
this.expression = undefined;
|
|
}
|
|
|
|
isUnknown() {
|
|
return this.type === TypeUnknown;
|
|
}
|
|
|
|
isNull() {
|
|
return this.type === TypeNull;
|
|
}
|
|
|
|
isUndefined() {
|
|
return this.type === TypeUndefined;
|
|
}
|
|
|
|
isString() {
|
|
return this.type === TypeString;
|
|
}
|
|
|
|
isNumber() {
|
|
return this.type === TypeNumber;
|
|
}
|
|
|
|
isBigInt() {
|
|
return this.type === TypeBigInt;
|
|
}
|
|
|
|
isBoolean() {
|
|
return this.type === TypeBoolean;
|
|
}
|
|
|
|
isRegExp() {
|
|
return this.type === TypeRegExp;
|
|
}
|
|
|
|
isConditional() {
|
|
return this.type === TypeConditional;
|
|
}
|
|
|
|
isArray() {
|
|
return this.type === TypeArray;
|
|
}
|
|
|
|
isConstArray() {
|
|
return this.type === TypeConstArray;
|
|
}
|
|
|
|
isIdentifier() {
|
|
return this.type === TypeIdentifier;
|
|
}
|
|
|
|
isWrapped() {
|
|
return this.type === TypeWrapped;
|
|
}
|
|
|
|
isTemplateString() {
|
|
return this.type === TypeTemplateString;
|
|
}
|
|
|
|
/**
|
|
* Is expression a primitive or an object type value?
|
|
* @returns {boolean | undefined} true: primitive type, false: object type, undefined: unknown/runtime-defined
|
|
*/
|
|
isPrimitiveType() {
|
|
switch (this.type) {
|
|
case TypeUndefined:
|
|
case TypeNull:
|
|
case TypeString:
|
|
case TypeNumber:
|
|
case TypeBoolean:
|
|
case TypeBigInt:
|
|
case TypeWrapped:
|
|
case TypeTemplateString:
|
|
return true;
|
|
case TypeRegExp:
|
|
case TypeArray:
|
|
case TypeConstArray:
|
|
return false;
|
|
default:
|
|
return undefined;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Is expression a runtime or compile-time value?
|
|
* @returns {boolean} true: compile time value, false: runtime value
|
|
*/
|
|
isCompileTimeValue() {
|
|
switch (this.type) {
|
|
case TypeUndefined:
|
|
case TypeNull:
|
|
case TypeString:
|
|
case TypeNumber:
|
|
case TypeBoolean:
|
|
case TypeRegExp:
|
|
case TypeConstArray:
|
|
case TypeBigInt:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the compile-time value of the expression
|
|
* @returns {any} the javascript value
|
|
*/
|
|
asCompileTimeValue() {
|
|
switch (this.type) {
|
|
case TypeUndefined:
|
|
return undefined;
|
|
case TypeNull:
|
|
return null;
|
|
case TypeString:
|
|
return this.string;
|
|
case TypeNumber:
|
|
return this.number;
|
|
case TypeBoolean:
|
|
return this.bool;
|
|
case TypeRegExp:
|
|
return this.regExp;
|
|
case TypeConstArray:
|
|
return this.array;
|
|
case TypeBigInt:
|
|
return this.bigint;
|
|
default:
|
|
throw new Error(
|
|
"asCompileTimeValue must only be called for compile-time values"
|
|
);
|
|
}
|
|
}
|
|
|
|
isTruthy() {
|
|
return this.truthy;
|
|
}
|
|
|
|
isFalsy() {
|
|
return this.falsy;
|
|
}
|
|
|
|
isNullish() {
|
|
return this.nullish;
|
|
}
|
|
|
|
/**
|
|
* Can this expression have side effects?
|
|
* @returns {boolean} false: never has side effects
|
|
*/
|
|
couldHaveSideEffects() {
|
|
return this.sideEffects;
|
|
}
|
|
|
|
/**
|
|
* Creates a boolean representation of this evaluated expression.
|
|
* @returns {boolean | undefined} true: truthy, false: falsy, undefined: unknown
|
|
*/
|
|
asBool() {
|
|
if (this.truthy) return true;
|
|
if (this.falsy || this.nullish) return false;
|
|
if (this.isBoolean()) return this.bool;
|
|
if (this.isNull()) return false;
|
|
if (this.isUndefined()) return false;
|
|
if (this.isString()) return this.string !== "";
|
|
if (this.isNumber()) return this.number !== 0;
|
|
if (this.isBigInt()) return this.bigint !== BigInt(0);
|
|
if (this.isRegExp()) return true;
|
|
if (this.isArray()) return true;
|
|
if (this.isConstArray()) return true;
|
|
if (this.isWrapped()) {
|
|
return (this.prefix && this.prefix.asBool()) ||
|
|
(this.postfix && this.postfix.asBool())
|
|
? true
|
|
: undefined;
|
|
}
|
|
if (this.isTemplateString()) {
|
|
const str = this.asString();
|
|
if (typeof str === "string") return str !== "";
|
|
}
|
|
return undefined;
|
|
}
|
|
|
|
/**
|
|
* Creates a nullish coalescing representation of this evaluated expression.
|
|
* @returns {boolean | undefined} true: nullish, false: not nullish, undefined: unknown
|
|
*/
|
|
asNullish() {
|
|
const nullish = this.isNullish();
|
|
|
|
if (nullish === true || this.isNull() || this.isUndefined()) return true;
|
|
|
|
if (nullish === false) return false;
|
|
if (this.isTruthy()) return false;
|
|
if (this.isBoolean()) return false;
|
|
if (this.isString()) return false;
|
|
if (this.isNumber()) return false;
|
|
if (this.isBigInt()) return false;
|
|
if (this.isRegExp()) return false;
|
|
if (this.isArray()) return false;
|
|
if (this.isConstArray()) return false;
|
|
if (this.isTemplateString()) return false;
|
|
if (this.isRegExp()) return false;
|
|
|
|
return undefined;
|
|
}
|
|
|
|
/**
|
|
* Creates a string representation of this evaluated expression.
|
|
* @returns {string | undefined} the string representation or undefined if not possible
|
|
*/
|
|
asString() {
|
|
if (this.isBoolean()) return `${this.bool}`;
|
|
if (this.isNull()) return "null";
|
|
if (this.isUndefined()) return "undefined";
|
|
if (this.isString()) return this.string;
|
|
if (this.isNumber()) return `${this.number}`;
|
|
if (this.isBigInt()) return `${this.bigint}`;
|
|
if (this.isRegExp()) return `${this.regExp}`;
|
|
if (this.isArray()) {
|
|
let array = [];
|
|
for (const item of /** @type {BasicEvaluatedExpression[]} */ (
|
|
this.items
|
|
)) {
|
|
const itemStr = item.asString();
|
|
if (itemStr === undefined) return undefined;
|
|
array.push(itemStr);
|
|
}
|
|
return `${array}`;
|
|
}
|
|
if (this.isConstArray()) return `${this.array}`;
|
|
if (this.isTemplateString()) {
|
|
let str = "";
|
|
for (const part of /** @type {BasicEvaluatedExpression[]} */ (
|
|
this.parts
|
|
)) {
|
|
const partStr = part.asString();
|
|
if (partStr === undefined) return undefined;
|
|
str += partStr;
|
|
}
|
|
return str;
|
|
}
|
|
return undefined;
|
|
}
|
|
|
|
/**
|
|
* @param {string} string value
|
|
* @returns {BasicEvaluatedExpression} basic evaluated expression
|
|
*/
|
|
setString(string) {
|
|
this.type = TypeString;
|
|
this.string = string;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
setUndefined() {
|
|
this.type = TypeUndefined;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
setNull() {
|
|
this.type = TypeNull;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to a number
|
|
* @param {number} number number to set
|
|
* @returns {this} this
|
|
*/
|
|
setNumber(number) {
|
|
this.type = TypeNumber;
|
|
this.number = number;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to a BigInt
|
|
* @param {bigint} bigint bigint to set
|
|
* @returns {this} this
|
|
*/
|
|
setBigInt(bigint) {
|
|
this.type = TypeBigInt;
|
|
this.bigint = bigint;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to a boolean
|
|
* @param {boolean} bool boolean to set
|
|
* @returns {this} this
|
|
*/
|
|
setBoolean(bool) {
|
|
this.type = TypeBoolean;
|
|
this.bool = bool;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to a regular expression
|
|
* @param {RegExp} regExp regular expression to set
|
|
* @returns {this} this
|
|
*/
|
|
setRegExp(regExp) {
|
|
this.type = TypeRegExp;
|
|
this.regExp = regExp;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to a particular identifier and its members.
|
|
*
|
|
* @param {string | VariableInfoInterface} identifier identifier to set
|
|
* @param {string | VariableInfoInterface} rootInfo root info
|
|
* @param {() => string[]} getMembers members
|
|
* @param {() => boolean[]=} getMembersOptionals optional members
|
|
* @param {() => Range[]=} getMemberRanges ranges of progressively increasing sub-expressions
|
|
* @returns {this} this
|
|
*/
|
|
setIdentifier(
|
|
identifier,
|
|
rootInfo,
|
|
getMembers,
|
|
getMembersOptionals,
|
|
getMemberRanges
|
|
) {
|
|
this.type = TypeIdentifier;
|
|
this.identifier = identifier;
|
|
this.rootInfo = rootInfo;
|
|
this.getMembers = getMembers;
|
|
this.getMembersOptionals = getMembersOptionals;
|
|
this.getMemberRanges = getMemberRanges;
|
|
this.sideEffects = true;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Wraps an array of expressions with a prefix and postfix expression.
|
|
*
|
|
* @param {BasicEvaluatedExpression | null | undefined} prefix Expression to be added before the innerExpressions
|
|
* @param {BasicEvaluatedExpression | null | undefined} postfix Expression to be added after the innerExpressions
|
|
* @param {BasicEvaluatedExpression[]} innerExpressions Expressions to be wrapped
|
|
* @returns {this} this
|
|
*/
|
|
setWrapped(prefix, postfix, innerExpressions) {
|
|
this.type = TypeWrapped;
|
|
this.prefix = prefix;
|
|
this.postfix = postfix;
|
|
this.wrappedInnerExpressions = innerExpressions;
|
|
this.sideEffects = true;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Stores the options of a conditional expression.
|
|
*
|
|
* @param {BasicEvaluatedExpression[]} options optional (consequent/alternate) expressions to be set
|
|
* @returns {this} this
|
|
*/
|
|
setOptions(options) {
|
|
this.type = TypeConditional;
|
|
this.options = options;
|
|
this.sideEffects = true;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Adds options to a conditional expression.
|
|
*
|
|
* @param {BasicEvaluatedExpression[]} options optional (consequent/alternate) expressions to be added
|
|
* @returns {this} this
|
|
*/
|
|
addOptions(options) {
|
|
if (!this.options) {
|
|
this.type = TypeConditional;
|
|
this.options = [];
|
|
this.sideEffects = true;
|
|
}
|
|
for (const item of options) {
|
|
this.options.push(item);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to an array of expressions.
|
|
*
|
|
* @param {BasicEvaluatedExpression[]} items expressions to set
|
|
* @returns {this} this
|
|
*/
|
|
setItems(items) {
|
|
this.type = TypeArray;
|
|
this.items = items;
|
|
this.sideEffects = items.some(i => i.couldHaveSideEffects());
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to an array of strings.
|
|
*
|
|
* @param {string[]} array array to set
|
|
* @returns {this} this
|
|
*/
|
|
setArray(array) {
|
|
this.type = TypeConstArray;
|
|
this.array = array;
|
|
this.sideEffects = false;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of this expression to a processed/unprocessed template string. Used
|
|
* for evaluating TemplateLiteral expressions in the JavaScript Parser.
|
|
*
|
|
* @param {BasicEvaluatedExpression[]} quasis template string quasis
|
|
* @param {BasicEvaluatedExpression[]} parts template string parts
|
|
* @param {"cooked" | "raw"} kind template string kind
|
|
* @returns {this} this
|
|
*/
|
|
setTemplateString(quasis, parts, kind) {
|
|
this.type = TypeTemplateString;
|
|
this.quasis = quasis;
|
|
this.parts = parts;
|
|
this.templateStringKind = kind;
|
|
this.sideEffects = parts.some(p => p.sideEffects);
|
|
return this;
|
|
}
|
|
|
|
setTruthy() {
|
|
this.falsy = false;
|
|
this.truthy = true;
|
|
this.nullish = false;
|
|
return this;
|
|
}
|
|
|
|
setFalsy() {
|
|
this.falsy = true;
|
|
this.truthy = false;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the value of the expression to nullish.
|
|
*
|
|
* @param {boolean} value true, if the expression is nullish
|
|
* @returns {this} this
|
|
*/
|
|
setNullish(value) {
|
|
this.nullish = value;
|
|
|
|
if (value) return this.setFalsy();
|
|
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set's the range for the expression.
|
|
*
|
|
* @param {[number, number]} range range to set
|
|
* @returns {this} this
|
|
*/
|
|
setRange(range) {
|
|
this.range = range;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set whether or not the expression has side effects.
|
|
*
|
|
* @param {boolean} sideEffects true, if the expression has side effects
|
|
* @returns {this} this
|
|
*/
|
|
setSideEffects(sideEffects = true) {
|
|
this.sideEffects = sideEffects;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Set the expression node for the expression.
|
|
*
|
|
* @param {Node | undefined} expression expression
|
|
* @returns {this} this
|
|
*/
|
|
setExpression(expression) {
|
|
this.expression = expression;
|
|
return this;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} flags regexp flags
|
|
* @returns {boolean} is valid flags
|
|
*/
|
|
BasicEvaluatedExpression.isValidRegExpFlags = flags => {
|
|
const len = flags.length;
|
|
|
|
if (len === 0) return true;
|
|
if (len > 4) return false;
|
|
|
|
// cspell:word gimy
|
|
let remaining = 0b0000; // bit per RegExp flag: gimy
|
|
|
|
for (let i = 0; i < len; i++)
|
|
switch (flags.charCodeAt(i)) {
|
|
case 103 /* g */:
|
|
if (remaining & 0b1000) return false;
|
|
remaining |= 0b1000;
|
|
break;
|
|
case 105 /* i */:
|
|
if (remaining & 0b0100) return false;
|
|
remaining |= 0b0100;
|
|
break;
|
|
case 109 /* m */:
|
|
if (remaining & 0b0010) return false;
|
|
remaining |= 0b0010;
|
|
break;
|
|
case 121 /* y */:
|
|
if (remaining & 0b0001) return false;
|
|
remaining |= 0b0001;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
module.exports = BasicEvaluatedExpression;
|