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or.ts
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or.ts
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import { OrTokenSchema } from '../schema/types';
import {
Token,
TokenFactory,
Semantic,
ComparableToken,
SemanticEncoding,
TokenValidationError,
} from './token';
/**
* @category Error
* @description Error that indicates a failure happening when parsing encoding/executing an OrToken
*/
export class OrValidationError extends TokenValidationError {
name = 'OrValidationError';
constructor(public value: any, public token: OrToken, message: string) {
super(value, token, message);
}
}
export class OrToken extends ComparableToken {
static prim: 'or' = 'or' as const;
constructor(
protected val: { prim: string; args: any[]; annots: any[] },
protected idx: number,
protected fac: TokenFactory
) {
super(val, idx, fac);
}
public Encode(args: any[]): any {
const label = args[args.length - 1];
const leftToken = this.createToken(this.val.args[0], this.idx);
let keyCount = 1;
if (leftToken instanceof OrToken) {
keyCount = Object.keys(leftToken.ExtractSchema()).length;
}
const rightToken = this.createToken(this.val.args[1], this.idx + keyCount);
if (String(leftToken.annot()) === String(label) && !(leftToken instanceof OrToken)) {
args.pop();
return { prim: 'Left', args: [leftToken.Encode(args)] };
} else if (String(rightToken.annot()) === String(label) && !(rightToken instanceof OrToken)) {
args.pop();
return { prim: 'Right', args: [rightToken.Encode(args)] };
} else {
if (leftToken instanceof OrToken) {
const val = leftToken.Encode(args);
if (val) {
return { prim: 'Left', args: [val] };
}
}
if (rightToken instanceof OrToken) {
const val = rightToken.Encode(args);
if (val) {
return { prim: 'Right', args: [val] };
}
}
return null;
}
}
public ExtractSignature(): any {
const leftToken = this.createToken(this.val.args[0], this.idx);
let keyCount = 1;
if (leftToken instanceof OrToken) {
keyCount = Object.keys(leftToken.ExtractSchema()).length;
}
const rightToken = this.createToken(this.val.args[1], this.idx + keyCount);
const newSig = [];
if (leftToken instanceof OrToken) {
newSig.push(...leftToken.ExtractSignature());
} else {
for (const sig of leftToken.ExtractSignature()) {
newSig.push([leftToken.annot(), ...sig]);
}
}
if (rightToken instanceof OrToken) {
newSig.push(...rightToken.ExtractSignature());
} else {
for (const sig of rightToken.ExtractSignature()) {
newSig.push([rightToken.annot(), ...sig]);
}
}
return newSig;
}
/**
* @throws {@link OrValidationError}
*/
public EncodeObject(args: any, semantic?: SemanticEncoding): any {
this.validateJavascriptObject(args);
const label = Object.keys(args)[0];
const leftToken = this.createToken(this.val.args[0], this.idx);
let keyCount = 1;
if (leftToken instanceof OrToken) {
keyCount = Object.keys(leftToken.ExtractSchema()).length;
}
const rightToken = this.createToken(this.val.args[1], this.idx + keyCount);
if (String(leftToken.annot()) === String(label) && !(leftToken instanceof OrToken)) {
return { prim: 'Left', args: [leftToken.EncodeObject(args[label], semantic)] };
} else if (String(rightToken.annot()) === String(label) && !(rightToken instanceof OrToken)) {
return { prim: 'Right', args: [rightToken.EncodeObject(args[label], semantic)] };
} else {
if (leftToken instanceof OrToken) {
const val = leftToken.EncodeObject(args, semantic);
if (val) {
return { prim: 'Left', args: [val] };
}
}
if (rightToken instanceof OrToken) {
const val = rightToken.EncodeObject(args, semantic);
if (val) {
return { prim: 'Right', args: [val] };
}
}
return null;
}
}
/**
* @throws {@link OrValidationError}
*/
private validateJavascriptObject(args: any): asserts args is Record<string, any> {
if (
typeof args !== 'object' ||
Array.isArray(args) ||
args === null ||
Object.keys(args).length !== 1
) {
throw new OrValidationError(
args,
this,
`EncodeObject expects an object with a single key but got: ${JSON.stringify(args)}`
);
}
}
/**
* @throws {@link OrValidationError}
*/
public Execute(val: any, semantics?: Semantic): any {
const leftToken = this.createToken(this.val.args[0], this.idx);
let keyCount = 1;
if (leftToken instanceof OrToken) {
keyCount = Object.keys(leftToken.ExtractSchema()).length;
}
const rightToken = this.createToken(this.val.args[1], this.idx + keyCount);
if (val.prim === 'Right') {
if (rightToken instanceof OrToken) {
return rightToken.Execute(val.args[0], semantics);
} else {
return {
[rightToken.annot()]: rightToken.Execute(val.args[0], semantics),
};
}
} else if (val.prim === 'Left') {
if (leftToken instanceof OrToken) {
return leftToken.Execute(val.args[0], semantics);
}
return {
[leftToken.annot()]: leftToken.Execute(val.args[0], semantics),
};
} else {
throw new OrValidationError(
val,
this,
`Was expecting Left or Right prim but got: ${JSON.stringify(val.prim)}`
);
}
}
private traversal(
getLeftValue: (token: Token) => any,
getRightValue: (token: Token) => any,
concat: (left: any, right: any) => any
) {
const leftToken = this.createToken(this.val.args[0], this.idx);
let keyCount = 1;
let leftValue;
if (leftToken instanceof OrToken) {
leftValue = getLeftValue(leftToken);
keyCount = Object.keys(leftToken.ExtractSchema()).length;
} else {
leftValue = { [leftToken.annot()]: getLeftValue(leftToken) };
}
const rightToken = this.createToken(this.val.args[1], this.idx + keyCount);
let rightValue;
if (rightToken instanceof OrToken) {
rightValue = getRightValue(rightToken);
} else {
rightValue = { [rightToken.annot()]: getRightValue(rightToken) };
}
const res = concat(leftValue, rightValue);
return res;
}
/**
* @deprecated ExtractSchema has been deprecated in favor of generateSchema
*
*/
public ExtractSchema(): any {
return this.traversal(
(leftToken) => leftToken.ExtractSchema(),
(rightToken) => rightToken.ExtractSchema(),
(leftValue, rightValue) => ({
...leftValue,
...rightValue,
})
);
}
generateSchema(): OrTokenSchema {
return {
__michelsonType: OrToken.prim,
schema: this.traversal(
(leftToken) => {
if (leftToken instanceof OrToken) {
return leftToken.generateSchema().schema;
} else {
return leftToken.generateSchema();
}
},
(rightToken) => {
if (rightToken instanceof OrToken) {
return rightToken.generateSchema().schema;
} else {
return rightToken.generateSchema();
}
},
(leftValue, rightValue) => ({
...leftValue,
...rightValue,
})
),
};
}
private findToken(label: any): Token | null {
const leftToken = this.createToken(this.val.args[0], this.idx);
let keyCount = 1;
if (leftToken instanceof OrToken) {
keyCount = Object.keys(leftToken.ExtractSchema()).length;
}
const rightToken = this.createToken(this.val.args[1], this.idx + keyCount);
if (
String(leftToken.annot()) === String(label) &&
!(leftToken instanceof OrToken) &&
leftToken instanceof ComparableToken
) {
return leftToken;
} else if (
String(rightToken.annot()) === String(label) &&
!(rightToken instanceof OrToken) &&
rightToken instanceof ComparableToken
) {
return rightToken;
} else {
if (leftToken instanceof OrToken) {
const tok = leftToken.findToken(label);
if (tok) {
return tok;
}
}
if (rightToken instanceof OrToken) {
const tok = rightToken.findToken(label);
if (tok) {
return tok;
}
}
return null;
}
}
compare(val1: any, val2: any): any {
const labelVal1 = Object.keys(val1)[0];
const labelVal2 = Object.keys(val2)[0];
if (labelVal1 === labelVal2) {
const token = this.findToken(labelVal1);
if (token instanceof ComparableToken) {
return token.compare(val1[labelVal1], val2[labelVal1]);
}
} else {
const encoded1 = JSON.stringify(this.EncodeObject(val1));
const encoded2 = JSON.stringify(this.EncodeObject(val2));
return encoded1 < encoded2 ? -1 : 1;
}
}
public ToKey(val: any) {
return this.Execute(val);
}
public ToBigMapKey(val: any) {
return {
key: this.EncodeObject(val),
type: this.typeWithoutAnnotations(),
};
}
findAndReturnTokens(tokenToFind: string, tokens: Token[]) {
if (OrToken.prim === tokenToFind) {
tokens.push(this);
}
this.traversal(
(leftToken) => leftToken.findAndReturnTokens(tokenToFind, tokens),
(rightToken) => rightToken.findAndReturnTokens(tokenToFind, tokens),
(leftValue, rightValue) => ({
...leftValue,
...rightValue,
})
);
return tokens;
}
}