CasperSecurity
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const types_1 = require("./types");
const __1 = require("..");
const codegen_1 = require("../codegen");
const ref_error_1 = require("../ref_error");
const names_1 = require("../names");
const code_1 = require("../../vocabularies/code");
const ref_1 = require("../../vocabularies/jtd/ref");
const type_1 = require("../../vocabularies/jtd/type");
const parseJson_1 = require("../../runtime/parseJson");
const util_1 = require("../util");
const timestamp_1 = require("../../runtime/timestamp");
const genParse = {
elements: parseElements,
values: parseValues,
discriminator: parseDiscriminator,
properties: parseProperties,
optionalProperties: parseProperties,
enum: parseEnum,
type: parseType,
ref: parseRef,
};
function compileParser(sch, definitions) {
const _sch = __1.getCompilingSchema.call(this, sch);
if (_sch)
return _sch;
const { es5, lines } = this.opts.code;
const { ownProperties } = this.opts;
const gen = new codegen_1.CodeGen(this.scope, { es5, lines, ownProperties });
const parseName = gen.scopeName("parse");
const cxt = {
self: this,
gen,
schema: sch.schema,
schemaEnv: sch,
definitions,
data: names_1.default.data,
parseName,
char: gen.name("c"),
};
let sourceCode;
try {
this._compilations.add(sch);
sch.parseName = parseName;
parserFunction(cxt);
gen.optimize(this.opts.code.optimize);
const parseFuncCode = gen.toString();
sourceCode = `${gen.scopeRefs(names_1.default.scope)}return ${parseFuncCode}`;
const makeParse = new Function(`${names_1.default.scope}`, sourceCode);
const parse = makeParse(this.scope.get());
this.scope.value(parseName, { ref: parse });
sch.parse = parse;
}
catch (e) {
if (sourceCode)
this.logger.error("Error compiling parser, function code:", sourceCode);
delete sch.parse;
delete sch.parseName;
throw e;
}
finally {
this._compilations.delete(sch);
}
return sch;
}
exports.default = compileParser;
const undef = (0, codegen_1._) `undefined`;
function parserFunction(cxt) {
const { gen, parseName, char } = cxt;
gen.func(parseName, (0, codegen_1._) `${names_1.default.json}, ${names_1.default.jsonPos}, ${names_1.default.jsonPart}`, false, () => {
gen.let(names_1.default.data);
gen.let(char);
gen.assign((0, codegen_1._) `${parseName}.message`, undef);
gen.assign((0, codegen_1._) `${parseName}.position`, undef);
gen.assign(names_1.default.jsonPos, (0, codegen_1._) `${names_1.default.jsonPos} || 0`);
gen.const(names_1.default.jsonLen, (0, codegen_1._) `${names_1.default.json}.length`);
parseCode(cxt);
skipWhitespace(cxt);
gen.if(names_1.default.jsonPart, () => {
gen.assign((0, codegen_1._) `${parseName}.position`, names_1.default.jsonPos);
gen.return(names_1.default.data);
});
gen.if((0, codegen_1._) `${names_1.default.jsonPos} === ${names_1.default.jsonLen}`, () => gen.return(names_1.default.data));
jsonSyntaxError(cxt);
});
}
function parseCode(cxt) {
let form;
for (const key of types_1.jtdForms) {
if (key in cxt.schema) {
form = key;
break;
}
}
if (form)
parseNullable(cxt, genParse[form]);
else
parseEmpty(cxt);
}
const parseBoolean = parseBooleanToken(true, parseBooleanToken(false, jsonSyntaxError));
function parseNullable(cxt, parseForm) {
const { gen, schema, data } = cxt;
if (!schema.nullable)
return parseForm(cxt);
tryParseToken(cxt, "null", parseForm, () => gen.assign(data, null));
}
function parseElements(cxt) {
const { gen, schema, data } = cxt;
parseToken(cxt, "[");
const ix = gen.let("i", 0);
gen.assign(data, (0, codegen_1._) `[]`);
parseItems(cxt, "]", () => {
const el = gen.let("el");
parseCode({ ...cxt, schema: schema.elements, data: el });
gen.assign((0, codegen_1._) `${data}[${ix}++]`, el);
});
}
function parseValues(cxt) {
const { gen, schema, data } = cxt;
parseToken(cxt, "{");
gen.assign(data, (0, codegen_1._) `{}`);
parseItems(cxt, "}", () => parseKeyValue(cxt, schema.values));
}
function parseItems(cxt, endToken, block) {
tryParseItems(cxt, endToken, block);
parseToken(cxt, endToken);
}
function tryParseItems(cxt, endToken, block) {
const { gen } = cxt;
gen.for((0, codegen_1._) `;${names_1.default.jsonPos}<${names_1.default.jsonLen} && ${jsonSlice(1)}!==${endToken};`, () => {
block();
tryParseToken(cxt, ",", () => gen.break(), hasItem);
});
function hasItem() {
tryParseToken(cxt, endToken, () => { }, jsonSyntaxError);
}
}
function parseKeyValue(cxt, schema) {
const { gen } = cxt;
const key = gen.let("key");
parseString({ ...cxt, data: key });
parseToken(cxt, ":");
parsePropertyValue(cxt, key, schema);
}
function parseDiscriminator(cxt) {
const { gen, data, schema } = cxt;
const { discriminator, mapping } = schema;
parseToken(cxt, "{");
gen.assign(data, (0, codegen_1._) `{}`);
const startPos = gen.const("pos", names_1.default.jsonPos);
const value = gen.let("value");
const tag = gen.let("tag");
tryParseItems(cxt, "}", () => {
const key = gen.let("key");
parseString({ ...cxt, data: key });
parseToken(cxt, ":");
gen.if((0, codegen_1._) `${key} === ${discriminator}`, () => {
parseString({ ...cxt, data: tag });
gen.assign((0, codegen_1._) `${data}[${key}]`, tag);
gen.break();
}, () => parseEmpty({ ...cxt, data: value }) // can be discarded/skipped
);
});
gen.assign(names_1.default.jsonPos, startPos);
gen.if((0, codegen_1._) `${tag} === undefined`);
parsingError(cxt, (0, codegen_1.str) `discriminator tag not found`);
for (const tagValue in mapping) {
gen.elseIf((0, codegen_1._) `${tag} === ${tagValue}`);
parseSchemaProperties({ ...cxt, schema: mapping[tagValue] }, discriminator);
}
gen.else();
parsingError(cxt, (0, codegen_1.str) `discriminator value not in schema`);
gen.endIf();
}
function parseProperties(cxt) {
const { gen, data } = cxt;
parseToken(cxt, "{");
gen.assign(data, (0, codegen_1._) `{}`);
parseSchemaProperties(cxt);
}
function parseSchemaProperties(cxt, discriminator) {
const { gen, schema, data } = cxt;
const { properties, optionalProperties, additionalProperties } = schema;
parseItems(cxt, "}", () => {
const key = gen.let("key");
parseString({ ...cxt, data: key });
parseToken(cxt, ":");
gen.if(false);
parseDefinedProperty(cxt, key, properties);
parseDefinedProperty(cxt, key, optionalProperties);
if (discriminator) {
gen.elseIf((0, codegen_1._) `${key} === ${discriminator}`);
const tag = gen.let("tag");
parseString({ ...cxt, data: tag }); // can be discarded, it is already assigned
}
gen.else();
if (additionalProperties) {
parseEmpty({ ...cxt, data: (0, codegen_1._) `${data}[${key}]` });
}
else {
parsingError(cxt, (0, codegen_1.str) `property ${key} not allowed`);
}
gen.endIf();
});
if (properties) {
const hasProp = (0, code_1.hasPropFunc)(gen);
const allProps = (0, codegen_1.and)(...Object.keys(properties).map((p) => (0, codegen_1._) `${hasProp}.call(${data}, ${p})`));
gen.if((0, codegen_1.not)(allProps), () => parsingError(cxt, (0, codegen_1.str) `missing required properties`));
}
}
function parseDefinedProperty(cxt, key, schemas = {}) {
const { gen } = cxt;
for (const prop in schemas) {
gen.elseIf((0, codegen_1._) `${key} === ${prop}`);
parsePropertyValue(cxt, key, schemas[prop]);
}
}
function parsePropertyValue(cxt, key, schema) {
parseCode({ ...cxt, schema, data: (0, codegen_1._) `${cxt.data}[${key}]` });
}
function parseType(cxt) {
const { gen, schema, data, self } = cxt;
switch (schema.type) {
case "boolean":
parseBoolean(cxt);
break;
case "string":
parseString(cxt);
break;
case "timestamp": {
parseString(cxt);
const vts = (0, util_1.useFunc)(gen, timestamp_1.default);
const { allowDate, parseDate } = self.opts;
const notValid = allowDate ? (0, codegen_1._) `!${vts}(${data}, true)` : (0, codegen_1._) `!${vts}(${data})`;
const fail = parseDate
? (0, codegen_1.or)(notValid, (0, codegen_1._) `(${data} = new Date(${data}), false)`, (0, codegen_1._) `isNaN(${data}.valueOf())`)
: notValid;
gen.if(fail, () => parsingError(cxt, (0, codegen_1.str) `invalid timestamp`));
break;
}
case "float32":
case "float64":
parseNumber(cxt);
break;
default: {
const t = schema.type;
if (!self.opts.int32range && (t === "int32" || t === "uint32")) {
parseNumber(cxt, 16); // 2 ** 53 - max safe integer
if (t === "uint32") {
gen.if((0, codegen_1._) `${data} < 0`, () => parsingError(cxt, (0, codegen_1.str) `integer out of range`));
}
}
else {
const [min, max, maxDigits] = type_1.intRange[t];
parseNumber(cxt, maxDigits);
gen.if((0, codegen_1._) `${data} < ${min} || ${data} > ${max}`, () => parsingError(cxt, (0, codegen_1.str) `integer out of range`));
}
}
}
}
function parseString(cxt) {
parseToken(cxt, '"');
parseWith(cxt, parseJson_1.parseJsonString);
}
function parseEnum(cxt) {
const { gen, data, schema } = cxt;
const enumSch = schema.enum;
parseToken(cxt, '"');
// TODO loopEnum
gen.if(false);
for (const value of enumSch) {
const valueStr = JSON.stringify(value).slice(1); // remove starting quote
gen.elseIf((0, codegen_1._) `${jsonSlice(valueStr.length)} === ${valueStr}`);
gen.assign(data, (0, codegen_1.str) `${value}`);
gen.add(names_1.default.jsonPos, valueStr.length);
}
gen.else();
jsonSyntaxError(cxt);
gen.endIf();
}
function parseNumber(cxt, maxDigits) {
const { gen } = cxt;
skipWhitespace(cxt);
gen.if((0, codegen_1._) `"-0123456789".indexOf(${jsonSlice(1)}) < 0`, () => jsonSyntaxError(cxt), () => parseWith(cxt, parseJson_1.parseJsonNumber, maxDigits));
}
function parseBooleanToken(bool, fail) {
return (cxt) => {
const { gen, data } = cxt;
tryParseToken(cxt, `${bool}`, () => fail(cxt), () => gen.assign(data, bool));
};
}
function parseRef(cxt) {
const { gen, self, definitions, schema, schemaEnv } = cxt;
const { ref } = schema;
const refSchema = definitions[ref];
if (!refSchema)
throw new ref_error_1.default("", ref, `No definition ${ref}`);
if (!(0, ref_1.hasRef)(refSchema))
return parseCode({ ...cxt, schema: refSchema });
const { root } = schemaEnv;
const sch = compileParser.call(self, new __1.SchemaEnv({ schema: refSchema, root }), definitions);
partialParse(cxt, getParser(gen, sch), true);
}
function getParser(gen, sch) {
return sch.parse
? gen.scopeValue("parse", { ref: sch.parse })
: (0, codegen_1._) `${gen.scopeValue("wrapper", { ref: sch })}.parse`;
}
function parseEmpty(cxt) {
parseWith(cxt, parseJson_1.parseJson);
}
function parseWith(cxt, parseFunc, args) {
partialParse(cxt, (0, util_1.useFunc)(cxt.gen, parseFunc), args);
}
function partialParse(cxt, parseFunc, args) {
const { gen, data } = cxt;
gen.assign(data, (0, codegen_1._) `${parseFunc}(${names_1.default.json}, ${names_1.default.jsonPos}${args ? (0, codegen_1._) `, ${args}` : codegen_1.nil})`);
gen.assign(names_1.default.jsonPos, (0, codegen_1._) `${parseFunc}.position`);
gen.if((0, codegen_1._) `${data} === undefined`, () => parsingError(cxt, (0, codegen_1._) `${parseFunc}.message`));
}
function parseToken(cxt, tok) {
tryParseToken(cxt, tok, jsonSyntaxError);
}
function tryParseToken(cxt, tok, fail, success) {
const { gen } = cxt;
const n = tok.length;
skipWhitespace(cxt);
gen.if((0, codegen_1._) `${jsonSlice(n)} === ${tok}`, () => {
gen.add(names_1.default.jsonPos, n);
success === null || success === void 0 ? void 0 : success(cxt);
}, () => fail(cxt));
}
function skipWhitespace({ gen, char: c }) {
gen.code((0, codegen_1._) `while((${c}=${names_1.default.json}[${names_1.default.jsonPos}],${c}===" "||${c}==="\\n"||${c}==="\\r"||${c}==="\\t"))${names_1.default.jsonPos}++;`);
}
function jsonSlice(len) {
return len === 1
? (0, codegen_1._) `${names_1.default.json}[${names_1.default.jsonPos}]`
: (0, codegen_1._) `${names_1.default.json}.slice(${names_1.default.jsonPos}, ${names_1.default.jsonPos}+${len})`;
}
function jsonSyntaxError(cxt) {
parsingError(cxt, (0, codegen_1._) `"unexpected token " + ${names_1.default.json}[${names_1.default.jsonPos}]`);
}
function parsingError({ gen, parseName }, msg) {
gen.assign((0, codegen_1._) `${parseName}.message`, msg);
gen.assign((0, codegen_1._) `${parseName}.position`, names_1.default.jsonPos);
gen.return(undef);
}
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