1 | "use strict";
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2 | Object.defineProperty(exports, "__esModule", { value: true });
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3 | const types_1 = require("./types");
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4 | const __1 = require("..");
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5 | const codegen_1 = require("../codegen");
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6 | const ref_error_1 = require("../ref_error");
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7 | const names_1 = require("../names");
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8 | const code_1 = require("../../vocabularies/code");
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9 | const ref_1 = require("../../vocabularies/jtd/ref");
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10 | const type_1 = require("../../vocabularies/jtd/type");
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11 | const parseJson_1 = require("../../runtime/parseJson");
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12 | const util_1 = require("../util");
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13 | const timestamp_1 = require("../../runtime/timestamp");
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14 | const genParse = {
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15 | elements: parseElements,
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16 | values: parseValues,
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17 | discriminator: parseDiscriminator,
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18 | properties: parseProperties,
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19 | optionalProperties: parseProperties,
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20 | enum: parseEnum,
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21 | type: parseType,
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22 | ref: parseRef,
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23 | };
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24 | function compileParser(sch, definitions) {
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25 | const _sch = __1.getCompilingSchema.call(this, sch);
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26 | if (_sch)
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27 | return _sch;
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28 | const { es5, lines } = this.opts.code;
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29 | const { ownProperties } = this.opts;
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30 | const gen = new codegen_1.CodeGen(this.scope, { es5, lines, ownProperties });
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31 | const parseName = gen.scopeName("parse");
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32 | const cxt = {
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33 | self: this,
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34 | gen,
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35 | schema: sch.schema,
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36 | schemaEnv: sch,
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37 | definitions,
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38 | data: names_1.default.data,
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39 | parseName,
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40 | char: gen.name("c"),
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41 | };
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42 | let sourceCode;
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43 | try {
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44 | this._compilations.add(sch);
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45 | sch.parseName = parseName;
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46 | parserFunction(cxt);
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47 | gen.optimize(this.opts.code.optimize);
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48 | const parseFuncCode = gen.toString();
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49 | sourceCode = `${gen.scopeRefs(names_1.default.scope)}return ${parseFuncCode}`;
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50 | const makeParse = new Function(`${names_1.default.scope}`, sourceCode);
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51 | const parse = makeParse(this.scope.get());
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52 | this.scope.value(parseName, { ref: parse });
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53 | sch.parse = parse;
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54 | }
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55 | catch (e) {
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56 | if (sourceCode)
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57 | this.logger.error("Error compiling parser, function code:", sourceCode);
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58 | delete sch.parse;
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59 | delete sch.parseName;
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60 | throw e;
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61 | }
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62 | finally {
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63 | this._compilations.delete(sch);
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64 | }
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65 | return sch;
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66 | }
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67 | exports.default = compileParser;
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68 | const undef = codegen_1._ `undefined`;
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69 | function parserFunction(cxt) {
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70 | const { gen, parseName, char } = cxt;
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71 | gen.func(parseName, codegen_1._ `${names_1.default.json}, ${names_1.default.jsonPos}, ${names_1.default.jsonPart}`, false, () => {
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72 | gen.let(names_1.default.data);
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73 | gen.let(char);
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74 | gen.assign(codegen_1._ `${parseName}.message`, undef);
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75 | gen.assign(codegen_1._ `${parseName}.position`, undef);
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76 | gen.assign(names_1.default.jsonPos, codegen_1._ `${names_1.default.jsonPos} || 0`);
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77 | gen.const(names_1.default.jsonLen, codegen_1._ `${names_1.default.json}.length`);
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78 | parseCode(cxt);
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79 | skipWhitespace(cxt);
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80 | gen.if(names_1.default.jsonPart, () => {
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81 | gen.assign(codegen_1._ `${parseName}.position`, names_1.default.jsonPos);
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82 | gen.return(names_1.default.data);
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83 | });
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84 | gen.if(codegen_1._ `${names_1.default.jsonPos} === ${names_1.default.jsonLen}`, () => gen.return(names_1.default.data));
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85 | jsonSyntaxError(cxt);
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86 | });
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87 | }
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88 | function parseCode(cxt) {
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89 | let form;
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90 | for (const key of types_1.jtdForms) {
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91 | if (key in cxt.schema) {
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92 | form = key;
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93 | break;
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94 | }
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95 | }
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96 | if (form)
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97 | parseNullable(cxt, genParse[form]);
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98 | else
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99 | parseEmpty(cxt);
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100 | }
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101 | const parseBoolean = parseBooleanToken(true, parseBooleanToken(false, jsonSyntaxError));
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102 | function parseNullable(cxt, parseForm) {
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103 | const { gen, schema, data } = cxt;
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104 | if (!schema.nullable)
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105 | return parseForm(cxt);
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106 | tryParseToken(cxt, "null", parseForm, () => gen.assign(data, null));
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107 | }
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108 | function parseElements(cxt) {
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109 | const { gen, schema, data } = cxt;
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110 | parseToken(cxt, "[");
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111 | const ix = gen.let("i", 0);
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112 | gen.assign(data, codegen_1._ `[]`);
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113 | parseItems(cxt, "]", () => {
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114 | const el = gen.let("el");
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115 | parseCode({ ...cxt, schema: schema.elements, data: el });
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116 | gen.assign(codegen_1._ `${data}[${ix}++]`, el);
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117 | });
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118 | }
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119 | function parseValues(cxt) {
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120 | const { gen, schema, data } = cxt;
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121 | parseToken(cxt, "{");
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122 | gen.assign(data, codegen_1._ `{}`);
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123 | parseItems(cxt, "}", () => parseKeyValue(cxt, schema.values));
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124 | }
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125 | function parseItems(cxt, endToken, block) {
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126 | tryParseItems(cxt, endToken, block);
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127 | parseToken(cxt, endToken);
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128 | }
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129 | function tryParseItems(cxt, endToken, block) {
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130 | const { gen } = cxt;
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131 | gen.for(codegen_1._ `;${names_1.default.jsonPos}<${names_1.default.jsonLen} && ${jsonSlice(1)}!==${endToken};`, () => {
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132 | block();
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133 | tryParseToken(cxt, ",", () => gen.break(), hasItem);
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134 | });
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135 | function hasItem() {
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136 | tryParseToken(cxt, endToken, () => { }, jsonSyntaxError);
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137 | }
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138 | }
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139 | function parseKeyValue(cxt, schema) {
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140 | const { gen } = cxt;
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141 | const key = gen.let("key");
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142 | parseString({ ...cxt, data: key });
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143 | parseToken(cxt, ":");
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144 | parsePropertyValue(cxt, key, schema);
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145 | }
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146 | function parseDiscriminator(cxt) {
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147 | const { gen, data, schema } = cxt;
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148 | const { discriminator, mapping } = schema;
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149 | parseToken(cxt, "{");
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150 | gen.assign(data, codegen_1._ `{}`);
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151 | const startPos = gen.const("pos", names_1.default.jsonPos);
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152 | const value = gen.let("value");
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153 | const tag = gen.let("tag");
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154 | tryParseItems(cxt, "}", () => {
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155 | const key = gen.let("key");
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156 | parseString({ ...cxt, data: key });
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157 | parseToken(cxt, ":");
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158 | gen.if(codegen_1._ `${key} === ${discriminator}`, () => {
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159 | parseString({ ...cxt, data: tag });
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160 | gen.assign(codegen_1._ `${data}[${key}]`, tag);
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161 | gen.break();
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162 | }, () => parseEmpty({ ...cxt, data: value }) // can be discarded/skipped
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163 | );
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164 | });
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165 | gen.assign(names_1.default.jsonPos, startPos);
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166 | gen.if(codegen_1._ `${tag} === undefined`);
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167 | parsingError(cxt, codegen_1.str `discriminator tag not found`);
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168 | for (const tagValue in mapping) {
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169 | gen.elseIf(codegen_1._ `${tag} === ${tagValue}`);
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170 | parseSchemaProperties({ ...cxt, schema: mapping[tagValue] }, discriminator);
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171 | }
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172 | gen.else();
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173 | parsingError(cxt, codegen_1.str `discriminator value not in schema`);
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174 | gen.endIf();
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175 | }
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176 | function parseProperties(cxt) {
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177 | const { gen, data } = cxt;
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178 | parseToken(cxt, "{");
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179 | gen.assign(data, codegen_1._ `{}`);
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180 | parseSchemaProperties(cxt);
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181 | }
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182 | function parseSchemaProperties(cxt, discriminator) {
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183 | const { gen, schema, data } = cxt;
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184 | const { properties, optionalProperties, additionalProperties } = schema;
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185 | parseItems(cxt, "}", () => {
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186 | const key = gen.let("key");
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187 | parseString({ ...cxt, data: key });
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188 | parseToken(cxt, ":");
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189 | gen.if(false);
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190 | parseDefinedProperty(cxt, key, properties);
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191 | parseDefinedProperty(cxt, key, optionalProperties);
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192 | if (discriminator) {
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193 | gen.elseIf(codegen_1._ `${key} === ${discriminator}`);
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194 | const tag = gen.let("tag");
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195 | parseString({ ...cxt, data: tag }); // can be discarded, it is already assigned
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196 | }
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197 | gen.else();
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198 | if (additionalProperties) {
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199 | parseEmpty({ ...cxt, data: codegen_1._ `${data}[${key}]` });
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200 | }
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201 | else {
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202 | parsingError(cxt, codegen_1.str `property ${key} not allowed`);
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203 | }
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204 | gen.endIf();
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205 | });
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206 | if (properties) {
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207 | const hasProp = code_1.hasPropFunc(gen);
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208 | const allProps = codegen_1.and(...Object.keys(properties).map((p) => codegen_1._ `${hasProp}.call(${data}, ${p})`));
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209 | gen.if(codegen_1.not(allProps), () => parsingError(cxt, codegen_1.str `missing required properties`));
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210 | }
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211 | }
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212 | function parseDefinedProperty(cxt, key, schemas = {}) {
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213 | const { gen } = cxt;
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214 | for (const prop in schemas) {
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215 | gen.elseIf(codegen_1._ `${key} === ${prop}`);
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216 | parsePropertyValue(cxt, key, schemas[prop]);
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217 | }
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218 | }
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219 | function parsePropertyValue(cxt, key, schema) {
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220 | parseCode({ ...cxt, schema, data: codegen_1._ `${cxt.data}[${key}]` });
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221 | }
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222 | function parseType(cxt) {
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223 | const { gen, schema, data, self } = cxt;
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224 | switch (schema.type) {
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225 | case "boolean":
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226 | parseBoolean(cxt);
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227 | break;
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228 | case "string":
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229 | parseString(cxt);
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230 | break;
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231 | case "timestamp": {
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232 | parseString(cxt);
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233 | const vts = util_1.useFunc(gen, timestamp_1.default);
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234 | const { allowDate, parseDate } = self.opts;
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235 | const notValid = allowDate ? codegen_1._ `!${vts}(${data}, true)` : codegen_1._ `!${vts}(${data})`;
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236 | const fail = parseDate
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237 | ? codegen_1.or(notValid, codegen_1._ `(${data} = new Date(${data}), false)`, codegen_1._ `isNaN(${data}.valueOf())`)
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238 | : notValid;
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239 | gen.if(fail, () => parsingError(cxt, codegen_1.str `invalid timestamp`));
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240 | break;
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241 | }
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242 | case "float32":
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243 | case "float64":
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244 | parseNumber(cxt);
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245 | break;
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246 | default: {
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247 | const t = schema.type;
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248 | if (!self.opts.int32range && (t === "int32" || t === "uint32")) {
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249 | parseNumber(cxt, 16); // 2 ** 53 - max safe integer
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250 | if (t === "uint32") {
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251 | gen.if(codegen_1._ `${data} < 0`, () => parsingError(cxt, codegen_1.str `integer out of range`));
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252 | }
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253 | }
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254 | else {
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255 | const [min, max, maxDigits] = type_1.intRange[t];
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256 | parseNumber(cxt, maxDigits);
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257 | gen.if(codegen_1._ `${data} < ${min} || ${data} > ${max}`, () => parsingError(cxt, codegen_1.str `integer out of range`));
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258 | }
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259 | }
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260 | }
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261 | }
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262 | function parseString(cxt) {
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263 | parseToken(cxt, '"');
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264 | parseWith(cxt, parseJson_1.parseJsonString);
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265 | }
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266 | function parseEnum(cxt) {
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267 | const { gen, data, schema } = cxt;
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268 | const enumSch = schema.enum;
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269 | parseToken(cxt, '"');
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270 | // TODO loopEnum
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271 | gen.if(false);
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272 | for (const value of enumSch) {
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273 | const valueStr = JSON.stringify(value).slice(1); // remove starting quote
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274 | gen.elseIf(codegen_1._ `${jsonSlice(valueStr.length)} === ${valueStr}`);
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275 | gen.assign(data, codegen_1.str `${value}`);
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276 | gen.add(names_1.default.jsonPos, valueStr.length);
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277 | }
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278 | gen.else();
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279 | jsonSyntaxError(cxt);
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280 | gen.endIf();
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281 | }
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282 | function parseNumber(cxt, maxDigits) {
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283 | const { gen } = cxt;
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284 | skipWhitespace(cxt);
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285 | gen.if(codegen_1._ `"-0123456789".indexOf(${jsonSlice(1)}) < 0`, () => jsonSyntaxError(cxt), () => parseWith(cxt, parseJson_1.parseJsonNumber, maxDigits));
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286 | }
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287 | function parseBooleanToken(bool, fail) {
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288 | return (cxt) => {
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289 | const { gen, data } = cxt;
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290 | tryParseToken(cxt, `${bool}`, () => fail(cxt), () => gen.assign(data, bool));
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291 | };
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292 | }
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293 | function parseRef(cxt) {
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294 | const { gen, self, definitions, schema, schemaEnv } = cxt;
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295 | const { ref } = schema;
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296 | const refSchema = definitions[ref];
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297 | if (!refSchema)
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298 | throw new ref_error_1.default("", ref, `No definition ${ref}`);
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299 | if (!ref_1.hasRef(refSchema))
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300 | return parseCode({ ...cxt, schema: refSchema });
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301 | const { root } = schemaEnv;
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302 | const sch = compileParser.call(self, new __1.SchemaEnv({ schema: refSchema, root }), definitions);
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303 | partialParse(cxt, getParser(gen, sch), true);
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304 | }
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305 | function getParser(gen, sch) {
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306 | return sch.parse
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307 | ? gen.scopeValue("parse", { ref: sch.parse })
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308 | : codegen_1._ `${gen.scopeValue("wrapper", { ref: sch })}.parse`;
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309 | }
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310 | function parseEmpty(cxt) {
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311 | parseWith(cxt, parseJson_1.parseJson);
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312 | }
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313 | function parseWith(cxt, parseFunc, args) {
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314 | partialParse(cxt, util_1.useFunc(cxt.gen, parseFunc), args);
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315 | }
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316 | function partialParse(cxt, parseFunc, args) {
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317 | const { gen, data } = cxt;
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318 | gen.assign(data, codegen_1._ `${parseFunc}(${names_1.default.json}, ${names_1.default.jsonPos}${args ? codegen_1._ `, ${args}` : codegen_1.nil})`);
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319 | gen.assign(names_1.default.jsonPos, codegen_1._ `${parseFunc}.position`);
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320 | gen.if(codegen_1._ `${data} === undefined`, () => parsingError(cxt, codegen_1._ `${parseFunc}.message`));
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321 | }
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322 | function parseToken(cxt, tok) {
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323 | tryParseToken(cxt, tok, jsonSyntaxError);
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324 | }
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325 | function tryParseToken(cxt, tok, fail, success) {
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326 | const { gen } = cxt;
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327 | const n = tok.length;
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328 | skipWhitespace(cxt);
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329 | gen.if(codegen_1._ `${jsonSlice(n)} === ${tok}`, () => {
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330 | gen.add(names_1.default.jsonPos, n);
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331 | success === null || success === void 0 ? void 0 : success(cxt);
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332 | }, () => fail(cxt));
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333 | }
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334 | function skipWhitespace({ gen, char: c }) {
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335 | gen.code(codegen_1._ `while((${c}=${names_1.default.json}[${names_1.default.jsonPos}],${c}===" "||${c}==="\\n"||${c}==="\\r"||${c}==="\\t"))${names_1.default.jsonPos}++;`);
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336 | }
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337 | function jsonSlice(len) {
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338 | return len === 1
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339 | ? codegen_1._ `${names_1.default.json}[${names_1.default.jsonPos}]`
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340 | : codegen_1._ `${names_1.default.json}.slice(${names_1.default.jsonPos}, ${names_1.default.jsonPos}+${len})`;
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341 | }
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342 | function jsonSyntaxError(cxt) {
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343 | parsingError(cxt, codegen_1._ `"unexpected token " + ${names_1.default.json}[${names_1.default.jsonPos}]`);
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344 | }
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345 | function parsingError({ gen, parseName }, msg) {
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346 | gen.assign(codegen_1._ `${parseName}.message`, msg);
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347 | gen.assign(codegen_1._ `${parseName}.position`, names_1.default.jsonPos);
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348 | gen.return(undef);
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349 | }
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350 | //# sourceMappingURL=parse.js.map |
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