diff options
author | JohnnyB <jboero@users.noreply.github.com> | 2024-01-30 12:15:05 -0600 |
---|---|---|
committer | GitHub <noreply@github.com> | 2024-01-30 20:15:05 +0200 |
commit | 4003be0e5feef320f3707786f22722b73cff9356 (patch) | |
tree | 5da952c3a524db134f7ec8fefc534a880c28f927 /examples/server/json-schema-to-grammar.mjs.hpp | |
parent | fea4fd4ba7f6b754ac795387b275e1a014a77bde (diff) |
server : change deps.sh xxd files to string literals (#5221)
* Changed ugly xxd to literals.
HPP files are much more readable as multiline literals rather than hex arrays.
* Dashes in literal variable names.
Replace . and - with _ in file names -> variable names.
* Comment on removing xxd.
XXD-> string literals
* XXD to string literals.
Replaced these unreadable headers with string literal versions using new deps.sh.
Diffstat (limited to 'examples/server/json-schema-to-grammar.mjs.hpp')
-rw-r--r-- | examples/server/json-schema-to-grammar.mjs.hpp | 424 |
1 files changed, 114 insertions, 310 deletions
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp index 0a05c369..83b22d67 100644 --- a/examples/server/json-schema-to-grammar.mjs.hpp +++ b/examples/server/json-schema-to-grammar.mjs.hpp @@ -1,311 +1,115 @@ -unsigned char json_schema_to_grammar_mjs[] = { - 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x20, 0x53, 0x50, 0x41, 0x43, 0x45, 0x5f, - 0x52, 0x55, 0x4c, 0x45, 0x20, 0x3d, 0x20, 0x27, 0x22, 0x20, 0x22, 0x3f, - 0x27, 0x3b, 0x0a, 0x0a, 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x20, 0x50, 0x52, - 0x49, 0x4d, 0x49, 0x54, 0x49, 0x56, 0x45, 0x5f, 0x52, 0x55, 0x4c, 0x45, - 0x53, 0x20, 0x3d, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x62, 0x6f, 0x6f, 0x6c, - 0x65, 0x61, 0x6e, 0x3a, 0x20, 0x27, 0x28, 0x22, 0x74, 0x72, 0x75, 0x65, - 0x22, 0x20, 0x7c, 0x20, 0x22, 0x66, 0x61, 0x6c, 0x73, 0x65, 0x22, 0x29, - 0x20, 0x73, 0x70, 0x61, 0x63, 0x65, 0x27, 0x2c, 0x0a, 0x20, 0x20, 0x6e, - 0x75, 0x6d, 0x62, 0x65, 0x72, 0x3a, 0x20, 0x27, 0x28, 0x22, 0x2d, 0x22, - 0x3f, 0x20, 0x28, 0x5b, 0x30, 0x2d, 0x39, 0x5d, 0x20, 0x7c, 0x20, 0x5b, - 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0x20, 0x24, 0x7b, 0x72, 0x75, 0x6c, 0x65, 0x7d, 0x5c, 0x6e, 0x60, 0x3b, - 0x0a, 0x20, 0x20, 0x20, 0x20, 0x7d, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x20, - 0x20, 0x72, 0x65, 0x74, 0x75, 0x72, 0x6e, 0x20, 0x67, 0x72, 0x61, 0x6d, - 0x6d, 0x61, 0x72, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a +const char json_schema_to_grammar_mjs[] = R"LITERAL( +const SPACE_RULE = '" "?'; + +const PRIMITIVE_RULES = { + boolean: '("true" | "false") space', + number: '("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space', + integer: '("-"? ([0-9] | [1-9] [0-9]*)) space', + string: ` "\\"" ( + [^"\\\\] | + "\\\\" (["\\\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F]) + )* "\\"" space`, + null: '"null" space', }; -unsigned int json_schema_to_grammar_mjs_len = 3695; + +const INVALID_RULE_CHARS_RE = /[^\dA-Za-z-]+/g; +const GRAMMAR_LITERAL_ESCAPE_RE = /[\n\r"]/g; +const GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"'}; + +export class SchemaConverter { + constructor(propOrder) { + this._propOrder = propOrder || {}; + this._rules = new Map(); + this._rules.set('space', SPACE_RULE); + } + + _formatLiteral(literal) { + const escaped = JSON.stringify(literal).replace( + GRAMMAR_LITERAL_ESCAPE_RE, + m => GRAMMAR_LITERAL_ESCAPES[m] + ); + return `"${escaped}"`; + } + + _addRule(name, rule) { + let escName = name.replace(INVALID_RULE_CHARS_RE, '-'); + let key = escName; + + if (this._rules.has(escName)) { + if (this._rules.get(escName) === rule) { + return key; + } + + let i = 0; + while (this._rules.has(`${escName}${i}`)) { + i += 1; + } + key = `${escName}${i}`; + } + + this._rules.set(key, rule); + return key; + } + + visit(schema, name) { + const schemaType = schema.type; + const ruleName = name || 'root'; + + if (schema.oneOf || schema.anyOf) { + const rule = (schema.oneOf || schema.anyOf).map((altSchema, i) => + this.visit(altSchema, `${name}${name ? "-" : ""}${i}`) + ).join(' | '); + + return this._addRule(ruleName, rule); + } else if ('const' in schema) { + return this._addRule(ruleName, this._formatLiteral(schema.const)); + } else if ('enum' in schema) { + const rule = schema.enum.map(v => this._formatLiteral(v)).join(' | '); + return this._addRule(ruleName, rule); + } else if (schemaType === 'object' && 'properties' in schema) { + // TODO: `required` keyword (from python implementation) + const propOrder = this._propOrder; + const propPairs = Object.entries(schema.properties).sort((a, b) => { + // sort by position in prop_order (if specified) then by key + const orderA = typeof propOrder[a[0]] === 'number' ? propOrder[a[0]] : Infinity; + const orderB = typeof propOrder[b[0]] === 'number' ? propOrder[b[0]] : Infinity; + return orderA - orderB || a[0].localeCompare(b[0]); + }); + + let rule = '"{" space'; + propPairs.forEach(([propName, propSchema], i) => { + const propRuleName = this.visit(propSchema, `${name}${name ? "-" : ""}${propName}`); + if (i > 0) { + rule += ' "," space'; + } + rule += ` ${this._formatLiteral(propName)} space ":" space ${propRuleName}`; + }); + rule += ' "}" space'; + + return this._addRule(ruleName, rule); + } else if (schemaType === 'array' && 'items' in schema) { + // TODO `prefixItems` keyword (from python implementation) + const itemRuleName = this.visit(schema.items, `${name}${name ? "-" : ""}item`); + const rule = `"[" space (${itemRuleName} ("," space ${itemRuleName})*)? "]" space`; + return this._addRule(ruleName, rule); + } else { + if (!PRIMITIVE_RULES[schemaType]) { + throw new Error(`Unrecognized schema: ${JSON.stringify(schema)}`); + } + return this._addRule( + ruleName === 'root' ? 'root' : schemaType, + PRIMITIVE_RULES[schemaType] + ); + } + } + + formatGrammar() { + let grammar = ''; + this._rules.forEach((rule, name) => { + grammar += `${name} ::= ${rule}\n`; + }); + return grammar; + } +} +)LITERAL"; +unsigned int json_schema_to_grammar_mjs_len = sizeof(json_schema_to_grammar_mjs); |