125 lines
5.1 KiB
TypeScript
125 lines
5.1 KiB
TypeScript
import { encode, stringify } from "@preserves/core";
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import * as M from "./meta";
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import { CompilerOptions, ModuleContext } from "./compiler/context";
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import { Formatter, block, seq, braces } from "./compiler/block";
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import { typeForDefinition } from "./compiler/gentype";
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import { converterForDefinition } from "./compiler/genconverter";
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import { renderTypeWithConversionMixins } from "./compiler/rendertype";
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import { genConstructor } from "./compiler/genctor";
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import { unconverterForDefinition } from "./compiler/genunconverter";
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import { sourceCodeFor } from "./compiler/value";
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import { fromSchema } from "./meta";
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export function compile(
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env: M.Environment,
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modulePath: M.ModulePath,
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schema: M.Schema,
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options: CompilerOptions = {},
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): string {
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const mod = new ModuleContext(env, modulePath, schema, options);
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mod.definePreamble(`let __schema: _.Value | null = null;`);
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mod.definePreamble(seq(`export function _schema() `, block(
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seq(`if (__schema === null) `, block(
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`__schema = _.decode<_.GenericEmbedded>(_.Bytes.fromHex("${encode(fromSchema(schema)).toHex()}"))`)),
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`return __schema`)));
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const embeddedName = schema.embeddedType;
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if (embeddedName._variant !== 'false') {
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mod.defineType(seq(`export type _embedded = `, mod.embeddedType, `;`));
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}
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for (const [name, def] of schema.definitions) {
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const t = typeForDefinition(mod.resolver(), def);
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const nameStr = stringify(name);
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const resultTypeItem = seq(nameStr, mod.genericArgsFor(t));
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mod.defineType(seq(`export type ${nameStr}`, mod.genericParametersFor(t),
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` = `, renderTypeWithConversionMixins(mod, t), `;`));
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if (t.kind === 'union') {
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mod.defineFunctions(nameStr, _ctx =>
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[seq(`export namespace ${nameStr} `, block(
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... Array.from(t.variants).flatMap(([vn, vt]) =>
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genConstructor(mod, nameStr, vn, vn, vt, t, resultTypeItem))
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))]);
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} else {
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mod.defineFunctions(nameStr, _ctx =>
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genConstructor(mod, nameStr, nameStr, void 0, t, t, resultTypeItem));
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}
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}
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for (const [name0, def] of schema.definitions) {
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const t = typeForDefinition(mod.resolver(), def);
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const name = name0 as symbol;
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const nameStr = name0.description!;
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const resultTypeItem = seq(nameStr, mod.genericArgsFor(t));
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mod.defineFunctions(nameStr, ctx =>
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[seq(`export function as${name.description!}`, mod.genericParameters(),
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`(v: _.Value<_embedded>): `, resultTypeItem, ` `,
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ctx.block(() => [
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seq(`let result = to${name.description!}(v)`),
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seq(`if (result === void 0) `,
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`throw new TypeError(\`Invalid ${name.description!}: \${_.stringify(v)}\`)`),
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seq(`return result`)]))]);
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mod.defineFunctions(nameStr, ctx =>
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[seq(`export function to${name.description!}`, mod.genericParameters(),
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`(v: _.Value<_embedded>): undefined | `, resultTypeItem, ` `,
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ctx.block(() => [seq(`let result: undefined | `, resultTypeItem),
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... converterForDefinition(ctx, def, `v`, `result`),
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seq(`return result`)])),
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(t.kind === 'union')
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? seq(`export namespace ${M.jsId(name.description!)} `, block(
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seq(`export const __from_preserve__ = to${name.description!}`)))
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: seq(`${M.jsId(name.description!)}.__from_preserve__ = to${name.description!};`)]);
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mod.defineFunctions(nameStr, ctx =>
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[seq(`export function from${name.description!}`, mod.genericParameters(),
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`(_v: `, name.description!, mod.genericArgsFor(t), `): _.Value<_embedded> `,
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ctx.block(() => unconverterForDefinition(ctx, def, `_v`)))]);
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}
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mod.definePreamble(
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seq(`export const _imports = `, braces(... Array.from(mod.imports.values()).map(
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([modulePath, identifier, _path, expr]) =>
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seq(stringify(M.formatModulePath(modulePath)), ': ', identifier, expr)))));
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const f = new Formatter();
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f.write(`import * as _ from ${JSON.stringify(options.preservesModule ?? '@preserves/core')};\n`);
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mod.imports.forEach(([_modulePath, identifier, path, _expr]) => {
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f.write(`import * as ${identifier} from ${JSON.stringify(path)};\n`);
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});
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f.newline();
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const sortedLiterals = Array.from(mod.literals);
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sortedLiterals.sort((a, b) => a[1] < b[1] ? -1 : a[1] === b[1] ? 0 : 1);
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for (const [lit, varname] of sortedLiterals) {
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f.write(seq(`export const ${varname} = `, sourceCodeFor(lit), `;\n`));
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}
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f.newline();
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mod.preamble.forEach(i => {
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f.write(i);
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f.newline();
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f.newline();
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});
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f.newline();
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mod.typedefs.forEach(t => {
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f.write(t);
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f.newline();
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f.newline();
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});
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f.newline();
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mod.functiondefs.forEach(p => {
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f.write(p);
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f.newline();
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f.newline();
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});
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return f.toString();
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}
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