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package org.zwobble.hobgoblin.compiler.config;
import org.zwobble.hobgoblin.compiler.output.generators.Generator;
import org.zwobble.hobgoblin.compiler.output.generators.errors.UnknownGeneratorError;
import org.zwobble.hobgoblin.compiler.output.generators.javapreciselymatchers.JavaPreciselyMatchersGenerator;
import org.zwobble.hobgoblin.compiler.output.generators.javatransient0.JavaTransient0Generator;
import org.zwobble.hobgoblin.compiler.output.generators.javatypes.JavaTypesGenerator;
import org.zwobble.hobgoblin.compiler.output.generators.rusttransient0.RustTransient0Generator;
import org.zwobble.hobgoblin.compiler.output.generators.rusttypes.RustTypesGenerator;
import org.zwobble.hobgoblin.compiler.sources.FileFragmentSource;
import org.zwobble.json5.reader.Json5ObjectReader;
import org.zwobble.sourcetext.SourceText;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
public record ProjectConfig(
List<OutputConfig> output
) {
public static ProjectConfig read(Path projectRoot) throws IOException {
var configPath = projectRoot.resolve("hobgoblin.json5");
var contents = Files.readString(configPath);
var sourceText = SourceText.fromString(configPath.toString(), contents);
return fromSourceText(projectRoot, sourceText);
}
private static ProjectConfig fromSourceText(Path projectRoot, SourceText sourceText) {
return fromJson5(projectRoot, Json5ObjectReader.parse(sourceText));
}
private static ProjectConfig fromJson5(Path projectRoot, Json5ObjectReader document) {
var outputsJson = document.getObject("outputs");
var generatorsJson = outputsJson.getArrayOfObjects("generators");
var langsJson = outputsJson.getObjectOrNone("langs");
var outputs = new ArrayList<OutputConfig>();
for (var generatorJson : generatorsJson) {
var generatorName = generatorJson.getString("generator");
var output = switch (generatorName.value()) {
case JavaTypesGenerator.NAME ->
JavaTypesGenerator.parseGeneratorConfig(projectRoot, generatorJson, langsJson);
case JavaPreciselyMatchersGenerator.NAME ->
JavaPreciselyMatchersGenerator.parseGeneratorConfig(projectRoot, generatorJson, langsJson);
case JavaTransient0Generator.NAME ->
JavaTransient0Generator.parseGeneratorConfig(projectRoot, generatorJson, langsJson);
case RustTypesGenerator.NAME ->
RustTypesGenerator.parseGeneratorConfig(projectRoot, generatorJson, langsJson);
case RustTransient0Generator.NAME ->
RustTransient0Generator.parseGeneratorConfig(projectRoot, generatorJson, langsJson);
default ->
throw new UnknownGeneratorError(
generatorName.value(),
new FileFragmentSource(generatorName.sourceRange())
);
};
outputs.add(output);
}
return new ProjectConfig(outputs);
}
public List<Generator> createGenerators() {
return this.output.stream()
.map(output -> output.createGenerator())
.toList();
}
}
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