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package org.shedlang.compiler.backends;
import org.shedlang.compiler.backends.paths.PartialTargetPath;
import org.shedlang.compiler.backends.paths.TargetDir;
import org.shedlang.compiler.backends.targets.ShedTarget;
import org.shedlang.compiler.config.ProfileConfig;
import org.shedlang.compiler.config.ProjectConfig;
import org.shedlang.compiler.patio.PatioCompilationUnit;
import org.shedlang.compiler.patio.PatioFunctionDeclaration;
import org.shedlang.compiler.shid.ShidNamespace;
import org.shedlang.compiler.typechecker.TypeInfos;
import org.shedlang.compiler.types.NamespaceName;
import java.io.IOException;
import java.nio.file.Files;
import java.util.List;
import java.util.Optional;
public class PatioNativeCHeadersBackend implements Backend {
public static final BackendFactory FACTORY = new BackendFactory() {
@Override
public String name() {
return "patio-native-c-headers";
}
@Override
public Optional<Backend> backendForTarget(ShedTarget target) {
if (target == ShedTarget.PATIO_NATIVE_C_HEADERS) {
return Optional.of(PatioNativeCHeadersBackend.INSTANCE);
} else {
return Optional.empty();
}
}
};
public static final PatioNativeCHeadersBackend INSTANCE = new PatioNativeCHeadersBackend();
private PatioNativeCHeadersBackend() {
}
@Override
public String targetName() {
return "patio-native-c-headers";
}
public void compile(
ProjectConfig config,
ProfileConfig profileConfig,
List<ShidNamespace> namespaces,
TypeInfos typeInfos,
TargetDir targetDir
) throws IOException, InterruptedException {
PatioBackends.compile(
config,
profileConfig,
namespaces,
typeInfos,
new PatioToNativeHeaders(targetDir)
);
}
private static class PatioToNativeHeaders implements PatioBackends.PatioToTarget {
private final TargetDir targetDir;
public PatioToNativeHeaders(TargetDir targetDir) {
this.targetDir = targetDir;
}
@Override
public PatioBackends.PatioToTarget namespace(
NamespaceName namespaceName,
PatioCompilationUnit patioCompilationUnit
) throws IOException, InterruptedException {
var macroName = String.format(
"SHED_NAMESPACES__%s__H",
String.join("__", namespaceName.parts())
);
serializeToDisk(
targetDir.namespace(namespaceName),
macroName,
patioCompilationUnit
);
return this;
}
@Override
public void bin(
String binName,
PatioCompilationUnit patioCompilationUnit,
String mainFunctionName,
ProfileConfig profileConfig
) throws IOException, InterruptedException {
var macroName = String.format("SHED_BINS__%s__H", binName);
serializeToDisk(
targetDir.bin(binName),
macroName,
patioCompilationUnit
);
}
private void serializeToDisk(
PartialTargetPath partialTargetPath,
String macroName,
PatioCompilationUnit patioCompilationUnit
) throws IOException {
var empty = true;
var builder = new StringBuilder();
// TODO: path to header file? Use angle brackets?
builder.append(String.format("#ifndef %s\n", macroName));
builder.append(String.format("#define %s\n\n", macroName));
builder.append("#include \"shed/shed.h\"\n\n");
for (var element : patioCompilationUnit.elements()) {
if (element instanceof PatioFunctionDeclaration patioFunctionDeclaration) {
// TODO: pass this information through rather than having to inspect the string?
// TODO: ignore dependency projects?
if (patioFunctionDeclaration.name().startsWith("shed__runtime__namespace__")) {
empty = false;
builder.append("ShedObject ");
builder.append(patioFunctionDeclaration.name());
builder.append("(ShedClosurePointer closurePointer");
for (var param : patioFunctionDeclaration.params()) {
builder.append(", ShedObject ");
builder.append(param.name());
}
builder.append(");\n");
}
}
}
builder.append("\n#endif\n");
if (empty) {
return;
}
var compilationUnitString = builder.toString();
var path = partialTargetPath.withExtension(".h");
Files.createDirectories(path.getParent());
Files.writeString(path, compilationUnitString);
}
}
}
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