PackageCompilationUnit.ceylon
import ceylon.ast.core {
PackageCompilationUnit
}
import com.redhat.ceylon.compiler.typechecker.tree {
Tree {
JCompilationUnit=CompilationUnit
}
}
import ceylon.interop.java {
CeylonIterable
}
"Converts a RedHat AST [[CompilationUnit|JCompilationUnit]] to a `ceylon.ast` [[PackageCompilationUnit]]."
throws (`class AssertionError`, "If the compilation unit contains module descriptors, declarations, or not exactly one package descriptor")
shared PackageCompilationUnit packageCompilationUnitToCeylon(JCompilationUnit packageCompilationUnit) {
"Must not have declarations or module descriptors"
assert (packageCompilationUnit.declarations.empty,
packageCompilationUnit.moduleDescriptors.empty);
"Must have exactly one package descriptor"
assert (packageCompilationUnit.packageDescriptors.size() == 1);
value packageDescriptor = packageCompilationUnit.packageDescriptors.get(0);
return PackageCompilationUnit(packageDescriptorToCeylon(packageDescriptor), CeylonIterable(packageCompilationUnit.importList.imports).collect(importToCeylon));
}
"Compiles the given [[code]] for a Package Compilation Unit
into a [[PackageCompilationUnit]] using the Ceylon compiler
(more specifically, the rule for a `compilationUnit`)."
shared PackageCompilationUnit? compilePackageCompilationUnit(String code) {
if (exists jCompilationUnit = createParser(code).compilationUnit(),
jCompilationUnit.packageDescriptors.size() == 1,
jCompilationUnit.declarations.empty,
jCompilationUnit.moduleDescriptors.empty) {
return packageCompilationUnitToCeylon(jCompilationUnit);
} else {
return null;
}
}