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Add enum name lookup method to Java/C# enums

Browse Source 
Tested: on Linux for Java and C#

Bug: 15781151
Change-Id: I7cb97bcc01d986cac2b24aaf7cb29521ddaa2f6b
This commit is contained in:
Gabriel Martinez
2014-09-18 12:28:10 -07:00
parent d6ed127cf4
commit 048638a971
10 changed files with 75 additions and 7 deletions
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38
src/idl_gen_general.cpp
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@@ -73,7 +73,7 @@ LanguageParameters language_parameters[] = {
"String",
"boolean ",
" {\n",
" public static final ",
" final ",
" extends ",
"package ",
";",
@@ -89,7 +89,7 @@ LanguageParameters language_parameters[] = {
"string",
"bool ",
"\n{\n",
" public static ",
" readonly ",
" : ",
"namespace ",
"\n{",
@@ -164,11 +164,45 @@ static void GenEnum(const LanguageParameters &lang, EnumDef &enum_def,
++it) {
auto &ev = **it;
GenComment(ev.doc_comment, code_ptr, " ");
code += " public static";
code += lang.const_decl;
code += GenTypeBasic(lang, enum_def.underlying_type);
code += " " + ev.name + " = ";
code += NumToString(ev.value) + ";\n";
}
// Generate a generate string table for enum values.
// Problem is, if values are very sparse that could generate really big
// tables. Ideally in that case we generate a map lookup instead, but for
// the moment we simply don't output a table at all.
auto range = enum_def.vals.vec.back()->value -
enum_def.vals.vec.front()->value + 1;
// Average distance between values above which we consider a table
// "too sparse". Change at will.
static const int kMaxSparseness = 5;
if (range / static_cast<int64_t>(enum_def.vals.vec.size()) < kMaxSparseness) {
code += "\n private static";
code += lang.const_decl;
code += lang.string_type;
code += "[] names = { ";
auto val = enum_def.vals.vec.front()->value;
for (auto it = enum_def.vals.vec.begin();
it != enum_def.vals.vec.end();
++it) {
while (val++ != (*it)->value) code += "\"\", ";
code += "\"" + (*it)->name + "\", ";
}
code += "};\n\n";
code += " public static ";
code += lang.string_type;
code += " " + MakeCamel("name", lang.first_camel_upper);
code += "(int e) { return names[e";
if (enum_def.vals.vec.front()->value)
code += " - " + enum_def.vals.vec.front()->name;
code += "]; }\n";
}
// Close the class
code += "};\n\n";
}