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Implement mutators for Go

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This commit is contained in:
Muhammed Thanish
2016-07-20 22:58:22 +05:30
parent ffc0d6209a
commit 53e9606ea2
9 changed files with 631 additions and 2 deletions
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46
src/idl_gen_go.cpp
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@@ -439,7 +439,7 @@ static void GenReceiver(const StructDef &struct_def, std::string *code_ptr) {
code += "func (rcv *" + struct_def.name + ")";
}
// Generate a struct field, conditioned on its child type(s).
// Generate a struct field getter, conditioned on its child type(s).
static void GenStructAccessor(const StructDef &struct_def,
const FieldDef &field,
std::string *code_ptr) {
@@ -486,6 +486,48 @@ static void GenStructAccessor(const StructDef &struct_def,
}
}
// Mutate the value of a struct's scalar.
static void MutateScalarFieldOfStruct(const StructDef &struct_def,
const FieldDef &field,
std::string *code_ptr) {
std::string &code = *code_ptr;
std::string type = MakeCamel(GenTypeBasic(field.value.type));
std::string setter = "rcv._tab.Mutate" + type;
GenReceiver(struct_def, code_ptr);
code += " Mutate" + MakeCamel(field.name);
code += "(n " + TypeName(field) + ") bool { return " + setter;
code += "(rcv._tab.Pos + flatbuffers.UOffsetT(";
code += NumToString(field.value.offset) + "), n) }\n\n";
}
// Mutate the value of a table's scalar.
static void MutateScalarFieldOfTable(const StructDef &struct_def,
const FieldDef &field,
std::string *code_ptr) {
std::string &code = *code_ptr;
std::string type = MakeCamel(GenTypeBasic(field.value.type));
std::string setter = "rcv._tab.Mutate" + type + "Slot";
GenReceiver(struct_def, code_ptr);
code += " Mutate" + MakeCamel(field.name);
code += "(n " + TypeName(field) + ") bool {\n\treturn ";
code += setter + "(" + NumToString(field.value.offset) + ", n)\n";
code += "}\n\n";
}
// Generate a struct field setter, conditioned on its child type(s).
static void GenStructMutator(const StructDef &struct_def,
const FieldDef &field,
std::string *code_ptr) {
GenComment(field.doc_comment, code_ptr, nullptr, "");
if (IsScalar(field.value.type.base_type)) {
if (struct_def.fixed) {
MutateScalarFieldOfStruct(struct_def, field, code_ptr);
} else {
MutateScalarFieldOfTable(struct_def, field, code_ptr);
}
}
}
// Generate table constructors, conditioned on its members' types.
static void GenTableBuilders(const StructDef &struct_def,
std::string *code_ptr) {
@@ -530,6 +572,7 @@ static void GenStruct(const StructDef &struct_def,
if (field.deprecated) continue;
GenStructAccessor(struct_def, field, code_ptr);
GenStructMutator(struct_def, field, code_ptr);
}
if (struct_def.fixed) {
@@ -681,4 +724,3 @@ bool GenerateGo(const Parser &parser, const std::string &path,
}
} // namespace flatbuffers