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Add vectorNumElements attribute to Builder for simpler vector creation. (#6328)

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* Add vectorNumElements attribute to Builder for simpler vector creation.

This adds a default to EndVector which should simplify its use.

* Update tutorial to reflect new default arg in Python EndVector.

* Remove optional argument to Python EndVector.

* Add generated files.

* Unset Builder.vectorNumElems when not in use.
This commit is contained in:
Richard A Hofer
2020-12-14 15:00:28 -05:00
committed by GitHub
parent 8ab7c7e2c8
commit f8b203c9c4
7 changed files with 61 additions and 64 deletions
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16
src/idl_gen_python.cpp
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@@ -1178,9 +1178,7 @@ class PythonGenerator : public BaseGenerator {
field_instance_name + "))):";
code_prefix +=
GenIndents(4) + "self." + field_instance_name + "[i].Pack(builder)";
code_prefix += GenIndents(3) + field_instance_name +
" = builder.EndVector(len(self." + field_instance_name +
"))";
code_prefix += GenIndents(3) + field_instance_name + " = builder.EndVector()";
} else {
// If the vector is a struct vector, we need to first build accessor for
// each struct element.
@@ -1197,9 +1195,7 @@ class PythonGenerator : public BaseGenerator {
field_instance_name + "))):";
code_prefix += GenIndents(4) + "builder.PrependUOffsetTRelative" + "(" +
field_instance_name + "list[i])";
code_prefix += GenIndents(3) + field_instance_name +
" = builder.EndVector(len(self." + field_instance_name +
"))";
code_prefix += GenIndents(3) + field_instance_name + " = builder.EndVector()";
}
// Adds the field into the struct.
@@ -1273,9 +1269,7 @@ class PythonGenerator : public BaseGenerator {
field_instance_name + "[i]))";
GenPackForScalarVectorFieldHelper(struct_def, field, code_prefix_ptr, 3);
code_prefix += "(" + MakeLowerCamel(field) + "list[i])";
code_prefix += GenIndents(3) + field_instance_name +
" = builder.EndVector(len(self." + field_instance_name +
"))";
code_prefix += GenIndents(3) + field_instance_name + " = builder.EndVector()";
return;
}
@@ -1287,9 +1281,7 @@ class PythonGenerator : public BaseGenerator {
code_prefix += GenIndents(3) + "else:";
GenPackForScalarVectorFieldHelper(struct_def, field, code_prefix_ptr, 4);
code_prefix += "(self." + field_instance_name + "[i])";
code_prefix += GenIndents(4) + field_instance_name +
" = builder.EndVector(len(self." + field_instance_name +
"))";
code_prefix += GenIndents(4) + field_instance_name + " = builder.EndVector()";
}
void GenPackForStructField(const StructDef &struct_def, const FieldDef &field,