//* Copyright 2021 The Dawn Authors
//*
//* Licensed under the Apache License, Version 2.0 (the "License");
//* you may not use this file except in compliance with the License.
//* You may obtain a copy of the License at
//*
//*     http://www.apache.org/licenses/LICENSE-2.0
//*
//* Unless required by applicable law or agreed to in writing, software
//* distributed under the License is distributed on an "AS IS" BASIS,
//* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//* See the License for the specific language governing permissions and
//* limitations under the License.

#include "dawn_native/webgpu_absl_format_autogen.h"

{% set skip_types = ["texture view", "instance", "surface"] %}

{% for type in by_category["object"] %}
    {% if type.name.canonical_case() not in skip_types %}
        #include "dawn_native/{{type.name.CamelCase()}}.h"
    {% endif %}
{% endfor %}

namespace dawn_native {

    //
    // Objects
    //

    // TODO(dawn:563) Detect the type of ObjectBase references and use the right formatter.
    absl::FormatConvertResult<absl::FormatConversionCharSet::kString>
    AbslFormatConvert(const ObjectBase* value,
                        const absl::FormatConversionSpec& spec,
                        absl::FormatSink* s) {
        s->Append("[Object");
        const std::string& label = value->GetLabel();
        if (!label.empty()) {
            s->Append(absl::StrFormat(" \"%s\"", label));
        }
        s->Append("]");
        return {true};
    }

    {% for type in by_category["object"] %}
        {% if type.name.canonical_case() not in skip_types %}
            absl::FormatConvertResult<absl::FormatConversionCharSet::kString>
            AbslFormatConvert(const {{as_frontendType(type)}} value,
                                const absl::FormatConversionSpec& spec,
                                absl::FormatSink* s) {
                s->Append("[{{as_cppType(type.name)}}");
                const std::string& label = value->GetLabel();
                if (!label.empty()) {
                    s->Append(absl::StrFormat(" \"%s\"", label));
                }
                s->Append("]");
                return {true};
            }
        {% endif %}
    {% endfor %}

    // Special case for textureViews, since frequently the texture will be the
    // thing that's labeled.
    absl::FormatConvertResult<absl::FormatConversionCharSet::kString>
    AbslFormatConvert(const TextureViewBase* value,
                        const absl::FormatConversionSpec& spec,
                        absl::FormatSink* s) {
        s->Append("[TextureView");
        const std::string& label = value->GetLabel();
        if (!label.empty()) {
            s->Append(absl::StrFormat(" \"%s\"", label));
        }
        const std::string& textureLabel = value->GetTexture()->GetLabel();
        if (!textureLabel.empty()) {
            s->Append(absl::StrFormat(" of Texture \"%s\"", textureLabel));
        }
        s->Append("]");
        return {true};
    }

    //
    // Descriptors
    //

    {% for type in by_category["structure"] %}
        {% for member in type.members %}
            {% if member.name.canonical_case() == "label" %}
                absl::FormatConvertResult<absl::FormatConversionCharSet::kString>
                AbslFormatConvert(const {{as_cppType(type.name)}}* value,
                                    const absl::FormatConversionSpec& spec,
                                    absl::FormatSink* s) {
                    s->Append("[{{as_cppType(type.name)}}");
                    if (value->label != nullptr) {
                        s->Append(absl::StrFormat(" \"%s\"", value->label));
                    }
                    s->Append("]");
                    return {true};
                }
            {% endif %}
        {% endfor %}
    {% endfor %}

}  // namespace dawn_native

namespace wgpu {

    //
    // Enums
    //

    {% for type in by_category["enum"] %}
        absl::FormatConvertResult<absl::FormatConversionCharSet::kString>
        AbslFormatConvert({{as_cppType(type.name)}} value,
                            const absl::FormatConversionSpec& spec,
                            absl::FormatSink* s) {
            s->Append("{{as_cppType(type.name)}}::");
            switch (value) {
            {% for value in type.values %}
                case {{as_cppType(type.name)}}::{{as_cppEnum(value.name)}}:
                s->Append("{{as_cppEnum(value.name)}}");
                break;
            {% endfor %}
                default:
                s->Append(absl::StrFormat("%x", static_cast<typename std::underlying_type<{{as_cppType(type.name)}}>::type>(value)));
            }
            return {true};
        }
    {% endfor %}

    //
    // Bitmasks
    //

    {% for type in by_category["bitmask"] %}
        absl::FormatConvertResult<absl::FormatConversionCharSet::kString>
        AbslFormatConvert({{as_cppType(type.name)}} value,
                            const absl::FormatConversionSpec& spec,
                            absl::FormatSink* s) {
            s->Append("{{as_cppType(type.name)}}::");
            if (!static_cast<bool>(value)) {
                {% for value in type.values if value.value == 0 %}
                    // 0 is often explicitly declared as None.
                    s->Append("{{as_cppEnum(value.name)}}");
                {% else %}
                    s->Append(absl::StrFormat("{{as_cppType(type.name)}}::%x", 0));
                {% endfor %}
                return {true};
            }

            bool moreThanOneBit = !HasZeroOrOneBits(value);
            if (moreThanOneBit) {
                s->Append("(");
            }

            bool first = true;
            {% for value in type.values if value.value != 0 %}
                if (value & {{as_cppType(type.name)}}::{{as_cppEnum(value.name)}}) {
                    if (!first) {
                        s->Append("|");
                    }
                    first = false;
                    s->Append("{{as_cppEnum(value.name)}}");
                    value &= ~{{as_cppType(type.name)}}::{{as_cppEnum(value.name)}};
                }
            {% endfor %}

            if (static_cast<bool>(value)) {
                if (!first) {
                    s->Append("|");
                }
                s->Append(absl::StrFormat("{{as_cppType(type.name)}}::%x", static_cast<typename std::underlying_type<{{as_cppType(type.name)}}>::type>(value)));
            }

            if (moreThanOneBit) {
                s->Append(")");
            }

            return {true};
        }
    {% endfor %}

}  // namespace wgpu