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// Copyright 2021 The Tint 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.
package parser_test
import (
"testing"
"dawn.googlesource.com/dawn/tools/src/fileutils"
"dawn.googlesource.com/dawn/tools/src/tint/intrinsic/ast"
"dawn.googlesource.com/dawn/tools/src/tint/intrinsic/parser"
"github.com/google/go-cmp/cmp"
)
var ignoreSource = cmp.FilterPath(func(p cmp.Path) bool {
return p.Last().String() == ".Source"
}, cmp.Ignore())
func TestParser(t *testing.T) {
type test struct {
location string
src string
expect ast.AST
}
for _, test := range []test{
{
fileutils.ThisLine(),
"enum E {}",
ast.AST{
Enums: []ast.EnumDecl{{Name: "E"}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"enum E { A @attr B C }",
ast.AST{
Enums: []ast.EnumDecl{{
Name: "E",
Entries: []ast.EnumEntry{
{Name: "A"},
{
Attributes: ast.Attributes{{
Name: "attr",
Values: nil,
}},
Name: "B",
},
{Name: "C"},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"type T",
ast.AST{
Types: []ast.TypeDecl{{Name: "T"}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"type T<A, B, C>",
ast.AST{
Types: []ast.TypeDecl{{
Name: "T",
TemplateParams: ast.TemplateParams{
{Name: "A"},
{Name: "B"},
{Name: "C"},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"@attr type T",
ast.AST{
Types: []ast.TypeDecl{{
Attributes: ast.Attributes{
{Name: "attr", Values: nil},
},
Name: "T",
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"@attr_a @attr_b type T",
ast.AST{
Types: []ast.TypeDecl{{
Attributes: ast.Attributes{
{Name: "attr_a", Values: nil},
{Name: "attr_b", Values: nil},
},
Name: "T",
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
`@attr("a", "b") type T`, ast.AST{
Types: []ast.TypeDecl{{
Attributes: ast.Attributes{
{Name: "attr", Values: []any{"a", "b"}},
},
Name: "T",
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
`@attr(1, "x", 2.0) type T`, ast.AST{
Types: []ast.TypeDecl{{
Attributes: ast.Attributes{
{Name: "attr", Values: []any{1, "x", 2.0}},
},
Name: "T",
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"match M : A",
ast.AST{
Matchers: []ast.MatcherDecl{{
Name: "M",
Options: ast.MatcherOptions{
Types: ast.TemplatedNames{
{Name: "A"},
},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"match M : A | B",
ast.AST{
Matchers: []ast.MatcherDecl{{
Name: "M",
Options: ast.MatcherOptions{
Types: ast.TemplatedNames{
{Name: "A"},
{Name: "B"},
},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"match M : A.B",
ast.AST{
Matchers: []ast.MatcherDecl{{
Name: "M",
Options: ast.MatcherOptions{
Enums: ast.MemberNames{
{Owner: "A", Member: "B"},
},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"match M : A.B | B.C",
ast.AST{
Matchers: []ast.MatcherDecl{{
Name: "M",
Options: ast.MatcherOptions{
Enums: ast.MemberNames{
{Owner: "A", Member: "B"},
{Owner: "B", Member: "C"},
},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F()",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"@attr fn F()",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
Attributes: ast.Attributes{
{Name: "attr", Values: nil},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F(a)",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F(a: T)",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "T"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F(a, b)",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
{Type: ast.TemplatedName{Name: "b"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F<A : B<C> >()",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
TemplateParams: ast.TemplateParams{
{
Name: "A", Type: ast.TemplatedName{
Name: "B",
TemplateArgs: ast.TemplatedNames{
{Name: "C"},
},
},
},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F<T>(a: X, b: Y<T>)",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
TemplateParams: ast.TemplateParams{
{Name: "T"},
},
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "X"}},
{Name: "b", Type: ast.TemplatedName{
Name: "Y",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F() -> X",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
ReturnType: &ast.TemplatedName{Name: "X"},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"fn F() -> X<T>",
ast.AST{
Builtins: []ast.IntrinsicDecl{{
Kind: ast.Builtin,
Name: "F",
ReturnType: &ast.TemplatedName{
Name: "X",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F()",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"@attr op F()",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
Attributes: ast.Attributes{
{Name: "attr", Values: nil},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F(a)",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F(@blah a)",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
Parameters: ast.Parameters{
{
Attributes: ast.Attributes{{Name: "blah", Values: nil}},
Type: ast.TemplatedName{Name: "a"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F(a: T)",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "T"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F(a, b)",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
{Type: ast.TemplatedName{Name: "b"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F<A : B<C> >()",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
TemplateParams: ast.TemplateParams{
{
Name: "A", Type: ast.TemplatedName{
Name: "B",
TemplateArgs: ast.TemplatedNames{
{Name: "C"},
},
},
},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F<T>(a: X, b: Y<T>)",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
TemplateParams: ast.TemplateParams{
{Name: "T"},
},
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "X"}},
{Name: "b", Type: ast.TemplatedName{
Name: "Y",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F() -> X",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
ReturnType: &ast.TemplatedName{Name: "X"},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"op F() -> X<T>",
ast.AST{
Operators: []ast.IntrinsicDecl{{
Kind: ast.Operator,
Name: "F",
ReturnType: &ast.TemplatedName{
Name: "X",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F()",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"@attr init F()",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
Attributes: ast.Attributes{
{Name: "attr", Values: nil},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F(a)",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F(a: T)",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "T"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F(a, b)",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
{Type: ast.TemplatedName{Name: "b"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F<A : B<C> >()",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
TemplateParams: ast.TemplateParams{
{
Name: "A", Type: ast.TemplatedName{
Name: "B",
TemplateArgs: ast.TemplatedNames{
{Name: "C"},
},
},
},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F<T>(a: X, b: Y<T>)",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
TemplateParams: ast.TemplateParams{
{Name: "T"},
},
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "X"}},
{Name: "b", Type: ast.TemplatedName{
Name: "Y",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F() -> X",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
ReturnType: &ast.TemplatedName{Name: "X"},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"init F() -> X<T>",
ast.AST{
Initializers: []ast.IntrinsicDecl{{
Kind: ast.Initializer,
Name: "F",
ReturnType: &ast.TemplatedName{
Name: "X",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F()",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"@attr conv F()",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
Attributes: ast.Attributes{
{Name: "attr", Values: nil},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F(a)",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F(a: T)",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "T"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F(a, b)",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
Parameters: ast.Parameters{
{Type: ast.TemplatedName{Name: "a"}},
{Type: ast.TemplatedName{Name: "b"}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F<A : B<C> >()",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
TemplateParams: ast.TemplateParams{
{
Name: "A", Type: ast.TemplatedName{
Name: "B",
TemplateArgs: ast.TemplatedNames{
{Name: "C"},
},
},
},
},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F<T>(a: X, b: Y<T>)",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
TemplateParams: ast.TemplateParams{
{Name: "T"},
},
Parameters: ast.Parameters{
{Name: "a", Type: ast.TemplatedName{Name: "X"}},
{Name: "b", Type: ast.TemplatedName{
Name: "Y",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
}},
},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F() -> X",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
ReturnType: &ast.TemplatedName{Name: "X"},
Parameters: ast.Parameters{},
}},
},
}, { ///////////////////////////////////////////////////////////////////
fileutils.ThisLine(),
"conv F() -> X<T>",
ast.AST{
Converters: []ast.IntrinsicDecl{{
Kind: ast.Converter,
Name: "F",
ReturnType: &ast.TemplatedName{
Name: "X",
TemplateArgs: []ast.TemplatedName{{Name: "T"}},
},
Parameters: ast.Parameters{},
}},
}},
} {
got, err := parser.Parse(test.src, "file.txt")
if err != nil {
t.Errorf("\n%v\nWhile parsing:\n%s\nParse() returned error: %v",
test.location, test.src, err)
continue
}
if diff := cmp.Diff(got, &test.expect, ignoreSource); diff != "" {
t.Errorf("\n%v\nWhile parsing:\n%s\n\n%s",
test.location, test.src, diff)
}
}
}
func TestErrors(t *testing.T) {
type test struct {
src string
expect string
}
for _, test := range []test{
{
"£",
"test.txt:1:1: unexpected '£'",
},
{
"123",
"test.txt:1:1 unexpected token 'integer'",
},
{
"@123",
"test.txt:1:2 expected 'ident' for attribute name, got 'integer'",
},
} {
got, err := parser.Parse(test.src, "test.txt")
gotErr := ""
if err != nil {
gotErr = err.Error()
}
if test.expect != gotErr {
t.Errorf(`Parse() returned error "%+v", expected error "%+v"`, gotErr, test.expect)
}
if got != nil {
t.Errorf("Lex() returned non-nil for error")
}
}
}