2020-03-16 13:39:44 +00:00
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// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/ast/if_statement.h"
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2020-07-25 14:33:50 +00:00
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#include "src/ast/discard_statement.h"
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#include "src/ast/identifier_expression.h"
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#include "src/ast/test_helper.h"
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namespace tint {
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namespace ast {
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namespace {
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using IfStatementTest = TestHelper;
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TEST_F(IfStatementTest, Creation) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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2020-12-07 20:11:24 +00:00
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IfStatement stmt(Source{Source::Location{20, 2}}, cond, body,
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ElseStatementList{});
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auto src = stmt.source();
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EXPECT_EQ(src.range.begin.line, 20u);
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EXPECT_EQ(src.range.begin.column, 2u);
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}
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TEST_F(IfStatementTest, IsIf) {
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IfStatement stmt(Source{}, nullptr, create<BlockStatement>(Source{}),
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ElseStatementList{});
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EXPECT_TRUE(stmt.Is<IfStatement>());
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}
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TEST_F(IfStatementTest, IsValid) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body, ElseStatementList{});
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EXPECT_TRUE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_WithElseStatements) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body,
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{
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create<ElseStatement>(
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Source{},
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create<IdentifierExpression>(
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Source{}, mod.RegisterSymbol("Ident"), "Ident"),
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create<BlockStatement>(Source{})),
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create<ElseStatement>(Source{}, nullptr,
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create<BlockStatement>(Source{})),
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});
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EXPECT_TRUE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_MissingCondition) {
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, nullptr, body, ElseStatementList{});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_InvalidCondition) {
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auto* cond =
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create<IdentifierExpression>(Source{}, mod.RegisterSymbol(""), "");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body, ElseStatementList{});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_NullBodyStatement) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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body->append(nullptr);
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IfStatement stmt(Source{}, cond, body, ElseStatementList{});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_InvalidBodyStatement) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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body->append(create<IfStatement>(Source{}, nullptr,
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create<BlockStatement>(Source{}),
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ast::ElseStatementList{}));
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IfStatement stmt(Source{}, cond, body, ElseStatementList{});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_NullElseStatement) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body,
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{
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create<ElseStatement>(
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Source{},
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create<IdentifierExpression>(
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Source{}, mod.RegisterSymbol("Ident"), "Ident"),
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create<BlockStatement>(Source{})),
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create<ElseStatement>(Source{}, nullptr,
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create<BlockStatement>(Source{})),
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nullptr,
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});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_InvalidElseStatement) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(
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Source{}, cond, body,
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{
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create<ElseStatement>(Source{},
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create<IdentifierExpression>(
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Source{}, mod.RegisterSymbol(""), ""),
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create<BlockStatement>(Source{})),
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});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_MultipleElseWiththoutCondition) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body,
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{
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create<ElseStatement>(Source{}, nullptr,
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create<BlockStatement>(Source{})),
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create<ElseStatement>(Source{}, nullptr,
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create<BlockStatement>(Source{})),
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});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, IsValid_ElseNotLast) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body,
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{
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create<ElseStatement>(Source{}, nullptr,
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create<BlockStatement>(Source{})),
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create<ElseStatement>(
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Source{},
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create<IdentifierExpression>(
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Source{}, mod.RegisterSymbol("ident"), "ident"),
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create<BlockStatement>(Source{})),
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});
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EXPECT_FALSE(stmt.IsValid());
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}
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TEST_F(IfStatementTest, ToStr) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body, ElseStatementList{});
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std::ostringstream out;
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stmt.to_str(out, 2);
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EXPECT_EQ(demangle(out.str()), R"( If{
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(
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Identifier[not set]{cond}
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)
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{
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Discard{}
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}
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}
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)");
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}
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TEST_F(IfStatementTest, ToStr_WithElseStatements) {
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auto* cond = create<IdentifierExpression>(Source{},
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mod.RegisterSymbol("cond"), "cond");
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auto* body = create<BlockStatement>(Source{});
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body->append(create<DiscardStatement>(Source{}));
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auto* else_if_body = create<BlockStatement>(Source{});
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else_if_body->append(create<DiscardStatement>(Source{}));
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auto* else_body = create<BlockStatement>(Source{});
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else_body->append(create<DiscardStatement>(Source{}));
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else_body->append(create<DiscardStatement>(Source{}));
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IfStatement stmt(Source{}, cond, body,
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{
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create<ElseStatement>(
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Source{},
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create<IdentifierExpression>(
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Source{}, mod.RegisterSymbol("ident"), "ident"),
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else_if_body),
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create<ElseStatement>(Source{}, nullptr, else_body),
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});
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std::ostringstream out;
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stmt.to_str(out, 2);
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EXPECT_EQ(demangle(out.str()), R"( If{
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(
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Identifier[not set]{cond}
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)
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{
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Discard{}
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}
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}
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Else{
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(
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Identifier[not set]{ident}
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)
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{
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Discard{}
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}
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}
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Else{
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{
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Discard{}
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Discard{}
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}
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}
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)");
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}
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} // namespace
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} // namespace ast
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} // namespace tint
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