Add assignment statement type determination.
This CL adds type determination for the assignment statements.
Bug: tint:5
Change-Id: Ica0e59a459bfedc0c649d279f93a31b188c27736
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/18828
Reviewed-by: David Neto <dneto@google.com>
diff --git a/src/type_determiner.cc b/src/type_determiner.cc
index c911281..87bf07a 100644
--- a/src/type_determiner.cc
+++ b/src/type_determiner.cc
@@ -14,6 +14,7 @@
#include "src/type_determiner.h"
+#include "src/ast/assignment_statement.h"
#include "src/ast/scalar_constructor_expression.h"
#include "src/ast/type_constructor_expression.h"
@@ -69,7 +70,12 @@
return true;
}
-bool TypeDeterminer::DetermineResultType(ast::Statement*) {
+bool TypeDeterminer::DetermineResultType(ast::Statement* stmt) {
+ if (stmt->IsAssign()) {
+ auto a = stmt->AsAssign();
+ return DetermineResultType(a->lhs()) && DetermineResultType(a->rhs());
+ }
+
error_ = "unknown statement type for type determination";
return false;
}
diff --git a/src/type_determiner_test.cc b/src/type_determiner_test.cc
index 49a9c89..471b9a1 100644
--- a/src/type_determiner_test.cc
+++ b/src/type_determiner_test.cc
@@ -18,10 +18,12 @@
#include <utility>
#include "gtest/gtest.h"
+#include "src/ast/assignment_statement.h"
#include "src/ast/float_literal.h"
#include "src/ast/int_literal.h"
#include "src/ast/scalar_constructor_expression.h"
#include "src/ast/type/f32_type.h"
+#include "src/ast/type/i32_type.h"
#include "src/ast/type/vector_type.h"
#include "src/ast/type_constructor_expression.h"
@@ -39,6 +41,28 @@
std::unique_ptr<TypeDeterminer> td_;
};
+TEST_F(TypeDeterminerTest, Stmt_Assign) {
+ ast::type::F32Type f32;
+ ast::type::I32Type i32;
+
+ auto lhs = std::make_unique<ast::ScalarConstructorExpression>(
+ std::make_unique<ast::IntLiteral>(&i32, 2));
+ auto lhs_ptr = lhs.get();
+
+ auto rhs = std::make_unique<ast::ScalarConstructorExpression>(
+ std::make_unique<ast::FloatLiteral>(&f32, 2.3f));
+ auto rhs_ptr = rhs.get();
+
+ ast::AssignmentStatement assign(std::move(lhs), std::move(rhs));
+
+ EXPECT_TRUE(td()->DetermineResultType(&assign));
+ ASSERT_NE(lhs_ptr->result_type(), nullptr);
+ ASSERT_NE(rhs_ptr->result_type(), nullptr);
+
+ EXPECT_TRUE(lhs_ptr->result_type()->IsI32());
+ EXPECT_TRUE(rhs_ptr->result_type()->IsF32());
+}
+
TEST_F(TypeDeterminerTest, Expr_Constructor_Scalar) {
ast::type::F32Type f32;
ast::ScalarConstructorExpression s(