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Add cast expression type determination. 

This CL adds the type determination for cast expressions.

Bug: tint:5
Change-Id: I35ae28e3b70c554cd48c6abcd78d95c2ba7211fa
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/18845
Reviewed-by: David Neto <dneto@google.com>
This commit is contained in:
dan sinclair 2020-04-07 16:41:23 +00:00
parent 3ca8746ebd
commit 4e8079544a
3 changed files with 22 additions and 0 deletions
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9
src/type_determiner.cc
View File

@ -22,6 +22,7 @@
#include "src/ast/break_statement.h"
#include "src/ast/call_expression.h"
#include "src/ast/case_statement.h"
#include "src/ast/cast_expression.h"
#include "src/ast/continue_statement.h"
#include "src/ast/else_statement.h"
#include "src/ast/identifier_expression.h"
@ -197,6 +198,9 @@ bool TypeDeterminer::DetermineResultType(ast::Expression* expr) {
if (expr->IsCall()) {
return DetermineCall(expr->AsCall());
}
if (expr->IsCast()) {
return DetermineCast(expr->AsCast());
}
if (expr->IsConstructor()) {
return DetermineConstructor(expr->AsConstructor());
}
@ -245,6 +249,11 @@ bool TypeDeterminer::DetermineCall(ast::CallExpression* expr) {
return true;
}
bool TypeDeterminer::DetermineCast(ast::CastExpression* expr) {
expr->set_result_type(expr->type());
return true;
}
bool TypeDeterminer::DetermineConstructor(ast::ConstructorExpression* expr) {
if (expr->IsTypeConstructor()) {
expr->set_result_type(expr->AsTypeConstructor()->type());

2
src/type_determiner.h
View File

@ -28,6 +28,7 @@ namespace ast {
class ArrayAccessorExpression;
class AsExpression;
class CallExpression;
class CastExpression;
class ConstructorExpression;
class IdentifierExpression;
class Function;
@ -79,6 +80,7 @@ class TypeDeterminer {
bool DetermineArrayAccessor(ast::ArrayAccessorExpression* expr);
bool DetermineAs(ast::AsExpression* expr);
bool DetermineCall(ast::CallExpression* expr);
bool DetermineCast(ast::CastExpression* expr);
bool DetermineConstructor(ast::ConstructorExpression* expr);
bool DetermineIdentifier(ast::IdentifierExpression* expr);
Context& ctx_;

11
src/type_determiner_test.cc
View File

@ -24,6 +24,7 @@
#include "src/ast/break_statement.h"
#include "src/ast/call_expression.h"
#include "src/ast/case_statement.h"
#include "src/ast/cast_expression.h"
#include "src/ast/continue_statement.h"
#include "src/ast/else_statement.h"
#include "src/ast/float_literal.h"
@ -550,6 +551,16 @@ TEST_F(TypeDeterminerTest, Expr_Call_WithParams) {
EXPECT_TRUE(b_ptr->result_type()->IsI32());
}
TEST_F(TypeDeterminerTest, Expr_Cast) {
ast::type::F32Type f32;
ast::CastExpression cast(&f32,
std::make_unique<ast::IdentifierExpression>("name"));
EXPECT_TRUE(td()->DetermineResultType(&cast));
ASSERT_NE(cast.result_type(), nullptr);
EXPECT_TRUE(cast.result_type()->IsF32());
}
TEST_F(TypeDeterminerTest, Expr_Constructor_Scalar) {
ast::type::F32Type f32;
ast::ScalarConstructorExpression s(