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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "testing/gtest/include/gtest/gtest.h"
#include "tools/gn/input_file.h"
#include "tools/gn/parse_tree.h"
#include "tools/gn/scope.h"
#include "tools/gn/test_with_scope.h"
TEST(ParseTree, Accessor) {
TestWithScope setup;
// Make a pretend parse node with proper tracking that we can blame for the
// given value.
InputFile input_file(SourceFile("//foo"));
Token base_token(Location(&input_file, 1, 1, 1), Token::IDENTIFIER, "a");
Token member_token(Location(&input_file, 1, 1, 1), Token::IDENTIFIER, "b");
AccessorNode accessor;
accessor.set_base(base_token);
scoped_ptr<IdentifierNode> member_identifier(
new IdentifierNode(member_token));
accessor.set_member(member_identifier.Pass());
// The access should fail because a is not defined.
Err err;
Value result = accessor.Execute(setup.scope(), &err);
EXPECT_TRUE(err.has_error());
EXPECT_EQ(Value::NONE, result.type());
// Define a as a Scope. It should still fail because b isn't defined.
err = Err();
setup.scope()->SetValue("a",
Value(NULL, scoped_ptr<Scope>(new Scope(setup.scope()))), NULL);
result = accessor.Execute(setup.scope(), &err);
EXPECT_TRUE(err.has_error());
EXPECT_EQ(Value::NONE, result.type());
// Define b, accessor should succeed now.
const int64 kBValue = 42;
err = Err();
setup.scope()->GetMutableValue("a", false)->scope_value()->SetValue(
"b", Value(NULL, kBValue), NULL);
result = accessor.Execute(setup.scope(), &err);
EXPECT_FALSE(err.has_error());
ASSERT_EQ(Value::INTEGER, result.type());
EXPECT_EQ(kBValue, result.int_value());
}
TEST(ParseTree, BlockUnusedVars) {
TestWithScope setup;
// Printing both values should be OK.
TestParseInput input_all_used(
"{\n"
" a = 12\n"
" b = 13\n"
" print(\"$a $b\")\n"
"}");
EXPECT_FALSE(input_all_used.has_error());
Err err;
input_all_used.parsed()->Execute(setup.scope(), &err);
EXPECT_FALSE(err.has_error());
// Skipping one should throw an unused var error.
TestParseInput input_unused(
"{\n"
" a = 12\n"
" b = 13\n"
" print(\"$a\")\n"
"}");
EXPECT_FALSE(input_unused.has_error());
input_unused.parsed()->Execute(setup.scope(), &err);
EXPECT_TRUE(err.has_error());
// Also verify that the unused variable has the correct origin set. The
// origin will point to the value assigned to the variable (in this case, the
// "13" assigned to "b".
EXPECT_EQ(3, err.location().line_number());
EXPECT_EQ(7, err.location().char_offset());
}
TEST(ParseTree, OriginForDereference) {
TestWithScope setup;
TestParseInput input(
"a = 6\n"
"get_target_outputs(a)");
EXPECT_FALSE(input.has_error());
Err err;
input.parsed()->Execute(setup.scope(), &err);
EXPECT_TRUE(err.has_error());
// The origin for the "not a string" error message should be where the value
// was dereferenced (the "a" on the second line).
EXPECT_EQ(2, err.location().line_number());
EXPECT_EQ(20, err.location().char_offset());
}
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