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//
// Copyright (c) 2012 The ANGLE Project 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 "PreprocessorTest.h"
#include "compiler/preprocessor/Token.h"
class SpaceTest : public PreprocessorTest
{
protected:
void expectSpace(const std::string& str)
{
const char* cstr = str.c_str();
ASSERT_TRUE(mPreprocessor.init(1, &cstr, 0));
pp::Token token;
// "foo" is returned after ignoring the whitespace characters.
mPreprocessor.lex(&token);
EXPECT_EQ(pp::Token::IDENTIFIER, token.type);
EXPECT_EQ("foo", token.text);
// The whitespace character is however recorded with the next token.
EXPECT_TRUE(token.hasLeadingSpace());
}
};
// Whitespace characters allowed in GLSL.
// Note that newline characters (\n) will be tested separately.
static const char kSpaceChars[] = {' ', '\t', '\v', '\f'};
// This test fixture tests the processing of a single whitespace character.
// All tests in this fixture are ran with all possible whitespace character
// allowed in GLSL.
class SpaceCharTest : public SpaceTest,
public testing::WithParamInterface<char>
{
};
TEST_P(SpaceCharTest, SpaceIgnored)
{
// Construct test string with the whitespace char before "foo".
std::string str(1, GetParam());
str.append("foo");
expectSpace(str);
}
INSTANTIATE_TEST_CASE_P(SingleSpaceChar,
SpaceCharTest,
testing::ValuesIn(kSpaceChars));
// This test fixture tests the processing of a string containing consecutive
// whitespace characters. All tests in this fixture are ran with all possible
// combinations of whitespace characters allowed in GLSL.
typedef std::tr1::tuple<char, char, char> SpaceStringParams;
class SpaceStringTest : public SpaceTest,
public testing::WithParamInterface<SpaceStringParams>
{
};
TEST_P(SpaceStringTest, SpaceIgnored)
{
// Construct test string with the whitespace char before "foo".
std::string str;
str.push_back(std::tr1::get<0>(GetParam()));
str.push_back(std::tr1::get<1>(GetParam()));
str.push_back(std::tr1::get<2>(GetParam()));
str.append("foo");
expectSpace(str);
}
INSTANTIATE_TEST_CASE_P(SpaceCharCombination,
SpaceStringTest,
testing::Combine(testing::ValuesIn(kSpaceChars),
testing::ValuesIn(kSpaceChars),
testing::ValuesIn(kSpaceChars)));
// The tests above make sure that the space char is recorded in the
// next token. This test makes sure that a token is not incorrectly marked
// to have leading space.
TEST_F(SpaceTest, LeadingSpace)
{
const char* str = " foo+ -bar";
ASSERT_TRUE(mPreprocessor.init(1, &str, 0));
pp::Token token;
mPreprocessor.lex(&token);
EXPECT_EQ(pp::Token::IDENTIFIER, token.type);
EXPECT_EQ("foo", token.text);
EXPECT_TRUE(token.hasLeadingSpace());
mPreprocessor.lex(&token);
EXPECT_EQ('+', token.type);
EXPECT_FALSE(token.hasLeadingSpace());
mPreprocessor.lex(&token);
EXPECT_EQ('-', token.type);
EXPECT_TRUE(token.hasLeadingSpace());
mPreprocessor.lex(&token);
EXPECT_EQ(pp::Token::IDENTIFIER, token.type);
EXPECT_EQ("bar", token.text);
EXPECT_FALSE(token.hasLeadingSpace());
}
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