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tests.cc
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// (c) Robert Muth - see LICENSE for more info
#include <cassert>
#include <cstddef>
#include <iostream>
#include <string>
#include <string_view>
#include <vector>
#include "pretty.h"
using namespace PP;
void SplitAndGroup(std::vector<Token>* out, std::string_view s,
BreakType break_type = BreakType::INCONSISTENT) {
out->push_back(Beg(break_type, 2));
size_t num_non_ws = 0;
size_t i;
for (i = 0; i < s.size(); ++i) {
if (s[i] == ' ') {
if (num_non_ws > 0) {
out->push_back(Str(s.substr(i - num_non_ws, num_non_ws)));
out->push_back(Brk());
num_non_ws = 0;
}
} else {
num_non_ws++;
}
}
assert(num_non_ws > 0);
out->push_back(Str(s.substr(i - num_non_ws, num_non_ws)));
out->push_back(End());
}
std::vector<Token> MakeTokensFromString(
std::string_view s, BreakType break_type = BreakType::INCONSISTENT) {
std::vector<Token> out;
SplitAndGroup(&out, s, break_type);
return out;
}
template <typename T>
void AppendAll(T& dst, const T& src) {
dst.insert(end(dst), begin(src), end(src));
}
int Test() {
std::vector<Token> example0 = {Beg(BreakType::FORCE_LINE_BREAK, 0),
Str("procedure test(x, y: Integer);"),
Brk(),
Str("begin"),
Beg(BreakType::FORCE_LINE_BREAK, 2),
Str("x:=1;"),
Brk(),
Str("y:=200;"),
Brk(),
Str("for z:= 1 to 100 do"),
Brk(),
Str("begin"),
Beg(BreakType::FORCE_LINE_BREAK, 2),
Str("x := x + z;"),
End(),
Brk(),
Str("end;"),
Brk(),
Str("y:=x;"),
End(),
Brk(),
Str("end;"),
End()};
std::vector<Token> example3a{Beg(BreakType::INCONSISTENT, 2),
Str("XXXXXXXXXX"),
Brk(),
Str("+"),
Brk(),
Str("YYYYYYYYYY"),
Brk(),
Str("+"),
Brk(),
Str("ZZZZZZZZZZ"),
End()};
std::vector<Token> example3b = {Beg(BreakType::INCONSISTENT, 4),
Str("XXXXXXXXXX"),
Brk(),
Str("+"),
Brk(),
Str("YYYYYYYYYY"),
Brk(),
Str("+"),
Brk(),
Str("ZZZZZZZZZZ"),
End()};
std::vector<Token> example4 = {Beg(BreakType::INCONSISTENT, 2),
Str("begin"),
Brk(),
Str("x"),
Brk(),
Str(":="),
Brk(),
Str("40"),
Brk(),
Str("+"),
Brk(),
Str("2"),
Brk(),
Str("end"),
End()};
std::vector<Token> example5 = {
Beg(BreakType::INCONSISTENT, 2),
Str("let x = "),
Beg(BreakType::INCONSISTENT, 2),
Str("{[10]uint:"),
LineBreak(),
#
Str("0,"),
Brk(),
Str("1,"),
Brk(),
Str("2,"),
Brk(),
Str("3,"),
Brk(),
Str("4,"),
Brk(),
Str("5,"),
Brk(),
Str("6,"),
//
LineBreak(),
Str("# comment"),
LineBreak(),
//
Str("0,"),
Brk(),
Str("1,"),
Brk(),
Str("2,"),
Brk(),
Str("3,"),
Brk(),
Str("4,"),
Brk(),
Str("5,"),
Brk(),
Str("6,"),
Brk(),
Str("7,"),
Brk(),
Str("8"),
//
Str("}"),
End(),
End(),
};
std::vector<Token> example6 = {{Beg(BreakType::INCONSISTENT, 6)}};
SplitAndGroup(&example6, "cases 1 : XXXXX");
example6.push_back(LineBreak());
SplitAndGroup(&example6, "2 : YYYYY");
example6.push_back(LineBreak());
SplitAndGroup(&example6, "3 : ZZZZZ");
example6.push_back(End());
std::vector<Token> example_abcd = {Beg(BreakType::CONSISTENT, 4), Str("("),
NoBreak(0), Str("a"), Brk(), Str("b"),
Brk(), Str("c"), Brk(), Str("d"),
// note missing break
Str(")"), End()};
std::vector<Token> example_abcd_x4 = {Beg(BreakType::CONSISTENT, 1), Str("("),
NoBreak(0)};
AppendAll(example_abcd_x4, example_abcd);
example_abcd_x4.push_back(Brk(0));
AppendAll(example_abcd_x4, example_abcd);
example_abcd_x4.push_back(Brk(0));
AppendAll(example_abcd_x4, example_abcd);
example_abcd_x4.push_back(Brk(0));
AppendAll(example_abcd_x4, example_abcd);
example_abcd_x4.push_back(Str(")"));
example_abcd_x4.push_back(End());
std::vector<Token> example_abcdefgh = {Beg(BreakType::CONSISTENT, 1),
Str("("),
NoBreak(0),
Beg(BreakType::CONSISTENT, 4),
Str("("),
NoBreak(0),
Str("abcde"),
NoBreak(1)};
AppendAll(example_abcdefgh, example_abcd_x4);
AppendAll(example_abcdefgh, std::vector<Token>{
Str(")"),
End(),
Str(")"),
Brk(1),
Beg(BreakType::CONSISTENT, 4),
Str("("),
NoBreak(0),
Str("abcdefgh"),
NoBreak(1),
});
AppendAll(example_abcdefgh, example_abcd_x4);
AppendAll(example_abcdefgh,
std::vector<Token>{Str(")"), End(), Str(")"), End()});
std::vector<Token> example_while = {Beg(BreakType::INCONSISTENT, 0),
Str("while"),
Brk(),
Str("True"),
Brk(0),
Str(":"),
End()};
std::vector<Token> example_print = {Beg(BreakType::INCONSISTENT, 0),
Str("print("),
Brk(0),
Str("'hello world'"),
Str(")"),
End()};
std::vector<Token> example_python;
example_python.push_back(Beg(BreakType::FORCE_LINE_BREAK, 4));
AppendAll(example_python, example_while);
example_python.push_back(Beg(BreakType::FORCE_LINE_BREAK, 4));
AppendAll(example_python, example_while);
example_python.push_back(Beg(BreakType::FORCE_LINE_BREAK, 4));
AppendAll(example_python, example_while);
example_python.push_back(Beg(BreakType::FORCE_LINE_BREAK, 4));
AppendAll(example_python, example_print);
example_python.push_back(End());
example_python.push_back(End());
example_python.push_back(End());
example_python.push_back(End());
struct {
size_t line_width;
std::vector<Token> tokens;
std::string expected;
} test_suite[] = {
{75, example6, R"(cases 1 : XXXXX
2 : YYYYY
3 : ZZZZZ)"},
//
{75, example0,
R"(procedure test(x, y: Integer);
begin
x:=1;
y:=200;
for z:= 1 to 100 do
begin
x := x + z;
end;
y:=x;
end;)"},
//
{75,
{Beg(BreakType::INCONSISTENT, 2), Str("XXXXXXX"), Brk(), Str("YYYYYYY"),
End()},
"XXXXXXX YYYYYYY"},
//
{75, example3a,
"XXXXXXXXXX + YYYYYYYYYY + "
"ZZZZZZZZZZ"},
{25, example3a,
"XXXXXXXXXX + YYYYYYYYYY +\n "
"ZZZZZZZZZZ"},
{20, example3a,
"XXXXXXXXXX +\n YYYYYYYYYY +\n "
"ZZZZZZZZZZ"},
{20, example3b,
"XXXXXXXXXX +\n YYYYYYYYYY +\n "
"ZZZZZZZZZZ"},
//
{75, example4, "begin x := 40 + 2 end"},
//
{20, MakeTokensFromString("locals a, b, c, d, e, f, g, h;"),
"locals a, b, c, d,\n e, f, g, h;"},
{20,
MakeTokensFromString("locals a, b, c, d, e, f, g, h;",
BreakType::CONSISTENT),
"locals\n a,\n b,\n c,\n d,\n "
"e,\n f,\n g,\n h;"},
//
{20, example5, R"(let x = {[10]uint:
0, 1, 2,
3, 4, 5,
6,
# comment
0, 1, 2,
3, 4, 5,
6, 7, 8})"},
{20, example_abcd, "(a b c d)"},
{5, example_abcd, "(a\n b\n c\n d)"},
//
{25, example_abcdefgh, R"(((abcde ((a b c d)
(a b c d)
(a b c d)
(a b c d))))
(abcdefgh ((a b c d)
(a b c d)
(a b c d)
(a b c d)))))"},
//
{40, example_python, R"(while True:
while True:
while True:
print('hello world'))"},
};
for (const auto& test : test_suite) {
std::string result = PrettyPrint(test.tokens, test.line_width);
std::cout << "\n"
<< "EXPECTED-START\n"
<< test.expected << "\nEXPECTED-END\n";
if (result != test.expected) {
std::cout << "\n"
<< "FAILED_START\n"
<< result << "\nFAILED_END\n";
return 1;
}
}
return 0;
}
int main() { return Test(); }