258 lines
9.4 KiB
C++
258 lines
9.4 KiB
C++
/* file parser.test.cpp
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*
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* author: Roland Conybeare
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*/
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#include "xo/reader/parser.hpp"
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#include <catch2/catch.hpp>
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namespace xo {
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using parser_type = xo::scm::parser;
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using token_type = parser_type::token_type;
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using xo::scm::exprstatetype;
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using std::cerr;
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using std::endl;
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//using xo::ast::Expression;
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namespace ut {
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TEST_CASE("parser", "[parser]") {
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for (std::size_t i_tc = 0; i_tc < 2; ++i_tc) {
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parser_type parser;
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constexpr bool c_debug_flag = true;
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scope log(XO_DEBUG(c_debug_flag), xtag("i_tc", i_tc));
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parser.begin_translation_unit();
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REQUIRE(parser.stack_size() == 1);
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REQUIRE(parser.i_exstype(0)
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== exprstatetype::expect_toplevel_expression_sequence);
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/* input:
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* def
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*/
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{
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auto r1 = parser.include_token(token_type::def());
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REQUIRE(r1.get() == nullptr);
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/* stack should be:
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*
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* expect_toplevel_expression_sequence
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* def_0
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* expect_symbol
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*/
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CHECK(parser.stack_size() == 3);
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if (parser.stack_size() > 0)
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CHECK(parser.i_exstype(0) == exprstatetype::expect_symbol);
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if (parser.stack_size() > 1)
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CHECK(parser.i_exstype(1) == exprstatetype::def_0);
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if (parser.stack_size() > 2)
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CHECK(parser.i_exstype(2)
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== exprstatetype::expect_toplevel_expression_sequence);
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}
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/* input:
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* def foo
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* ^ ^
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* 0 1
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*/
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{
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auto r2 = parser.include_token(token_type::symbol_token("foo"));
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cerr << "parser state after [def foo]" << endl;
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cerr << parser << endl;
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REQUIRE(r2.get() == nullptr);
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/* stack should be:
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*
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* expect_toplevel_expression_sequence
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* def_1
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*/
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CHECK(parser.stack_size() == 2);
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if (parser.stack_size() > 0)
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CHECK(parser.i_exstype(0) == exprstatetype::def_1);
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if (parser.stack_size() > 1)
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CHECK(parser.i_exstype(1)
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== exprstatetype::expect_toplevel_expression_sequence);
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}
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if (i_tc == 0) {
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;
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} else if (i_tc == 1) {
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/* input:
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* def foo :
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* ^ ^
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* 0 1
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*/
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{
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auto r3 = parser.include_token(token_type::colon());
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cerr << "parser state after [def foo :]" << endl;
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cerr << parser << endl;
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REQUIRE(r3.get() == nullptr);
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/* stack should be:
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*
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* expect_toplevel_expression_sequence
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* def_2
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* expect_symbol
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*/
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CHECK(parser.stack_size() == 3);
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if (parser.stack_size() > 0)
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CHECK(parser.i_exstype(0) == exprstatetype::expect_type);
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if (parser.stack_size() > 1)
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CHECK(parser.i_exstype(1) == exprstatetype::def_2);
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if (parser.stack_size() > 2)
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CHECK(parser.i_exstype(2)
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== exprstatetype::expect_toplevel_expression_sequence);
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}
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/* input:
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* def foo : f64
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* ^ ^
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* 0 1
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*/
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{
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auto r4 = parser.include_token(token_type::symbol_token("f64"));
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cerr << "parser state after [def foo : f64]" << endl;
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cerr << parser << endl;
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REQUIRE(r4.get() == nullptr);
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CHECK(parser.stack_size() == 2);
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/* stack should be:
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*
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* expect_toplevel_expression_sequence
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* def_3
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*/
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CHECK(parser.stack_size() == 2);
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if (parser.stack_size() > 0)
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CHECK(parser.i_exstype(0) == exprstatetype::def_3);
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if (parser.stack_size() > 1)
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CHECK(parser.i_exstype(1)
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== exprstatetype::expect_toplevel_expression_sequence);
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/* expecting either:
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* = rhs-expression
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* new-expression
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*/
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}
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}
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/* input:
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*
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* i_tc==0:
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* def foo =
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* ^ ^
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* 0 1
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*
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* i_tc==1:
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* def foo : f64 =
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* ^ ^
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* 0 1
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*/
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{
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auto r5 = parser.include_token(token_type::singleassign());
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cerr << "parser state after [def foo : f64 =]" << endl;
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cerr << parser << endl;
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REQUIRE(r5.get() == nullptr);
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CHECK(parser.stack_size() == 3);
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/* stack should be
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*
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* expect_toplevel_expression_sequence
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* def_4
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* expect_expression
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*/
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CHECK(parser.stack_size() == 3);
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if (parser.stack_size() > 0)
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CHECK(parser.i_exstype(0) == exprstatetype::expect_rhs_expression);
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if (parser.stack_size() > 1)
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CHECK(parser.i_exstype(1) == exprstatetype::def_4);
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if (parser.stack_size() > 2)
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CHECK(parser.i_exstype(2)
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== exprstatetype::expect_toplevel_expression_sequence);
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}
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/* input:
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*
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* i_tc==0:
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* def foo = 3.14159265
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* ^ ^
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* 0 1
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*
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* i_tc==1:
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* def foo : f64 = 3.14159265
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* ^ ^
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* 0 1
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*/
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{
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auto r6 = parser.include_token(token_type::f64_token("3.14159265"));
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cerr << "parser state after [def foo : f64 = 3.14159265]" << endl;
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cerr << parser << endl;
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REQUIRE(r6.get() == nullptr);
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/* stack should be
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*
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* expect_toplevel_expression_sequence
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*/
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CHECK(parser.stack_size() == 4);
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if (parser.stack_size() > 0)
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CHECK(parser.i_exstype(0) == exprstatetype::expr_progress);
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if (parser.stack_size() > 1)
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CHECK(parser.i_exstype(1) == exprstatetype::expect_rhs_expression);
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if (parser.stack_size() > 2)
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CHECK(parser.i_exstype(2) == exprstatetype::def_4);
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if (parser.stack_size() > 3)
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CHECK(parser.i_exstype(3)
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== exprstatetype::expect_toplevel_expression_sequence);
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}
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/* input:
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*
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* i_tc==0:
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* def foo = 3.14159265 ;
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* ^ ^
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* 0 1
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*
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* i_tc==1:
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* def foo : f64 = 3.14159265 ;
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* ^ ^
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* 0 1
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*/
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{
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auto r7 = parser.include_token(token_type::semicolon());
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cerr << "parser state after [def foo : f64 = 3.14159265;]" << endl;
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cerr << parser << endl;
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REQUIRE(r7.get() != nullptr);
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CHECK(parser.stack_size() == 1);
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/* stack should be
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*
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* expect_toplevel_expression_sequence
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*/
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CHECK(parser.stack_size() == 1);
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if (parser.stack_size() > 0)
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CHECK(parser.i_exstype(0)
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== exprstatetype::expect_toplevel_expression_sequence);
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}
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}
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} /*TEST_CASE(parser)*/
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} /*namespace ut*/
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} /*namespace xo*/
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/* end parser.test.cpp */
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