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#include <string.h>
#include <stdbool.h>
#include "parser/parser.h"
#include "tests.h"
static bool text_is(struct Token token, const char* text)
{
size_t length = strlen(text);
return token.length == length && memcmp(token.start, text, length) == 0;
}
static bool primary_is(struct Expr* expr, const char* text)
{
return expr->kind == EXPR_PRIMARY && text_is(expr->primary.token, text);
}
static void test_parse_consts(struct TestContext* context)
{
struct Lexer lexer = create_lexer("const A = 1\nconst B = 60\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.const_count == 2);
check(context, text_is(program.consts[0].name, "A"));
check(context, text_is(program.consts[0].value, "1"));
check(context, text_is(program.consts[1].name, "B"));
check(context, text_is(program.consts[1].value, "60"));
free_program(&program);
}
static void test_parse_data(struct TestContext* context)
{
struct Lexer lexer = create_lexer("data msg = \"hi\"\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.data_count == 1);
check(context, text_is(program.data_decls[0].name, "msg"));
check(context, text_is(program.data_decls[0].value, "\"hi\""));
free_program(&program);
}
static void test_parse_proc_params(struct TestContext* context)
{
struct Lexer lexer = create_lexer("proc f(a: rdi, b: rsi)\n{\n}\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.proc_count == 1);
check(context, text_is(program.procs[0].name, "f"));
check(context, program.procs[0].param_count == 2);
check(context, text_is(program.procs[0].params[0].name, "a"));
check(context, text_is(program.procs[0].params[0].reg, "rdi"));
check(context, text_is(program.procs[0].params[1].name, "b"));
check(context, text_is(program.procs[0].params[1].reg, "rsi"));
free_program(&program);
}
static void test_parse_proc_body(struct TestContext* context)
{
struct Lexer lexer = create_lexer("proc main\n{\nrax = 1\nrcx -= 1\n^rsi = rdx\n}\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.proc_count == 1);
check(context, program.procs[0].body_count == 3);
struct Statement first = program.procs[0].body[0];
check(context, first.kind == STATEMENT_ASSIGN);
check(context, !first.assign.target_deref);
check(context, text_is(first.assign.target, "rax"));
check(context, text_is(first.assign.op, "="));
check(context, primary_is(first.assign.value, "1"));
struct Statement second = program.procs[0].body[1];
check(context, text_is(second.assign.target, "rcx"));
check(context, text_is(second.assign.op, "-="));
struct Statement third = program.procs[0].body[2];
check(context, third.assign.target_deref);
check(context, text_is(third.assign.target, "rsi"));
check(context, primary_is(third.assign.value, "rdx"));
free_program(&program);
}
static void test_parse_simple_statements(struct TestContext* context)
{
struct Lexer lexer = create_lexer("proc main\n{\nloop:\nsyscall\ngoto loop\n}\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.procs[0].body_count == 3);
struct Statement label = program.procs[0].body[0];
check(context, label.kind == STATEMENT_LABEL);
check(context, text_is(label.label.name, "loop"));
check(context, program.procs[0].body[1].kind == STATEMENT_SYSCALL);
struct Statement jump = program.procs[0].body[2];
check(context, jump.kind == STATEMENT_GOTO);
check(context, text_is(jump.jump.label, "loop"));
free_program(&program);
}
static void test_parse_expressions(struct TestContext* context)
{
struct Lexer lexer = create_lexer("proc main\n{\nrsi = buffer + 31\nrdx = message.len\n}\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.procs[0].body_count == 2);
struct Expr* sum = program.procs[0].body[0].assign.value;
check(context, sum->kind == EXPR_BINARY);
check(context, text_is(sum->binary.op, "+"));
check(context, primary_is(sum->binary.left, "buffer"));
check(context, primary_is(sum->binary.right, "31"));
struct Expr* member = program.procs[0].body[1].assign.value;
check(context, member->kind == EXPR_MEMBER);
check(context, primary_is(member->member.object, "message"));
check(context, text_is(member->member.member, "len"));
free_program(&program);
}
static void test_parse_if(struct TestContext* context)
{
struct Lexer lexer = create_lexer("proc main\n{\nif rax != 0\ngoto loop\n}\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.procs[0].body_count == 1);
struct Statement branch = program.procs[0].body[0];
check(context, branch.kind == STATEMENT_IF);
check(context, primary_is(branch.branch.left, "rax"));
check(context, text_is(branch.branch.comparison, "!="));
check(context, primary_is(branch.branch.right, "0"));
check(context, branch.branch.body->kind == STATEMENT_GOTO);
check(context, text_is(branch.branch.body->jump.label, "loop"));
free_program(&program);
}
static void test_parse_call(struct TestContext* context)
{
struct Lexer lexer = create_lexer("proc main\n{\nprint_number(r12)\nf(a, b)\n}\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.procs[0].body_count == 2);
struct CallStatement first = program.procs[0].body[0].call;
check(context, program.procs[0].body[0].kind == STATEMENT_CALL);
check(context, text_is(first.name, "print_number"));
check(context, first.arg_count == 1);
check(context, primary_is(first.args[0], "r12"));
struct CallStatement second = program.procs[0].body[1].call;
check(context, second.arg_count == 2);
check(context, primary_is(second.args[0], "a"));
check(context, primary_is(second.args[1], "b"));
free_program(&program);
}
static void test_parse_stack(struct TestContext* context)
{
struct Lexer lexer = create_lexer("proc main\n{\nstack buffer[32]\n}\n");
struct Program program;
check(context, parse_program(&lexer, &program));
check(context, program.procs[0].body_count == 1);
struct Statement statement = program.procs[0].body[0];
check(context, statement.kind == STATEMENT_STACK);
check(context, text_is(statement.stack.name, "buffer"));
check(context, text_is(statement.stack.size, "32"));
free_program(&program);
}
static void test_parse_errors(struct TestContext* context)
{
struct Program program;
struct Lexer missing_name = create_lexer("const = 1\n");
check(context, !parse_program(&missing_name, &program));
free_program(&program);
struct Lexer wrong_value = create_lexer("data x = 5\n");
check(context, !parse_program(&wrong_value, &program));
free_program(&program);
struct Lexer unterminated = create_lexer("proc main\n{\nrax = 1\n");
check(context, !parse_program(&unterminated, &program));
free_program(&program);
}
void run_parser_tests(struct TestContext* context)
{
test_parse_consts(context);
test_parse_data(context);
test_parse_proc_params(context);
test_parse_proc_body(context);
test_parse_simple_statements(context);
test_parse_expressions(context);
test_parse_if(context);
test_parse_call(context);
test_parse_stack(context);
test_parse_errors(context);
}
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