karboscript
所属分类：编程语言基础
开发工具：GO
文件大小：0KB
下载次数：0
上传日期：2023-07-31 13:45:55
上 传 者：
sh-1993
说明： 在Golang中为好玩而编写的简单编程语言，
(Simple programming language made for fun in Golang,)
文件列表:
examples/ (0, 2023-07-31)
examples/fibonacci.ks (186, 2023-07-31)
go.mod (252, 2023-07-31)
go.sum (2515, 2023-07-31)
main.go (1914, 2023-07-31)
src/ (0, 2023-07-31)
src/buildin.go (732, 2023-07-31)
src/execute.go (17463, 2023-07-31)
src/exp_operation.go (21, 2023-07-31)
src/opcode.go (11387, 2023-07-31)
src/parser.go (5566, 2023-07-31)
test.ks (80, 2023-07-31)
test/ (0, 2023-07-31)
test/func_test.go (4518, 2023-07-31)
[](https://github.com/karboosx/karboscript/actions/workflows/tests.yml)
# KarboScript
Simple programming language made for fun to learn how parsers and compilers works. Don't have much capability but have the basic stuff like functions, if, loops.
## Main program
Each program has to have `main()` function:
```
function main() {
//add your code here
}
```
This is the starting point of every script.
## Usage
Execute `script.ks` file
```
# ./karboscript script.ks
```
Show opcodes for `script.ks` file
```
# ./karboscript --opcode script.ks
```
## Buildin functions
We have to our disposal couple of buildin functions:
| function name | arguments | return | example |
|---------------|-----------|--------|---------|
| out() | any variable... | nothing | out(1,2,3); |
| readLine() | nothing | string | name = readLine(); |
| readInt() | nothing | int | name = readInt(); |
## Syntax
# Declare function
```c
function
([ ], ...) [return_type] {
[body]
}
```
# Declare variable
```c
= ;
```
For example: `string test = "hello world";`
# Array
```c
array = [, ...];
```
Access array element
```c
[]
```
Assign array element
```c
[] = ;
```
Push new element to array
```c
[] = ;
```
# Call function
```c
(, ...);
```
For example: `func(1, 2, 3, variable);`
# Loops
While
```c
while () {
[body]
}
```
For
```c
for ; ; ; {
[body]
}
```
From to
```c
from to as ; {
[body]
}
```
## Examples
Fibonaci:
```c
function main() {
int a = 1;
int b = 1;
while (b < 500) {
c = b;
b = a + b;
a = c;
out (b);
}
}
```
while loop:
```c
function main() {
int a = 1;
int b = 1;
while (a < 5) {
b = 1;
while (b < 5) {
out ("test", b);
b=b+1;
}
a=a+1;
}
}
```
If statement
```c
function main()
{
if (10 == 10) {
out("10 == 10");
}
if (500 < 200) {
out("500 < 200");
}
if (12 > 10) {
out("12 > 10");
}
}
```
Arguments for function
```c
function main()
{
out(1000 + test(800), test(500));
}
function test(int test)
{
return test + 200;
}
```
For loop
```c
function main() {
for int i=0; i<10; i=i+1; {
out(i);
}
}
```
For increment (loop from one expresion to another with interval of 1)
```c
function main() {
from 0 to 10 as i {
out(i);
}
}
```
Read line from stdin
```c
function main() {
out("Enter name: ");
name = readLine();
out("Your name is:", name);
}
```
Return type
```c
function main() {
out(test());
}
function test() string {
return "test";
}
```
Array declaration
```c
function main() {
array a = [1, 2, 3, 4, 5];
out(a[0]);
}
```
Array assignment
```c
function main() {
array a = [1, 2, 3, 4, 5];
a[0] = 10;
out(a[0]);
}
```
# Intermediary code
The code is compiled to intermediary code which is then executed by virtual machine. For example this code:
```c
function main() {
int a = 1;
int b = 1;
int max = 500;
while (b < max) {
out (b);
int c = b;
int b = a + b;
a = c;
}
}
```
Will be compiled to:
```
"_function.main: function"
"add_scope"
"push_exp ( 1 )"
"sub_scope"
"set_local_var_exp ( int a )"
"add_scope"
"push_exp ( 1 )"
"sub_scope"
"set_local_var_exp ( int b )"
"add_scope"
"push_exp ( 500 )"
"sub_scope"
"set_local_var_exp ( int max )"
"_while.d: while_start"
"add_scope"
"push_exp_var ( b )"
"push_exp_var ( max )"
"exp_call ( < )"
"sub_scope"
"while ( _while.13 )"
"add_scope"
"push_exp_var ( b )"
"sub_scope"
"push_function_arg"
"call_function ( out 1 )"
"add_scope"
"push_exp_var ( b )"
"sub_scope"
"set_local_var_exp ( int c )"
"add_scope"
"push_exp_var ( a )"
"push_exp_var ( b )"
"exp_call ( + )"
"sub_scope"
"set_local_var_exp ( int b )"
"add_scope"
"push_exp_var ( c )"
"sub_scope"
"set_local_var_exp ( a )"
"jmp ( _while.d )"
"_while.13: while_else"
"function_return"
"call_function ( main 0 )"
"exit ( main 0 )"
```
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