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|
The `loadstring()` function compiles the given string argument into a
ucode program and returns the resulting entry function.
Throws an exception on compilation failure.
Returns the compiled program entry function.
Compile a simple program with default options
-- Testcase --
{%
let fn = loadstring('return 1 + 1;\n');
fn();
%}
-- End --
-- Expect stdout --
return 1 + 1;
-- End --
Compile a program in raw mode
-- Testcase --
{%
let fn = loadstring('printf("%d\\n", 1 + 1);\n', { raw_mode: true });
fn();
%}
-- End --
-- Expect stdout --
2
-- End --
Compile a program in template mode
-- Testcase --
{%
let fn = loadstring('{{ 1 + 1 }}\n', { raw_mode: false });
fn();
%}
-- End --
-- Expect stdout --
2
-- End --
Override module search path during compilation (import should fail due to empty path)
-- Testcase --
{%
loadstring('import { readfile } from "fs";\n', {
raw_mode: true,
module_search_path: []
});
%}
-- End --
-- Expect stderr --
Runtime error: Unable to compile source string:
| Syntax error: Unable to resolve path for module 'fs'
| In line 1, byte 30:
|
| `import { readfile } from "fs";`
| Near here -------------------^
In line 5, byte 3:
` });`
^-- Near here
-- End --
Force dynamic loading of unknown extensions at compile time (should succeed)
-- Testcase --
{%
loadstring('import foo from "doesnotexist";\n', {
raw_mode: true,
force_dynlink_list: [ "doesnotexist" ]
});
print("OK\n");
%}
-- End --
-- Expect stdout --
OK
-- End --
Compiling a syntax error (should fail with syntax error exception)
-- Testcase --
{%
loadstring('1 +', { raw_mode: true });
%}
-- End --
-- Expect stderr --
Runtime error: Unable to compile source string:
| Syntax error: Expecting expression
| In line 1, byte 4:
|
| `1 +`
| ^-- Near here
In line 2, byte 38:
` loadstring('1 +', { raw_mode: true });`
Near here ------------------------------^
-- End --
Test loading precompiled bytecode
-- Testcase --
{%
// utpl -c -o - -e $'Hello world\n' | hexdump -v -e '"" 16/1 "%02x " "\n"'
const program = hexdec(`
23 21 2f 75 73 72 2f 62 69 6e 2f 65 6e 76 20 75
63 6f 64 65 0a 1b 75 63 62 00 00 00 03 00 00 00
01 00 00 00 0e 5b 2d 65 20 61 72 67 75 6d 65 6e
74 5d 00 00 00 00 00 00 0d 48 65 6c 6c 6f 20 77
6f 72 6c 64 0a 00 00 00 00 00 00 00 03 8b 80 80
00 00 00 00 01 00 00 00 00 00 00 00 05 00 00 00
10 00 00 00 0c 48 65 6c 6c 6f 20 77 6f 72 6c 64
0a 00 00 00 01 00 00 00 70 00 00 00 05 6d 61 69
6e 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 08 01 00 00 00 00 41 07 3c 00 00 00
01 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00
00 00 00 00 01 00 00 00 00 00 00 00 05 00 00 00
10 00 00 00 08 28 63 61 6c 6c 65 65 29 00 00 00
00 00 00 00 01 40 00 00 00
`);
let fn = loadstring(program);
fn();
%}
-- End --
-- Expect stdout --
Hello world
-- End --
|
