Jerry (the command line tool) has been supporting the execution of
multiple script files for long. However, until now, it simply
concatenated all sources into a single source buffer and
parsed/executed them as one unit. Other JS execution tools (e.g.,
jsc, v8) load and execute separate files as separate units -- but
still in the same execution environment. The most significant
effect of this approach is that the `"use strict;"` directive (or
the absence of it) at the beginning of each JS script file takes
effect as expected (i.e., as if the script was executed alone).
Contrarily, the concatenation-based approach forces the strictness
of the first script on all the rest (i.e., if the first script
starts with `"use strict";` the rest is also executed in a strict
environment even if they did not contain the directive, and vice
versa).
This patch makes the jerry command line tool to load/parse/run one
unit at a time.
Side effects:
- As there is no need for separate file read routines that load one
file (a snapshot) or concat multiple (JS sources) anymore, those
routines got merged.
- Both previous read routines used multiple stdio functions
(`fseek`, `ftell`, and `rewind`). This has been simplified to
rely on `fread` only to find out the length of the input.
- This simplification made the above mentioned functions
superfluous in jerry-libc.
- As some error messages had to be touched in this patch, several
more have been beautified to make them more consistent.
- One small change was needed in `jerry_parse` in jerry-core to
allow subsequent parsing of multiple sources (without that, an
assertion was triggered).
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
Recent changes eliminate the need for `jerry_port_putchar`. As port
API discussions don't make it likely that it will ever be needed
again, this patch removes its declaration from jerry-port.h and its
implementations from the port(s).
The related code in jerry-libc is not needed either: whatever `putc`
(and `puts`) can do, `printf` can do as well.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
* LICENSE needed year update.
* The asm component of the posix target of jerry-libc had no
copyright & license notice since it has been introduced in 2015.
Traced back history and added missing header with correct years.
* Three tests in jerry/fail/1 also missed header. Added.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
The two target implementations are very close clones of each other.
The only known differences are the following:
* The asm component of the linux target has `.type` and `.size`
declarations for the functions defined therein, while the darwin
target doesn't support those.
* Linux uses `__NR_xxx` mnemonics for syscall numbers, while darwin
uses `SYS_xxx` format.
* Darwin does not have `exit_group` syscall but `exit` only.
* The linux target has a commented out `jrt_set_mem_limits` fuction
declaration at the end of the C source. (Based on its name, this
function does not really belong here.)
Simple preprocessor macros can unify the first three differences.
While for the sake of legacy, we can keep the fourth commented-out
code in the code base; it might turn out to be useful elsewhere in
the future. Since it remains commented out it wont cause any
problems on any OSs.
So, this patch gets rid of a lot of duplication.
JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
