Implement nolambda:flow

diff --git a/Makefile b/Makefile
new file mode 100644 (file)
index 0000000..e64b357
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+all: flow.so
+
+uwu_include_path=../uwulang/
+
+%.so: %.c
+       gcc -g -I${uwu_include_path} -shared -fpic $< -o $@ -D_GNU_SOURCE
+
+clean:
+       rm -rf *.so

diff --git a/README.md b/README.md
index 993b89c541a7ad2d93431fd1cdea08b2ec561d32..bc71ab5cbba6c938b923d092f5f275f06f120493 100644 (file)
--- a/README.md
+++ b/README.md
@@ -6,35 +6,35 @@ nolambda is a collection of native [uwu](https://github.com/EliasFleckenstein03/
 ### `nolambda:flow`
 
 - `nolambda:flow:linear`: Accepts an arbitrary number of arguments of arbitrary type, but at least one and evaulates all of them in order. Returns the last argument.
-- `nolambda:flow:error`: Accepts a string as $0, prints the string to stderr and exits the program with failure. Returns `:nil:nil` in theory.
+- `nolambda:flow:error`: Accepts an arbitrary value as $0, prints it to stderr appending a newline and exits the program with failure. Returns `:nil:nil` in theory.
 
 ### `nolambda:io`
 
-- `nolambda:io:print`: Accepts a string as $0 and prints it to stdout, followed by a newline. Returns $0.
+- `nolambda:io:print`: Accepts an arbitrary value as $0 and prints it to stdout, followed by a newline. Returns $0.
 - `nolambda:io:scan`: Reads a line from stdin and returns it as a string, without the newline character at the end. This is interally using readline.
 
 ### `nolambda:fs`
 
 Note: all file paths are relative to the _directory the program was started from_.
 
-- `nolambda:fs:read`: Accepts a file name (string) as $0 and returns it's contents as a string. Causes an error if the file does not exist.
-- `nolambda:fs:write`: Accepts a file name (string) as $0 and overwrites it with the contents in $1 (string). Causes an error if the file could not be written. Returns `:bool:true` if the file was freshly created, `:bool:false` if it was overwritten.
-- `nolambda:fs:remove`: Accepts a file name (string) as $0 and removes it from the file system. Causes an error if the file could not be removed, but does not cause an error if the file does not exist. Returns `:bool:true` if the file existed and was removed, `:bool:false` otherwise.
-- `nolambda:fs:exists`: Accepts a file name (string) as $0 and returns `:bool:true` if it exists, `:bool:fase` else.
+- `nolambda:fs:read`: Accepts a file name (arbirary value, used as string) as $0 and returns it's contents as a string. Causes an error if the file does not exist.
+- `nolambda:fs:write`: Accepts a file name (arbirary value, used as string) as $0 and overwrites it with the contents in $1 (arbirary value, used as string). Causes an error if the file could not be written. Returns `:bool:true` if the file was freshly created, `:bool:false` if it was overwritten.
+- `nolambda:fs:remove`: Accepts a file name (arbirary value, used as string) as $0 and removes it from the file system. Causes an error if the file could not be removed, but does not cause an error if the file does not exist. Returns `:bool:true` if the file existed and was removed, `:bool:false` otherwise.
+- `nolambda:fs:exists`: Accepts a file name (arbirary value, used as string) as $0 and returns `:bool:true` if it exists, `:bool:fase` else.
 
 ### `nolambda:os`
 
 - `nolambda:os:exit`: Optionally takes an exit code (integer) as $0 and exits the program with the given exit code, or 0 if no exit code was given. Returns `:nil:nil` in theory.
 - `nolambda:os:sleep`: Takes an integer as $0 and pauses the execution of the program for $1 milliseconds. Returns `:nil:nil`.
-- `nolambda:os:execute`: Takes a command (string) as $0 and executes it as a shell command. Returns the exit code of the command as an integer.
+- `nolambda:os:execute`: Takes a command (arbirary value, used as string) as $0 and executes it as a shell command. Returns the exit code of the command as an integer.
 - `nolambda:os:time`: Returns the current unix time as an integer.
 
 ### `nolambda:global`
 
-- `nolambda:global:set`: Creates or overwrites a global variable named $0 (string) and puts the contents of $1 (arbitrary type) into it. Returns `:bool:false` if the variable existed previously and was updated, `:bool:true` if it was created.
-- `nolambda:global:get`: Returns the global variable named $0 (string). Causes an error if the variable does not exist.
-- `nolambda:global:exists`: Returns `:bool:true` if the global variable named $0 (string) exists, `:bool:false` else.
-- `nolambda:global:delete`: Deletes the global variable named $0 (string). Returns `:bool:true` if the variable existed previously, `:bool:false` else.
+- `nolambda:global:set`: Creates or overwrites a global variable named $0 (arbirary value, used as string) and puts the contents of $1 (arbitrary type) into it. Returns `:bool:false` if the variable existed previously and was updated, `:bool:true` if it was created.
+- `nolambda:global:get`: Returns the global variable named $0 (arbirary value, used as string). Causes an error if the variable does not exist.
+- `nolambda:global:exists`: Returns `:bool:true` if the global variable named $0 (arbirary value, used as string) exists, `:bool:false` else.
+- `nolambda:global:delete`: Deletes the global variable named $0 (arbirary value, used as string). Returns `:bool:true` if the variable existed previously, `:bool:false` else.
 
 ### `nolambda:random`
 

diff --git a/flow.c b/flow.c
new file mode 100644 (file)
index 0000000..ecf380c
--- /dev/null
+++ b/flow.c
@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "common/err.h"
+#include "api/vm.h"
+#include "api/nil.h"
+#include "api/str.h"
+
+UwUVMValue uwu_linear(UwUVMArgs *args)
+{
+       if (args->num < 1)
+               error("error: nolambda:flow:linear requires at least one argument");
+
+       size_t return_arg = args->num - 1;
+
+       for (size_t i = 0; i < return_arg; i++)
+               uwuvm_get_arg(args, i);
+
+       return uwuvm_clone_value(uwuvm_get_arg(args, return_arg));
+}
+
+UwUVMValue uwu_error(UwUVMArgs *args)
+{
+       if (args->num != 1)
+               error("error: nolambda:flow:error exactly one argument");
+
+       char *err = uwustr_get(uwuvm_get_arg(args, 0));
+       fprintf(stderr, "%s\n", err);
+       free(err);
+
+       exit(1);
+
+       return uwunil_create();
+}