Add example file for compiling native modules (hello.so).

.gitignore

@@ -2,6 +2,7 @@
 dst
 !*/**/dst
 /build
+/Build
 /Release
 /Debug
 /Emscripten

CMakeLists.txt

@@ -113,6 +113,7 @@ src/include/dst/dsttypes.h
 # Build the executable
 add_executable(${TARGET_NAME} ${REPL_SOURCES})
 if (UNIX AND NOT EMSCRIPTEN)
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -rdynamic")
 	target_link_libraries(${TARGET_NAME} m dl)
 endif (UNIX AND NOT EMSCRIPTEN)
 set_target_properties(${TARGET_NAME} PROPERTIES PUBLIC_HEADER "${DST_PUBLIC_HEADERS}")

Makefile

@@ -25,7 +25,11 @@
 PREFIX?=/usr/local
 BINDIR=$(PREFIX)/bin
 
-CFLAGS=-std=c99 -Wall -Wextra -Isrc/include -s -O3
+# CFLAGS=-std=c99 -Wall -Wextra -Isrc/include -Wl,--dynamic-list=src/exported.list -s -O3
+# TODO - when api is finalized, only export public symbols instead of using rdynamic
+# which exports all symbols.
+
+CFLAGS=-std=c99 -Wall -Wextra -Isrc/include -rdynamic -s -O3
 CLIBS=-lm -ldl
 PREFIX=/usr/local
 DST_TARGET=dst

natives/hello/Makefile

@@ -0,0 +1,32 @@
+# Copyright (c) 2018 Calvin Rose
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+CFLAGS=-std=c99 -Wall -Wextra -I../../src/include -s -O3
+TARGET=hello.so
+
+SOURCES=main.c
+
+$(TARGET): $(SOURCES)
+	$(CC) $(CFLAGS) -shared -fpic -o $@ $<
+
+clean:
+	rm $(TARGET)
+
+.PHONY: clean

natives/hello/main.c

@@ -0,0 +1,42 @@
+/*
+* Copyright (c) 2017 Calvin Rose
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to
+* deal in the Software without restriction, including without limitation the
+* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+* sell copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+* IN THE SOFTWARE.
+*/
+
+#include <dst/dst.h>
+
+static int hello(DstArgs args) {
+    (void) args;
+    printf("Hello, world!\n");
+    return 0;
+}
+
+/*****************************************************************************/
+
+static const DstReg cfuns[] = {
+    {"hello", hello},
+    {NULL, NULL}
+};
+
+int _dst_init(DstArgs args) {
+    DstTable *env = dst_env_arg(args);
+    dst_env_cfuns(env, cfuns);
+    return 0;
+}

script.dst

@@ -0,0 +1,3 @@
+(import "natives/hello/hello.so" :prefix "h/")
+
+(h/hello)

src/compiler/boot.dst

@@ -917,6 +917,9 @@ onvalue."
     (error (string "circular dependency: module " path " is loading")))
    (def check (get cache path))
    (if check check (do
+     (if (= ".so" (string-slice path -3 -1))
+      ((native path))
+      (do
        (def newenv (make-env))
        (put cache path newenv)
        (put loading path true)
@@ -925,7 +928,7 @@ onvalue."
        (run-context newenv chunks identity default-error-handler)
        (file-close f)
        (put loading path nil)
-     newenv)))))
+       newenv)))))))
 
 (defn import* [env path & args]
  (def newenv (require path))

src/core/native.c

@@ -37,7 +37,7 @@ typedef HINSTANCE Clib;
 typedef int Clib;
 #define load_clib(name) 0
 #define symbol_clib(lib, sym) 0
-#define error_clib() "could not load dynamic library"
+#define error_clib() "dynamic libraries not supported"
 #else
 #include <dlfcn.h>
 typedef void *Clib;

src/core/os.h

@@ -0,0 +1,33 @@
+/*
+* Copyright (c) 2017 Calvin Rose
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to
+* deal in the Software without restriction, including without limitation the
+* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+* sell copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+* IN THE SOFTWARE.
+*/
+
+#ifndef DST_OS_H
+#define DST_OS_H
+
+#include <dst/dst.h>
+
+int dst_os_execute(DstArgs args);
+int dst_os_getenv(DstArgs args);
+int dst_os_setenv(DstArgs args);
+int dst_os_exit(DstArgs args);
+
+#endif

src/exported.list

@@ -0,0 +1,240 @@
+{
+dst_array;
+dst_array_init;
+dst_array_deinit;
+dst_array_ensure;
+dst_array_setcount;
+dst_array_push;
+dst_array_pop;
+dst_array_peek;
+
+dst_buffer;
+dst_buffer_init;
+dst_buffer_deinit;
+dst_buffer_ensure;
+dst_buffer_extra;
+dst_buffer_push_bytes;
+dst_buffer_push_cstring;
+dst_buffer_push_u8;
+dst_buffer_push_u16;
+dst_buffer_push_u32;
+dst_buffer_push_u64;
+
+dst_tuple_begin;
+dst_tuple_end;
+dst_tuple_n;
+dst_tuple_equal;
+dst_tuple_compare;
+
+dst_string_begin;
+dst_string_end;
+dst_string;
+dst_cstring;
+dst_string_compare;
+dst_string_equal;
+dst_string_equalconst;
+dst_string_unique;
+dst_cstring_unique;
+dst_description;
+dst_to_string;
+dst_to_zerostring;
+dst_formatc;
+dst_puts;
+
+dst_symbol;
+dst_symbol_from_string;
+dst_csymbol;
+dst_symbol_gen;
+
+dst_struct_begin;
+dst_struct_put;
+dst_struct_end;
+dst_struct_get;
+dst_struct_next;
+dst_struct_to_table;
+dst_struct_equal;
+dst_struct_compare;
+dst_struct_find;
+
+dst_table;
+dst_table_init;
+dst_table_deinit;
+dst_table_get;
+dst_table_rawget;
+dst_table_remove;
+dst_table_put;
+dst_table_next;
+dst_table_to_struct;
+dst_table_merge_table;
+dst_table_merge_struct;
+dst_table_find;
+
+dst_fiber;
+
+dst_seq_view;
+dst_chararray_view;
+dst_hashtable_view;
+
+dst_abstract;
+
+dst_native;
+
+dst_mark;
+dst_sweep;
+dst_collect;
+dst_clear_memory;
+dst_gcroot;
+dst_gcunroot;
+dst_gcunrootall;
+dst_gclock;
+dst_gcunlock;
+
+dst_funcdef_alloc;
+dst_thunk;
+dst_verify;
+dst_quick_asm;
+
+dst_equals;
+dst_hash;
+dst_compare;
+dst_get;
+dst_put;
+dst_next;
+dst_length;
+dst_getindex;
+dst_setindex;
+dst_cstrcmp;
+
+dst_init;
+dst_deinit;
+dst_run;
+dst_resume;
+
+dst_env_def;
+dst_env_var;
+dst_env_cfuns;
+dst_env_resolve;
+dst_env_arg;
+
+dst_stl_env;
+
+dst_asm;
+dst_disasm;
+dst_asm_decode_instruction;
+dst_asm_cfun;
+dst_disasm_cfun;
+
+dst_lib_asm;
+
+dst_compile;
+
+dst_compile_cfun;
+dst_lib_compile;
+
+dst_stl_env;
+
+dst_dobytes;
+dst_dostring;
+
+dst_core_native;
+
+dst_int;
+dst_real;
+dst_add;
+dst_subtract;
+dst_multiply;
+dst_divide;
+dst_modulo;
+dst_rand;
+dst_srand;
+dst_strict_equal;
+dst_strict_notequal;
+dst_ascending;
+dst_descending;
+dst_notdescending;
+dst_notascending;
+dst_numeric_eq;
+dst_numeric_neq;
+dst_numeric_gt;
+dst_numeric_lt;
+dst_numeric_gte;
+dst_numeric_lte;
+dst_bor;
+dst_band;
+dst_bxor;
+dst_bnot;
+dst_lshift;
+dst_rshift;
+dst_lshiftu;
+dst_not;
+
+dst_cos;
+dst_sin;
+dst_tan;
+dst_acos;
+dst_asin;
+dst_atan;
+dst_exp;
+dst_log;
+dst_log10;
+dst_sqrt;
+dst_floor;
+dst_ceil;
+dst_pow;
+
+dst_core_print;
+dst_core_describe;
+dst_core_string;
+dst_core_symbol;
+dst_core_buffer;
+dst_core_tuple;
+dst_core_array;
+dst_core_table;
+dst_core_struct;
+dst_core_buffer;
+dst_core_gensym;
+dst_core_length;
+dst_core_get;
+dst_core_rawget;
+dst_core_getproto;
+dst_core_setproto;
+dst_core_put;
+dst_core_type;
+dst_core_next;
+dst_core_hash;
+dst_core_string_slice;
+
+dst_core_gccollect;
+dst_core_gcsetinterval;
+dst_core_gcinterval;
+
+dst_lib_io;
+dst_lib_math;
+dst_lib_array;
+dst_lib_tuple;
+dst_lib_buffer;
+dst_lib_table;
+dst_lib_fiber;
+dst_lib_os;
+
+dst_ast_wrap;
+dst_ast_node;
+dst_ast_unwrap1;
+dst_ast_unwrap;
+
+dst_scan_number;
+dst_scan_integer;
+dst_scan_real;
+
+dst_parser_init;
+dst_parser_deinit;
+dst_parser_consume;
+dst_parser_status;
+dst_parser_produce;
+dst_parser_error;
+
+dst_parse_cfun;
+
+dst_lib_parse;
+
+};