Add "import" syntax

README.md

@@ -42,6 +42,6 @@ Examples:
  - FUNCTIONS 用户预定义的函数，动态生成/分析.
  - MAIN 主程序，也就是int main.
 ## 五、目前进度
-函数，变量，循环，条件判断
+函数，变量，循环，条件判断，导入
 ## 六、待办事项
 去除let语句，自动检测目标值类型

configure-sblang2c-alias

@@ -0,0 +1,4 @@
+#!/usr/bin/bash
+echo "Add this to your ~/.bashrc or ~/.zshrc or another shell's 'read command' file."
+WORKDIR=$(pwd)
+echo "alias sblang2c=\"python3 $WORKDIR/sblang2c.py\""

converter.py

@@ -1,5 +1,6 @@
 from uuid import uuid4
 from logging import debug
+from os import path
 
 class Function:
     def __init__(self):
@@ -94,6 +95,11 @@ def let(runtime,line):
         return f"{typeof} {name};"
     content=line[1].split(" ",2)[2]
     return f"{typeof} {name}={content};"
+def fromimport(runtime,line):
+    runtime.externs.add(line[1])
+def export(runtime,line):
+    line=line[1].split(" ")
+    return "extern \"C\" {"+f"{line[0]} {line[1]}"+";}"
 bulitins=(
     {
         "end":"}",
@@ -109,7 +115,9 @@ def let(runtime,line):
         "var":var,
         "let":let,
         "define":define,
-        "return":returns
+        "return":returns,
+        "import":fromimport,
+        "export":export
     }
 )
 COMMENT="""
@@ -156,7 +164,7 @@ def translate(self,runtime,line):
 )
 class Runtime:
     def __init__(self):
-        self.heads,self.head,self.externs,self.functions,self.main,self.global_checker,self.cache=set(),[],[],[],[],[],{}
+        self.heads,self.head,self.externs,self.functions,self.main,self.global_checker,self.cache=set(),[],set(),[],[],[],{}
         self.type_detector={}
         self.loops={}
     def translate(self,line,run_checkers=True,return_code=False):
@@ -186,7 +194,8 @@ def export_final(self):
         debug(f"Headers: {self.heads}")
         for i in self.heads:
             final+=f"#include <{i}>\n"
-        final+="\n\n".join(self.head+self.externs+self.functions+self.main)
+        final+="\n\n".join(self.head+self.functions+self.main)
+        self.externs=list(self.externs)
         return final
 
 

sblang2c.py

@@ -1,4 +1,4 @@
-import converter,sys,os,time,logging
+import converter,sys,os,time,logging,secrets
 class Timer:
     def __init__(self) -> None:
         self.stt=0
@@ -15,6 +15,7 @@ def end(self):
 debug="--debug" in argss
 gcc_executable="g++"
 gcc_extra_args=[]
+temps=[]
 name_executeable=".".join(filename.split(".")[:-1])
 for arg in argss:
     arg=arg.split("=",1)
@@ -59,20 +60,62 @@ def end(self):
 if debug:
     print()
 print(f" {timer.end()} ms")
+
+print('-| Resolving externs')
+links=[]
+mapping={}
+if len(runtime.externs) == 0:
+    print("-| No externs")
+else:
+    runtime.externs=list(runtime.externs)
+    print(f"-| Compiling {len(runtime.externs)} head(s)")
+    for count in range(1,len(runtime.externs)+1):
+        print(f"- -|{count}/{len(runtime.externs)}: {runtime.externs[count-1]}")
+        filename=f"_sblang_header_{secrets.token_hex(16)}.h"
+        temps.append(filename)
+        with open(runtime.externs[count-1],"r",encoding="utf-8") as f:
+            modcode=f.read()
+        with open(filename,"w+") as f:
+            rt=converter.Runtime()
+            try:
+                for i in modcode.splitlines():
+                    rt.translate(i)
+            except BaseException as e:
+                print(f"\n! Error when converting: {e}")
+                from traceback import print_exc
+                print_exc()
+                exit(1)
+            rt.heads=[]
+            f.write(rt.export_final())
+            if rt.externs != []:
+                print("WARN: Multi-layer extern is not supported yet")
+        mapping.update({runtime.externs[count-1]:filename})
+        print(f"- -|{count}/{len(runtime.externs)}: {runtime.externs[count-1]}: Success")
+new=[]
+for i in runtime.externs:
+    data=mapping.get(i,i)
+    if data != i:
+        data=os.getcwd()+"/"+data
+    runtime.heads.add(data)
 print("- -| Writing to temp file",end="",flush=True)
 timer.start()
 if debug:
     print()
 with open("_sblang_temp.cpp","w+",encoding="utf-8") as f:
     f.write(runtime.export_final())
+temps.append("_sblang_temp.cpp")
 if debug:
     print()
 print(f" {timer.end()} ms")
 if nocomp:
     print("-| Exiting.")
     exit(0)
+time.sleep(1)
 print("-| Compiling with g++")
-command=f"{gcc_executable} _sblang_temp.cpp -finput-charset=UTF-8 -std=c++20 -o {name_executeable}"
+command=f"{gcc_executable} _sblang_temp.cpp "
+for i in links:
+    command+=f"{i} "
+command+=f"-finput-charset=UTF-8 -std=c++20 -o {name_executeable}"
 if gcc_extra_args != []:
     for i in gcc_extra_args:
         command+=" "+i
@@ -87,5 +130,6 @@ def end(self):
 gcc.read()
 print(f" {timer.end()} ms")
 print("-| Removeing Tempfile")
-os.remove("_sblang_temp.cpp")
+for temp in temps:
+    os.remove(temp)
 print("-| Exiting Compile.")

test_import.sbl

@@ -0,0 +1,5 @@
+main
+    import test_import_head.sbl
+    output "1+1="
+    output plusOne(1)
+end

test_import_head.sbl

@@ -0,0 +1,3 @@
+define plusOne num
+    return (1+num)
+define end