Generating meta data

meta_run.py

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+import subprocess
+import sys
+import os
+
+
+files = ["core_compiler.cpp", "core_compiler.h"]
+
+for file_to_modify in files:
+    fd = open(file_to_modify, "r+")
+    f = fd.read()
+    END = "/*END*/"
+    START = "/*#"
+    STOP = "*/"
+
+    program_counter = 0
+    valid = True
+    index = 0
+    while True:
+        begin = f.find(START, index)
+        if begin == -1:
+            break
+        index = begin
+        begin += 3
+
+        end = f.find(STOP, index)
+        if end == -1:
+            valid = False
+            print(f"One of the registered comments inside {file_to_modify} doesn't have an end")
+            break
+
+        gen_end = f.find(END, end)
+        next_block = f.find(START, end)
+        if next_block != -1 and gen_end > next_block:
+            gen_end = -1
+
+        before = f[:begin]
+        program = f[begin:end]
+        if gen_end == -1:
+            after = f[end+2:]
+        else:
+            after = f[gen_end+len(END):]
+
+        temp_filename = "_metaprogram" + str(program_counter) + ".py"
+        if os.path.isfile(temp_filename):
+            print(temp_filename + " exists, dont want to risk overwriting something important")
+            valid = False
+            break
+        program_counter += 1
+        with open(temp_filename, "w") as meta_file:
+            meta_file.write(program)
+
+        result = subprocess.run(["py", temp_filename], stdout=subprocess.PIPE)
+        program_result = result.stdout.decode('utf-8').replace('\r\n', '\n') + END
+        f = before + program + "*/\n" + program_result + after
+        os.remove(temp_filename)
+
+        index = end
+
+    if valid:
+        fd.seek(0)
+        fd.write(f)
+        fd.truncate()
+    fd.close()