1 files changed, 95 insertions, 0 deletions
diff --git a/editor/template_builders.py b/editor/template_builders.py
new file mode 100644
index 0000000000..efed567d46
--- /dev/null
+++ b/editor/template_builders.py
@@ -0,0 +1,95 @@
+"""Functions used to generate source files during build time
+All such functions are invoked in a subprocess on Windows to prevent build flakiness.
+"""
+
+import os
+from io import StringIO
+from platform_methods import subprocess_main
+
+
+def parse_template(inherits, source, delimiter):
+    script_template = {
+        "inherits": inherits,
+        "name": "",
+        "description": "",
+        "version": "",
+        "script": "",
+        "space-indent": "4",
+    }
+    meta_prefix = delimiter + " meta-"
+    meta = ["name", "description", "version", "space-indent"]
+
+    with open(source) as f:
+        lines = f.readlines()
+        for line in lines:
+            if line.startswith(meta_prefix):
+                line = line[len(meta_prefix) :]
+                for m in meta:
+                    if line.startswith(m):
+                        strip_lenght = len(m) + 1
+                        script_template[m] = line[strip_lenght:].strip()
+            else:
+                script_template["script"] += line
+        if script_template["space-indent"] != "":
+            indent = " " * int(script_template["space-indent"])
+            script_template["script"] = script_template["script"].replace(indent, "_TS_")
+        if script_template["name"] == "":
+            script_template["name"] = os.path.splitext(os.path.basename(source))[0].replace("_", " ").title()
+        script_template["script"] = (
+            script_template["script"].replace('"', '\\"').lstrip().replace("\n", "\\n").replace("\t", "_TS_")
+        )
+        return (
+            '{ String("'
+            + script_template["inherits"]
+            + '"), String("'
+            + script_template["name"]
+            + '"),  String("'
+            + script_template["description"]
+            + '"),  String("'
+            + script_template["script"]
+            + '")'
+            + " },\n"
+        )
+
+
+def make_templates(target, source, env):
+    dst = target[0]
+    s = StringIO()
+    s.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n\n")
+    s.write("#ifndef _CODE_TEMPLATES_H\n")
+    s.write("#define _CODE_TEMPLATES_H\n\n")
+    s.write('#include "core/object/object.h"\n')
+    s.write('#include "core/object/script_language.h"\n')
+
+    delimiter = "#"  # GDScript single line comment delimiter by default.
+    if source:
+        ext = os.path.splitext(source[0])[1]
+        if ext == ".cs":
+            delimiter = "//"
+
+    parsed_template_string = ""
+    number_of_templates = 0
+
+    for filepath in source:
+        node_name = os.path.basename(os.path.dirname(filepath))
+        parsed_template = parse_template(node_name, filepath, delimiter)
+        parsed_template_string += "\t" + parsed_template
+        number_of_templates += 1
+
+    s.write("\nstatic const int TEMPLATES_ARRAY_SIZE = " + str(number_of_templates) + ";\n")
+    s.write("\nstatic const struct ScriptLanguage::ScriptTemplate TEMPLATES[" + str(number_of_templates) + "] = {\n")
+
+    s.write(parsed_template_string)
+
+    s.write("};\n")
+
+    s.write("\n#endif\n")
+
+    with open(dst, "w") as f:
+        f.write(s.getvalue())
+
+    s.close()
+
+
+if __name__ == "__main__":
+    subprocess_main(globals())