Generating meta data

.gitignore

@@ -8,3 +8,4 @@
 
 *.c
 backup*
+__pycache__

core_compiler.cpp

@@ -32,29 +32,45 @@ lex_init(Allocator *token_string_arena, Allocator *map_allocator, Lexer *l){
   intern_flag              = l->intern("flag"_s);
   intern_it                = l->intern("it"_s);
 
-  op_add                   = l->intern("+"_s);
+/*#
+import meta
+
+for i in meta.token_simple_expr:
+  if i[1] != "SPECIAL":
+    print("op_" + meta.pascal_to_snake(i[0]) + f' = l->intern("{i[1]}"_s);')
+
+first = "op_" + meta.pascal_to_snake(meta.token_simple_expr[0][0])
+last = "op_"  + meta.pascal_to_snake(meta.token_simple_expr[-1][0])
+print(f"l->first_op = {first}")
+print(f"l->last_op = {last}")
+*/
 op_mul = l->intern("*"_s);
 op_div = l->intern("/"_s);
+op_mod = l->intern("%"_s);
+op_left_shift = l->intern("<<"_s);
+op_right_shift = l->intern(">>"_s);
+op_add = l->intern("+"_s);
 op_sub = l->intern("-"_s);
-  op_and                   = l->intern("&&"_s);
-  op_bitand                = l->intern("&"_s);
-  op_or                    = l->intern("||"_s);
-  op_bitor                 = l->intern("|"_s);
-  op_xor                   = l->intern("^"_s);
 op_equals = l->intern("=="_s);
-  op_not_equals            = l->intern("!="_s);
 op_lesser_then_or_equal = l->intern("<="_s);
 op_greater_then_or_equal = l->intern(">="_s);
 op_lesser_then = l->intern("<"_s);
 op_greater_then = l->intern(">"_s);
-  op_left_shift            = l->intern("<<"_s);
-  op_right_shift           = l->intern(">>"_s);
-  op_not                   = l->intern("!"_s);
+op_not_equals = l->intern("!="_s);
+op_bit_and = l->intern("&"_s);
+op_bit_or = l->intern("|"_s);
+op_bit_xor = l->intern("^"_s);
+op_and = l->intern("&&"_s);
+op_or = l->intern("||"_s);
 op_neg = l->intern("~"_s);
+op_not = l->intern("!"_s);
 op_decrement = l->intern("--"_s);
 op_increment = l->intern("++"_s);
-  l->first_op = op_add;
-  l->last_op  = op_increment;
+op_post_decrement = l->intern("--"_s);
+op_post_increment = l->intern("++"_s);
+l->first_op = op_mul
+l->last_op = op_post_increment
+/*END*/
 }
 
 function void

core_compiler.h

@@ -7,57 +7,61 @@ struct Ast_Type;
 struct Ast;
 struct Ast_Expr;
 
+
 enum Token_Kind{
   TK_End,
 
-  TK_Mul,
-  TK_Div,
-  TK_Mod,
-  TK_LeftShift,
-  TK_RightShift,
-  TK_FirstMul = TK_Mul,
-  TK_LastMul = TK_RightShift,
-
-  TK_Add,
-  TK_Sub,
-  TK_FirstAdd = TK_Add,
-  TK_LastAdd = TK_Sub,
-
-  TK_Equals,
-  TK_LesserThenOrEqual,
-  TK_GreaterThenOrEqual,
-  TK_LesserThen,
-  TK_GreaterThen,
-  TK_NotEquals,
-  TK_FirstCompare = TK_Equals,
-  TK_LastCompare = TK_NotEquals,
-
-  TK_BitAnd,
-  TK_BitOr,
-  TK_BitXor,
-  TK_And,
-  TK_Or,
-  TK_FirstLogical = TK_BitAnd,
-  TK_LastLogical = TK_Or,
-
-  TK_Neg,
-  TK_Not,
-
-  TK_Assign,
-  TK_ColonAssign,
-  TK_DivAssign,
-  TK_MulAssign,
-  TK_ModAssign,
-  TK_SubAssign,
-  TK_AddAssign,
-  TK_AndAssign,
-  TK_OrAssign,
-  TK_XorAssign,
-  TK_LeftShiftAssign,
-  TK_RightShiftAssign,
-  TK_FirstAssign = TK_Assign,
-  TK_LastAssign = TK_RightShiftAssign,
-
+/*#
+import meta
+for i in meta.token_kinds:
+  print("  " + i[0] + ",")
+*/
+  Mul,
+  Div,
+  Mod,
+  LeftShift,
+  RightShift,
+  FirstMul = TK_Mul,
+  LastMul = TK_RightShift,
+  Add,
+  Sub,
+  FirstAdd = TK_Add,
+  LastAdd = TK_Sub,
+  Equals,
+  LesserThenOrEqual,
+  GreaterThenOrEqual,
+  LesserThen,
+  GreaterThen,
+  NotEquals,
+  FirstCompare = TK_Equals,
+  LastCompare = TK_NotEquals,
+  BitAnd,
+  BitOr,
+  BitXor,
+  And,
+  Or,
+  FirstLogical = TK_BitAnd,
+  LastLogical = TK_Or,
+  Neg,
+  Not,
+  Decrement,
+  Increment,
+  PostDecrement,
+  PostIncrement,
+  Assign,
+  ColonAssign,
+  DivAssign,
+  MulAssign,
+  ModAssign,
+  SubAssign,
+  AddAssign,
+  AndAssign,
+  OrAssign,
+  XorAssign,
+  LeftShiftAssign,
+  RightShiftAssign,
+  FirstAssign = TK_Assign,
+  LastAssign = TK_RightShiftAssign,
   TK_OpenParen,
   TK_CloseParen,
   TK_OpenBrace,
@@ -71,17 +75,10 @@ enum Token_Kind{
   TK_Semicolon,
   TK_Dot,
   TK_TwoDots,
-
   TK_NewLine,
   TK_Colon,
-
   TK_DoubleColon,
   TK_At,
-  TK_Decrement,
-  TK_Increment,
-  TK_PostDecrement,
-  TK_PostIncrement,
-
   TK_Arrow,
   TK_ExprSizeof,
   TK_DocComment,
@@ -93,6 +90,7 @@ enum Token_Kind{
   TK_Float,
   TK_Integer,
   TK_Keyword,
+/*END*/
 
   TK_Pointer     = TK_Mul,
   TK_Dereference = TK_BitAnd,

meta.py

@@ -0,0 +1,92 @@
+import re
+snake_case_pattern = re.compile(r'(?<!^)(?=[A-Z])')
+
+def pascal_to_snake(v):
+  name = snake_case_pattern.sub('_', v).lower()
+  return name
+
+token_simple_expr = [
+  ["Mul", "*"],
+  ["Div", "/"],
+  ["Mod", "%"],
+  ["LeftShift", "<<"],
+  ["RightShift", ">>"],
+  ["FirstMul = TK_Mul", "SPECIAL"],
+  ["LastMul = TK_RightShift", "SPECIAL"],
+  ["Add", "+"],
+  ["Sub", "-"],
+  ["FirstAdd = TK_Add", "SPECIAL"],
+  ["LastAdd = TK_Sub", "SPECIAL"],
+  ["Equals", "=="],
+  ["LesserThenOrEqual", "<="],
+  ["GreaterThenOrEqual", ">="],
+  ["LesserThen", "<"],
+  ["GreaterThen", ">"],
+  ["NotEquals", "!="],
+  ["FirstCompare = TK_Equals", "SPECIAL"],
+  ["LastCompare = TK_NotEquals", "SPECIAL"],
+  ["BitAnd", "&"],
+  ["BitOr", "|"],
+  ["BitXor", "^"],
+  ["And", "&&"],
+  ["Or", "||"],
+  ["FirstLogical = TK_BitAnd", "SPECIAL"],
+  ["LastLogical = TK_Or", "SPECIAL"],
+
+  ["Neg", "~"],
+  ["Not", "!"],
+  ["Decrement", "--"],
+  ["Increment", "++"],
+  ["PostDecrement", "--"],
+  ["PostIncrement", "++"],
+]
+
+token_assign_expr = [
+  ["Assign", "="],
+  ["ColonAssign", ":="],
+  ["DivAssign", "/="],
+  ["MulAssign", "*="],
+  ["ModAssign", "%="],
+  ["SubAssign", "-="],
+  ["AddAssign", "+="],
+  ["AndAssign", "&="],
+  ["OrAssign", "|="],
+  ["XorAssign", "^="],
+  ["LeftShiftAssign", "<<="],
+  ["RightShiftAssign", ">>="],
+  ["FirstAssign = TK_Assign", "SPECIAL"],
+  ["LastAssign = TK_RightShiftAssign", "SPECIAL"],
+]
+
+token_rest = [
+  ["TK_OpenParen", "("],
+  ["TK_CloseParen", ")"],
+  ["TK_OpenBrace", "{"],
+  ["TK_CloseBrace", "}"],
+  ["TK_OpenBracket", "["],
+  ["TK_CloseBracket", "]"],
+  ["TK_Comma", ","],
+  ["TK_Pound", "#"],
+  ["TK_Question", "?"],
+  ["TK_ThreeDots", "..."],
+  ["TK_Semicolon", ";"],
+  ["TK_Dot", "."],
+  ["TK_TwoDots", ".."],
+  ["TK_NewLine", "[NewLine]"],
+  ["TK_Colon", ":"],
+  ["TK_DoubleColon", "::"],
+  ["TK_At", "@"],
+  ["TK_Arrow", "->"],
+  ["TK_ExprSizeof", "[SizeOf]"],
+  ["TK_DocComment", "[///]"],
+  ["TK_Comment", "//"],
+  ["TK_Identifier", "[Ident]"],
+  ["TK_UnicodeLit", "[Unicode]"],
+  ["TK_StringLit", "[String]"],
+  ["TK_Error", "[Error]"],
+  ["TK_Float", "[Float]"],
+  ["TK_Integer", "[Int]"],
+  ["TK_Keyword", "[Keyword]"],
+]
+
+token_kinds = token_simple_expr + token_assign_expr + token_rest

meta_run.py

@@ -0,0 +1,63 @@
+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()