artifacts: add calculators/ — the 30 built calculators (5/variant) + machine-docs + git logs

2026-06-16 15:39:42 +00:00
parent 64bc360fc0
commit bb85aa9f11
728 changed files with 34148 additions and 0 deletions
@@ -0,0 +1,62 @@
+from dataclasses import dataclass
+from typing import Union
+
+
+class LexError(Exception):
+    pass
+
+
+@dataclass
+class Token:
+    kind: str
+    value: Union[int, float, str, None]
+
+
+def tokenize(src: str) -> list:
+    tokens = []
+    i = 0
+    while i < len(src):
+        ch = src[i]
+
+        if ch in ' \t':
+            i += 1
+            continue
+
+        if ch.isdigit() or (ch == '.' and i + 1 < len(src) and src[i + 1].isdigit()):
+            j = i
+            while j < len(src) and src[j].isdigit():
+                j += 1
+            if j < len(src) and src[j] == '.':
+                j += 1
+                while j < len(src) and src[j].isdigit():
+                    j += 1
+                value = float(src[i:j])
+            else:
+                value = int(src[i:j])
+            tokens.append(Token('NUMBER', value))
+            i = j
+            continue
+
+        if ch == '+':
+            tokens.append(Token('PLUS', '+'))
+            i += 1
+        elif ch == '-':
+            tokens.append(Token('MINUS', '-'))
+            i += 1
+        elif ch == '*':
+            tokens.append(Token('STAR', '*'))
+            i += 1
+        elif ch == '/':
+            tokens.append(Token('SLASH', '/'))
+            i += 1
+        elif ch == '(':
+            tokens.append(Token('LPAREN', '('))
+            i += 1
+        elif ch == ')':
+            tokens.append(Token('RPAREN', ')'))
+            i += 1
+        else:
+            raise LexError(f"unexpected character {ch!r} at position {i}")
+
+    tokens.append(Token('EOF', None))
+    return tokens