Find the position just after the end of current parenthesized expression. Args: line: a CleansedLines line. startpos: start searching at this position. stack: nesting stack at startpos. Returns: On finding matching end: (index just after matching end, None) On
(line, startpos, stack)
| 2238 | |
| 2239 | |
| 2240 | def FindEndOfExpressionInLine(line, startpos, stack): |
| 2241 | """Find the position just after the end of current parenthesized expression. |
| 2242 | |
| 2243 | Args: |
| 2244 | line: a CleansedLines line. |
| 2245 | startpos: start searching at this position. |
| 2246 | stack: nesting stack at startpos. |
| 2247 | |
| 2248 | Returns: |
| 2249 | On finding matching end: (index just after matching end, None) |
| 2250 | On finding an unclosed expression: (-1, None) |
| 2251 | Otherwise: (-1, new stack at end of this line) |
| 2252 | """ |
| 2253 | for i in range(startpos, len(line)): |
| 2254 | char = line[i] |
| 2255 | if char in "([{": |
| 2256 | # Found start of parenthesized expression, push to expression stack |
| 2257 | stack.append(char) |
| 2258 | elif char == "<": |
| 2259 | # Found potential start of template argument list |
| 2260 | if i > 0 and line[i - 1] == "<": |
| 2261 | # Left shift operator |
| 2262 | if stack and stack[-1] == "<": |
| 2263 | stack.pop() |
| 2264 | if not stack: |
| 2265 | return (-1, None) |
| 2266 | elif i > 0 and re.search(r"\boperator\s*$", line[0:i]): |
| 2267 | # operator<, don't add to stack |
| 2268 | continue |
| 2269 | else: |
| 2270 | # Tentative start of template argument list |
| 2271 | stack.append("<") |
| 2272 | elif char in ")]}": |
| 2273 | # Found end of parenthesized expression. |
| 2274 | # |
| 2275 | # If we are currently expecting a matching '>', the pending '<' |
| 2276 | # must have been an operator. Remove them from expression stack. |
| 2277 | while stack and stack[-1] == "<": |
| 2278 | stack.pop() |
| 2279 | if not stack: |
| 2280 | return (-1, None) |
| 2281 | if ( |
| 2282 | (stack[-1] == "(" and char == ")") |
| 2283 | or (stack[-1] == "[" and char == "]") |
| 2284 | or (stack[-1] == "{" and char == "}") |
| 2285 | ): |
| 2286 | stack.pop() |
| 2287 | if not stack: |
| 2288 | return (i + 1, None) |
| 2289 | else: |
| 2290 | # Mismatched parentheses |
| 2291 | return (-1, None) |
| 2292 | elif char == ">": |
| 2293 | # Found potential end of template argument list. |
| 2294 | |
| 2295 | # Ignore "->" and operator functions |
| 2296 | if i > 0 and (line[i - 1] == "-" or re.search(r"\boperator\s*$", line[0 : i - 1])): |
| 2297 | continue |
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