|
| 1 | +#!/usr/bin/env python3 |
| 2 | +""" |
| 3 | +Fix brace placement to Allman style for class/interface/enum/method/ |
| 4 | +constructor definitions. Also moves 'throws' clauses to their own |
| 5 | +line (single-indented from method base). |
| 6 | +
|
| 7 | +Leaves control flow blocks (if/else/for/while/try/catch/finally/ |
| 8 | +switch/synchronized/do/lambda) with same-line braces. |
| 9 | +""" |
| 10 | + |
| 11 | +import os |
| 12 | +import re |
| 13 | +import sys |
| 14 | + |
| 15 | +CONTROL_PREFIXES = [ |
| 16 | + 'if ', 'if(', |
| 17 | + 'else {', 'else{', 'else if ', 'else if(', |
| 18 | + 'for ', 'for(', |
| 19 | + 'while ', 'while(', |
| 20 | + 'do {', 'do{', |
| 21 | + 'try {', 'try{', 'try (', |
| 22 | + 'catch ', 'catch(', |
| 23 | + 'finally {', 'finally{', |
| 24 | + 'switch ', 'switch(', |
| 25 | + 'synchronized ', 'synchronized(', |
| 26 | +] |
| 27 | + |
| 28 | +CONTINUATION_STARTS = [ |
| 29 | + '||', '&&', '+', '-', '?', ':', '.', |
| 30 | + '|', '&', '^', |
| 31 | +] |
| 32 | + |
| 33 | + |
| 34 | +def is_control_flow_or_special(stripped): |
| 35 | + """Return True if this line should keep same-line braces.""" |
| 36 | + test = stripped |
| 37 | + if test.startswith('}'): |
| 38 | + test = test[1:].strip() |
| 39 | + |
| 40 | + for prefix in CONTROL_PREFIXES: |
| 41 | + if test.startswith(prefix): |
| 42 | + return True |
| 43 | + |
| 44 | + if '-> {' in stripped or '->{' in stripped: |
| 45 | + return True |
| 46 | + |
| 47 | + if test == 'static {' or test == 'static{': |
| 48 | + return True |
| 49 | + |
| 50 | + if re.search(r'\bnew\s+\w', stripped) and stripped.endswith(') {'): |
| 51 | + return True |
| 52 | + |
| 53 | + if re.search(r'=\s*\{$', stripped): |
| 54 | + return True |
| 55 | + |
| 56 | + if re.match(r'^[A-Z_][A-Z_0-9]*\s*\(.*\)\s*\{$', test): |
| 57 | + return True |
| 58 | + |
| 59 | + return False |
| 60 | + |
| 61 | + |
| 62 | +def is_class_interface_enum(stripped): |
| 63 | + """Return True if this is a class/interface/enum definition.""" |
| 64 | + return bool(re.search( |
| 65 | + r'\b(class|interface|enum)\s+\w+', stripped |
| 66 | + )) |
| 67 | + |
| 68 | + |
| 69 | +def is_continuation_line(stripped): |
| 70 | + """Return True if this line starts with a continuation operator.""" |
| 71 | + for op in CONTINUATION_STARTS: |
| 72 | + if stripped.startswith(op): |
| 73 | + return True |
| 74 | + return False |
| 75 | + |
| 76 | + |
| 77 | +def find_base_indent(lines, line_idx, current_indent): |
| 78 | + """Scan backward to find the method's base indentation.""" |
| 79 | + current_indent_len = len(current_indent) |
| 80 | + |
| 81 | + for j in range(line_idx - 1, -1, -1): |
| 82 | + prev = lines[j] |
| 83 | + prev_stripped = prev.strip() |
| 84 | + |
| 85 | + if not prev_stripped or prev_stripped.startswith('*') \ |
| 86 | + or prev_stripped.startswith('//') \ |
| 87 | + or prev_stripped.startswith('@'): |
| 88 | + continue |
| 89 | + |
| 90 | + prev_rstripped = prev.rstrip('\n').rstrip('\r') |
| 91 | + prev_indent = prev_rstripped[:len(prev_rstripped) |
| 92 | + - len(prev_rstripped.lstrip())] |
| 93 | + if len(prev_indent) < current_indent_len: |
| 94 | + return prev_indent |
| 95 | + |
| 96 | + return current_indent |
| 97 | + |
| 98 | + |
| 99 | +def process_file(filepath): |
| 100 | + """Process a single Java file.""" |
| 101 | + with open(filepath, 'r', encoding='utf-8') as f: |
| 102 | + lines = f.readlines() |
| 103 | + |
| 104 | + new_lines = [] |
| 105 | + changed = False |
| 106 | + in_block_comment = False |
| 107 | + |
| 108 | + for i, line in enumerate(lines): |
| 109 | + rstripped = line.rstrip('\n').rstrip('\r') |
| 110 | + stripped = rstripped.strip() |
| 111 | + |
| 112 | + if '/*' in stripped and '*/' not in stripped: |
| 113 | + in_block_comment = True |
| 114 | + if '*/' in stripped: |
| 115 | + in_block_comment = False |
| 116 | + |
| 117 | + if in_block_comment or stripped.startswith('*') \ |
| 118 | + or stripped.startswith('//'): |
| 119 | + new_lines.append(line) |
| 120 | + continue |
| 121 | + |
| 122 | + # Only process lines ending with ' {' or '\t{' |
| 123 | + if not rstripped.endswith(' {') \ |
| 124 | + and not rstripped.endswith('\t{'): |
| 125 | + new_lines.append(line) |
| 126 | + continue |
| 127 | + |
| 128 | + indent = rstripped[:len(rstripped) - len(rstripped.lstrip())] |
| 129 | + |
| 130 | + # Skip control flow and special blocks |
| 131 | + if is_control_flow_or_special(stripped): |
| 132 | + new_lines.append(line) |
| 133 | + continue |
| 134 | + |
| 135 | + # Skip continuation lines |
| 136 | + if is_continuation_line(stripped): |
| 137 | + new_lines.append(line) |
| 138 | + continue |
| 139 | + |
| 140 | + needs_allman = False |
| 141 | + brace_indent = indent |
| 142 | + |
| 143 | + # Case 1: Class/interface/enum definition |
| 144 | + if is_class_interface_enum(stripped): |
| 145 | + needs_allman = True |
| 146 | + brace_indent = indent |
| 147 | + |
| 148 | + # Case 2: Method/constructor with ') throws ... {' |
| 149 | + # e.g.: "public void foo() throws Exception {" |
| 150 | + elif re.search( |
| 151 | + r'\)\s+throws\s+[\w.,\s<>\[\]]+\{$', stripped): |
| 152 | + needs_allman = True |
| 153 | + # Extract everything before 'throws' |
| 154 | + m = re.search(r'^(.*\))\s+(throws\s+.+?)\s*\{$', |
| 155 | + rstripped) |
| 156 | + if m: |
| 157 | + method_part = m.group(1) # "...foo()" |
| 158 | + throws_part = m.group(2) # "throws Exception" |
| 159 | + # Find base indent |
| 160 | + if '(' in method_part.strip(): |
| 161 | + brace_indent = indent |
| 162 | + else: |
| 163 | + brace_indent = find_base_indent( |
| 164 | + lines, i, indent) |
| 165 | + throws_indent = brace_indent + ' ' |
| 166 | + new_lines.append(method_part + '\n') |
| 167 | + new_lines.append(throws_indent + throws_part |
| 168 | + + '\n') |
| 169 | + new_lines.append(brace_indent + '{\n') |
| 170 | + changed = True |
| 171 | + continue |
| 172 | + |
| 173 | + # Case 3: Method/constructor ending with ') {' |
| 174 | + elif stripped.endswith(') {'): |
| 175 | + needs_allman = True |
| 176 | + if '(' in stripped: |
| 177 | + brace_indent = indent |
| 178 | + else: |
| 179 | + brace_indent = find_base_indent( |
| 180 | + lines, i, indent) |
| 181 | + |
| 182 | + # Case 4: Throws on a continuation line ending with '{' |
| 183 | + # e.g. line is " throws SQLException {" |
| 184 | + elif re.match(r'^\s*throws\s+[\w.,\s<>\[\]]+\{$', |
| 185 | + rstripped): |
| 186 | + needs_allman = True |
| 187 | + brace_indent = find_base_indent(lines, i, indent) |
| 188 | + |
| 189 | + if needs_allman: |
| 190 | + content = rstripped.rstrip() |
| 191 | + if content.endswith(' {'): |
| 192 | + content = content[:-2].rstrip() |
| 193 | + elif content.endswith('\t{'): |
| 194 | + content = content[:-2].rstrip() |
| 195 | + elif content.endswith('{'): |
| 196 | + content = content[:-1].rstrip() |
| 197 | + |
| 198 | + new_lines.append(content + '\n') |
| 199 | + new_lines.append(brace_indent + '{\n') |
| 200 | + changed = True |
| 201 | + else: |
| 202 | + new_lines.append(line) |
| 203 | + |
| 204 | + if changed: |
| 205 | + with open(filepath, 'w', encoding='utf-8') as f: |
| 206 | + f.writelines(new_lines) |
| 207 | + return True |
| 208 | + return False |
| 209 | + |
| 210 | + |
| 211 | +def main(): |
| 212 | + src_dir = 'src/main/java' |
| 213 | + if not os.path.isdir(src_dir): |
| 214 | + print(f"ERROR: {src_dir} not found. Run from project root.") |
| 215 | + sys.exit(1) |
| 216 | + |
| 217 | + total_files = 0 |
| 218 | + changed_files = 0 |
| 219 | + |
| 220 | + for root, dirs, files in os.walk(src_dir): |
| 221 | + for fname in sorted(files): |
| 222 | + if not fname.endswith('.java'): |
| 223 | + continue |
| 224 | + filepath = os.path.join(root, fname) |
| 225 | + total_files += 1 |
| 226 | + if process_file(filepath): |
| 227 | + changed_files += 1 |
| 228 | + print(f" Fixed: {filepath}") |
| 229 | + |
| 230 | + print(f"\nProcessed {total_files} files, " |
| 231 | + f"modified {changed_files} files.") |
| 232 | + |
| 233 | + |
| 234 | +if __name__ == '__main__': |
| 235 | + main() |
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