diff options
Diffstat (limited to 'Tools/compiler')
| -rw-r--r-- | Tools/compiler/compiler/pycodegen.py | 73 |
1 files changed, 42 insertions, 31 deletions
diff --git a/Tools/compiler/compiler/pycodegen.py b/Tools/compiler/compiler/pycodegen.py index a697b55..b3223c1 100644 --- a/Tools/compiler/compiler/pycodegen.py +++ b/Tools/compiler/compiler/pycodegen.py @@ -105,6 +105,22 @@ class CodeGenerator: else: self.emit(prefix + '_GLOBAL', name) + def set_lineno(self, node): + """Emit SET_LINENO if node has lineno attribute + + Returns true if SET_LINENO was emitted. + + There are no rules for when an AST node should have a lineno + attribute. The transformer and AST code need to be reviewed + and a consistent policy implemented and documented. Until + then, this method works around missing line numbers. + """ + lineno = getattr(node, 'lineno', None) + if lineno is not None: + self.emit('SET_LINENO', lineno) + return 1 + return 0 + # The first few visitor methods handle nodes that generator new # code objects @@ -128,7 +144,7 @@ class CodeGenerator: gen = FunctionCodeGenerator(node, self.filename, isLambda) walk(node.code, gen) gen.finish() - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) for default in node.defaults: self.visit(default) self.emit('LOAD_CONST', gen.getCode()) @@ -138,7 +154,7 @@ class CodeGenerator: gen = ClassCodeGenerator(node, self.filename) walk(node.code, gen) gen.finish() - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('LOAD_CONST', node.name) for base in node.bases: self.visit(base) @@ -158,8 +174,7 @@ class CodeGenerator: numtests = len(node.tests) for i in range(numtests): test, suite = node.tests[i] - if hasattr(test, 'lineno'): - self.emit('SET_LINENO', test.lineno) + self.set_lineno(test) self.visit(test) ## if i == numtests - 1 and not node.else_: ## nextTest = end @@ -178,7 +193,7 @@ class CodeGenerator: self.nextBlock(end) def visitWhile(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) loop = self.newBlock() else_ = self.newBlock() @@ -189,7 +204,7 @@ class CodeGenerator: self.nextBlock(loop) self.loops.push(loop) - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.visit(node.test) self.emit('JUMP_IF_FALSE', else_ or after) @@ -212,12 +227,12 @@ class CodeGenerator: after = self.newBlock() self.loops.push(start) - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('SETUP_LOOP', after) self.visit(node.list) self.visit(ast.Const(0)) self.nextBlock(start) - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('FOR_LOOP', anchor) self.visit(node.assign) self.visit(node.body) @@ -233,7 +248,7 @@ class CodeGenerator: if not self.loops: raise SyntaxError, "'break' outside loop (%s, %d)" % \ (self.filename, node.lineno) - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('BREAK_LOOP') def visitContinue(self, node): @@ -241,7 +256,7 @@ class CodeGenerator: raise SyntaxError, "'continue' outside loop (%s, %d)" % \ (self.filename, node.lineno) l = self.loops.top() - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('JUMP_ABSOLUTE', l) self.nextBlock() @@ -291,7 +306,7 @@ class CodeGenerator: # XXX would be interesting to implement this via a # transformation of the AST before this stage end = self.newBlock() - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) # XXX __debug__ and AssertionError appear to be special cases # -- they are always loaded as globals even if there are local # names. I guess this is a sort of renaming op. @@ -309,7 +324,7 @@ class CodeGenerator: self.emit('POP_TOP') def visitRaise(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) n = 0 if node.expr1: self.visit(node.expr1) @@ -329,7 +344,7 @@ class CodeGenerator: lElse = self.newBlock() else: lElse = end - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('SETUP_EXCEPT', handlers) self.visit(node.body) self.emit('POP_BLOCK') @@ -339,8 +354,7 @@ class CodeGenerator: last = len(node.handlers) - 1 for i in range(len(node.handlers)): expr, target, body = node.handlers[i] - if hasattr(expr, 'lineno'): - self.emit('SET_LINENO', expr.lineno) + self.set_lineno(expr) if expr: self.emit('DUP_TOP') self.visit(expr) @@ -368,7 +382,7 @@ class CodeGenerator: def visitTryFinally(self, node): final = self.newBlock() - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('SETUP_FINALLY', final) self.visit(node.body) self.emit('POP_BLOCK') @@ -402,16 +416,16 @@ class CodeGenerator: self.loadName(node.name) def visitPass(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) def visitImport(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) for name in node.names: self.emit('IMPORT_NAME', name) self.storeName(name) def visitFrom(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.emit('IMPORT_NAME', node.modname) for name in node.names: if name == '*': @@ -426,7 +440,7 @@ class CodeGenerator: # next five implement assignments def visitAssign(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.visit(node.expr) dups = len(node.nodes) - 1 for i in range(len(node.nodes)): @@ -477,8 +491,7 @@ class CodeGenerator: def visitCallFunc(self, node): pos = 0 kw = 0 - if hasattr(node, 'lineno'): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.visit(node.node) for arg in node.args: self.visit(arg) @@ -496,7 +509,7 @@ class CodeGenerator: self.emit(opcode, kw << 8 | pos) def visitPrint(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) for child in node.nodes: self.visit(child) self.emit('PRINT_ITEM') @@ -506,7 +519,7 @@ class CodeGenerator: self.emit('PRINT_NEWLINE') def visitReturn(self, node): - self.emit('SET_LINENO', node.lineno) + self.set_lineno(node) self.visit(node.value) self.emit('RETURN_VALUE') @@ -637,15 +650,13 @@ class CodeGenerator: self.emit('BUILD_SLICE', len(node.nodes)) def visitDict(self, node): - # XXX is this a good general strategy? could it be done - # separately from the general visitor - lineno = getattr(node, 'lineno', None) - if lineno: - self.emit('SET_LINENO', lineno) + lineno = getattr(node, 'lineno', None) + if lineno: + set.emit('SET_LINENO', lineno) self.emit('BUILD_MAP', 0) for k, v in node.items: lineno2 = getattr(node, 'lineno', None) - if lineno != lineno2: + if lineno2 is not None and lineno != lineno2: self.emit('SET_LINENO', lineno2) lineno = lineno2 self.emit('DUP_TOP') @@ -687,7 +698,7 @@ class FunctionCodeGenerator(CodeGenerator): self.graph.setFlag(CO_VARARGS) if func.kwargs: self.graph.setFlag(CO_VARKEYWORDS) - self.emit('SET_LINENO', func.lineno) + self.set_lineno(func) if hasTupleArg: self.generateArgUnpack(func.argnames) |