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Code Issues Releases Wiki Activity

Generate FOR_ITER-based loops instead of old FOR_LOOP-based loops

This commit is contained in:
Jeremy Hylton 2001-08-28 16:35:18 +00:00
parent 318e167e98
commit f354575328
2 changed files with 18 additions and 10 deletions
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14
Lib/compiler/pycodegen.py
View File

@ -355,11 +355,11 @@ class CodeGenerator:
self.set_lineno(node)
self.emit('SETUP_LOOP', after)
self.visit(node.list)
self.visit(ast.Const(0))
self.emit('GET_ITER')
self.nextBlock(start)
self.set_lineno(node, force=1)
self.emit('FOR_LOOP', anchor)
self.nextBlock()
self.emit('FOR_ITER', anchor)
self.visit(node.assign)
self.visit(node.body)
self.emit('JUMP_ABSOLUTE', start)
@ -567,7 +567,8 @@ class CodeGenerator:
self.nextBlock(next)
else:
self.nextBlock()
self.emit('POP_TOP')
if expr: # XXX
self.emit('POP_TOP')
self.emit('END_FINALLY')
if node.else_:
self.nextBlock(lElse)
@ -1001,7 +1002,10 @@ class NestedScopeCodeGenerator(CodeGenerator):
else:
self.emit(prefix + '_FAST', name)
elif scope == SC_GLOBAL:
self.emit(prefix + '_GLOBAL', name)
if not self.optimized:
self.emit(prefix + '_NAME', name)
else:
self.emit(prefix + '_GLOBAL', name)
elif scope == SC_FREE or scope == SC_CELL:
self.emit(prefix + '_DEREF', name)
else:

14
Tools/compiler/compiler/pycodegen.py
View File

@ -355,11 +355,11 @@ class CodeGenerator:
self.set_lineno(node)
self.emit('SETUP_LOOP', after)
self.visit(node.list)
self.visit(ast.Const(0))
self.emit('GET_ITER')
self.nextBlock(start)
self.set_lineno(node, force=1)
self.emit('FOR_LOOP', anchor)
self.nextBlock()
self.emit('FOR_ITER', anchor)
self.visit(node.assign)
self.visit(node.body)
self.emit('JUMP_ABSOLUTE', start)
@ -567,7 +567,8 @@ class CodeGenerator:
self.nextBlock(next)
else:
self.nextBlock()
self.emit('POP_TOP')
if expr: # XXX
self.emit('POP_TOP')
self.emit('END_FINALLY')
if node.else_:
self.nextBlock(lElse)
@ -1001,7 +1002,10 @@ class NestedScopeCodeGenerator(CodeGenerator):
else:
self.emit(prefix + '_FAST', name)
elif scope == SC_GLOBAL:
self.emit(prefix + '_GLOBAL', name)
if not self.optimized:
self.emit(prefix + '_NAME', name)
else:
self.emit(prefix + '_GLOBAL', name)
elif scope == SC_FREE or scope == SC_CELL:
self.emit(prefix + '_DEREF', name)
else: