[pypy-svn] r12996 - pypy/branch/pycompiler/module/recparser/compiler

[ludal at codespeak.net]

Author: ludal
Date: Thu Jun  2 12:52:15 2005
New Revision: 12996

Added:
   pypy/branch/pycompiler/module/recparser/compiler/bytecode.py
Log:
 * objects for bytecode generation


Added: pypy/branch/pycompiler/module/recparser/compiler/bytecode.py
==============================================================================
--- (empty file)
+++ pypy/branch/pycompiler/module/recparser/compiler/bytecode.py	Thu Jun  2 12:52:15 2005
@@ -0,0 +1,50 @@
+
+
+
+class ByteCode(object):
+    def __init__(self, insn, node):
+        self.insn = insn
+        self.node = node
+        
+    def emit(self, ctx):
+        """Emit bytecode given context"""
+        ctx.set_lineno( node.lineno )
+        ctx.emit( insn )
+
+    def size(self):
+        return 1
+
+
+class LoadValue(ByteCode):
+    def __init__(self, name, node):
+        self.name = name
+        self.node = node
+
+    def emit(self, ctx):
+        ctx.set_lineno( node.lineno )
+        name_scope = ctx.get_name( self.name )
+        if name_scope == "global":
+            ctx.emit_arg('LOAD_GLOBAL', self.name )
+        elif name_scope == "local":
+            idx = ctx.get_local_idx( self.name )
+            ctx.emit_arg('LOAD_FAST', idx )
+
+class LoadConst(ByteCode):
+    def __init__(self, cst, node ):
+        self.cst = cst
+        self.node = node
+
+    def emit(self, ctx):
+        ctx.set_lineno( node.lineno )
+        ctx.emit_arg('LOAD_CONST', self.cst)
+
+    def size(self):
+        return 3
+
+class CondJump(object):
+    def __init__(self, cond, block ):
+        self.nextBlock = block
+        self.cond = cond # FWD, IF_TRUE, IF_FALSE, ABSOLUTE
+
+    def emit(self, ctx):
+        pass