6 files changed, 23 insertions, 48 deletions
diff --git a/miasm2/arch/aarch64/arch.py b/miasm2/arch/aarch64/arch.py
index c875d787..460c134e 100644
--- a/miasm2/arch/aarch64/arch.py
+++ b/miasm2/arch/aarch64/arch.py
@@ -74,34 +74,29 @@ _, _, base_expr64 = gen_base_expr()
 
 
 def ast_id2expr32(t):
-    if not t in mn_aarch64.regs.all_regs_ids_byname:
-        r = m2_expr.ExprId(asm_label(t))
-    else:
-        r = mn_aarch64.regs.all_regs_ids_byname[t]
-    if not r.size == 32:
-        raise StopIteration
-    return r
-
+    if t in mn_aarch64.regs.all_regs_ids_byname:
+        t = mn_aarch64.regs.all_regs_ids_byname[t]
+        if not t.size == 32:
+            raise StopIteration
+    return t
 
 def ast_int2expr32(a):
     return m2_expr.ExprInt32(a)
 
 
 def ast_id2expr64(t):
-    if not t in mn_aarch64.regs.all_regs_ids_byname:
-        r = m2_expr.ExprId(asm_label(t))
-    else:
-        r = mn_aarch64.regs.all_regs_ids_byname[t]
-    if not r.size == 64:
-        raise StopIteration
-    return r
+    if t in mn_aarch64.regs.all_regs_ids_byname:
+        t = mn_aarch64.regs.all_regs_ids_byname[t]
+        if not t.size == 64:
+            raise StopIteration
+    return t
 
 
 def ast_int2expr64(a):
     return m2_expr.ExprInt64(a)
 
-my_var_parser32 = parse_ast(ast_id2expr32, ast_int2expr32)
-my_var_parser64 = parse_ast(ast_id2expr64, ast_int2expr64)
+my_var_parser32 = ParseAst(ast_id2expr32, ast_int2expr32, default_size=32)
+my_var_parser64 = ParseAst(ast_id2expr64, ast_int2expr64, default_size=64)
 
 base_expr32.setParseAction(my_var_parser32)
 base_expr64.setParseAction(my_var_parser64)
@@ -234,7 +229,7 @@ simds_info = {8: simd08_info,
               128: simd128_info}
 
 
-my_var_parser = parse_ast(ast_id2expr, ast_int2expr)
+my_var_parser = ParseAst(ast_id2expr, ast_int2expr)
 base_expr.setParseAction(my_var_parser)
 
 
diff --git a/miasm2/arch/arm/arch.py b/miasm2/arch/arm/arch.py
index 0e58008d..d9bf42ba 100644
--- a/miasm2/arch/arm/arch.py
+++ b/miasm2/arch/arm/arch.py
@@ -181,18 +181,14 @@ int_or_expr = base_expr
 
 
 def ast_id2expr(t):
-    if not t in mn_arm.regs.all_regs_ids_byname:
-        r = ExprId(asm_label(t))
-    else:
-        r = mn_arm.regs.all_regs_ids_byname[t]
-    return r
+    return mn_arm.regs.all_regs_ids_byname.get(t, t)
 
 
 def ast_int2expr(a):
     return ExprInt32(a)
 
 
-my_var_parser = parse_ast(ast_id2expr, ast_int2expr)
+my_var_parser = ParseAst(ast_id2expr, ast_int2expr)
 base_expr.setParseAction(my_var_parser)
 
 
diff --git a/miasm2/arch/mips32/arch.py b/miasm2/arch/mips32/arch.py
index 2ac16770..79176205 100644
--- a/miasm2/arch/mips32/arch.py
+++ b/miasm2/arch/mips32/arch.py
@@ -53,18 +53,14 @@ int_or_expr = base_expr
 
 
 def ast_id2expr(t):
-    if not t in mn_mips32.regs.all_regs_ids_byname:
-        r = ExprId(asm_label(t))
-    else:
-        r = mn_mips32.regs.all_regs_ids_byname[t]
-    return r
+    return mn_mips32.regs.all_regs_ids_byname.get(t, t)
 
 
 def ast_int2expr(a):
     return ExprInt32(a)
 
 
-my_var_parser = cpu.parse_ast(ast_id2expr, ast_int2expr)
+my_var_parser = cpu.ParseAst(ast_id2expr, ast_int2expr)
 base_expr.setParseAction(my_var_parser)
 
 class additional_info:
diff --git a/miasm2/arch/msp430/arch.py b/miasm2/arch/msp430/arch.py
index a9f695ec..d7463f3d 100644
--- a/miasm2/arch/msp430/arch.py
+++ b/miasm2/arch/msp430/arch.py
@@ -72,11 +72,7 @@ PINC = Suppress("+")
 
 
 def ast_id2expr(t):
-    if not t in mn_msp430.regs.all_regs_ids_byname:
-        r = ExprId(asm_label(t), 16)
-    else:
-        r = mn_msp430.regs.all_regs_ids_byname[t]
-    return r
+    return mn_msp430.regs.all_regs_ids_byname.get(t, t)
 
 
 def ast_int2expr(a):
@@ -85,7 +81,7 @@ def ast_int2expr(a):
 
 variable, operand, base_expr = gen_base_expr()
 
-my_var_parser = parse_ast(ast_id2expr, ast_int2expr)
+my_var_parser = ParseAst(ast_id2expr, ast_int2expr)
 base_expr.setParseAction(my_var_parser)
 
 
diff --git a/miasm2/arch/sh4/arch.py b/miasm2/arch/sh4/arch.py
index d72e6945..ae96fef1 100644
--- a/miasm2/arch/sh4/arch.py
+++ b/miasm2/arch/sh4/arch.py
@@ -36,17 +36,13 @@ def parse_pcandimmimm(t):
     return (t[0] & t[1]) + t[2]
 
 def ast_id2expr(t):
-    if not t in mn_sh4.regs.all_regs_ids_byname:
-        r = ExprId(asm_label(t))
-    else:
-        r = mn_sh4.regs.all_regs_ids_byname[t]
-    return r
+    return mn_sh4.regs.all_regs_ids_byname.get(t, t)
 
 def ast_int2expr(a):
     return ExprInt32(a)
 
 
-my_var_parser = parse_ast(ast_id2expr, ast_int2expr)
+my_var_parser = ParseAst(ast_id2expr, ast_int2expr)
 base_expr.setParseAction(my_var_parser)
 
 int_or_expr = base_expr
diff --git a/miasm2/arch/x86/arch.py b/miasm2/arch/x86/arch.py
index 20fdc1cf..8ae6cd31 100644
--- a/miasm2/arch/x86/arch.py
+++ b/miasm2/arch/x86/arch.py
@@ -223,18 +223,14 @@ variable, operand, base_expr = gen_base_expr()
 
 
 def ast_id2expr(t):
-    if not t in mn_x86.regs.all_regs_ids_byname:
-        r = ExprId(asm_label(t))
-    else:
-        r = mn_x86.regs.all_regs_ids_byname[t]
-    return r
+    return mn_x86.regs.all_regs_ids_byname.get(t, t)
 
 
 def ast_int2expr(a):
     return ExprInt64(a)
 
 
-my_var_parser = parse_ast(ast_id2expr, ast_int2expr)
+my_var_parser = ParseAst(ast_id2expr, ast_int2expr)
 base_expr.setParseAction(my_var_parser)
 
 int_or_expr = base_expr