fix: move src/xtools to python/xtools (#846)

* fix: move src/xtools to python/xtools

* fix Makefiles affected by xtools and pnodes being moved

4 files changed, 4 insertions, 933 deletions

diff --git a/src/edif/Makefile b/src/edif/Makefile
index 7d2fa6980..3a3cb4a8b 100644
--- a/src/edif/Makefile
+++ b/src/edif/Makefile
@@ -6,7 +6,7 @@ ortho_srcdir=../ortho
 GEN_SRCS=edif-nodes.adb edif-nodes_meta.ads edif-nodes_meta.adb
 CC=gcc
 
-PNODES=../xtools/pnodes.py
+PNODES=../../python/xtools/pnodes.py
 PNODES_ARGS=--field-file=edif-nodes.adb.in --kind-file=edif-nodes.ads --node-file=edif-nodes.ads --template-file=edif-nodes.adb.in --meta-basename=edif-nodes_meta --kind-type=Nkind --kind-range-prefix=Nkinds_ --kind-prefix=N_ --node-type=Node
 
 all: dump_edif
diff --git a/src/psl/Makefile b/src/psl/Makefile
index 472a82b01..fdcfccaf7 100644
--- a/src/psl/Makefile
+++ b/src/psl/Makefile
@@ -20,7 +20,7 @@
 # be committed and distribued with the sources, so that users don't need to
 # regenerate them (and don't need to have python installed).
 
-PNODES=../xtools/pnodes.py
+PNODES=../../python/xtools/pnodes.py
 
 DEPS=psl-nodes.ads psl-nodes.adb.in $(PNODES)
 
diff --git a/src/vhdl/Makefile b/src/vhdl/Makefile
index 425563a18..3f09c855f 100644
--- a/src/vhdl/Makefile
+++ b/src/vhdl/Makefile
@@ -20,8 +20,8 @@
 # be committed and distribued with the sources, so that users don't need to
 # regenerate them (and don't need to have python installed).
 
-PNODES=../xtools/pnodes.py
-PNODESPY=python/pnodespy.py
+PNODES=../../python/xtools/pnodes.py
+PNODESPY=../../python/pnodes/pnodespy.py
 
 DEPS=vhdl-nodes.ads vhdl-nodes.adb.in $(PNODES)
 
diff --git a/src/xtools/pnodes.py b/src/xtools/pnodes.py
deleted file mode 100755
index 62d5362d3..000000000
--- a/src/xtools/pnodes.py
+++ /dev/null
@@ -1,929 +0,0 @@
-#!/usr/bin/env python
-
-import re
-import sys
-import argparse
-
-field_file = "nodes.ads"
-kind_file = "iirs.ads"
-node_file = "iirs.ads"
-template_file = "iirs.adb.in"
-meta_base_file = "nodes_meta"
-prefix_name = "Iir_Kind_"
-prefix_range_name = "Iir_Kinds_"
-type_name = "Iir_Kind"
-node_type = "Iir"
-conversions = ['uc', 'pos', 'grp']
-
-
-class FuncDesc:
-    def __init__(self, name, fields, conv, acc,
-                 pname, ptype, rname, rtype):
-        self.name = name
-        self.fields = fields  # List of physical fields used
-        self.conv = conv
-        self.acc = acc  # access: Chain, Chain_Next, Ref, Of_Ref, Maybe_Ref,
-        #                 Forward_Ref, Maybe_Forward_Ref
-        self.pname = pname  # Parameter mame
-        self.ptype = ptype  # Parameter type
-        self.rname = rname  # value name (for procedure)
-        self.rtype = rtype  # value type
-
-
-class NodeDesc:
-    def __init__(self, name, format, fields, attrs):
-        self.name = name
-        self.format = format
-        self.fields = fields  # {field: FuncDesc} dict, defined for all fields
-        self.attrs = attrs    # A {attr: FuncDesc} dict
-        self.order = []       # List of fields name, in order of appearance.
-
-
-class line:
-    def __init__(self, string, no):
-        self.l = string
-        self.n = no
-
-
-class EndOfFile(Exception):
-    def __init__(self, filename):
-        self.filename = filename
-
-    def __str__(self):
-        return "end of file " + self.filename
-
-
-class linereader:
-    def __init__(self, filename):
-        self.filename = filename
-        self.f = open(filename)
-        self.lineno = 0
-        self.l = ''
-
-    def get(self):
-        self.l = self.f.readline()
-        if not self.l:
-            raise EndOfFile(self.filename)
-        self.lineno = self.lineno + 1
-        return self.l
-
-
-class ParseError(Exception):
-    def __init__(self, lr, msg):
-        self.lr = lr
-        self.msg = msg
-
-    def __str__(self):
-        return 'Error: ' + self.msg
-        return 'Parse error at ' + self.lr.filname + ':' + self.lr.lineno + \
-               ': ' + self.msg
-
-
-# Return fields description.
-# This is a dictionary.  The keys represent the possible format of a node.
-# The values are dictionnaries representing fields.  Keys are fields name, and
-# values are fields type.
-def read_fields(file):
-    fields = {}
-    formats = []
-    lr = linereader(file)
-
-    #  Search for 'type Format_Type is'
-    while lr.get() != '   type Format_Type is\n':
-        pass
-
-    # Skip '('
-    if lr.get() != '     (\n':
-        raise 'no open parenthesis after Format_Type'
-
-    # Read formats
-    l = lr.get()
-    pat_field_name = re.compile('      Format_(\w+),?\n')
-    while l != '     );\n':
-        m = pat_field_name.match(l)
-        if m is None:
-            print l
-            raise 'bad literal within Format_Type'
-        name = m.group(1)
-        formats.append(name)
-        fields[name] = {}
-        l = lr.get()
-
-    # Read fields
-    l = lr.get()
-    pat_fields = re.compile('   -- Fields of Format_(\w+):\n')
-    pat_field_desc = re.compile('   --   (\w+) : (\w+).*\n')
-    format_name = ''
-    common_desc = {}
-
-    # Read until common fields.
-    while l != '   -- Common fields are:\n':
-        l = lr.get()
-    format_name = 'Common'
-    nbr_formats = 0
-
-    while True:
-        # 1) Read field description
-        l = lr.get()
-        desc = common_desc.copy()
-        while True:
-            m = pat_field_desc.match(l)
-            if m is None:
-                break
-            desc[m.group(1)] = m.group(2)
-            l = lr.get()
-            # print 'For: ' + format_name + ': ' + m.group(1)
-
-        # 2) Disp
-        if format_name == 'Common':
-            common_desc = desc
-        else:
-            fields[format_name] = desc
-
-        # 3) Read next format
-        if l == '\n':
-            if nbr_formats == len(fields):
-                break
-            else:
-                l = lr.get()
-
-        # One for a format
-        m = pat_fields.match(l)
-        if m is not None:
-            format_name = m.group(1)
-            if format_name not in fields:
-                raise ParseError(
-                    lr, 'Format ' + format_name + ' is unknown')
-            nbr_formats = nbr_formats + 1
-        else:
-            raise ParseError(lr, 'unhandled format line')
-
-    return (formats, fields)
-
-
-# Read kinds and kinds ranges.
-def read_kinds(filename):
-    lr = linereader(filename)
-    kinds = []
-    #  Search for 'type Iir_Kind is'
-    while lr.get() != '   type ' + type_name + ' is\n':
-        pass
-    # Skip '('
-    if lr.get() != '     (\n':
-        raise ParseError(
-            lr, 'no open parenthesis after "type ' + type_name + '"')
-
-    # Read literals
-    pat_node = re.compile('      ' + prefix_name + '(\w+),?( +-- .*)?\n')
-    pat_comment = re.compile('( +-- .*)?\n')
-    while True:
-        l = lr.get()
-        if l == '     );\n':
-            break
-        m = pat_node.match(l)
-        if m:
-            kinds.append(m.group(1))
-            continue
-        m = pat_comment.match(l)
-        if not m:
-            raise ParseError(lr, 'Unknown line within kind declaration')
-
-    # Check subtypes
-    pat_subtype = re.compile('   subtype ' + r'(\w+) is '
-                              + type_name + ' range\n')
-    pat_first = re.compile('     ' + prefix_name + r'(\w+) ..\n')
-    pat_last = re.compile('     ' + prefix_name + r'(\w+);\n')
-    pat_middle = re.compile('   --' + prefix_name + r'(\w+)\n')
-    kinds_ranges = {}
-    while True:
-        l = lr.get()
-        # Start of methods is also end of subtypes.
-        if l == '   -- General methods.\n':
-            break
-        # Found a subtype.
-        m = pat_subtype.match(l)
-        if m:
-            # Check first bound
-            name = m.group(1)
-            if not name.startswith(prefix_range_name):
-                raise ParseError(lr, 'incorrect prefix for subtype')
-            name = name[len(prefix_range_name):]
-            l = lr.get()
-            mf = pat_first.match(l)
-            if not mf:
-                raise ParseError(lr, 'badly formated first bound of subtype')
-            first = kinds.index(mf.group(1))
-            idx = first
-            has_middle = None
-            # Read until last bound
-            while True:
-                l = lr.get()
-                ml = pat_middle.match(l)
-                if ml:
-                    # Check element in the middle
-                    n = ml.group(1)
-                    if n not in kinds:
-                        raise ParseError(
-                            lr, "unknown kind " + n + " in subtype")
-                    if kinds.index(n) != idx + 1:
-                        raise ParseError(
-                            lr, "missing " + kinds[idx + 1] + " in subtype")
-                    has_middle = True
-                    idx = idx + 1
-                else:
-                    # Check last bound
-                    ml = pat_last.match(l)
-                    if ml:
-                        last = kinds.index(ml.group(1))
-                        if last != idx + 1 and has_middle:
-                            raise ParseError(
-                                lr, "missing " + kinds[idx] + " in subtype")
-                        break
-                    raise ParseError(lr, "unhandled line in subtype")
-            kinds_ranges[name] = kinds[first:last+1]
-    return (kinds, kinds_ranges)
-
-# Read functions
-def read_methods(filename):
-    lr = linereader(filename)
-    funcs = []
-    pat_field = re.compile(r'   --  Field: ([\w,]+)( \w+)?( \(\w+\))?\n')
-    pat_conv = re.compile(r'^ \((\w+)\)$')
-    pat_func = re.compile(
-        r'   function Get_(\w+) \((\w+) : (\w+)\) return (\w+);\n')
-    pat_proc = re.compile(
-        r'   procedure Set_(\w+) \((\w+) : (\w+); (\w+) : (\w+)\);\n')
-    pat_end = re.compile('end [A-Za-z.]+;\n')
-    while True:
-        l = lr.get()
-        # Start of methods
-        if l == '   -- General methods.\n':
-            break
-    while True:
-        l = lr.get()
-        if pat_end.match(l):
-            break
-        m = pat_field.match(l)
-        if m:
-            fields = m.group(1).split(',')
-            # Extract access modifier
-            acc = m.group(2)
-            if acc:
-                acc = acc.strip()
-            # Extract conversion
-            conv = m.group(3)
-            if conv:
-                mc = pat_conv.match(conv)
-                if not mc:
-                    raise ParseError(lr, 'conversion ill formed')
-                conv = mc.group(1)
-                if conv not in conversions:
-                    raise ParseError(lr, 'unknown conversion ' + conv)
-            else:
-                conv = None
-            if len(fields) > 1 and conv != 'grp':
-                raise ParseError(lr, 'bad conversion for multiple fields')
-            # Read function
-            l = lr.get()
-            mf = pat_func.match(l)
-            if not mf:
-                raise ParseError(
-                    lr, 'function declaration expected after Field')
-            # Read procedure
-            l = lr.get()
-            mp = pat_proc.match(l)
-            if not mp:
-                raise ParseError(
-                    lr, 'procedure declaration expected after function')
-            # Consistency check between function and procedure
-            if mf.group(1) != mp.group(1):
-                raise ParseError(lr, 'function and procedure name mismatch')
-            if mf.group(2) != mp.group(2):
-                raise ParseError(lr, 'parameter name mismatch with function')
-            if mf.group(3) != mp.group(3):
-                raise ParseError(lr, 'parameter type mismatch with function')
-            if mf.group(4) != mp.group(5):
-                raise ParseError(lr, 'result type mismatch with function')
-            funcs.append(FuncDesc(mf.group(1), fields, conv, acc,
-                                  mp.group(2), mp.group(3),
-                                  mp.group(4), mp.group(5)))
-
-    return funcs
-
-
-# Read description for one node
-# LR is the line reader.  NAMES is the list of (node name, format)
-#  (one description may describe several nodes).
-def read_nodes_fields(lr, names, fields, nodes, funcs_dict):
-    pat_only = re.compile('   -- Only for ' + prefix_name + '(\w+):\n')
-    pat_only_bad = re.compile ('   -- *Only for.*\n')
-    pat_field = re.compile('   --   Get/Set_(\w+) \((Alias )?([\w,]+)\)\n')
-    pat_comment = re.compile('   --.*\n')
-    pat_start = re.compile('   --   \w.*\n')
-
-    # Create nodes
-    cur_nodes = []
-    for (nm, fmt) in names:
-        if fmt not in fields:
-            raise ParseError(lr, 'unknown format "{}"'.format(fmt))
-        n = NodeDesc(nm, fmt, {x: None for x in fields[fmt]}, {})
-        nodes[nm] = n
-        cur_nodes.append(n)
-
-    # Look for fields
-    only_nodes = cur_nodes
-    l = lr.l
-    while l != '\n':
-        # Handle 'Only ...'
-        while True:
-            m = pat_only.match(l)
-            if not m:
-                break
-            name = m.group(1)
-            if name not in [x.name for x in cur_nodes]:
-                raise ParseError(lr, 'node not currently described')
-            if only_nodes == cur_nodes:
-                only_nodes = []
-            only_nodes.append(nodes[name])
-            l = lr.get()
-        # Handle field: '--  Get/Set_FUNC (Alias? FIELD)'
-        m = pat_field.match(l)
-        if m:
-            # 1) Check the function exists
-            func = m.group(1)
-            alias = m.group(2)
-            fields = m.group(3).split(',')
-            if func not in funcs_dict:
-                raise ParseError(lr, 'unknown function')
-            func = funcs_dict[func]
-            if func.fields != fields:
-                raise ParseError(lr, 'fields mismatch')
-            for c in only_nodes:
-                for f in fields:
-                    if f not in c.fields:
-                        raise ParseError(
-                            lr, 'field ' + f + ' does not exist in node')
-                if not alias:
-                    for f in fields:
-                        if c.fields[f]:
-                            raise ParseError(
-                                lr, 'field ' + f + ' already used')
-                        c.fields[f] = func
-                        c.order.append(f)
-                c.attrs[func.name] = func
-            only_nodes = cur_nodes
-        elif pat_start.match(l):
-            raise ParseError(lr, 'bad line in node description')
-        elif pat_only_bad.match(l):
-            raise ParseError(lr, "misleading 'Only for' comment")
-        elif not pat_comment.match(l):
-            raise ParseError(lr, 'bad line in node description')
-        l = lr.get()
-
-
-def read_nodes(filename, kinds, kinds_ranges, fields, funcs):
-    """Read description for all nodes."""
-    lr = linereader(filename)
-    funcs_dict = {x.name: x for x in funcs}
-    nodes = {}
-
-    # Skip until start
-    while lr.get() != '   -- Start of ' + type_name + '.\n':
-        pass
-
-    pat_decl = re.compile('   -- ' + prefix_name + '(\w+) \((\w+)\)\n')
-    pat_decls = re.compile('   -- ' + prefix_range_name + '(\w+) \((\w+)\)\n')
-    pat_comment_line = re.compile('   --+\n')
-    pat_comment_box = re.compile('   --(  .*)?\n')
-    while True:
-        l = lr.get()
-        if l == '   -- End of ' + type_name + '.\n':
-            break
-        if l == '\n':
-            continue
-        m = pat_decl.match(l)
-        if m:
-            # List of nodes being described by the current description.
-            names = []
-
-            # Declaration of the first node
-            while True:
-                name = m.group(1)
-                if name not in kinds:
-                    raise ParseError(lr, 'unknown node')
-                fmt = m.group(2)
-                names.append((name, fmt))
-                if name in nodes:
-                    raise ParseError(
-                        lr, 'node {} already described'.format(name));
-                # There might be several nodes described at once.
-                l = lr.get()
-                m = pat_decl.match(l)
-                if not m:
-                    break
-            read_nodes_fields(lr, names, fields, nodes, funcs_dict)
-            continue
-        m = pat_decls.match(l)
-        if m:
-            # List of nodes being described by the current description.
-            name = m.group(1)
-            fmt = m.group(2)
-            names = [(k, fmt) for k in kinds_ranges[name]]
-            l = lr.get()
-            read_nodes_fields(lr, names, fields, nodes, funcs_dict)
-            continue
-        if pat_comment_line.match(l) or pat_comment_box.match(l):
-            continue
-        raise ParseError(lr, 'bad line in node description')
-
-    for k in kinds:
-        if k not in nodes:
-            raise ParseError(lr, 'no desription for "{}"'.format(k))
-    return nodes
-
-
-def gen_choices(choices):
-    """Generate a choice 'when A | B ... Z =>' using elements of CHOICES."""
-    is_first = True
-    for c in choices:
-        if is_first:
-            print '        ',
-            print 'when',
-        else:
-            print
-            print '        ',
-            print '  |',
-        print prefix_name + c,
-        is_first = False
-    print '=>'
-
-
-def gen_get_format(formats, nodes, kinds):
-    """Generate the Get_Format function."""
-    print '   function Get_Format (Kind : ' + type_name + ') ' + \
-          'return Format_Type is'
-    print '   begin'
-    print '      case Kind is'
-    for f in formats:
-        choices = [k for k in kinds if nodes[k].format == f]
-        gen_choices(choices)
-        print '            return Format_' + f + ';'
-    print '      end case;'
-    print '   end Get_Format;'
-
-
-def gen_subprg_header(decl):
-    if len(decl) < 76:
-        print decl + ' is'
-    else:
-        print decl
-        print '   is'
-    print '   begin'
-
-
-def gen_assert(func):
-    print '      pragma Assert (' + func.pname + ' /= Null_' + node_type + ');'
-    cond = '(Has_' + func.name + ' (Get_Kind (' + func.pname + ')),'
-    msg = '"no field ' + func.name + '");'
-    if len(cond) < 60:
-        print '      pragma Assert ' + cond
-        print '                     ' + msg
-    else:
-        print '      pragma Assert'
-        print '         ' + cond
-        print '          ' + msg
-
-
-def get_field_type(fields, f):
-    for fld in fields.values():
-        if f in fld:
-            return fld[f]
-    return None
-
-
-def gen_get_set(func, nodes, fields):
-    """Generate Get_XXX/Set_XXX subprograms for FUNC."""
-    rtype = func.rtype
-    # If the function needs several fields, it must be user defined
-    if func.conv == 'grp':
-        print '   type %s_Conv is record' % rtype
-        for f in func.fields:
-            print '      %s: %s;' % (f, get_field_type(fields, f))
-        print '   end record;'
-        print '   pragma Pack (%s_Conv);' % rtype
-        print "   pragma Assert (%s_Conv'Size = %s'Size);" % (rtype, rtype)
-        print
-    else:
-        f = func.fields[0]
-        g = 'Get_' + f + ' (' + func.pname + ')'
-
-    s = func.rname
-    if func.conv:
-        if func.conv == 'uc':
-            field_type = get_field_type(fields, f)
-            g = field_type + '_To_' + rtype + ' (' + g + ')'
-            s = rtype + '_To_' + field_type + ' (' + s + ')'
-        elif func.conv == 'pos':
-            g = rtype + "'Val (" + g + ')'
-            s = rtype + "'Pos (" + s + ')'
-
-    subprg = '   function Get_' + func.name + ' (' + func.pname \
-             + ' : ' + func.ptype + ') return ' + rtype
-    if func.conv == 'grp':
-        print subprg
-        print '   is'
-        print '      function To_%s is new Ada.Unchecked_Conversion' % \
-            func.rtype
-        print '         (%s_Conv, %s);' % (rtype, rtype)
-        print '      Conv : %s_Conv;' % rtype
-        print '   begin'
-    else:
-        gen_subprg_header(subprg)
-    gen_assert(func)
-    if func.conv == 'grp':
-        for f in func.fields:
-            print '      Conv.%s := Get_%s (%s);' % (f, f, func.pname)
-        g = 'To_%s (Conv)' % rtype
-    print '      return ' + g + ';'
-    print '   end Get_' + func.name + ';'
-    print
-
-    subprg = '   procedure Set_' + func.name + ' (' \
-             + func.pname + ' : ' + func.ptype + '; ' \
-             + func.rname + ' : ' + func.rtype + ')'
-    if func.conv == 'grp':
-        print subprg
-        print '   is'
-        print '      function To_%s_Conv is new Ada.Unchecked_Conversion' % \
-            func.rtype
-        print '         (%s, %s_Conv);' % (rtype, rtype)
-        print '      Conv : %s_Conv;' % rtype
-        print '   begin'
-    else:
-        gen_subprg_header(subprg)
-    gen_assert(func)
-    if func.conv == 'grp':
-        print '      Conv := To_%s_Conv (%s);' % (rtype, func.rname)
-        for f in func.fields:
-            print '      Set_%s (%s, Conv.%s);' % (f, func.pname, f)
-    else:
-        print '      Set_' + f + ' (' + func.pname + ', ' + s + ');'
-    print '   end Set_' + func.name + ';'
-    print
-
-
-def funcs_of_node(n):
-    return sorted([fv.name for fv in n.fields.values() if fv])
-
-
-def gen_has_func_spec(name, suff):
-    spec = '   function Has_' + name + ' (K : ' + type_name + ')'
-    ret = ' return Boolean' + suff
-    if len(spec) < 60:
-        print spec + ret
-    else:
-        print spec
-        print '     ' + ret
-
-
-def do_disp_formats():
-    for fmt in fields:
-        print "Fields of Format_"+fmt
-        fld = fields[fmt]
-        for k in fld:
-            print '  ' + k + ' (' + fld[k] + ')'
-
-
-def do_disp_kinds():
-    print "Kinds are:"
-    for k in kinds:
-        print '  ' + prefix_name + k
-
-
-def do_disp_funcs():
-    print "Functions are:"
-    for f in funcs:
-        s = '{0} ({1}: {2}'.format(f.name, f.field, f.rtype)
-        if f.acc:
-            s += ' acc:' + f.acc
-        if f.conv:
-            s += ' conv:' + f.conv
-        s += ')'
-        print s
-
-
-def do_disp_types():
-    print "Types are:"
-    s = set([])
-    for f in funcs:
-        s |= set([f.rtype])
-    for t in sorted(s):
-        print '  ' + t
-
-
-def do_disp_nodes():
-    for k in kinds:
-        v = nodes[k]
-        print prefix_name + k + ' (' + v.format + ')'
-        flds = [fk for fk, fv in v.fields.items() if fv]
-        for fk in sorted(flds):
-            print '  ' + fk + ': ' + v.fields[fk].name
-
-
-def do_get_format():
-    gen_get_format(formats, nodes)
-
-
-def do_body():
-    lr = linereader(template_file)
-    while True:
-        l = lr.get().rstrip()
-        print l
-        if l == '   --  Subprograms':
-            gen_get_format(formats, nodes, kinds)
-            print
-            for f in funcs:
-                gen_get_set(f, nodes, fields)
-        if l[0:3] == 'end':
-            break
-
-
-def get_types():
-    s = set([])
-    for f in funcs:
-        s |= set([f.rtype])
-    return [t for t in sorted(s)]
-
-
-def get_attributes():
-    s = set([])
-    for f in funcs:
-        if f.acc:
-            s |= set([f.acc])
-    res = [t for t in sorted(s)]
-    res.insert(0, 'None')
-    return res
-
-
-def gen_enum(prefix, vals):
-    last = None
-    for v in vals:
-        if last:
-            print last + ','
-        last = prefix + v
-    print last
-
-
-def do_meta_specs():
-    lr = linereader(meta_base_file + '.ads.in')
-    types = get_types()
-    while True:
-        l = lr.get().rstrip()
-        if l == '      --  TYPES':
-            gen_enum('      Type_', types)
-        elif l == '      --  FIELDS':
-            gen_enum('      Field_', [f.name for f in funcs])
-        elif l == '      --  ATTRS':
-            gen_enum('      Attr_', get_attributes())
-        elif l == '   --  FUNCS':
-            for t in types:
-                print '   function Get_' + t
-                print '      (N : ' + node_type + '; F : Fields_Enum) return '\
-                      + t + ';'
-                print '   procedure Set_' + t
-                print '      (N : ' + node_type + '; F : Fields_Enum; V: ' \
-                      + t + ');'
-                print
-            for f in funcs:
-                gen_has_func_spec(f.name, ';')
-        elif l[0:3] == 'end':
-            print l
-            break
-        else:
-            print l
-
-
-def do_meta_body():
-    lr = linereader(meta_base_file + '.adb.in')
-    while True:
-        l = lr.get().rstrip()
-        if l == '      --  FIELDS_TYPE':
-            last = None
-            for f in funcs:
-                if last:
-                    print last + ','
-                last = '      Field_' + f.name + ' => Type_' + f.rtype
-            print last
-        elif l == '         --  FIELD_IMAGE':
-            for f in funcs:
-                print '         when Field_' + f.name + ' =>'
-                print '            return "' + f.name.lower() + '";'
-        elif l == '         --  IIR_IMAGE':
-            for k in kinds:
-                print '         when ' + prefix_name + k + ' =>'
-                print '            return "' + k.lower() + '";'
-        elif l == '         --  FIELD_ATTRIBUTE':
-            for f in funcs:
-                print '         when Field_' + f.name + ' =>'
-                if f.acc:
-                    attr = f.acc
-                else:
-                    attr = 'None'
-                print '            return Attr_' + attr + ';'
-        elif l == '      --  FIELDS_ARRAY':
-            last = None
-            nodes_types = [node_type,
-                           node_type + '_List', node_type + '_Flist']
-            for k in kinds:
-                v = nodes[k]
-                if last:
-                    print last + ','
-                last = None
-                print '      --  ' + prefix_name + k
-                # Get list of physical fields for V, in some order.
-                if flag_keep_order:
-                    flds = v.order
-                else:
-                    # First non Iir and no Iir_List.
-                    flds = sorted([fk for fk, fv in v.fields.items()
-                                   if fv and fv.rtype not in nodes_types])
-                    # Then Iir and Iir_List in order of appearance
-                    flds += (fv for fv in v.order
-                             if v.fields[fv].rtype in nodes_types)
-                # Print the corresponding node field, but remove duplicate due
-                # to 'grp'.
-                fldsn = []
-                for fk in flds:
-                    if last:
-                        print last + ','
-                    # Remove duplicate
-                    fn = v.fields[fk].name
-                    if fn not in fldsn:
-                        last = '      Field_' + fn
-                        fldsn.append(fn)
-                    else:
-                        last = None
-            if last:
-                print last
-        elif l == '      --  FIELDS_ARRAY_POS':
-            pos = -1
-            last = None
-            for k in kinds:
-                v = nodes[k]
-                # Create a set to remove duplicate for 'grp'.
-                flds = set([fv.name for fk, fv in v.fields.items() if fv])
-                pos += len(flds)
-                if last:
-                    print last + ','
-                last = '      ' + prefix_name + k + ' => {}'.format(pos)
-            print last
-        elif l == '   --  FUNCS_BODY':
-            # Build list of types
-            s = set([])
-            for f in funcs:
-                s |= set([f.rtype])
-            types = [t for t in sorted(s)]
-            for t in types:
-                print '   function Get_' + t
-                print '      (N : ' + node_type + '; F : Fields_Enum) return '\
-                      + t + ' is'
-                print '   begin'
-                print '      pragma Assert (Fields_Type (F) = Type_' + t + ');'
-                print '      case F is'
-                for f in funcs:
-                    if f.rtype == t:
-                        print '         when Field_' + f.name + ' =>'
-                        print '            return Get_' + f.name + ' (N);'
-                print '         when others =>'
-                print '            raise Internal_Error;'
-                print '      end case;'
-                print '   end Get_' + t + ';'
-                print
-                print '   procedure Set_' + t
-                print '      (N : ' + node_type + '; F : Fields_Enum; V: ' \
-                      + t + ') is'
-                print '   begin'
-                print '      pragma Assert (Fields_Type (F) = Type_' + t + ');'
-                print '      case F is'
-                for f in funcs:
-                    if f.rtype == t:
-                        print '         when Field_' + f.name + ' =>'
-                        print '            Set_' + f.name + ' (N, V);'
-                print '         when others =>'
-                print '            raise Internal_Error;'
-                print '      end case;'
-                print '   end Set_' + t + ';'
-                print
-            for f in funcs:
-                gen_has_func_spec(f.name, ' is')
-                choices = [k for k in kinds if f.name in nodes[k].attrs]
-                if len(choices) == 0:
-                    print '      pragma Unreferenced (K);'
-                print '   begin'
-                if len(choices) == 0:
-                    print '      return False;'
-                elif len(choices) == 1:
-                    print '      return K = ' + prefix_name + choices[0] + ';'
-                else:
-                    print '      case K is'
-                    gen_choices(choices)
-                    print '            return True;'
-                    print '         when others =>'
-                    print '            return False;'
-                    print '      end case;'
-                print '   end Has_' + f.name + ';'
-                print
-        elif l[0:3] == 'end':
-            print l
-            break
-        else:
-            print l
-
-
-actions = {'disp-nodes': do_disp_nodes,
-           'disp-kinds': do_disp_kinds,
-           'disp-formats': do_disp_formats,
-           'disp-funcs': do_disp_funcs,
-           'disp-types': do_disp_types,
-           'get_format': do_get_format,
-           'body': do_body,
-           'meta_specs': do_meta_specs,
-           'meta_body': do_meta_body}
-
-
-def main():
-    parser = argparse.ArgumentParser(description='Meta-grammar processor')
-    parser.add_argument('action', choices=actions.keys(),
-                        default='disp-nodes')
-    parser.add_argument('--field-file', dest='field_file',
-                        default='nodes.ads',
-                        help='specify file which defines fields')
-    parser.add_argument('--kind-file', dest='kind_file',
-                        default='iirs.ads',
-                        help='specify file which defines nodes kind')
-    parser.add_argument('--node-file', dest='node_file',
-                        default='iirs.ads',
-                        help='specify file which defines nodes and methods')
-    parser.add_argument('--template-file', dest='template_file',
-                        default='iirs.adb.in',
-                        help='specify template body file')
-    parser.add_argument('--meta-basename', dest='meta_basename',
-                        default='nodes_meta',
-                        help='specify base name of meta files')
-    parser.add_argument('--kind-type', dest='kind_type',
-                        default='Iir_Kind',
-                        help='name of kind type')
-    parser.add_argument('--kind-prefix', dest='kind_prefix',
-                        default='Iir_Kind_',
-                        help='prefix for kind literals')
-    parser.add_argument('--kind-range-prefix', dest='kind_range_prefix',
-                        default='Iir_Kinds_',
-                        help='prefix for kind subtype (range)')
-    parser.add_argument('--node-type', dest='node_type',
-                        default='Iir',
-                        help='name of the node type')
-    parser.add_argument('--keep-order', dest='flag_keep_order',
-                        action='store_true',
-                        help='keep field order of nodes')
-    parser.set_defaults(flag_keep_order=False)
-    args = parser.parse_args()
-
-    # At some point, it would be simpler to create a class...
-    global formats, fields, nodes, kinds, kinds_ranges, funcs
-
-    global type_name, prefix_name, template_file, node_type, meta_base_file
-    global prefix_range_name, flag_keep_order, kind_file
-
-    type_name = args.kind_type
-    prefix_name = args.kind_prefix
-    prefix_range_name = args.kind_range_prefix
-    template_file = args.template_file
-    node_type = args.node_type
-    meta_base_file = args.meta_basename
-    flag_keep_order = args.flag_keep_order
-
-    field_file = args.field_file
-    kind_file = args.kind_file
-    node_file = args.node_file
-
-    try:
-        (formats, fields) = read_fields(field_file)
-        (kinds, kinds_ranges) = read_kinds(kind_file)
-        funcs = read_methods(node_file)
-        nodes = read_nodes(node_file, kinds, kinds_ranges, fields, funcs)
-
-    except ParseError as e:
-        print >> sys.stderr, e
-        print >> sys.stderr, \
-            "in {0}:{1}:{2}".format(e.lr.filename, e.lr.lineno, e.lr.l)
-        sys.exit(1)
-
-    f = actions.get(args.action, None)
-    if not f:
-        print >> sys.stderr, "Action {0} is unknown".format(args.action)
-        sys.exit(1)
-    f()
-
-
-if __name__ == '__main__':
-    main()