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asdl_cpp.py
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asdl_cpp.py
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"""
Generate C++ AST node definitions from an ASDL description.
"""
import sys
import os
import asdl
class ASDLVisitor(asdl.VisitorBase):
def __init__(self, stream, data):
super(ASDLVisitor, self).__init__()
self.stream = stream
self.data = data
def visitModule(self, mod, *args):
for df in mod.dfns:
self.visit(df, *args)
def visitSum(self, sum, *args):
for tp in sum.types:
self.visit(tp, *args)
def visitType(self, tp, *args):
self.visit(tp.value, *args)
def visitProduct(self, prod, *args):
for field in prod.fields:
self.visit(field, *args)
def visitConstructor(self, cons, *args):
for field in cons.fields:
self.visit(field, *args)
def visitField(self, field, *args):
pass
def emit(self, line, level=0):
indent = " "*level
self.stream.write(indent + line + "\n")
def is_simple_sum(sum):
"""
Returns true if `sum` is a simple sum.
Example of a simple sum:
boolop = And | Or
Example of not a simple sum:
type
= Integer(int kind)
| Real(int kind)
"""
assert isinstance(sum, asdl.Sum)
for constructor in sum.types:
if constructor.fields:
return False
return True
def attr_to_args(attrs):
args = []
for attr in attrs:
kw = ""
if attr.type == "int":
if attr.name in ["lineno", "col_offset"]:
kw = "=1"
else:
kw = "=0"
elif attr.type in ["string", "identifier"]:
kw = '=None'
elif attr.seq:
kw = "=[]"
else:
kw = "=None"
args.append(attr.name + kw)
return ", ".join(args)
simple_sums = []
sums = []
products = []
subs = {}
def convert_type(asdl_type, seq, opt, mod_name):
if asdl_type in simple_sums:
type_ = asdl_type + "Type"
assert not seq
elif asdl_type == "string":
type_ = "char*"
assert not seq
elif asdl_type == "identifier":
type_ = "char*"
if seq:
# List of strings is **
type_ = type_ + "*"
elif asdl_type == "bool":
type_ = "bool"
assert not seq
elif asdl_type == "float":
type_ = "double"
assert not seq
elif asdl_type == "node":
type_ = "%s_t*" % mod_name
if seq:
type_ = type_ + "*"
elif asdl_type == "symbol_table":
type_ = "SymbolTable*"
elif asdl_type == "int":
type_ = "int64_t"
assert not seq
else:
type_ = asdl_type + "_t"
if asdl_type in products:
# Product type
# Not a pointer by default
if seq or opt:
# Sequence or an optional argument must be a pointer
type_ = type_ + "*"
else:
# Sum type
# Sum type is polymorphic, must be a pointer
type_ = type_ + "*"
if seq:
# Sequence of polymorphic types must be a double pointer
type_ = type_ + "*"
return type_
class CollectVisitor(ASDLVisitor):
def visitType(self, tp):
self.visit(tp.value, tp.name)
def visitSum(self, sum, base):
if not is_simple_sum(sum):
sums.append(base);
class ASTNodeVisitor0(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Forward declarations")
self.emit("")
super(ASTNodeVisitor0, self).visitModule(mod)
def visitType(self, tp):
self.visit(tp.value, tp.name)
def visitSum(self, sum, base):
if is_simple_sum(sum):
simple_sums.append(base)
self.emit("enum %sType // Simple Sum" % base)
self.emit("{ // Types");
s = [cons.name for cons in sum.types]
self.emit( ", ".join(s), 1)
self.emit("};");
else:
self.emit("struct %s_t; // Sum" % base)
def visitProduct(self, product, name):
products.append(name)
self.emit("struct %s_t; // Product" % name)
class ASTNodeVisitor1(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Products declarations")
self.emit("")
self.mod = mod
super(ASTNodeVisitor1, self).visitModule(mod)
def visitType(self, tp):
self.visit(tp.value, tp.name)
def visitProduct(self, product, name):
self.emit("struct %s_t // Product" % name)
self.emit("{");
self.emit( "Location loc;", 1);
for f in product.fields:
type_ = convert_type(f.type, f.seq, f.opt, self.mod.name.lower())
if f.seq:
seq = " size_t n_%s; // Sequence" % f.name
else:
seq = ""
self.emit("%s m_%s;%s" % (type_, f.name, seq), 1)
self.emit("};");
class ASTNodeVisitor(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Sums declarations")
self.emit("")
self.mod = mod
super(ASTNodeVisitor, self).visitModule(mod)
def visitType(self, tp):
self.visit(tp.value, tp.name)
def visitSum(self, sum, base):
if not is_simple_sum(sum):
self.emit("enum %sType // Types" % base)
self.emit("{");
s = [cons.name for cons in sum.types]
self.emit( ", ".join(s), 1)
self.emit("};");
self.emit("")
self.emit("struct %s_t // Sum" % base)
self.emit("{")
mod = subs["mod"]
self.emit( "const static %sType class_type = %sType::%s;" \
% (mod, mod, base), 1)
self.emit( "%(mod)s_t base;" % subs, 1)
self.emit( "%sType type;" % base, 1)
self.emit("};")
self.emit("")
for cons in sum.types:
self.visit(cons, base, sum.attributes)
self.emit("")
self.emit("")
def visitConstructor(self, cons, base, extra_attributes):
self.emit("struct %s_t // Constructor" % cons.name, 1)
self.emit("{", 1);
self.emit( "const static %sType class_type = %sType::%s;" \
% (base, base, cons.name), 2)
self.emit( "typedef %s_t parent_type;" % base, 2)
self.emit( "%s_t base;" % base, 2);
args = ["Allocator &al", "const Location &a_loc"]
lines = []
for f in cons.fields:
type_ = convert_type(f.type, f.seq, f.opt, self.mod.name.lower())
if f.seq:
seq = " size_t n_%s; // Sequence" % f.name
else:
seq = ""
self.emit("%s m_%s;%s" % (type_, f.name, seq), 2)
args.append("%s a_%s" % (type_, f.name))
lines.append("n->m_%s = a_%s;" % (f.name, f.name))
if f.name in ["global_scope", "symtab"]:
lines.append("a_%s->asr_owner = (asr_t*)n;" % (f.name))
if f.seq:
args.append("size_t n_%s" % (f.name))
lines.append("n->n_%s = n_%s;" % (f.name, f.name))
self.emit("};", 1)
self.emit("static inline %s_t* make_%s_t(%s) {" % (subs["mod"],
cons.name, ", ".join(args)), 1)
self.emit( "%s_t *n;" % cons.name, 2)
self.emit( "n = al.make_new<%s_t>();" % cons.name, 2)
self.emit( "n->base.type = %sType::%s;" % (base, cons.name), 2)
self.emit( "n->base.base.type = %sType::%s;" % (subs["mod"],
base), 2)
self.emit( "n->base.base.loc = a_loc;", 2)
for line in lines:
self.emit(line, 2)
self.emit( "return (%(mod)s_t*)n;" % subs, 2)
self.emit("}", 1)
self.emit("")
class ASTVisitorVisitor1(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Visitor functions")
self.emit("")
super(ASTVisitorVisitor1, self).visitModule(mod)
def visitType(self, tp):
self.visit(tp.value, tp.name)
def visitSum(self, sum, base):
if not is_simple_sum(sum):
self.emit("template <class Visitor>")
self.emit("static void visit_%s_t(const %s_t &x, Visitor &v) {" \
% (base, base))
self.emit( "LFORTRAN_ASSERT(x.base.type == %sType::%s)" \
% (subs["mod"], base), 1)
self.emit( "switch (x.type) {", 1)
for type_ in sum.types:
self.emit(" case %sType::%s: { v.visit_%s((const %s_t &)x);"
" return; }" % (base, type_.name, type_.name, type_.name))
self.emit(" }")
self.emit("}")
self.emit("")
class ASTVisitorVisitor1b(ASDLVisitor):
def visitModule(self, mod):
self.emit("template <class Visitor>")
self.emit("static void visit_%(mod)s_t(const %(mod)s_t &x, Visitor &v) {" % subs)
self.emit(" switch (x.type) {")
for type_ in sums:
self.emit(" case %sType::%s: { v.visit_%s((const %s_t &)x);"
" return; }" % (subs["mod"], type_, type_, type_))
self.emit(" }")
self.emit("}")
self.emit("")
class ASTVisitorVisitor2(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Visitor base class")
self.emit("")
self.emit("template <class Derived>")
self.emit("class BaseVisitor")
self.emit("{")
self.emit("private:")
self.emit(" Derived& self() { return static_cast<Derived&>(*this); }")
self.emit("public:")
self.emit( "void visit_%(mod)s(const %(mod)s_t &b) { visit_%(mod)s_t(b, self()); }" % subs, 1)
super(ASTVisitorVisitor2, self).visitModule(mod)
self.emit("};")
def visitType(self, tp):
self.visit(tp.value, tp.name)
def visitSum(self, sum, base):
if not is_simple_sum(sum):
self.emit("void visit_%s(const %s_t &b) { visit_%s_t(b, self()); }"\
% (base, base, base), 1)
for type_ in sum.types:
self.emit("""void visit_%s(const %s_t & /* x */) { throw LFortran::LFortranException("visit_%s() not implemented"); }""" \
% (type_.name, type_.name, type_.name), 2)
class ASTWalkVisitorVisitor(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Walk Visitor base class")
self.emit("")
self.emit("template <class Derived>")
self.emit("class BaseWalkVisitor : public BaseVisitor<Derived>")
self.emit("{")
self.emit("private:")
self.emit(" Derived& self() { return static_cast<Derived&>(*this); }")
self.emit("public:")
super(ASTWalkVisitorVisitor, self).visitModule(mod)
self.emit("};")
def visitType(self, tp):
if not (isinstance(tp.value, asdl.Sum) and
is_simple_sum(tp.value)):
super(ASTWalkVisitorVisitor, self).visitType(tp, tp.name)
def visitProduct(self, prod, name):
self.make_visitor(name, prod.fields)
def visitConstructor(self, cons, _):
self.make_visitor(cons.name, cons.fields)
def make_visitor(self, name, fields):
self.emit("void visit_%s(const %s_t &x) {" % (name, name), 1)
self.used = False
have_body = False
for field in fields:
self.visitField(field)
if not self.used:
# Note: a better solution would be to change `&x` to `& /* x */`
# above, but we would need to change emit to return a string.
self.emit("if ((bool&)x) { } // Suppress unused warning", 2)
self.emit("}", 1)
def visitField(self, field):
if (field.type not in asdl.builtin_types and
field.type not in self.data.simple_types):
level = 2
if field.seq:
self.used = True
self.emit("for (size_t i=0; i<x.n_%s; i++) {" % field.name, level)
if field.type in products:
self.emit(" self().visit_%s(x.m_%s[i]);" % (field.type, field.name), level)
else:
if field.type != "symbol":
self.emit(" self().visit_%s(*x.m_%s[i]);" % (field.type, field.name), level)
self.emit("}", level)
else:
if field.type in products:
self.used = True
if field.opt:
self.emit("if (x.m_%s)" % field.name, 2)
level = 3
if field.opt:
self.emit("self().visit_%s(*x.m_%s);" % (field.type, field.name), level)
else:
self.emit("self().visit_%s(x.m_%s);" % (field.type, field.name), level)
else:
if field.type != "symbol":
self.used = True
if field.opt:
self.emit("if (x.m_%s)" % field.name, 2)
level = 3
self.emit("self().visit_%s(*x.m_%s);" % (field.type, field.name), level)
elif field.type == "symbol_table" and field.name in["symtab",
"global_scope"]:
self.used = True
self.emit("for (auto &a : x.m_%s->scope) {" % field.name, 2)
self.emit( "this->visit_symbol(*a.second);", 3)
self.emit("}", 2)
class PickleVisitorVisitor(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Pickle Visitor base class")
self.emit("")
self.emit("template <class Derived>")
self.emit("class PickleBaseVisitor : public BaseVisitor<Derived>")
self.emit("{")
self.emit("private:")
self.emit( "Derived& self() { return static_cast<Derived&>(*this); }", 1)
self.emit("public:")
self.emit( "std::string s, indtd;", 1)
self.emit( "bool use_colors;", 1)
self.emit( "bool indent, start_line = true;", 1)
self.emit( "int indent_level = 0, indent_spaces = 3, lvl = 0;", 1)
self.emit( "int tmp = 0, tmp1 = 0, tmp2 = 2;", 1)
self.emit( "int curly[2000], round[2000];", 1)
self.emit("public:")
self.emit( "PickleBaseVisitor() : use_colors(false), indent(false) { s.reserve(100000); }", 1)
self.emit( "void inc_indent() {", 1)
self.emit( "indent_level++;", 2)
self.emit( "indtd = std::string(indent_level*indent_spaces, ' ');",2)
self.emit( "}",1)
self.emit( "void dec_indent() {", 1)
self.emit( "indent_level--;", 2)
self.emit( "LFORTRAN_ASSERT(indent_level >= 0);", 2)
self.emit( "indtd = std::string(indent_level*indent_spaces, ' ');",2)
self.emit( "}",1)
self.mod = mod
super(PickleVisitorVisitor, self).visitModule(mod)
self.emit("};")
def visitType(self, tp):
super(PickleVisitorVisitor, self).visitType(tp, tp.name)
def visitSum(self, sum, *args):
assert isinstance(sum, asdl.Sum)
if is_simple_sum(sum):
name = args[0] + "Type"
self.make_simple_sum_visitor(name, sum.types)
else:
for tp in sum.types:
self.visit(tp, *args)
def visitProduct(self, prod, name):
self.make_visitor(name, prod.fields, False)
def visitConstructor(self, cons, _):
self.make_visitor(cons.name, cons.fields, True)
def make_visitor(self, name, fields, cons):
self.emit("void visit_%s(const %s_t &x) {" % (name, name), 1)
self.emit( 'if(indent) {',2)
self.emit( 'tmp1++;',3)
self.emit( 'round[tmp1] = indent_level;',3)
self.emit( 'if(start_line) {',3)
self.emit( 'start_line = false;', 4)
self.emit( 's.append(indtd);', 4)
self.emit( 'inc_indent();',4)
self.emit( '} else {', 3)
self.emit( 's.append("\\n"+indtd);', 4)
self.emit( 'inc_indent();',4)
self.emit( '}', 3)
self.emit( '}', 2)
self.emit( 's.append("(");', 2)
subs = {
"Assignment": "=",
"Associate": "=>",
}
if name in subs:
name = subs[name]
if cons:
self.emit( 'if (use_colors) {', 2)
self.emit( 's.append(color(style::bold));', 3)
self.emit( 's.append(color(fg::magenta));', 3)
self.emit( '}', 2)
self.emit( 's.append("%s");' % name, 2)
self.emit( 'if (use_colors) {', 2)
self.emit( 's.append(color(fg::reset));', 3)
self.emit( 's.append(color(style::reset));', 3)
self.emit( '}', 2)
if len(fields) > 0:
self.emit( 's.append(" ");', 2)
self.used = False
for n, field in enumerate(fields):
self.visitField(field, cons)
if n < len(fields) - 1:
self.emit( 's.append(" ");', 2)
self.emit( 'if(indent) {', 2)
self.emit( 'lvl = indent_level;', 3)
self.emit( 'for(int times = 0; times < (lvl - round[tmp1] ); times++)', 3)
self.emit( 'dec_indent();', 4)
self.emit( 'round[tmp1] = 0; if(tmp1 > 1) tmp1--;}', 3)
self.emit( 's.append(")");', 2)
if not self.used:
# Note: a better solution would be to change `&x` to `& /* x */`
# above, but we would need to change emit to return a string.
self.emit("if ((bool&)x) { } // Suppress unused warning", 2)
self.emit("}", 1)
def make_simple_sum_visitor(self, name, types):
self.emit("void visit_%s(const %s &x) {" % (name, name), 1)
self.emit( 'if (use_colors) {', 2)
self.emit( 's.append(color(style::bold));', 3)
self.emit( 's.append(color(fg::green));', 3)
self.emit( '}', 2)
self.emit( 'switch (x) {', 2)
for tp in types:
self.emit( 'case (%s::%s) : {' % (name, tp.name), 3)
self.emit( 'if(indent) s.append("\\n"+indtd);',4)
self.emit( 's.append("%s");' % (tp.name), 4)
self.emit( ' break; }',3)
self.emit( '}', 2)
self.emit( 'if (use_colors) {', 2)
self.emit( 's.append(color(fg::reset));', 3)
self.emit( 's.append(color(style::reset));', 3)
self.emit( '}', 2)
self.emit("}", 1)
def visitField(self, field, cons):
if (field.type not in asdl.builtin_types and
field.type not in self.data.simple_types):
self.used = True
level = 2
if field.type in products:
if field.opt:
template = "self().visit_%s(*x.m_%s);" % (field.type, field.name)
else:
template = "self().visit_%s(x.m_%s);" % (field.type, field.name)
else:
template = "self().visit_%s(*x.m_%s);" % (field.type, field.name)
if field.seq:
self.emit('s.append("[");', level)
self.emit("for (size_t i=0; i<x.n_%s; i++) {" % field.name, level)
if field.type in sums:
self.emit("self().visit_%s(*x.m_%s[i]);" % (field.type, field.name), level+1)
else:
self.emit("self().visit_%s(x.m_%s[i]);" % (field.type, field.name), level+1)
self.emit( 'if (i < x.n_%s-1) s.append(" ");' % (field.name), level+1)
self.emit("}", level)
self.emit('s.append("]");', level)
elif field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit(template, 3)
self.emit("} else {", 2)
self.emit( 's.append("()");', 3)
self.emit("}", 2)
else:
self.emit(template, level)
else:
if field.type == "identifier":
if field.seq:
assert not field.opt
level = 2
self.emit('s.append("[");', level)
self.emit("for (size_t i=0; i<x.n_%s; i++) {" % field.name, level)
self.emit("s.append(x.m_%s[i]);" % (field.name), level+1)
self.emit( 'if (i < x.n_%s-1) s.append(" ");' % (field.name), level+1)
self.emit("}", level)
self.emit('s.append("]");', level)
else:
if field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 's.append(x.m_%s);' % field.name, 3)
self.emit("} else {", 2)
self.emit( 's.append("()");', 3)
self.emit("}", 2)
else:
self.emit('if(indent) s.append("\\n"+indtd);', 2)
self.emit('s.append(x.m_%s);' % field.name, 2)
elif field.type == "node":
assert not field.opt
assert field.seq
level = 2
self.emit('if(indent) s.append("\\n"+indtd);', level)
self.emit('s.append("[");', level)
self.emit("for (size_t i=0; i<x.n_%s; i++) {" % field.name, level)
mod_name = self.mod.name.lower()
self.emit("self().visit_%s(*x.m_%s[i]);" % (mod_name, field.name), level+1)
self.emit( 'if (i < x.n_%s-1) s.append(" ");' % (field.name), level+1)
self.emit("}", level)
self.emit('s.append("]");', level)
elif field.type == "symbol_table":
assert not field.opt
assert not field.seq
if field.name == "parent_symtab":
level = 2
self.emit('if(indent) s.append("\\n"+indtd);', level)
self.emit('s.append(x.m_%s->get_counter());' % field.name, level)
else:
level = 2
self.emit( 'if(indent) {',level)
self.emit( 's.append("\\n"+indtd);', level+1)
self.emit( 'round[++tmp1] = indent_level;',level+1)
self.emit( 'inc_indent();',level+1)
self.emit( '}', level)
self.emit( 's.append("(");', level)
self.emit('if (use_colors) {', level)
self.emit( 's.append(color(fg::yellow));', level+1)
self.emit('}', level)
self.emit('s.append("SymbolTable");', level)
self.emit('if (use_colors) {', level)
self.emit( 's.append(color(fg::reset));', level+1)
self.emit('}', level)
self.emit('s.append(" ");', level)
self.emit( 'if(indent) s.append("\\n"+indtd);', level)
self.emit( 's.append(x.m_%s->get_counter());' % field.name, level)
self.emit( 's.append(" ");', level)
self.emit( 'if(indent) {',level)
self.emit( 's.append("\\n"+indtd);', level+1)
self.emit( 'curly[++tmp] = indent_level;',level+1)
self.emit( 'tmp2 = 1;',level+1)
self.emit( 'inc_indent();',level+1)
self.emit( '}', level)
self.emit( 's.append("{");', level)
self.emit('{', level)
self.emit(' size_t i = 0;', level)
self.emit(' for (auto &a : x.m_%s->scope) {' % field.name, level)
self.emit( 'if(indent) {',level)
self.emit( 's.append("\\n"+indtd);', level+1)
self.emit( 'inc_indent();',level+1)
self.emit( '}', level)
self.emit(' s.append(a.first + ": ");', level)
self.emit(' this->visit_symbol(*a.second);', level)
self.emit(' if (i < x.m_%s->scope.size()-1) { ' % field.name, level)
self.emit(' s.append(", ");', level)
self.emit(' if(indent) {', level)
self.emit(' for(int times = 0; times < tmp2; times++)', level+1)
self.emit(' dec_indent();', level)
self.emit(' }', level)
self.emit(' }', level)
self.emit(' i++;', level)
self.emit(' }', level)
self.emit('}', level)
self.emit( 'if(indent) {',level)
self.emit( 'lvl = indent_level;', level+1)
self.emit( 'for(int times = 0; times < (lvl - curly[tmp] ); times++)', level+1)
self.emit( 'dec_indent();', level+2)
self.emit( 'curly[tmp] = 0; if(tmp > 1) tmp--;', level+1)
self.emit( 'tmp2++;', level+1)
self.emit( 's.append("\\n"+indtd);', level+1)
self.emit( '}', level)
self.emit( 's.append("})");', level)
self.emit( 'if(indent) dec_indent();', level)
elif field.type == "string" and not field.seq:
if field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 's.append("\\"" + std::string(x.m_%s) + "\\"");' % field.name, 3)
self.emit("} else {", 2)
self.emit( 's.append("()");', 3)
self.emit("}", 2)
else:
self.emit('s.append("\\"" + std::string(x.m_%s) + "\\"");' % field.name, 2)
elif field.type == "int" and not field.seq:
if field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 's.append(std::to_string(x.m_%s));' % field.name, 3)
self.emit("} else {", 2)
self.emit( 's.append("()");', 3)
self.emit("}", 2)
else:
self.emit('s.append(std::to_string(x.m_%s));' % field.name, 2)
elif field.type == "float" and not field.seq and not field.opt:
self.emit('s.append(std::to_string(x.m_%s));' % field.name, 2)
elif field.type == "bool" and not field.seq and not field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 's.append(".true.");', 3)
self.emit("} else {", 2)
self.emit( 's.append(".false.");', 3)
self.emit("}", 2)
elif field.type in self.data.simple_types:
if field.opt:
self.emit('s.append("Unimplementedopt");', 2)
else:
self.emit('visit_%sType(x.m_%s);' \
% (field.type, field.name), 2)
else:
self.emit('s.append("Unimplemented' + field.type + '");', 2)
class SerializationVisitorVisitor(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Serialization Visitor base class")
self.emit("")
self.emit("template <class Derived>")
self.emit("class SerializationBaseVisitor : public BaseVisitor<Derived>")
self.emit("{")
self.emit("private:")
self.emit( "Derived& self() { return static_cast<Derived&>(*this); }", 1)
self.emit("public:")
self.mod = mod
super(SerializationVisitorVisitor, self).visitModule(mod)
self.emit("};")
def visitType(self, tp):
super(SerializationVisitorVisitor, self).visitType(tp, tp.name)
def visitSum(self, sum, *args):
assert isinstance(sum, asdl.Sum)
if is_simple_sum(sum):
name = args[0] + "Type"
self.make_simple_sum_visitor(name, sum.types)
else:
for tp in sum.types:
self.visit(tp, *args)
def visitProduct(self, prod, name):
self.make_visitor(name, prod.fields, False)
def visitConstructor(self, cons, _):
self.make_visitor(cons.name, cons.fields, True)
def make_visitor(self, name, fields, cons):
self.emit("void visit_%s(const %s_t &x) {" % (name, name), 1)
if cons:
self.emit( 'self().write_int8(x.base.type);', 2)
self.used = False
for n, field in enumerate(fields):
self.visitField(field, cons, name)
if not self.used:
# Note: a better solution would be to change `&x` to `& /* x */`
# above, but we would need to change emit to return a string.
self.emit("if ((bool&)x) { } // Suppress unused warning", 2)
self.emit("}", 1)
def make_simple_sum_visitor(self, name, types):
self.emit("void visit_%s(const %s &x) {" % (name, name), 1)
self.emit( 'self().write_int8(x);', 2)
self.emit("}", 1)
def visitField(self, field, cons, cons_name):
if (field.type not in asdl.builtin_types and
field.type not in self.data.simple_types):
self.used = True
level = 2
if field.type in products:
if field.opt:
template = "self().visit_%s(*x.m_%s);" % (field.type, field.name)
else:
template = "self().visit_%s(x.m_%s);" % (field.type, field.name)
else:
if field.type == "symbol":
if cons_name == "ExternalSymbol":
template = "// We skip the symbol for ExternalSymbol"
else:
template = "self().write_symbol(*x.m_%s);" \
% field.name
else:
template = "self().visit_%s(*x.m_%s);" % (field.type, field.name)
if field.seq:
self.emit('self().write_int64(x.n_%s);' % field.name, level)
self.emit("for (size_t i=0; i<x.n_%s; i++) {" % field.name, level)
if field.type == "symbol":
self.emit("self().write_symbol(*x.m_%s[i]);" % (field.name), level+1)
elif field.type in sums:
self.emit("self().visit_%s(*x.m_%s[i]);" % (field.type, field.name), level+1)
else:
self.emit("self().visit_%s(x.m_%s[i]);" % (field.type, field.name), level+1)
self.emit("}", level)
elif field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 'self().write_bool(true);', 3)
self.emit(template, 3)
self.emit("} else {", 2)
self.emit( 'self().write_bool(false);', 3)
self.emit("}", 2)
else:
self.emit(template, level)
else:
if field.type == "identifier":
if field.seq:
assert not field.opt
level = 2
self.emit('self().write_int64(x.n_%s);' % field.name, level)
self.emit("for (size_t i=0; i<x.n_%s; i++) {" % field.name, level)
self.emit("self().write_string(x.m_%s[i]);" % (field.name), level+1)
self.emit("}", level)
else:
if field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 'self().write_bool(true);', 3)
self.emit( 'self().write_string(x.m_%s);' % field.name, 3)
self.emit("} else {", 2)
self.emit( 'self().write_bool(false);', 3)
self.emit("}", 2)
else:
self.emit('self().write_string(x.m_%s);' % field.name, 2)
elif field.type == "node":
assert not field.opt
assert field.seq
level = 2
self.emit('self().write_int64(x.n_%s);' % field.name, level)
self.emit("for (size_t i=0; i<x.n_%s; i++) {" % field.name, level)
mod_name = self.mod.name.lower()
self.emit("self().write_int8(x.m_%s[i]->type);" % \
field.name, level+1)
self.emit("self().visit_%s(*x.m_%s[i]);" % (mod_name, field.name), level+1)
self.emit("}", level)
elif field.type == "symbol_table":
assert not field.opt
assert not field.seq
# TODO: write the symbol table consistent with the reader:
if field.name == "parent_symtab":
level = 2
self.emit('self().write_int64(x.m_%s->counter);' % field.name, level)
else:
level = 2
self.emit('self().write_int64(x.m_%s->counter);' % field.name, level)
self.emit('self().write_int64(x.m_%s->scope.size());' % field.name, level)
self.emit('for (auto &a : x.m_%s->scope) {' % field.name, level)
self.emit(' self().write_string(a.first);', level)
self.emit(' this->visit_symbol(*a.second);', level)
self.emit('}', level)
elif field.type == "string" and not field.seq:
if field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 'self().write_bool(true);', 3)
self.emit( 'self().write_string(x.m_%s);' % field.name, 3)
self.emit("} else {", 2)
self.emit( 'self().write_bool(false);', 3)
self.emit("}", 2)
else:
self.emit('self().write_string(x.m_%s);' % field.name, 2)
elif field.type == "int" and not field.seq:
if field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 'self().write_bool(true);', 3)
self.emit( 'self().write_int64(x.m_%s);' % field.name, 3)
self.emit("} else {", 2)
self.emit( 'self().write_bool(false);', 3)
self.emit("}", 2)
else:
self.emit('self().write_int64(x.m_%s);' % field.name, 2)
elif field.type == "bool" and not field.seq and not field.opt:
self.emit("if (x.m_%s) {" % field.name, 2)
self.emit( 'self().write_bool(true);', 3)
self.emit("} else {", 2)
self.emit( 'self().write_bool(false);', 3)
self.emit("}", 2)
elif field.type == "float" and not field.seq and not field.opt:
self.emit('self().write_float64(x.m_%s);' % field.name, 2)
elif field.type in self.data.simple_types:
if field.opt:
raise Exception("Unimplemented opt for field type: " + field.type);
else:
self.emit('visit_%sType(x.m_%s);' \
% (field.type, field.name), 2)
else:
raise Exception("Unimplemented field type: " + field.type);
class DeserializationVisitorVisitor(ASDLVisitor):
def visitModule(self, mod):
self.emit("/" + "*"*78 + "/")
self.emit("// Deserialization Visitor base class")
self.emit("")
self.emit("template <class Derived>")
self.emit("class DeserializationBaseVisitor : public BaseVisitor<Derived>")
self.emit("{")
self.emit("private:")
self.emit( "Derived& self() { return static_cast<Derived&>(*this); }", 1)
self.emit("public:")
self.emit( "Allocator &al;", 1)
self.emit( "bool load_symtab_id;", 1)
self.emit( "std::map<uint64_t,SymbolTable*> id_symtab_map;", 1)
self.emit( r"DeserializationBaseVisitor(Allocator &al, bool load_symtab_id) : al{al}, load_symtab_id{load_symtab_id} {}", 1)
self.emit_deserialize_node();
self.mod = mod
super(DeserializationVisitorVisitor, self).visitModule(mod)
self.emit("};")
def visitType(self, tp):
super(DeserializationVisitorVisitor, self).visitType(tp, tp.name)
def visitSum(self, sum, *args):
assert isinstance(sum, asdl.Sum)
if is_simple_sum(sum):
self.emit("%sType deserialize_%s() {" % (args[0], args[0]), 1)
self.emit( 'uint8_t t = self().read_int8();', 2)
self.emit( '%sType ty = static_cast<%sType>(t);' % (args[0], args[0]), 2)
self.emit( 'return ty;', 2)
self.emit("}", 1)
else:
for tp in sum.types:
self.visit(tp, *args)
self.emit("%s_t* deserialize_%s() {" % (subs["mod"], args[0]), 1)
self.emit( 'uint8_t t = self().read_int8();', 2)
self.emit( '%s::%sType ty = static_cast<%s::%sType>(t);' % (subs["mod"].upper(), args[0],
subs["mod"].upper(), args[0]), 2)
self.emit( 'switch (ty) {', 2)
for tp in sum.types:
self.emit( 'case (%s::%sType::%s) : return self().deserialize_%s();' \
% (subs["mod"].upper(), args[0], tp.name, tp.name), 3)
self.emit( 'default : throw LFortranException("Unknown type in deserialize_%s()");' % args[0], 3)
self.emit( '}', 2)
self.emit( 'throw LFortranException("Switch statement above was not exhaustive.");', 2)
self.emit("}", 1)
def emit_deserialize_node(self):
name = "node"
self.emit("%s_t* deserialize_%s() {" % (subs["mod"], name), 1)
self.emit( 'uint8_t t = self().read_int8();', 2)
self.emit( '%s::%sType ty = static_cast<%s::%sType>(t);' % (subs["mod"].upper(), subs["mod"],
subs["mod"].upper(), subs["mod"]), 2)
self.emit( 'switch (ty) {', 2)
for tp in sums:
self.emit( 'case (%s::%sType::%s) : return self().deserialize_%s();' \
% (subs["mod"].upper(), subs["mod"], tp, tp), 3)
self.emit( 'default : throw LFortranException("Unknown type in deserialize_%s()");' % name, 3)
self.emit( '}', 2)
self.emit( 'throw LFortranException("Switch statement above was not exhaustive.");', 2)
self.emit( '}', 1)
def visitProduct(self, prod, name):
self.emit("%s_t deserialize_%s() {" % (name, name), 1)
self.emit( '%s_t x;' % (name), 2)
for field in prod.fields:
if field.seq:
assert not field.opt
assert field.type not in simple_sums
if field.type in asdl.builtin_types:
if field.type == "identifier":
self.emit('{', 2)
self.emit('uint64_t n = self().read_int64();', 3)
self.emit("Vec<char*> v;", 3)
self.emit("v.reserve(al, n);", 3)
self.emit("for (uint64_t i=0; i<n; i++) {", 3)
self.emit("v.push_back(al, self().read_cstring());", 4)
self.emit('}', 3)
self.emit('x.m_%s = v.p;' % (field.name), 3)
self.emit('x.n_%s = v.n;' % (field.name), 3)
self.emit('}', 2)
else:
assert False
else:
self.emit('{', 2)
self.emit('uint64_t n = self().read_int64();', 3)
if field.type in products:
self.emit("Vec<%s_t> v;" % (field.type), 3)
else:
self.emit("Vec<%s_t*> v;" % (field.type), 3)
self.emit("v.reserve(al, n);", 3)
self.emit("for (uint64_t i=0; i<n; i++) {", 3)
if field.type in products:
self.emit("v.push_back(al, self().deserialize_%s());" \
% (field.type), 4)
else:
self.emit("v.push_back(al, down_cast<%s_t>(self().deserialize_%s()));" % (field.type, field.type), 4)
self.emit('}', 3)
self.emit('x.m_%s = v.p;' % (field.name), 3)
self.emit('x.n_%s = v.n;' % (field.name), 3)
self.emit('}', 2)
else:
self.emit('{', 2)
if field.opt:
self.emit("bool present=self().read_bool();", 3)
if field.type in asdl.builtin_types:
if field.type == "identifier":
rhs = "self().read_cstring()"
elif field.type == "string":
rhs = "self().read_cstring()"
else:
print(field.type)
assert False
elif field.type in simple_sums:
rhs = "deserialize_%s()" % (field.type)
else:
assert field.type not in products
if field.type == "symbol":
rhs = "self().read_symbol()"
else:
rhs = "down_cast<%s_t>(deserialize_%s())" % (field.type,
field.type)
if field.opt:
self.emit('if (present) {', 3)
self.emit('x.m_%s = %s;' % (field.name, rhs), 4)
if field.opt:
self.emit('} else {', 3)
self.emit( 'x.m_%s = nullptr;' % (field.name), 4)
self.emit('}', 3)
self.emit('}', 2)
self.emit( 'return x;', 2)
self.emit("}", 1)
def visitConstructor(self, cons, _):
name = cons.name
self.emit("%s_t* deserialize_%s() {" % (subs["mod"], name), 1)