DefinitionsImpl.mesa
Copyright Ó 1990 by Xerox Corporation. All rights reserved.
Theimer, May 17, 1989 3:56:05 pm PDT
Changed by Theimer on May 20, 1989 6:42:37 pm PDT
Last changed by Theimer on May 31, 1989 3:54:36 pm PDT
Spreitze, January 9, 1992 10:02 am PST
DIRECTORY
CCTypes USING [CCTypeProcs, CreateCedarType, GetGroundType, GetTypeClass, GetIndirectType, PrintTypeBracketed, sia],
CirioTypes USING[CompilerContext, Type],
Definitions,
IO,
Rope,
StructuredStreams;
=
BEGIN
OPEN CCTypes, Definitions,
SS:StructuredStreams;
CC: TYPE = CirioTypes.CompilerContext;
Type: TYPE = CirioTypes.Type;
Type operations.
CreateDefinitionType:
PUBLIC PROC [underType: Type, name: Rope
.ROPE, cc:
CC]
RETURNS [Type] = {
dti: DefinitionTypeInfo ← NEW[DefinitionTypeInfoBody ← [underType, name]];
type: Type ← CCTypes.CreateCedarType[$definition, DefinitionTypeCCTypeProcs, IndirectDefinitionTypeCCTypeProcs, cc, dti, underType];
RETURN [type];
};
DefinitionTypeCCTypeProcs:
REF
CCTypes.CCTypeProcs ←
NEW[CCTypes.CCTypeProcs ←[
getGroundType: DefinitionCCTypesGetGroundType,
getTypeRepresentation: DefinitionTypeGetTypeRepresentation,
printType: DefinitionCCTypesPrintType]];
IndirectDefinitionTypeCCTypeProcs:
REF
CCTypes.CCTypeProcs ←
NEW[CCTypes.CCTypeProcs ←[
getGroundType: IndirectDefinitionCCTypesGetGroundType,
getTypeRepresentation: DefinitionTypeGetTypeRepresentation,
printType: DefinitionCCTypesPrintType]];
DefinitionTypeGetTypeRepresentation:
PROC[type: Type, cc:
CC, procData:
REF
ANY]
RETURNS[Type]
~ {RETURN[NIL]};
DefinitionCCTypesGetGroundType:
PROC [type: Type, cc:
CC, procData:
REF
ANY]
RETURNS [Type] = {
info: DefinitionTypeInfo ← NARROW[procData];
IF CCTypes.GetTypeClass[info.underType] = $definition
THEN {
RETURN [GetGroundType[type, cc, info.underType]];
}
ELSE {
RETURN [info.underType];
};
};
DefinitionCCTypesPrintType:
PROC [to:
IO.
STREAM, type: Type, printDepth:
INT, printWidth:
INT, cc:
CC, procData:
REF
ANY] = {
info: DefinitionTypeInfo ← NARROW[procData];
to.PutRope[info.name];
IF printDepth <= 1 OR IsBaseType[info.name] THEN RETURN;
to.PutRope[": TYPE"];
SS.Bp[to, lookLeft, CCTypes.sia, " "];
to.PutRope["= "];
CCTypes.PrintTypeBracketed[to, info.underType, printDepth-1, printWidth, cc];
RETURN};
IndirectDefinitionCCTypesGetGroundType:
PROC [type: Type, cc:
CC, procData:
REF
ANY]
RETURNS [Type] = {
info: DefinitionTypeInfo ← NARROW[procData];
indirectType: Type ← GetIndirectType[info.underType];
IF CCTypes.GetTypeClass[indirectType] = $definition
THEN {
RETURN [GetGroundType[type, cc, indirectType]];
}
ELSE {
RETURN [indirectType];
};
};
IsBaseType:
PROC [typeName: Rope.
ROPE]
RETURNS [
BOOLEAN] = {
IF Rope.Equal[typeName, "INT"]
OR
Rope.Equal[typeName, "INT16"]
OR
Rope.Equal[typeName, "CARDINAL"]
OR
Rope.Equal[typeName, "CARD"]
OR
Rope.Equal[typeName, "REAL"]
OR
Rope.Equal[typeName, "CHAR"]
OR
Rope.Equal[typeName, "BOOLEAN"]
ELSE {
RETURN [FALSE];
};
};
Node operations. There are no definition nodes.