Initial commit.
This commit is contained in:
Matt Pharr
203
decl.h
Normal file
203
decl.h
Normal file
@@ -0,0 +1,203 @@
|
||||
/*
|
||||
Copyright (c) 2010-2011, Intel Corporation
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in the
|
||||
documentation and/or other materials provided with the distribution.
|
||||
|
||||
* Neither the name of Intel Corporation nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
||||
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
||||
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
||||
OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/** @file decl.h
|
||||
@brief Declarations related to type declarations; the parser basically
|
||||
creates instances of these classes, which are then turned into actual
|
||||
Types.
|
||||
|
||||
Three classes work together to represent declarations. As an example,
|
||||
consider a declaration like:
|
||||
|
||||
static uniform int foo, bar[10];
|
||||
|
||||
An instance of the Declaration class represents this entire declaration
|
||||
of two variables, 'foo' and 'bar'. It holds a single instance of the
|
||||
DeclSpecs class represents the common specifiers for all of the
|
||||
variables--here, that the declaration has the 'static' and 'uniform'
|
||||
qualifiers, and that it's basic type is 'int'. Then for each variable
|
||||
declaration, the Declaraiton class holds an instance of a Declarator,
|
||||
which in turn records the per-variable information like the symbol
|
||||
name, array size (if any), initializer expression, etc.
|
||||
*/
|
||||
|
||||
#ifndef ISPC_DECL_H
|
||||
#define ISPC_DECL_H
|
||||
|
||||
#include "ispc.h"
|
||||
|
||||
enum StorageClass {
|
||||
SC_NONE,
|
||||
SC_EXTERN,
|
||||
SC_EXPORT,
|
||||
SC_STATIC,
|
||||
SC_TYPEDEF,
|
||||
SC_EXTERN_C
|
||||
};
|
||||
|
||||
|
||||
/* Multiple qualifiers can be provided with types in declarations;
|
||||
therefore, they are set up so that they can be ANDed together into an
|
||||
int. */
|
||||
#define TYPEQUAL_NONE 0
|
||||
#define TYPEQUAL_CONST (1<<0)
|
||||
#define TYPEQUAL_UNIFORM (1<<1)
|
||||
#define TYPEQUAL_VARYING (1<<2)
|
||||
#define TYPEQUAL_TASK (1<<3)
|
||||
#define TYPEQUAL_REFERENCE (1<<4)
|
||||
#define TYPEQUAL_UNSIGNED (1<<5)
|
||||
#define TYPEQUAL_INLINE (1<<6)
|
||||
|
||||
/** @brief Representation of the declaration specifiers in a declaration.
|
||||
|
||||
In other words, this represents all of the stuff that applies to all of
|
||||
the (possibly multiple) variables in a declaration.
|
||||
*/
|
||||
class DeclSpecs {
|
||||
public:
|
||||
DeclSpecs(const Type *t = NULL, StorageClass sc = SC_NONE, int tq = TYPEQUAL_NONE);
|
||||
|
||||
void Print() const;
|
||||
|
||||
StorageClass storageClass;
|
||||
|
||||
/** Zero or more of the TYPEQUAL_* values, ANDed together. */
|
||||
int typeQualifier;
|
||||
|
||||
/** The basic type provided in the declaration; this should be an
|
||||
AtomicType, a StructType, or a VectorType; other types (like
|
||||
ArrayTypes) will end up being created if a particular declaration
|
||||
has an array size, etc.
|
||||
*/
|
||||
const Type *baseType;
|
||||
|
||||
/** If this is a declaration with a vector type, this gives the vector
|
||||
width. For non-vector types, this is zero.
|
||||
*/
|
||||
int vectorSize;
|
||||
|
||||
/** If this is a declaration with an "soa<n>" qualifier, this gives the
|
||||
SOA width specified. Otherwise this is zero.
|
||||
*/
|
||||
int soaWidth;
|
||||
};
|
||||
|
||||
|
||||
/** @brief Representation of the declaration of a single variable.
|
||||
|
||||
In conjunction with an instance of the DeclSpecs, this gives us
|
||||
everything we need for a full variable declaration.
|
||||
*/
|
||||
class Declarator {
|
||||
public:
|
||||
Declarator(Symbol *s, SourcePos p);
|
||||
|
||||
/** As the parser peels off array dimension declarations after the
|
||||
symbol name, it calls this method to provide them to the
|
||||
Declarator.
|
||||
*/
|
||||
void AddArrayDimension(int size);
|
||||
|
||||
/** Once a DeclSpecs instance is available, this method completes the
|
||||
initialization of the Symbol, setting its Type accordingly.
|
||||
*/
|
||||
void InitFromDeclSpecs(DeclSpecs *ds);
|
||||
|
||||
/** Get the actual type of the combination of Declarator and the given
|
||||
DeclSpecs */
|
||||
const Type *GetType(DeclSpecs *ds) const;
|
||||
|
||||
void Print() const;
|
||||
|
||||
const SourcePos pos;
|
||||
Symbol *sym;
|
||||
/** If this declarator includes an array specification, the sizes of
|
||||
the array dimensions are represented here.
|
||||
*/
|
||||
std::vector<int> arraySize;
|
||||
/** Initialization expression for the variable. May be NULL. */
|
||||
Expr *initExpr;
|
||||
bool isFunction;
|
||||
std::vector<Declaration *> *functionArgs;
|
||||
};
|
||||
|
||||
|
||||
/** @brief Representation of a full declaration of one or more variables,
|
||||
including the shared DeclSpecs as well as the per-variable Declarators.
|
||||
*/
|
||||
class Declaration {
|
||||
public:
|
||||
Declaration(DeclSpecs *ds, std::vector<Declarator *> *dlist = NULL) {
|
||||
declSpecs = ds;
|
||||
if (dlist != NULL)
|
||||
declarators = *dlist;
|
||||
for (unsigned int i = 0; i < declarators.size(); ++i)
|
||||
if (declarators[i] != NULL)
|
||||
declarators[i]->InitFromDeclSpecs(declSpecs);
|
||||
}
|
||||
Declaration(DeclSpecs *ds, Declarator *d) {
|
||||
declSpecs = ds;
|
||||
if (d) {
|
||||
d->InitFromDeclSpecs(ds);
|
||||
declarators.push_back(d);
|
||||
}
|
||||
}
|
||||
|
||||
/** Adds the symbols for the variables in the declaration to the symbol
|
||||
table. */
|
||||
void AddSymbols(SymbolTable *st) const;
|
||||
void Print() const;
|
||||
|
||||
DeclSpecs *declSpecs;
|
||||
std::vector<Declarator *> declarators;
|
||||
};
|
||||
|
||||
|
||||
/** The parser creates instances of StructDeclaration for the members of
|
||||
structs as it's parsing their declarations. */
|
||||
struct StructDeclaration {
|
||||
StructDeclaration(const Type *t, std::vector<Declarator *> *d)
|
||||
: type(t), declarators(d) { }
|
||||
|
||||
const Type *type;
|
||||
std::vector<Declarator *> *declarators;
|
||||
};
|
||||
|
||||
|
||||
/** Given a set of StructDeclaration instances, this returns the types of
|
||||
the elements of the corresponding struct and their names. */
|
||||
extern void GetStructTypesAndNames(const std::vector<StructDeclaration *> &sd,
|
||||
std::vector<const Type *> *elementTypes,
|
||||
std::vector<std::string> *elementNames);
|
||||
|
||||
#endif // ISPC_DECL_H
|
||||
Reference in New Issue
Block a user