f45ab0744e
The stuff in decl.h/decl.cpp is messy, largely due to its close mapping to C-style variable declarations. This checkin has updated code throughout all of the declaration statement, variable, and function code that operates on symbols and types directly. Thus, Decl* related stuff is now localized to decl.h/decl.cpp and the parser. Issue #13.
95 lines
3.3 KiB
C++
95 lines
3.3 KiB
C++
/*
|
|
Copyright (c) 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 ast.h
|
|
@brief
|
|
*/
|
|
|
|
#ifndef ISPC_AST_H
|
|
#define ISPC_AST_H 1
|
|
|
|
#include "ispc.h"
|
|
#include <vector>
|
|
|
|
/** @brief Abstract base class for nodes in the abstract syntax tree (AST).
|
|
|
|
This class defines a basic interface that all abstract syntax tree
|
|
(AST) nodes must implement. The base classes for both expressions
|
|
(Expr) and statements (Stmt) inherit from this class.
|
|
*/
|
|
class ASTNode {
|
|
public:
|
|
ASTNode(SourcePos p) : pos(p) { }
|
|
virtual ~ASTNode();
|
|
|
|
/** The Optimize() method should perform any appropriate early-stage
|
|
optimizations on the node (e.g. constant folding). The caller
|
|
should use the returned ASTNode * in place of the original node.
|
|
This method may return NULL if an error is encountered during
|
|
optimization. */
|
|
virtual ASTNode *Optimize() = 0;
|
|
|
|
/** Type checking should be performed by the node when this method is
|
|
called. In the event of an error, a NULL value may be returned.
|
|
As with ASTNode::Optimize(), the caller should store the returned
|
|
pointer in place of the original ASTNode *. */
|
|
virtual ASTNode *TypeCheck() = 0;
|
|
|
|
virtual int EstimateCost() const = 0;
|
|
|
|
/** All AST nodes must track the file position where they are
|
|
defined. */
|
|
const SourcePos pos;
|
|
};
|
|
|
|
|
|
/** Simple representation of the abstract syntax trees for all of the
|
|
functions declared in a compilation unit.
|
|
*/
|
|
class AST {
|
|
public:
|
|
/** Add the AST for a function described by the given declaration
|
|
information and source code. */
|
|
void AddFunction(Symbol *sym, const std::vector<Symbol *> &args,
|
|
Stmt *code);
|
|
|
|
/** Generate LLVM IR for all of the functions into the current
|
|
module. */
|
|
void GenerateIR();
|
|
|
|
private:
|
|
std::vector<Function *> functions;
|
|
};
|
|
|
|
#endif // ISPC_AST_H
|