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/*
* Mesa 3-D graphics library
* Version: 6.5.2
*
* Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef SLANG_COMPILE_OPERATION_H
#define SLANG_COMPILE_OPERATION_H
/**
* Types of slang operations.
* These are the types of the AST (abstract syntax tree) nodes.
* [foo] indicates a sub-tree or reference to another type of node
*/
typedef enum slang_operation_type_
{
SLANG_OPER_NONE,
SLANG_OPER_BLOCK_NO_NEW_SCOPE, /* "{" sequence "}" */
SLANG_OPER_BLOCK_NEW_SCOPE, /* "{" sequence "}" */
SLANG_OPER_VARIABLE_DECL, /* [type] [var] or [var] = [expr] */
SLANG_OPER_ASM,
SLANG_OPER_BREAK, /* "break" statement */
SLANG_OPER_CONTINUE, /* "continue" statement */
SLANG_OPER_DISCARD, /* "discard" (kill fragment) statement */
SLANG_OPER_RETURN, /* "return" [expr] */
SLANG_OPER_GOTO, /* jump to label */
SLANG_OPER_LABEL, /* a jump target */
SLANG_OPER_EXPRESSION, /* [expr] */
SLANG_OPER_IF, /* "if" [0] then [1] else [2] */
SLANG_OPER_WHILE, /* "while" [cond] [body] */
SLANG_OPER_DO, /* "do" [body] "while" [cond] */
SLANG_OPER_FOR, /* "for" [init] [while] [incr] [body] */
SLANG_OPER_VOID, /* nop */
SLANG_OPER_LITERAL_BOOL, /* "true" or "false" */
SLANG_OPER_LITERAL_INT, /* integer literal */
SLANG_OPER_LITERAL_FLOAT, /* float literal */
SLANG_OPER_IDENTIFIER, /* var name, func name, etc */
SLANG_OPER_SEQUENCE, /* [expr] "," [expr] "," etc */
SLANG_OPER_ASSIGN, /* [var] "=" [expr] */
SLANG_OPER_ADDASSIGN, /* [var] "+=" [expr] */
SLANG_OPER_SUBASSIGN, /* [var] "-=" [expr] */
SLANG_OPER_MULASSIGN, /* [var] "*=" [expr] */
SLANG_OPER_DIVASSIGN, /* [var] "/=" [expr] */
/*SLANG_OPER_MODASSIGN, */
/*SLANG_OPER_LSHASSIGN, */
/*SLANG_OPER_RSHASSIGN, */
/*SLANG_OPER_ORASSIGN, */
/*SLANG_OPER_XORASSIGN, */
/*SLANG_OPER_ANDASSIGN, */
SLANG_OPER_SELECT, /* [expr] "?" [expr] ":" [expr] */
SLANG_OPER_LOGICALOR, /* [expr] "||" [expr] */
SLANG_OPER_LOGICALXOR, /* [expr] "^^" [expr] */
SLANG_OPER_LOGICALAND, /* [expr] "&&" [expr] */
/*SLANG_OPER_BITOR, */
/*SLANG_OPER_BITXOR, */
/*SLANG_OPER_BITAND, */
SLANG_OPER_EQUAL, /* [expr] "==" [expr] */
SLANG_OPER_NOTEQUAL, /* [expr] "!=" [expr] */
SLANG_OPER_LESS, /* [expr] "<" [expr] */
SLANG_OPER_GREATER, /* [expr] ">" [expr] */
SLANG_OPER_LESSEQUAL, /* [expr] "<=" [expr] */
SLANG_OPER_GREATEREQUAL, /* [expr] ">=" [expr] */
/*SLANG_OPER_LSHIFT, */
/*SLANG_OPER_RSHIFT, */
SLANG_OPER_ADD, /* [expr] "+" [expr] */
SLANG_OPER_SUBTRACT, /* [expr] "-" [expr] */
SLANG_OPER_MULTIPLY, /* [expr] "*" [expr] */
SLANG_OPER_DIVIDE, /* [expr] "/" [expr] */
/*SLANG_OPER_MODULUS, */
SLANG_OPER_PREINCREMENT, /* "++" [var] */
SLANG_OPER_PREDECREMENT, /* "--" [var] */
SLANG_OPER_PLUS, /* "-" [expr] */
SLANG_OPER_MINUS, /* "+" [expr] */
/*SLANG_OPER_COMPLEMENT, */
SLANG_OPER_NOT, /* "!" [expr] */
SLANG_OPER_SUBSCRIPT, /* [expr] "[" [expr] "]" */
SLANG_OPER_CALL, /* [func name] [param] [param] [...] */
SLANG_OPER_FIELD, /* i.e.: ".next" or ".xzy" or ".xxx" etc */
SLANG_OPER_POSTINCREMENT, /* [var] "++" */
SLANG_OPER_POSTDECREMENT /* [var] "--" */
} slang_operation_type;
/**
* A slang_operation is basically a compiled instruction (such as assignment,
* a while-loop, a conditional, a multiply, a function call, etc).
* The AST (abstract syntax tree) is built from these nodes.
* NOTE: This structure could have been implemented as a union of simpler
* structs which would correspond to the operation types above.
*/
typedef struct slang_operation_
{
slang_operation_type type;
struct slang_operation_ *children;
GLuint num_children;
GLfloat literal[4]; /**< Used for float, int and bool values */
GLuint literal_size; /**< 1, 2, 3, or 4 */
slang_atom a_id; /**< type: asm, identifier, call, field */
slang_variable_scope *locals; /**< local vars for scope */
struct slang_function_ *fun; /**< If type == SLANG_OPER_CALL */
struct slang_variable_ *var; /**< If type == slang_oper_identier */
struct slang_label_ *label; /**< If type == SLANG_OPER_LABEL or GOTO */
} slang_operation;
extern GLboolean
slang_operation_construct(slang_operation *);
extern void
slang_operation_destruct(slang_operation *);
extern GLboolean
slang_operation_copy(slang_operation *, const slang_operation *);
extern slang_operation *
slang_operation_new(GLuint count);
extern void
slang_operation_delete(slang_operation *oper);
extern slang_operation *
slang_operation_grow(GLuint *numChildren, slang_operation **children);
extern slang_operation *
slang_operation_insert(GLuint *numChildren, slang_operation **children,
GLuint pos);
#endif /* SLANG_COMPILE_OPERATION_H */
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