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Added first code for a parse tree implementation.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@287 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2000-08-16 09:10:50 +00:00
parent 25f5c69efa
commit 2bcb747b58
8 changed files with 242 additions and 2 deletions
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1
src/cc65/datatype.c
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@ -57,6 +57,7 @@
/* Predefined type strings */
type type_uchar [] = { T_UCHAR, T_END };
type type_int [] = { T_INT, T_END };
type type_uint [] = { T_UINT, T_END };
type type_long [] = { T_LONG, T_END };

1
src/cc65/datatype.h
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@ -138,6 +138,7 @@ typedef unsigned short type;
#define DECODE_SIZE 5
/* Predefined type strings */
extern type type_uchar [];
extern type type_int [];
extern type type_uint [];
extern type type_long [];

57
src/cc65/exprnode.c Normal file
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@ -0,0 +1,57 @@
/*****************************************************************************/
/* */
/* exprnode.c */
/* */
/* Expression node structure for the cc65 C compiler */
/* */
/* */
/* */
/* (C) 2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include "exprnode.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void InitExprNode (ExprNode* E)
/* Initialize a new expression node */
{
E->Left = 0;
E->Right = 0;
E->NT = NT_NONE;
E->Type = 0;
E->LValue = 0;
}

169
src/cc65/exprnode.h Normal file
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@ -0,0 +1,169 @@
/*****************************************************************************/
/* */
/* exprnode.h */
/* */
/* Expression node structure for the cc65 C compiler */
/* */
/* */
/* */
/* (C) 2000 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef EXPRNODE_H
#define EXPRNODE_H
#include "datatype.h"
/*****************************************************************************/
/* Forwards */
/*****************************************************************************/
struct SymEntry;
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Node types */
typedef enum {
NT_NONE, /* None (invalid) op */
NT_SYM, /* Symbol */
NT_CONST, /* A constant of some sort */
NT_ICAST, /* Implicit type cast */
NT_ECAST, /* Explicit type cast */
NT_REG_A, /* A register */
NT_REG_X, /* X register */
NT_REG_Y, /* Y register */
NT_REG_AX, /* AX register */
NT_REG_EAX, /* EAX register */
NT_CALLFUNC, /* Function call */
NT_PUSH, /* Push the value onto the stack */
NT_POP, /* Pop the value from the stack */
NT_NOT, /* ~ */
NT_PLUS, /* + */
NT_MINUS, /* - */
NT_MUL, /* * */
NT_DIV, /* / */
NT_SHL, /* << */
NT_SHR, /* >> */
NT_AND, /* & */
NT_OR, /* | */
NT_XOR, /* ^ */
NT_ASSIGN, /* = */
NT_PLUS_ASSIGN, /* += */
NT_MINUS_ASSIGN, /* -= */
NT_MUL_ASSIGN, /* *= */
NT_DIV_ASSIGN, /* /= */
NT_SHL_ASSIGN, /* <<= */
NT_SHR_ASSIGN, /* >>= */
NT_AND_ASSIGN, /* &= */
NT_OR_ASSIGN, /* |= */
NT_XOR_ASSIGN, /* ^= */
NT_PRE_DEC, /* -- */
NT_POST_DEC, /* -- */
NT_PRE_INC, /* ++ */
NT_POST_INC, /* ++ */
NT_BOOL_NOT, /* ! */
NT_BOOL_OR, /* || */
NT_BOOL_AND, /* && */
NT_EQ, /* == */
NT_NE, /* != */
NT_LT, /* < */
NT_LE, /* <= */
NT_GT, /* > */
NT_GE, /* >= */
NT_DEREF, /* * and others */
NT_COUNT /* Operation count */
} nodetype_t;
/* Struct describing one node in an expression tree */
typedef struct ExprNode ExprNode;
struct ExprNode {
ExprNode* Left; /* Left and right leaves */
ExprNode* Right;
nodetype_t NT; /* Node type */
type* Type; /* Resulting type */
int LValue; /* True if this is an lvalue */
union {
/* Branch data */
ExprNode* Test; /* Third expr for ternary op */
/* Leave data */
long I; /* Constant int value if any */
double F; /* Constant float value if any */
struct SymEntry* Sym; /* Symbol table entry if any */
} V;
};
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void InitExprNode (ExprNode* E);
/* Initialize a new expression node */
/* End of exprnode.h */
#endif

4
src/cc65/make/gcc.mak
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@ -24,6 +24,8 @@ OBJS = anonname.o \
declare.o \
error.o \
expr.o \
exprnode.o \
exprtree.o \
funcdesc.o \
function.o \
global.o \
@ -68,7 +70,7 @@ cc65: $(OBJS)
clean:
rm -f *~ core *.map
zap: clean
rm -f *.o $(EXECS) .depend

4
src/cc65/make/watcom.mak
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@ -79,6 +79,8 @@ OBJS = anonname.obj \
declare.obj \
error.obj \
expr.obj \
exprnode.obj \
exprtree.obj \
funcdesc.obj \
function.obj \
global.obj \
@ -136,6 +138,8 @@ FILE datatype.obj
FILE declare.obj
FILE error.obj
FILE expr.obj
FILE exprnode.obj
FILE exprtree.obj
FILE funcdesc.obj
FILE function.obj
FILE global.obj

3
src/cc65/scanner.c
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@ -48,8 +48,11 @@ static const struct Keyword {
unsigned char Tok; /* The token */
unsigned char Type; /* Token type */
} Keywords [] = {
{ "__A__", TOK_A, TT_C },
{ "__AX__", TOK_AX, TT_C },
{ "__EAX__", TOK_EAX, TT_C },
{ "__X__", TOK_X, TT_C },
{ "__Y__", TOK_Y, TT_C },
{ "__asm__", TOK_ASM, TT_C },
{ "__attribute__", TOK_ATTRIBUTE, TT_C },
{ "__far__", TOK_FAR, TT_C },

5
src/cc65/scanner.h
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@ -127,9 +127,12 @@ typedef enum token_t {
TOK_ATTRIBUTE,
TOK_FAR,
TOK_FASTCALL,
TOK_A,
TOK_X,
TOK_Y,
TOK_AX,
TOK_EAX,
TOK_PRAGMA
} token_t;