/*
?*?gEDA?-?GNU?Electronic?Design?Automation
?*?This?files?is?a?part?of?gerbv.
?*
?*???Copyright?（C）?2000-2002?Stefan?Petersen?（spe@stacken.kth.se）
?*
?*?$Id$
?*
?*?This?program?is?free?software;?you?can?redistribute?it?and/or?modify
?*?it?under?the?terms?of?the?GNU?General?Public?License?as?published?by
?*?the?Free?Software?Foundation;?either?version?2?of?the?License?or
?*?（at?your?option）?any?later?version.
?*
?*?This?program?is?distributed?in?the?hope?that?it?will?be?useful
?*?but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
?*?MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
?*?GNU?General?Public?License?for?more?details.
?*
?*?You?should?have?received?a?copy?of?the?GNU?General?Public?License
?*?along?with?this?program;?if?not?write?to?the?Free?Software
?*?Foundation?Inc.?59?Temple?Place?Suite?330?Boston?MA?02111?USA
?*/

/**?\file?amacro.c
????\brief?Aperture?macro?parsing?functions
????\ingroup?libgerbv
*/

#include?
#include?
#include?

#include?“gerbv.h“
#include?“gerb_file.h“
#include?“amacro.h“

/*
?*?Allocates?a?new?instruction?structure
?*/
static?gerbv_instruction_t?*
new_instruction（void）
{
????gerbv_instruction_t?*instruction;

????instruction?=?（gerbv_instruction_t?*）malloc（sizeof（gerbv_instruction_t））;
????if?（instruction?==?NULL）?{
	free（instruction）;
	return?NULL;
????}

????memset（instruction?0?sizeof（gerbv_instruction_t））;
????
????return?instruction;
}?/*?new_instruction?*/


/*
?*?Allocates?a?new?amacro?structure
?*/
static?gerbv_amacro_t?*
new_amacro（void）
{
????gerbv_amacro_t?*amacro;

????amacro?=?（gerbv_amacro_t?*）malloc（sizeof（gerbv_amacro_t））;
????if?（amacro?==?NULL）?{
	free（amacro）;
	return?NULL;
????}

????memset（amacro?0?sizeof（gerbv_amacro_t））;
????
????return?amacro;
}?/*?new_amacro?*/


/*
?*?Defines?precedence?of?operators?used?in?aperture?macros
?*/
static?int
math_op_prec（gerbv_opcodes_t?math_op）
{
????switch?（math_op）?{
????case?GERBV_OPCODE_ADD:
????case?GERBV_OPCODE_SUB:
	return?1;
????case?GERBV_OPCODE_MUL:
????case?GERBV_OPCODE_DIV:
	return?2;
????default:
	;
????}

????return?0;
}?/*?math_op_prec?*/


/*
?*?Operations?on?the?operator?stack.?The?operator?stack?is?used?in?the
?*?“shunting?yard?algorithm“?to?achive?precedence.
?*?Aperture?macros?has?a?very?limited?set?of?operators?and?matching?precedence
?*?so?it?is?solved?by?a?small?array?and?an?index?to?that?array.
?*/
#define?MATH_OP_STACK_SIZE?2
#define?MATH_OP_PUSH（val）?math_op[math_op_idx++]?=?val
#define?MATH_OP_POP?math_op[--math_op_idx]
#define?MATH_OP_TOP?（math_op_idx?>?0）?math_op[math_op_idx?-?1]:GERBV_OPCODE_NOP
#define?MATH_OP_EMPTY?（math_op_idx?==?0）


/*
?*?Parses?the?definition?of?an?aperture?macro
?*/
gerbv_amacro_t?*
parse_aperture_macro（gerb_file_t?*fd）
{
????gerbv_amacro_t?*amacro;
????gerbv_instruction_t?*ip?=?NULL;
????int?primitive?=?0?c?found_primitive?=?0;
????gerbv_opcodes_t?math_op[MATH_OP_STACK_SIZE];
????int?math_op_idx?=?0;
????int?comma?=?0;?/*?Just?read?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????9519??2014-09-07?10:29??gerbv_vc6.dsp

?????文件????????524??2014-09-07?10:29??gerbv_vc6.dsw

?????文件?????246784??2014-09-07?10:29??gerbv_vc6.ncb

?????文件??????58880??2014-09-07?10:29??gerbv_vc6.opt

?????文件??????36358??2014-09-07?10:29??gerbv_vc6.plg

?????文件??????14931??2014-09-07?10:29??Debug\dynload.obj

?????文件????1022462??2014-09-07?10:30??Debug\dynload.sbr

?????文件??????10380??2014-09-07?10:30??Debug\gerbv.res

?????文件???????8414??2014-09-07?10:30??Debug\getopt.obj

?????文件??????10507??2014-09-07?10:30??Debug\getopt.sbr

?????文件??????91682??2014-09-07?10:30??Debug\libasprintf-0.dll

?????文件?????215280??2014-09-07?10:30??Debug\libatk-1.0-0.dll

?????文件?????972041??2014-09-07?10:30??Debug\libcairo-2.dll

?????文件??????73310??2014-09-07?10:30??Debug\libcairo-gobject-2.dll

?????文件?????208739??2014-09-07?10:30??Debug\libcairo-script-interpreter-2.dll

?????文件??????52957??2014-09-07?10:30??Debug\libcharset-1.dll

?????文件?????338000??2014-09-07?10:30??Debug\libcroco-0.6-3.dll

?????文件??????83622??2014-09-07?10:30??Debug\libffi-6.dll

?????文件?????347810??2014-09-07?10:30??Debug\libfontconfig-1.dll

?????文件?????752539??2014-09-07?10:30??Debug\libfreetype-6.dll

?????文件??????93389??2014-09-07?10:30??Debug\libgailutil-3-0.dll

?????文件?????870852??2014-09-07?10:30??Debug\libgdk-3-0.dll

?????文件?????356005??2014-09-07?10:30??Debug\libgdk_pixbuf-2.0-0.dll

?????文件????1401627??2014-09-07?10:32??Debug\libgettextlib-0-18-2.dll

?????文件?????398632??2014-09-07?10:30??Debug\libgettextpo-0.dll

?????文件?????320913??2014-09-07?10:30??Debug\libgettextsrc-0-18-2.dll

?????文件????1789609??2014-09-07?10:32??Debug\libgio-2.0-0.dll

?????文件????1513572??2014-09-07?10:32??Debug\libglib-2.0-0.dll

?????文件??????64399??2014-09-07?10:30??Debug\libgmodule-2.0-0.dll

?????文件?????403969??2014-09-07?10:30??Debug\libgobject-2.0-0.dll

............此處省略107個文件信息