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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 1 @@ | ||
| command |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 1 @@ | ||
| cmd.exe |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 1,5 @@ | ||
| APP = calc | ||
| STACK = 4k | ||
| MALLOC = 0k | ||
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| include ../app_make.txt |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 1,163 @@ | ||
| #include "apilib.h" | ||
| #include <stdio.h> /* sprintf */ | ||
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| #define INVALID -0x7fffffff | ||
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| int strtol(char *s, char **endp, int base); /* 标准函数 <stdlib.h> */ | ||
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| char *skipspace(char *p); | ||
| int getnum(char **pp, int priority); | ||
|
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| void HariMain(void) | ||
| { | ||
| int i; | ||
| char s[30], *p; | ||
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| api_cmdline(s, 30); | ||
| for (p = s; *p > ' '; p ) { } /* 一直读到空格为止 */ | ||
| i = getnum(&p, 9); | ||
| if (i == INVALID) { | ||
| api_putstr0("error!\n"); | ||
| } else { | ||
| sprintf(s, "= %d = 0x%x\n", i, i); | ||
| api_putstr0(s); | ||
| } | ||
| api_end(); | ||
| } | ||
|
|
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| char *skipspace(char *p) | ||
| { | ||
| for (; *p == ' '; p ) { } /* 将空格跳过去 */ | ||
| return p; | ||
| } | ||
|
|
||
| int getnum(char **pp, int priority) | ||
| { | ||
| char *p = *pp; | ||
| int i = INVALID, j; | ||
| p = skipspace(p); | ||
|
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||
| /*单项运算符*/ | ||
| if (*p == ' ') { | ||
| p = skipspace(p 1); | ||
| i = getnum(&p, 0); | ||
| } else if (*p == '-') { | ||
| p = skipspace(p 1); | ||
| i = getnum(&p, 0); | ||
| if (i != INVALID) { | ||
| i = - i; | ||
| } | ||
| } else if (*p == '~') { | ||
| p = skipspace(p 1); | ||
| i = getnum(&p, 0); | ||
| if (i != INVALID) { | ||
| i = ~i; | ||
| } | ||
| } else if (*p == '(') { /*括号*/ | ||
| p = skipspace(p 1); | ||
| i = getnum(&p, 9); | ||
| if (*p == ')') { | ||
| p = skipspace(p 1); | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if ('0' <= *p && *p <= '9') { /*数值*/ | ||
| i = strtol(p, &p, 0); | ||
| } else { /*错误 */ | ||
| i = INVALID; | ||
| } | ||
|
|
||
| /*二项运算符*/ | ||
| for (;;) { | ||
| if (i == INVALID) { | ||
| break; | ||
| } | ||
| p = skipspace(p); | ||
| if (*p == ' ' && priority > 2) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 2); | ||
| if (j != INVALID) { | ||
| i = j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '-' && priority > 2) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 2); | ||
| if (j != INVALID) { | ||
| i -= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '*' && priority > 1) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 1); | ||
| if (j != INVALID) { | ||
| i *= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '/' && priority > 1) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 1); | ||
| if (j != INVALID && j != 0) { | ||
| i /= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '%' && priority > 1) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 1); | ||
| if (j != INVALID && j != 0) { | ||
| i %= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '<' && p[1] == '<' && priority > 3) { | ||
| p = skipspace(p 2); | ||
| j = getnum(&p, 3); | ||
| if (j != INVALID && j != 0) { | ||
| i <<= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '>' && p[1] == '>' && priority > 3) { | ||
| p = skipspace(p 2); | ||
| j = getnum(&p, 3); | ||
| if (j != INVALID && j != 0) { | ||
| i >>= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '&' && priority > 4) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 4); | ||
| if (j != INVALID) { | ||
| i &= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '^' && priority > 5) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 5); | ||
| if (j != INVALID) { | ||
| i ^= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else if (*p == '|' && priority > 6) { | ||
| p = skipspace(p 1); | ||
| j = getnum(&p, 6); | ||
| if (j != INVALID) { | ||
| i |= j; | ||
| } else { | ||
| i = INVALID; | ||
| } | ||
| } else { | ||
| break; | ||
| } | ||
| } | ||
| p = skipspace(p); | ||
| *pp = p; | ||
| return i; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 1 @@ | ||
| ..\..\z_tools\make.exe %1 %2 %3 %4 %5 %6 %7 %8 %9 |