X-Git-Url: https://git.xonotic.org/?p=xonotic%2Fgmqcc.git;a=blobdiff_plain;f=ftepp.c;h=c574f03bb99d518191a243a8155e60f41a9e7c76;hp=36bb1a7b59faeca6390ef3ce31fac56e8de5127f;hb=f1650c42d950400b41be53af2da1ad9867642df4;hpb=87d9371a5c08f5b05ba70b11c63df80960b40831 diff --git a/ftepp.c b/ftepp.c index 36bb1a7..c574f03 100644 --- a/ftepp.c +++ b/ftepp.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2012, 2013 + * Copyright (C) 2012, 2013, 2014 * Wolfgang Bumiller * Dale Weiler * @@ -23,7 +23,6 @@ */ #include #include -#include #include #include "gmqcc.h" @@ -75,17 +74,13 @@ typedef struct ftepp_s { char *itemname; char *includename; bool in_macro; -} ftepp_t; -/* - * Implement the predef subsystem now. We can do this safely with the - * help of lexer contexts. - */ -static uint32_t ftepp_predef_countval = 0; -static uint32_t ftepp_predef_randval = 0; + uint32_t predef_countval; + uint32_t predef_randval; +} ftepp_t; /* __DATE__ */ -static char *ftepp_predef_date(lex_file *context) { +static char *ftepp_predef_date(ftepp_t *context) { const struct tm *itime = NULL; char *value = (char*)mem_a(82); time_t rtime; @@ -100,7 +95,7 @@ static char *ftepp_predef_date(lex_file *context) { } /* __TIME__ */ -static char *ftepp_predef_time(lex_file *context) { +static char *ftepp_predef_time(ftepp_t *context) { const struct tm *itime = NULL; char *value = (char*)mem_a(82); time_t rtime; @@ -115,61 +110,58 @@ static char *ftepp_predef_time(lex_file *context) { } /* __LINE__ */ -static char *ftepp_predef_line(lex_file *context) { - char *value; - util_asprintf(&value, "%d", (int)context->line); +static char *ftepp_predef_line(ftepp_t *context) { + char *value; + + util_asprintf(&value, "%d", (int)context->lex->line); return value; } /* __FILE__ */ -static char *ftepp_predef_file(lex_file *context) { - size_t length = strlen(context->name) + 3; /* two quotes and a terminator */ - char *value = (char*)mem_a(length); - util_snprintf(value, length, "\"%s\"", context->name); +static char *ftepp_predef_file(ftepp_t *context) { + size_t length = strlen(context->lex->name) + 3; /* two quotes and a terminator */ + char *value = (char*)mem_a(length); + util_snprintf(value, length, "\"%s\"", context->lex->name); return value; } /* __COUNTER_LAST__ */ -static char *ftepp_predef_counterlast(lex_file *context) { - char *value; - util_asprintf(&value, "%u", ftepp_predef_countval); - - (void)context; +static char *ftepp_predef_counterlast(ftepp_t *context) { + char *value; + util_asprintf(&value, "%u", context->predef_countval); return value; } /* __COUNTER__ */ -static char *ftepp_predef_counter(lex_file *context) { - char *value; - ftepp_predef_countval ++; - util_asprintf(&value, "%u", ftepp_predef_countval); - (void)context; +static char *ftepp_predef_counter(ftepp_t *context) { + char *value; + + context->predef_countval ++; + util_asprintf(&value, "%u", context->predef_countval); return value; } /* __RANDOM__ */ -static char *ftepp_predef_random(lex_file *context) { - char *value; - ftepp_predef_randval = (util_rand() % 0xFF) + 1; - util_asprintf(&value, "%u", ftepp_predef_randval); +static char *ftepp_predef_random(ftepp_t *context) { + char *value; - (void)context; + context->predef_randval = (util_rand() % 0xFF) + 1; + util_asprintf(&value, "%u", context->predef_randval); return value; } /* __RANDOM_LAST__ */ -static char *ftepp_predef_randomlast(lex_file *context) { - char *value; - util_asprintf(&value, "%u", ftepp_predef_randval); +static char *ftepp_predef_randomlast(ftepp_t *context) { + char *value; - (void)context; + util_asprintf(&value, "%u", context->predef_randval); return value; } /* __TIMESTAMP__ */ -static char *ftepp_predef_timestamp(lex_file *context) { +static char *ftepp_predef_timestamp(ftepp_t *context) { struct stat finfo; const char *find; char *value; size_t size; - if (stat(context->name, &finfo)) + if (stat(context->lex->name, &finfo)) return util_strdup("\"\""); find = util_ctime(&finfo.st_mtime); @@ -184,7 +176,7 @@ static char *ftepp_predef_timestamp(lex_file *context) { typedef struct { const char *name; - char *(*func)(lex_file *); + char *(*func)(ftepp_t *); } ftepp_predef_t; static const ftepp_predef_t ftepp_predefs[] = { @@ -214,7 +206,7 @@ bool ftepp_predef_exists(const char *name) { } /* singleton because we're allowed */ -static GMQCC_INLINE char *(*ftepp_predef(const char *name))(lex_file *context) { +static GMQCC_INLINE char *(*ftepp_predef(const char *name))(ftepp_t *context) { size_t i = ftepp_predef_index(name); return (i != 0) ? ftepp_predefs[i-1].func : NULL; } @@ -306,8 +298,10 @@ static ftepp_t* ftepp_new(void) ftepp = (ftepp_t*)mem_a(sizeof(*ftepp)); memset(ftepp, 0, sizeof(*ftepp)); - ftepp->macros = util_htnew(HT_MACROS); - ftepp->output_on = true; + ftepp->macros = util_htnew(HT_MACROS); + ftepp->output_on = true; + ftepp->predef_countval = 0; + ftepp->predef_randval = 0; return ftepp; } @@ -504,10 +498,29 @@ static bool ftepp_define_body(ftepp_t *ftepp, ppmacro *macro) return true; } +static const char *ftepp_math_constants[][2] = { + { "M_E", "2.7182818284590452354" }, /* e */ + { "M_LOG2E", "1.4426950408889634074" }, /* log_2 e */ + { "M_LOG10E", "0.43429448190325182765" }, /* log_10 e */ + { "M_LN2", "0.69314718055994530942" }, /* log_e 2 */ + { "M_LN10", "2.30258509299404568402" }, /* log_e 10 */ + { "M_PI", "3.14159265358979323846" }, /* pi */ + { "M_PI_2", "1.57079632679489661923" }, /* pi/2 */ + { "M_PI_4", "0.78539816339744830962" }, /* pi/4 */ + { "M_1_PI", "0.31830988618379067154" }, /* 1/pi */ + { "M_2_PI", "0.63661977236758134308" }, /* 2/pi */ + { "M_2_SQRTPI", "1.12837916709551257390" }, /* 2/sqrt(pi) */ + { "M_SQRT2", "1.41421356237309504880" }, /* sqrt(2) */ + { "M_SQRT1_2", "0.70710678118654752440" }, /* 1/sqrt(2) */ + { "M_TAU", "6.28318530717958647692" } /* pi*2 */ +}; + static bool ftepp_define(ftepp_t *ftepp) { ppmacro *macro = NULL; size_t l = ftepp_ctx(ftepp).line; + size_t i; + bool mathconstant = false; (void)ftepp_next(ftepp); if (!ftepp_skipspace(ftepp)) @@ -517,7 +530,25 @@ static bool ftepp_define(ftepp_t *ftepp) case TOKEN_IDENT: case TOKEN_TYPENAME: case TOKEN_KEYWORD: + if (OPTS_FLAG(FTEPP_MATHDEFS)) { + for (i = 0; i < GMQCC_ARRAY_COUNT(ftepp_math_constants); i++) { + if (!strcmp(ftepp_math_constants[i][0], ftepp_tokval(ftepp))) { + mathconstant = true; + break; + } + } + } + macro = ftepp_macro_find(ftepp, ftepp_tokval(ftepp)); + + if (OPTS_FLAG(FTEPP_MATHDEFS)) { + /* user defined ones take precedence */ + if (macro && mathconstant) { + ftepp_macro_delete(ftepp, ftepp_tokval(ftepp)); + macro = NULL; + } + } + if (macro && ftepp->output_on) { if (ftepp_warn(ftepp, WARN_CPP, "redefining `%s`", ftepp_tokval(ftepp))) return false; @@ -732,6 +763,7 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param lex_file *inlex; bool old_inmacro; + bool strip = false; int nextok; @@ -796,6 +828,7 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param if (nextok == '#') { /* raw concatenation */ ++o; + strip = true; break; } if ( (nextok == TOKEN_IDENT || @@ -804,6 +837,7 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param macro_params_find(macro, macro->output[o+1]->value, &pi)) { ++o; + ftepp_stringify(ftepp, ¶ms[pi]); break; } @@ -814,7 +848,14 @@ static bool ftepp_macro_expand(ftepp_t *ftepp, ppmacro *macro, macroparam *param ftepp_out(ftepp, "\n", false); break; default: - ftepp_out(ftepp, out->value, false); + buffer = out->value; + if (vec_size(macro->output) > o + 1 && macro->output[o+1]->token == '#') + buffer++; + if (strip) { + while (util_isspace(*buffer)) buffer++; + strip = false; + } + ftepp_out(ftepp, buffer, false); break; } } @@ -1687,9 +1728,9 @@ static bool ftepp_preprocess(ftepp_t *ftepp) case TOKEN_TYPENAME: /* is it a predef? */ if (OPTS_FLAG(FTEPP_PREDEFS)) { - char *(*predef)(lex_file*) = ftepp_predef(ftepp_tokval(ftepp)); + char *(*predef)(ftepp_t*) = ftepp_predef(ftepp_tokval(ftepp)); if (predef) { - expand = predef(ftepp->lex); + expand = predef(ftepp); ftepp_out (ftepp, expand, false); ftepp_next(ftepp); @@ -1822,6 +1863,7 @@ ftepp_t *ftepp_create() ftepp_t *ftepp; char minor[32]; char major[32]; + size_t i; ftepp = ftepp_new(); if (!ftepp) @@ -1871,6 +1913,13 @@ ftepp_t *ftepp_create() */ ftepp_add_macro(ftepp, "__NULL__", "nil"); + /* add all the math constants if they can be */ + if (OPTS_FLAG(FTEPP_MATHDEFS)) { + for (i = 0; i < GMQCC_ARRAY_COUNT(ftepp_math_constants); i++) + if (!ftepp_macro_find(ftepp, ftepp_math_constants[i][0])) + ftepp_add_macro(ftepp, ftepp_math_constants[i][0], ftepp_math_constants[i][1]); + } + return ftepp; }