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author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2002-06-06 10:16:02 -0300 |
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committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2002-06-06 10:16:02 -0300 |
commit | 168ea16acb62231d56147b38edeb8c2aca4ed2f8 (patch) | |
tree | 8a0fe3bc2d65643620a29502efb8456a1243c664 /lparser.c | |
parent | dc6e6c48bb7eeac20f79acd9fe4aa4fbb4496303 (diff) | |
download | lua-168ea16acb62231d56147b38edeb8c2aca4ed2f8.tar.gz lua-168ea16acb62231d56147b38edeb8c2aca4ed2f8.tar.bz2 lua-168ea16acb62231d56147b38edeb8c2aca4ed2f8.zip |
details
Diffstat (limited to 'lparser.c')
-rw-r--r-- | lparser.c | 20 |
1 files changed, 10 insertions, 10 deletions
@@ -1,5 +1,5 @@ | |||
1 | /* | 1 | /* |
2 | ** $Id: lparser.c,v 1.184 2002/05/16 18:39:46 roberto Exp roberto $ | 2 | ** $Id: lparser.c,v 1.185 2002/06/03 14:09:57 roberto Exp roberto $ |
3 | ** Lua Parser | 3 | ** Lua Parser |
4 | ** See Copyright Notice in lua.h | 4 | ** See Copyright Notice in lua.h |
5 | */ | 5 | */ |
@@ -83,7 +83,7 @@ static void check (LexState *ls, int c) { | |||
83 | #define check_condition(ls,c,msg) { if (!(c)) luaX_syntaxerror(ls, msg); } | 83 | #define check_condition(ls,c,msg) { if (!(c)) luaX_syntaxerror(ls, msg); } |
84 | 84 | ||
85 | 85 | ||
86 | static int optional (LexState *ls, int c) { | 86 | static int testnext (LexState *ls, int c) { |
87 | if (ls->t.token == c) { | 87 | if (ls->t.token == c) { |
88 | next(ls); | 88 | next(ls); |
89 | return 1; | 89 | return 1; |
@@ -539,7 +539,7 @@ static void constructor (LexState *ls, expdesc *t) { | |||
539 | check(ls, '{'); | 539 | check(ls, '{'); |
540 | for (;;) { | 540 | for (;;) { |
541 | lua_assert(cc.v.k == VVOID || cc.tostore > 0); | 541 | lua_assert(cc.v.k == VVOID || cc.tostore > 0); |
542 | optional(ls, ';'); /* compatibility only */ | 542 | testnext(ls, ';'); /* compatibility only */ |
543 | if (ls->t.token == '}') break; | 543 | if (ls->t.token == '}') break; |
544 | closelistfield(fs, &cc); | 544 | closelistfield(fs, &cc); |
545 | switch(ls->t.token) { | 545 | switch(ls->t.token) { |
@@ -988,7 +988,7 @@ static void fornum (LexState *ls, TString *varname, int line) { | |||
988 | exp1(ls); /* initial value */ | 988 | exp1(ls); /* initial value */ |
989 | check(ls, ','); | 989 | check(ls, ','); |
990 | exp1(ls); /* limit */ | 990 | exp1(ls); /* limit */ |
991 | if (optional(ls, ',')) | 991 | if (testnext(ls, ',')) |
992 | exp1(ls); /* optional step */ | 992 | exp1(ls); /* optional step */ |
993 | else { /* default step = 1 */ | 993 | else { /* default step = 1 */ |
994 | luaK_codeABx(fs, OP_LOADK, fs->freereg, luaK_numberK(fs, 1)); | 994 | luaK_codeABx(fs, OP_LOADK, fs->freereg, luaK_numberK(fs, 1)); |
@@ -1018,7 +1018,7 @@ static void forlist (LexState *ls, TString *indexname) { | |||
1018 | new_localvarstr(ls, "(for generator)", nvars++); | 1018 | new_localvarstr(ls, "(for generator)", nvars++); |
1019 | new_localvarstr(ls, "(for state)", nvars++); | 1019 | new_localvarstr(ls, "(for state)", nvars++); |
1020 | new_localvar(ls, indexname, nvars++); | 1020 | new_localvar(ls, indexname, nvars++); |
1021 | while (optional(ls, ',')) { | 1021 | while (testnext(ls, ',')) { |
1022 | new_localvar(ls, str_checkname(ls), nvars++); | 1022 | new_localvar(ls, str_checkname(ls), nvars++); |
1023 | next(ls); | 1023 | next(ls); |
1024 | } | 1024 | } |
@@ -1096,12 +1096,12 @@ static void localstat (LexState *ls) { | |||
1096 | int nvars = 0; | 1096 | int nvars = 0; |
1097 | int nexps; | 1097 | int nexps; |
1098 | expdesc e; | 1098 | expdesc e; |
1099 | next(ls); /* skip LOCAL */ | ||
1099 | do { | 1100 | do { |
1100 | next(ls); /* skip LOCAL or `,' */ | ||
1101 | new_localvar(ls, str_checkname(ls), nvars++); | 1101 | new_localvar(ls, str_checkname(ls), nvars++); |
1102 | next(ls); /* skip var name */ | 1102 | next(ls); /* skip var name */ |
1103 | } while (ls->t.token == ','); | 1103 | } while (testnext(ls, ',')); |
1104 | if (optional(ls, '=')) | 1104 | if (testnext(ls, '=')) |
1105 | nexps = explist1(ls, &e); | 1105 | nexps = explist1(ls, &e); |
1106 | else { | 1106 | else { |
1107 | e.k = VVOID; | 1107 | e.k = VVOID; |
@@ -1266,7 +1266,7 @@ static void parlist (LexState *ls) { | |||
1266 | default: luaX_syntaxerror(ls, "<name> or `...' expected"); | 1266 | default: luaX_syntaxerror(ls, "<name> or `...' expected"); |
1267 | } | 1267 | } |
1268 | next(ls); | 1268 | next(ls); |
1269 | } while (!dots && optional(ls, ',')); | 1269 | } while (!dots && testnext(ls, ',')); |
1270 | } | 1270 | } |
1271 | code_params(ls, nparams, dots); | 1271 | code_params(ls, nparams, dots); |
1272 | } | 1272 | } |
@@ -1297,7 +1297,7 @@ static void chunk (LexState *ls) { | |||
1297 | int islast = 0; | 1297 | int islast = 0; |
1298 | while (!islast && !block_follow(ls->t.token)) { | 1298 | while (!islast && !block_follow(ls->t.token)) { |
1299 | islast = statement(ls); | 1299 | islast = statement(ls); |
1300 | optional(ls, ';'); | 1300 | testnext(ls, ';'); |
1301 | lua_assert(ls->fs->freereg >= ls->fs->nactvar); | 1301 | lua_assert(ls->fs->freereg >= ls->fs->nactvar); |
1302 | ls->fs->freereg = ls->fs->nactvar; /* free registers */ | 1302 | ls->fs->freereg = ls->fs->nactvar; /* free registers */ |
1303 | } | 1303 | } |