Robert Wilhelm : vbscript: Parse decimal literals between -1 and 1 without 0 in front.
Alexandre Julliard
julliard at winehq.org
Tue Sep 15 15:40:11 CDT 2020
Module: wine
Branch: master
Commit: a31023a67812714f503250dc25abbc086439790a
URL: https://source.winehq.org/git/wine.git/?a=commit;h=a31023a67812714f503250dc25abbc086439790a
Author: Robert Wilhelm <robert.wilhelm at gmx.net>
Date: Tue Sep 15 13:33:38 2020 +0200
vbscript: Parse decimal literals between -1 and 1 without 0 in front.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=49820
Signed-off-by: Robert Wilhelm <robert.wilhelm at gmx.net>
Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/vbscript/lex.c | 11 +++++++++--
dlls/vbscript/tests/lang.vbs | 3 +++
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/dlls/vbscript/lex.c b/dlls/vbscript/lex.c
index 5b93739d02..251374d90e 100644
--- a/dlls/vbscript/lex.c
+++ b/dlls/vbscript/lex.c
@@ -393,11 +393,18 @@ static int parse_next_token(void *lval, unsigned *loc, parser_ctx_t *ctx)
/*
* We need to distinguish between '.' used as part of a member expression and
* a beginning of a dot expression (a member expression accessing with statement
- * expression).
+ * expression) and a floating point number like ".2" .
*/
c = ctx->ptr > ctx->code ? ctx->ptr[-1] : '\n';
+ if (is_identifier_char(c) || c == ')') {
+ ctx->ptr++;
+ return '.';
+ }
+ c = ctx->ptr[1];
+ if('0' <= c && c <= '9')
+ return parse_numeric_literal(ctx, lval);
ctx->ptr++;
- return is_identifier_char(c) || c == ')' ? '.' : tDOT;
+ return tDOT;
case '-':
if(ctx->is_html && ctx->ptr[1] == '-' && ctx->ptr[2] == '>')
return comment_line(ctx);
diff --git a/dlls/vbscript/tests/lang.vbs b/dlls/vbscript/tests/lang.vbs
index 0d752121b2..621b390523 100644
--- a/dlls/vbscript/tests/lang.vbs
+++ b/dlls/vbscript/tests/lang.vbs
@@ -47,6 +47,8 @@ Call ok(56.789e-2 = 0.56789, "56.789e-2 <> 0.56789")
Call ok(1e-94938484 = 0, "1e-... <> 0")
Call ok(34e0 = 34, "34e0 <> 34")
Call ok(34E1 = 340, "34E0 <> 340")
+Call ok(.5 = 0.5, ".5 <> 0.5")
+Call ok(.5e1 = 5, ".5e1 <> 5")
Call ok(--1 = 1, "--1 = " & --1)
Call ok(-empty = 0, "-empty = " & (-empty))
Call ok(true = -1, "! true = -1")
@@ -86,6 +88,7 @@ Call ok(getVT(null) = "VT_NULL", "getVT(null) is not VT_NULL")
Call ok(getVT(0) = "VT_I2", "getVT(0) is not VT_I2")
Call ok(getVT(1) = "VT_I2", "getVT(1) is not VT_I2")
Call ok(getVT(0.5) = "VT_R8", "getVT(0.5) is not VT_R8")
+Call ok(getVT(.5) = "VT_R8", "getVT(.5) is not VT_R8")
Call ok(getVT(0.0) = "VT_R8", "getVT(0.0) is not VT_R8")
Call ok(getVT(2147483647) = "VT_I4", "getVT(2147483647) is not VT_I4")
Call ok(getVT(2147483648) = "VT_R8", "getVT(2147483648) is not VT_R8")
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