kolan
/
CMake
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ENH: fix documentation and add docs on parenthetical expressions

This commit is contained in:
Ken Martin 2009-02-12 12:50:12 -05:00
parent 3d0e241498
commit 4f369610f5
1 changed files with 12 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
Source/cmIfCommand.h
View File

@ -118,9 +118,10 @@ public:
"in the THEN section are invoked. Otherwise, the commands in the "
"else section are invoked. The elseif and else sections are "
"optional. You may have multiple elseif clauses. Note that "
"the same expression must be given to if, and endif. Long "
"expressions can be used and the order or precedence is that the "
"EXISTS, COMMAND, and DEFINED operators will be evaluated first. "
"the expression in the else and endif clause is optional. Long "
"expressions can be used and there is a traditional order of precedence. "
"Parenthetical expressions are evaluated first followed by unary operators "
"such as EXISTS, COMMAND, and DEFINED. "
"Then any EQUAL, LESS, GREATER, STRLESS, STRGREATER, STREQUAL, MATCHES "
"will be evaluated. Then NOT operators and finally AND, OR operators "
"will be evaluated. Possible expressions are:\n"
@ -154,7 +155,7 @@ public:
"True if the given name is a directory. "
"Behavior is well-defined only for full paths.\n"
" if(IS_ABSOLUTE path)\n"
"True if the given path is an absolute path.\n "
"True if the given path is an absolute path.\n"
" if(variable MATCHES regex)\n"
" if(string MATCHES regex)\n"
"True if the given string or variable's value matches the given "
@ -182,7 +183,13 @@ public:
"major[.minor[.patch[.tweak]]]).\n"
" if(DEFINED variable)\n"
"True if the given variable is defined. It does not matter if the "
"variable is true or false just if it has been set.";
"variable is true or false just if it has been set.\n"
" if((expression) AND (expression OR (expression)))\n"
"The expressions inside the parenthesis are evaluated first and then the remaining "
"expression is evaluated as in the previous examples. Where there are nested "
"parenthesis the innermost are evaluated as part of evaluating the expression "
"that contains them."
;
}
// this is a shared function for both If and Else to determine if the