Visible to Intel only — GUID: reference_TCL_tcl_pkg_sta_ver_1_0_cmd_use_timing_analyzer_style_escaping
Ixiasoft
Visible to Intel only — GUID: reference_TCL_tcl_pkg_sta_ver_1_0_cmd_use_timing_analyzer_style_escaping
Ixiasoft
3.1.29.81. use_timing_analyzer_style_escaping (::quartus::sta)
The following table displays information for the use_timing_analyzer_style_escaping Tcl command:
Tcl Package and Version | Belongs to ::quartus::sta |
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Syntax | use_timing_analyzer_style_escaping [-h | -help] [-long_help] [-off] [-on] | ||
Arguments | -h | -help | Short help | |
-long_help | Long help with examples and possible return values | ||
-off | Disable this setting. | ||
-on | Enable this setting. | ||
Description | Use Timing Analyzer-style escaping. (Timing Analyzer-style escaping is enabled by default. The values used to create a collection, whether explicitly using a collection command or implicitly as a value specified as a "-from", "-to", or similar option to various SDC and report commands, are a Tcl list of wildcards. This includes a single name with an exact match. The value must follow standard Tcl substitution rules for Tcl lists and "string match" as described below, unless using Timing Analyzer-style escaping (default). For special characters such as '$', the character must be escaped using a single '\' character to prevent Tcl from interpreting the word after '$' as a Tcl variable, such as: Clk\$Signal. A '\' character itself must be escaped with another '\' as in the '$' case, must be escaped again for the Tcl list, and must be escaped yet again for Tcl "string match." The final result is eight '\' characters, such as: Clk\\\\\\\\Signal. Using Tcl "list" eliminates one level of escaping, since it will escape any '\' characters automatically for the Tcl list, such as: [list Clk\\\\Signal] Using '{' and '}' characters also eliminates the need for one or two levels of escaping, since '{' and '}' prevent string substitution in the contents, such as: [List {Clk\\Signal}] {{Clk\\Signal}} The use_timing_analyzer_style_escaping option, which is on by default, allows the user to specify a name containing '\' characters with only two '\' characters in all cases, such as: Clk\\Signal. The extra '\' characters required for Tcl list string substitution and "string match" are added automatically by the Timing Analyzer. To disable Timing Analyzer style string escaping, call "use_timing_analyzer_style_escaping -off" before adding any timing constraints or exceptions. |
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Example Usage | |
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Return Value | Code Name | Code | String Return |