Yab.Core.BuildEnv

Package Yab :: Module Core :: Class BuildEnv

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Class BuildEnv

Delegator --+
            |
           BuildEnv

Known Subclasses:: TargetBase, ToolsetBase

This class mantains the environment variables for a specific build step.

Method Summary
	`__init__(self, parent, locate)`
	`__getattr__(self, attr)`
	`__setattr__(self, attr, value)`
	`calc_env(self)`
	`get_env(self)` This function will combine the environment variables with those of its delegate and return a dictionary containing the merged result.
	`get_locate(self)` Locate can not be a build variable because it is needed when the build environment is constructed in order to specify where the targets reside.
	`run_command(self, unparsed_command, in_dir, real_command, globals)` Parse the command, replacing $ expressions, and run it.
	`subst_vars(self, cmd, globals)` Take a command string and replace the $ forms with evaluated pythod results.

Class Variable Summary
`SRE_Pattern`	`escape_re` = `\$\{([^\}]*)\}`
`SRE_Pattern`	`escape_re2` = `\$([_A-Za-z0-9]+)`

Method Details

get_env(self)

This function will combine the environment variables with those of its delegate and return a dictionary containing the merged result.

get_locate(self)

Locate can not be a build variable because it is needed when the build environment is constructed in order to specify where the targets reside.

run_command(self, unparsed_command, in_dir=None, real_command=None, globals=None)

Parse the command, replacing $ expressions, and run it.

It in_dir is specified, switch to that directory first. It real_command is specified, print that to cout as a status message, otherwise print the parsed command. See subst_vars for a description of globals.

subst_vars(self, cmd, globals=None)

Take a command string and replace the $ forms with evaluated pythod results.

$ forms are evaluated as python expressions in which the local variables are the build environment and the globls are passed in as a dictionary. If no globals are specified, use the globals from where the target was constructed.

Class Variable Details

escape_re

Type:: SRE_Pattern
Value:: \$\{([^\}]*)\}

escape_re2

Type:: SRE_Pattern
Value:: \$([_A-Za-z0-9]+)

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