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some more commenting.

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2008-01-18  Thomas Thurman  <tthurman@gnome.org>                                                                                                  
                                                                                                                                                  
        * src/ui/theme.[ch]: some more commenting. 

svn path=/trunk/; revision=3523
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Thomas Thurman 2008-01-18 05:07:53 +00:00 committed by Thomas James Alexander Thurman
parent ca098b2416
commit 7b031a1c28
3 changed files with 47 additions and 5 deletions
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9
ChangeLog
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@ -1,9 +1,14 @@
2008-01-18 Thomas Thurman <tthurman@gnome.org>
* src/ui/theme.[ch]: some more commenting.
2008-01-16 Thomas Thurman <tthurman@gnome.org>
* src/core/bell.c: Correct comment.
* src/core/main.c: Correct comment.
* src/core/theme.c: Much commenting; #ifdeffed-out debug code removed.
* src/core/theme.h: Much commenting.
* src/ui/theme.c: Much commenting; #ifdeffed-out
debug code removed.
* src/ui/theme.h: Much commenting.
2008-01-13 Thomas Thurman <tthurman@gnome.org>

26
src/ui/theme.c
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@ -2211,9 +2211,16 @@ pos_eval_get_variable (PosToken *t,
}
/**
* foo
* Evaluates a sequence of tokens within a particular environment context,
* and returns the current value. May recur if parantheses are found.
*
* \param tokens
* \param tokens A list of tokens to evaluate.
* \param n_tokens How many tokens are in the list.
* \param env The environment context in which to evaluate the expression.
* \param[out] result The current value of the expression
* \bug Yes, we really do reparse the expression every time it's evaluated.
* We should keep the parse tree around all the time and just
* run the new values through it.
* \bug FIXME write this
*/
static gboolean
@ -2377,6 +2384,21 @@ pos_eval_helper (PosToken *tokens,
*
* so very not worth fooling with bison, yet so very painful by hand.
*/
/**
* Evaluates an expression.
*
* \param spec The expression to evaluate.
* \param env The environment context to evaluate the expression in.
* \param[out] val_p The integer value of the expression; if the expression
* is of type float, this will be rounded. If we return
* FALSE because the expression is invalid, this will be
* zero.
* \param[out] err The error, if anything went wrong.
*
* \return True if we evaluated the expression successfully; false otherwise.
*
* \bug Shouldn't spec be const?
*/
static gboolean
pos_eval (MetaDrawSpec *spec,
const MetaPositionExprEnv *env,

17
src/ui/theme.h
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@ -373,14 +373,29 @@ typedef struct
} d;
} PosToken;
/**
*
* Created by meta_draw_spec_new(), destroyed by meta_draw_spec_free().
* pos_eval() fills this with ...FIXME. Are tokens a tree or a list?
* \bug FIXME finish filling this in
* \ingroup tokenizer
*/
typedef struct _MetaDrawSpec
{
/**
* If this spec is constant, this is the value of the constant;
* otherwise it is zero.
*/
int value;
/** A list of tokens in the expression. */
PosToken *tokens;
/** How many tokens are in the tokens list. */
int n_tokens;
gboolean constant : 1; /* Does the expression contain any variables? */
/** Does the expression contain any variables? */
gboolean constant : 1;
} MetaDrawSpec;
struct _MetaDrawOp