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| author | Tavian Barnes <tavianator@gmail.com> | 2010-03-22 13:19:45 -0400 |
|---|---|---|
| committer | Tavian Barnes <tavianator@gmail.com> | 2010-03-22 13:19:45 -0400 |
| commit | bb71a70253ae5bf91e99dcd2809471abebea1b69 (patch) | |
| tree | 26c145bbdcb6ba71b2f272641439692c30a5254b /dimension | |
| parent | ac3e97014885af00b5a2eb01df232221482db023 (diff) | |
| download | dimension-bb71a70253ae5bf91e99dcd2809471abebea1b69.tar.xz | |
Support logical ! operator.
Diffstat (limited to 'dimension')
| -rw-r--r-- | dimension/common.terminals | 1 | ||||
| -rw-r--r-- | dimension/directives.rules | 3 | ||||
| -rw-r--r-- | dimension/grammar.epilogue | 1 | ||||
| -rw-r--r-- | dimension/parse.c | 9 | ||||
| -rw-r--r-- | dimension/parse.h | 1 |
5 files changed, 15 insertions, 0 deletions
diff --git a/dimension/common.terminals b/dimension/common.terminals index b5308e4..b72e836 100644 --- a/dimension/common.terminals +++ b/dimension/common.terminals @@ -51,6 +51,7 @@ /* Operators */ %left "|" %left "&" +%left "!" %left "=" "!=" "<" "<=" ">" ">=" %left "+" "-" %left "*" "/" diff --git a/dimension/directives.rules b/dimension/directives.rules index f3f3e7a..a01ab9a 100644 --- a/dimension/directives.rules +++ b/dimension/directives.rules @@ -121,3 +121,6 @@ CONDITIONAL: ARITH_EXPR { | "(" CONDITIONAL ")" { $$ = $2; } + | "!" CONDITIONAL { + $$ = dmnsn_new_astnode1(DMNSN_AST_NOT, @$, $2); + } diff --git a/dimension/grammar.epilogue b/dimension/grammar.epilogue index 6a4a85f..23e8504 100644 --- a/dimension/grammar.epilogue +++ b/dimension/grammar.epilogue @@ -177,6 +177,7 @@ dmnsn_astnode_string(dmnsn_astnode_type astnode_type) dmnsn_astnode_map(DMNSN_AST_GREATER_EQUAL, ">="); dmnsn_astnode_map(DMNSN_AST_AND, "&" ); dmnsn_astnode_map(DMNSN_AST_OR, "|" ); + dmnsn_astnode_map(DMNSN_AST_NOT, "!" ); dmnsn_astnode_map(DMNSN_AST_ABS, "abs" ); dmnsn_astnode_map(DMNSN_AST_ACOS, "acos" ); diff --git a/dimension/parse.c b/dimension/parse.c index 177a96c..6de30c9 100644 --- a/dimension/parse.c +++ b/dimension/parse.c @@ -660,6 +660,10 @@ dmnsn_eval_unary(dmnsn_astnode astnode, dmnsn_symbol_table *symtable) dmnsn_make_ast_integer(&ret, -n); break; + case DMNSN_AST_NOT: + dmnsn_make_ast_integer(&ret, !n); + break; + case DMNSN_AST_ABS: dmnsn_make_ast_integer(&ret, labs(n)); break; @@ -755,6 +759,10 @@ dmnsn_eval_unary(dmnsn_astnode astnode, dmnsn_symbol_table *symtable) dmnsn_make_ast_float(&ret, -n); break; + case DMNSN_AST_NOT: + dmnsn_make_ast_integer(&ret, !n); + break; + case DMNSN_AST_ABS: dmnsn_make_ast_float(&ret, fabs(n)); break; @@ -1389,6 +1397,7 @@ dmnsn_eval(dmnsn_astnode astnode, dmnsn_symbol_table *symtable) case DMNSN_AST_DOT_T: case DMNSN_AST_DOT_TRANSMIT: case DMNSN_AST_NEGATE: + case DMNSN_AST_NOT: case DMNSN_AST_ABS: case DMNSN_AST_ACOS: case DMNSN_AST_ACOSH: diff --git a/dimension/parse.h b/dimension/parse.h index ddd5e7a..2b5ecb7 100644 --- a/dimension/parse.h +++ b/dimension/parse.h @@ -133,6 +133,7 @@ typedef enum { DMNSN_AST_GREATER_EQUAL, DMNSN_AST_AND, DMNSN_AST_OR, + DMNSN_AST_NOT, DMNSN_AST_IDENTIFIER, |