%token _BANG %token _BANG_EQUALS %token _AMPERAMPER %token _LPAREN %token _RPAREN %token _PLUS_EQUALS %token _COLON %token _SEMIC %token _LANGLE %token _LANGLE_EQUALS %token _EQUALS %token _RANGLE %token _RANGLE_EQUALS %token _QUESTION_EQUALS %token ACTIONS %token BIND %token CASE %token DEFAULT %token ELSE %token EXISTING %token FOR %token IF %token IGNORE %token IN %token INCLUDE %token LOCAL %token ON %token PIECEMEAL %token QUIETLY %token RULE %token SWITCH %token TOGETHER %token UPDATED %token _LBRACE %token _BARBAR %token _RBRACE /* * Copyright 1993, 1995 Christopher Seiwald. * * This file is part of Jam - see jam.c for Copyright information. */ /* * jamgram.yy - jam grammar * * 04/13/94 (seiwald) - added shorthand L0 for null list pointer * 06/01/94 (seiwald) - new 'actions existing' does existing sources * 08/23/94 (seiwald) - Support for '+=' (append to variable) * 08/31/94 (seiwald) - Allow ?= as alias for "default =". * 09/15/94 (seiwald) - if conditionals take only single arguments, so * that 'if foo == bar' gives syntax error (use =). * 02/11/95 (seiwald) - when scanning arguments to rules, only treat * punctuation keywords as keywords. All arg lists * are terminated with punctuation keywords. */ %token ARG STRING %left _BARBAR %left _AMPERAMPER %left _BANG %{ #include "jam.h" #include "lists.h" #include "parse.h" #include "scan.h" #include "compile.h" #include "newstr.h" # define F0 (void (*)())0 # define P0 (PARSE *)0 # define S0 (char *)0 # define pset( l,r,a ) parse_make( compile_set,P0,P0,S0,S0,l,r,a ) # define pset1( l,p,a ) parse_make( compile_settings,p,P0,S0,S0,l,L0,a ) # define pstng( p,l,r,a ) pset1( p, parse_make( F0,P0,P0,S0,S0,l,r,0 ), a ) # define prule( s,p ) parse_make( compile_rule,p,P0,s,S0,L0,L0,0 ) # define prules( l,r ) parse_make( compile_rules,l,r,S0,S0,L0,L0,0 ) # define pfor( s,p,l ) parse_make( compile_foreach,p,P0,s,S0,l,L0,0 ) # define psetc( s,p ) parse_make( compile_setcomp,p,P0,s,S0,L0,L0,0 ) # define psete( s,l,s1,f ) parse_make( compile_setexec,P0,P0,s,s1,l,L0,f ) # define pincl( l ) parse_make( compile_include,P0,P0,S0,S0,l,L0,0 ) # define pswitch( l,p ) parse_make( compile_switch,p,P0,S0,S0,l,L0,0 ) # define plocal( l,r,p ) parse_make( compile_local,p,P0,S0,S0,l,r,0 ) # define pnull() parse_make( compile_null,P0,P0,S0,S0,L0,L0,0 ) # define pcases( l,r ) parse_make( F0,l,r,S0,S0,L0,L0,0 ) # define pcase( s,p ) parse_make( F0,p,P0,s,S0,L0,L0,0 ) # define pif( l,r ) parse_make( compile_if,l,r,S0,S0,L0,L0,0 ) # define pthen( l,r ) parse_make( F0,l,r,S0,S0,L0,L0,0 ) # define pcond( c,l,r ) parse_make( F0,l,r,S0,S0,L0,L0,c ) # define pcomp( c,l,r ) parse_make( F0,P0,P0,S0,S0,l,r,c ) # define plol( p,l ) parse_make( F0,p,P0,S0,S0,l,L0,0 ) %} %% run : block { if( $1.parse->func == compile_null ) { parse_free( $1.parse ); } else { parse_save( $1.parse ); } } ; /* * block - one or more rules * rule - any one of jam's rules */ block : /* empty */ { $$.parse = pnull(); } | rule block { $$.parse = prules( $1.parse, $2.parse ); } | LOCAL args _SEMIC block { $$.parse = plocal( $2.list, L0, $4.parse ); } | LOCAL args _EQUALS args _SEMIC block { $$.parse = plocal( $2.list, $4.list, $6.parse ); } ; rule : _LBRACE block _RBRACE { $$.parse = $2.parse; } | INCLUDE args _SEMIC { $$.parse = pincl( $2.list ); } | ARG lol _SEMIC { $$.parse = prule( $1.string, $2.parse ); } | arg1 assign args _SEMIC { $$.parse = pset( $1.list, $3.list, $2.number ); } | arg1 ON args assign args _SEMIC { $$.parse = pstng( $3.list, $1.list, $5.list, $4.number ); } | arg1 DEFAULT _EQUALS args _SEMIC { $$.parse = pset( $1.list, $4.list, ASSIGN_DEFAULT ); } | FOR ARG IN args _LBRACE block _RBRACE { $$.parse = pfor( $2.string, $6.parse, $4.list ); } | SWITCH args _LBRACE cases _RBRACE { $$.parse = pswitch( $2.list, $4.parse ); } | IF cond _LBRACE block _RBRACE { $$.parse = pif( $2.parse, pthen( $4.parse, pnull() ) ); } | IF cond _LBRACE block _RBRACE ELSE rule { $$.parse = pif( $2.parse, pthen( $4.parse, $7.parse ) ); } | RULE ARG rule { $$.parse = psetc( $2.string, $3.parse ); } | ACTIONS eflags ARG bindlist _LBRACE { yymode( SCAN_STRING ); } STRING { yymode( SCAN_NORMAL ); } _RBRACE { $$.parse = psete( $3.string,$4.list,$7.string,$2.number ); } ; /* * assign - = or += */ assign : _EQUALS { $$.number = ASSIGN_SET; } | _PLUS_EQUALS { $$.number = ASSIGN_APPEND; } | _QUESTION_EQUALS { $$.number = ASSIGN_DEFAULT; } ; /* * cond - a conditional for 'if' */ cond : arg1 { $$.parse = pcomp( COND_EXISTS, $1.list, L0 ); } | arg1 _EQUALS arg1 { $$.parse = pcomp( COND_EQUALS, $1.list, $3.list ); } | arg1 _BANG_EQUALS arg1 { $$.parse = pcomp( COND_NOTEQ, $1.list, $3.list ); } | arg1 _LANGLE arg1 { $$.parse = pcomp( COND_LESS, $1.list, $3.list ); } | arg1 _LANGLE_EQUALS arg1 { $$.parse = pcomp( COND_LESSEQ, $1.list, $3.list ); } | arg1 _RANGLE arg1 { $$.parse = pcomp( COND_MORE, $1.list, $3.list ); } | arg1 _RANGLE_EQUALS arg1 { $$.parse = pcomp( COND_MOREEQ, $1.list, $3.list ); } | arg1 IN args { $$.parse = pcomp( COND_IN, $1.list, $3.list ); } | _BANG cond { $$.parse = pcond( COND_NOT, $2.parse, P0 ); } | cond _AMPERAMPER cond { $$.parse = pcond( COND_AND, $1.parse, $3.parse ); } | cond _BARBAR cond { $$.parse = pcond( COND_OR, $1.parse, $3.parse ); } | _LPAREN cond _RPAREN { $$.parse = $2.parse; } ; /* * cases - action elements inside a 'switch' * case - a single action element inside a 'switch' * * Unfortunately, a right-recursive rule. */ cases : /* empty */ { $$.parse = P0; } | case cases { $$.parse = pcases( $1.parse, $2.parse ); } ; case : CASE ARG _COLON block { $$.parse = pcase( $2.string, $4.parse ); } ; /* * lol - list of lists */ lol : args { $$.parse = plol( P0, $1.list ); } | args _COLON lol { $$.parse = plol( $3.parse, $1.list ); } ; /* * args - zero or more ARGs in a LIST * arg1 - exactly one ARG in a LIST */ args : argsany { yymode( SCAN_NORMAL ); } ; argsany : /* empty */ { $$.list = L0; yymode( SCAN_PUNCT ); } | argsany ARG { $$.list = list_new( $1.list, copystr( $2.string ) ); } ; arg1 : ARG { $$.list = list_new( L0, copystr( $1.string ) ); } ; /* * eflags - zero or more modifiers to 'executes' * eflag - a single modifier to 'executes' */ eflags : /* empty */ { $$.number = 0; } | eflags eflag { $$.number = $1.number | $2.number; } ; eflag : UPDATED { $$.number = EXEC_UPDATED; } | TOGETHER { $$.number = EXEC_TOGETHER; } | IGNORE { $$.number = EXEC_IGNORE; } | QUIETLY { $$.number = EXEC_QUIETLY; } | PIECEMEAL { $$.number = EXEC_PIECEMEAL; } | EXISTING { $$.number = EXEC_EXISTING; } ; /* * bindlist - list of variable to bind for an action */ bindlist : /* empty */ { $$.list = L0; } | BIND args { $$.list = $2.list; } ;
# | Change | User | Description | Committed | |
---|---|---|---|---|---|
#9 | 3181 | Craig Mcpheeters | Integration of the Jam mainline into my branch | ||
#8 | 1604 | Craig Mcpheeters | Integration of rc1 from the mainline | ||
#7 | 1568 | Craig Mcpheeters | An integration from the mainline, from a little while ago. | ||
#6 | 1482 | Craig Mcpheeters |
Changed the style of the 'expr' rule in jamgram.yy to something similar to that used in 2.3 for the 'cond' rule. The expr rule was failing on expressions of the form: if ! $(var) in $(list) { } which was being expressed as: if ( ! $(var) ) in $(list) { } rather than the old 2.3 behaviour: if ! ( $(var) in $(list) ) { } |
||
#5 | 1468 | Craig Mcpheeters |
Fixed makeString in the Jambase. It was calling FConcat which is no more Fixed the "expr 'in' expr" problem in the mainline, after a suggestion from the jam mailing list. It used to be "expr 'in' list" - it looks like a simple type as that section was redone in the mainline. I've put it back |
||
#4 | 1353 | Craig Mcpheeters | Integration from the mainline. | ||
#3 | 784 | Craig Mcpheeters | Integration from Jam mainline | ||
#2 | 617 | Craig Mcpheeters | Integration from mainline as of @3 | ||
#1 | 616 | Craig Mcpheeters | Integration from Jam mainline, as of @2 |