%token _LANGLE %token _LANGLE_EQUALS %token _EQUALS %token _RANGLE %token _RANGLE_EQUALS %token _BAR %token _BARBAR %token _SEMIC %token _COLON %token _BANG %token _BANG_EQUALS %token _QUESTION_EQUALS %token _LPAREN %token _RPAREN %token _LBRACKET %token _RBRACKET %token _LBRACE %token _RBRACE %token _AMPER %token _AMPERAMPER %token _PLUS_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 RETURN %token RULE %token SWITCH %token TOGETHER %token UPDATED %token WHILE /* * Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc. * * 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. * * 09/11/00 (seiwald) - Support for function calls: * * Rules now return lists (LIST *), rather than void. * * New "[ rule ]" syntax evals rule into a LIST. * * Lists are now generated by compile_list() and * compile_append(), and any other rule that indirectly * makes a list, rather than being built directly here, * so that lists values can contain rule evaluations. * * New 'return' rule sets the return value, though * other statements also may have return values. * * 'run' production split from 'block' production so * that empty blocks can be handled separately. */ %token ARG STRING %left _BARBAR _BAR %left _AMPERAMPER _AMPER %left _EQUALS _BANG_EQUALS IN %left _LANGLE _LANGLE_EQUALS _RANGLE _RANGLE_EQUALS %left _BANG %{ #include "jam.h" #include "lists.h" #include "parse.h" #include "scan.h" #include "compile.h" #include "newstr.h" # define F0 (LIST *(*)(PARSE *, LOL *))0 # define P0 (PARSE *)0 # define S0 (char *)0 # define pappend( l,r ) parse_make( compile_append,l,r,P0,S0,S0,0 ) # define peval( c,l,r ) parse_make( compile_eval,l,r,P0,S0,S0,c ) # define pfor( s,l,r ) parse_make( compile_foreach,l,r,P0,s,S0,0 ) # define pif( l,r,t ) parse_make( compile_if,l,r,t,S0,S0,0 ) # define pincl( l ) parse_make( compile_include,l,P0,P0,S0,S0,0 ) # define plist( s ) parse_make( compile_list,P0,P0,P0,s,S0,0 ) # define plocal( l,r,t ) parse_make( compile_local,l,r,t,S0,S0,0 ) # define pnull() parse_make( compile_null,P0,P0,P0,S0,S0,0 ) # define pon( l,r ) parse_make( compile_on,l,r,P0,S0,S0,0 ) # define prule( s,p ) parse_make( compile_rule,p,P0,P0,s,S0,0 ) # define prules( l,r ) parse_make( compile_rules,l,r,P0,S0,S0,0 ) # define pset( l,r,a ) parse_make( compile_set,l,r,P0,S0,S0,a ) # define pset1( l,r,t,a ) parse_make( compile_settings,l,r,t,S0,S0,a ) # define psetc( s,p ) parse_make( compile_setcomp,p,P0,P0,s,S0,0 ) # define psete( s,l,s1,f ) parse_make( compile_setexec,l,P0,P0,s,s1,f ) # define pswitch( l,r ) parse_make( compile_switch,l,r,P0,S0,S0,0 ) # define pwhile( l,r ) parse_make( compile_while,l,r,P0,S0,S0,0 ) # define pnode( l,r ) parse_make( F0,l,r,P0,S0,S0,0 ) # define psnode( s,l ) parse_make( F0,l,P0,P0,s,S0,0 ) %} %% run : /* empty */ /* do nothing */ | rules { parse_save( $1.parse ); } ; /* * block - zero or more rules * rules - one or more rules * rule - any one of jam's rules * right-recursive so rules execute in order. */ block : /* empty */ { $$.parse = pnull(); } | rules { $$.parse = $1.parse; } ; rules : rule { $$.parse = $1.parse; } | rule rules { $$.parse = prules( $1.parse, $2.parse ); } | LOCAL list _SEMIC block { $$.parse = plocal( $2.parse, pnull(), $4.parse ); } | LOCAL list _EQUALS list _SEMIC block { $$.parse = plocal( $2.parse, $4.parse, $6.parse ); } ; rule : _LBRACE block _RBRACE { $$.parse = $2.parse; } | INCLUDE list _SEMIC { $$.parse = pincl( $2.parse ); } | ARG lol _SEMIC { $$.parse = prule( $1.string, $2.parse ); } | arg assign list _SEMIC { $$.parse = pset( $1.parse, $3.parse, $2.number ); } | arg ON list assign list _SEMIC { $$.parse = pset1( $1.parse, $3.parse, $5.parse, $4.number ); } | RETURN list _SEMIC { $$.parse = $2.parse; } | FOR ARG IN list _LBRACE block _RBRACE { $$.parse = pfor( $2.string, $4.parse, $6.parse ); } | SWITCH list _LBRACE cases _RBRACE { $$.parse = pswitch( $2.parse, $4.parse ); } | IF expr _LBRACE block _RBRACE { $$.parse = pif( $2.parse, $4.parse, pnull() ); } | IF expr _LBRACE block _RBRACE ELSE rule { $$.parse = pif( $2.parse, $4.parse, $7.parse ); } | WHILE expr _LBRACE block _RBRACE { $$.parse = pwhile( $2.parse, $4.parse ); } | RULE ARG rule { $$.parse = psetc( $2.string, $3.parse ); } | ON arg rule { $$.parse = pon( $2.parse, $3.parse ); } | ACTIONS eflags ARG bindlist _LBRACE { yymode( SCAN_STRING ); } STRING { yymode( SCAN_NORMAL ); } _RBRACE { $$.parse = psete( $3.string,$4.parse,$7.string,$2.number ); } ; /* * assign - = or += */ assign : _EQUALS { $$.number = ASSIGN_SET; } | _PLUS_EQUALS { $$.number = ASSIGN_APPEND; } | _QUESTION_EQUALS { $$.number = ASSIGN_DEFAULT; } | DEFAULT _EQUALS { $$.number = ASSIGN_DEFAULT; } ; /* * expr - an expression for if */ expr : arg { $$.parse = peval( EXPR_EXISTS, $1.parse, pnull() ); } | expr _EQUALS expr { $$.parse = peval( EXPR_EQUALS, $1.parse, $3.parse ); } | expr _BANG_EQUALS expr { $$.parse = peval( EXPR_NOTEQ, $1.parse, $3.parse ); } | expr _LANGLE expr { $$.parse = peval( EXPR_LESS, $1.parse, $3.parse ); } | expr _LANGLE_EQUALS expr { $$.parse = peval( EXPR_LESSEQ, $1.parse, $3.parse ); } | expr _RANGLE expr { $$.parse = peval( EXPR_MORE, $1.parse, $3.parse ); } | expr _RANGLE_EQUALS expr { $$.parse = peval( EXPR_MOREEQ, $1.parse, $3.parse ); } | expr _AMPER expr { $$.parse = peval( EXPR_AND, $1.parse, $3.parse ); } | expr _AMPERAMPER expr { $$.parse = peval( EXPR_AND, $1.parse, $3.parse ); } | expr _BAR expr { $$.parse = peval( EXPR_OR, $1.parse, $3.parse ); } | expr _BARBAR expr { $$.parse = peval( EXPR_OR, $1.parse, $3.parse ); } | expr IN list { $$.parse = peval( EXPR_IN, $1.parse, $3.parse ); } | _BANG expr { $$.parse = peval( EXPR_NOT, $2.parse, pnull() ); } | _LPAREN expr _RPAREN { $$.parse = $2.parse; } ; /* * cases - action elements inside a 'switch' * case - a single action element inside a 'switch' * right-recursive rule so cases can be examined in order. */ cases : /* empty */ { $$.parse = P0; } | case cases { $$.parse = pnode( $1.parse, $2.parse ); } ; case : CASE ARG _COLON block { $$.parse = psnode( $2.string, $4.parse ); } ; /* * lol - list of lists * right-recursive rule so that lists can be added in order. */ lol : list { $$.parse = pnode( P0, $1.parse ); } | list _COLON lol { $$.parse = pnode( $3.parse, $1.parse ); } ; /* * list - zero or more args in a LIST * listp - list (in puncutation only mode) * arg - one ARG or function call */ list : listp { $$.parse = $1.parse; yymode( SCAN_NORMAL ); } ; listp : /* empty */ { $$.parse = pnull(); yymode( SCAN_PUNCT ); } | listp arg { $$.parse = pappend( $1.parse, $2.parse ); } ; arg : ARG { $$.parse = plist( $1.string ); } | _LBRACKET { yymode( SCAN_NORMAL ); } func _RBRACKET { $$.parse = $3.parse; } ; /* * func - a function call (inside []) * This needs to be split cleanly out of 'rule' */ func : ARG lol { $$.parse = prule( $1.string, $2.parse ); } | ON arg ARG lol { $$.parse = pon( $2.parse, prule( $3.string, $4.parse ) ); } | ON arg RETURN list { $$.parse = pon( $2.parse, $4.parse ); } ; /* * eflags - zero or more modifiers to 'executes' * eflag - a single modifier to 'executes' */ eflags : /* empty */ { $$.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 { $$.number = EXEC_EXISTING; } ; /* * bindlist - list of variable to bind for an action */ bindlist : /* empty */ { $$.parse = pnull(); } | BIND list { $$.parse = $2.parse; } ;
# | 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 |