330 lines
14 KiB
C
330 lines
14 KiB
C
// TABLE.H -- contains tables used by lexer and parser
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//
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// Copyright (c) 1988-1990, Microsoft Corporation. All rights reserved.
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//
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// Purpose:
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// This include file contains parser tables and lexer tables.
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//
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// Revision History:
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// 04-Dec-1989 SB Add proper proto's for PFV fn's which actions[] refers to
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// 08-Oct-1989 SB Modified nameStates[][] to handle OS/2 1.2 quoted names
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// 31-Jul-1989 SB changed entries in nameStates to symbolic BKS (seen Bkslash)
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// 20-May-1989 SB changed nameStates[][] to 16x14 to handle at end of the
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// dependency lines
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// 13-Jun-1988 rj Modified stringStates to handle \nl as in xmake (v1.5)
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// ALL VALUES USED IN THESE TABLES ARE DEFINED IN GRAMMAR.H
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// WHEN PRODUCTIONS CHANGE, UPDATE THE FOLLOWING TABLE
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//
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// The first element in a production line is the number of symbols on
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// the right-hand-side of the production arrow. If the first element
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// is 0, the nonterminal to the left of the arrow goes to the null string.
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// Table entries beginning w/ "DO" are actions to be carried out at
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// that particular point in the production. All other entries are
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// either tokens or non-terminals.
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const UCHAR prod0[] = {0}; // MAKEFILE -> prod0 | prod1 | prod2
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const UCHAR prod1[] = {2,
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BLANKLINES,
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MAKEFILE};
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const UCHAR prod2[] = {5,
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NEWLINE,
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NAME,
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DONAME,
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BODY,
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MAKEFILE};
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const UCHAR prod3[] = {5, // BODY -> prod3 | prod4
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NAMELIST,
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SEPARATOR,
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DOLASTNAME,
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BUILDINFO,
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DOBUILDCMDS};
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const UCHAR prod4[] = {3,
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EQUALS,
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VALUE,
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DOMACRO};
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const UCHAR prod5[] = {0}; // NAMELIST -> prod5 | prod6
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const UCHAR prod6[] = {3,
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NAME,
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DONAMELIST,
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NAMELIST};
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const UCHAR prod7[] = {0}; // COMMANDS -> prod7 | prod8 | prod9
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const UCHAR prod8[] = {1,
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MOREBUILDLINES};
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const UCHAR prod9[] = {4,
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SEMICOLON,
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STRING,
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DONAMELIST,
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MOREBUILDLINES};
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const UCHAR prod10[] = {4, // MOREBUILDLINES -> prod10 | prod 11
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NEWLINESPACE, // | prod12
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STRING,
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DONAMELIST,
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MOREBUILDLINES};
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const UCHAR prod11[] = {0};
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const UCHAR prod12[] = {2,
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NEWLINE,
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MOREBUILDLINES};
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const UCHAR prod13[] = {0}; // BLANKLINES -> prod13 | prod14 |
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const UCHAR prod14[] = {2, // | prod15
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NEWLINE,
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BLANKLINES};
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const UCHAR prod15[] = {2,
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NEWLINESPACE,
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BLANKLINES};
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const UCHAR prod16[] = {1,
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DODEPENDS}; // BUILDINFO -> prod16 | prod17
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const UCHAR prod17[] = {3,
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NAMELIST,
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DODEPENDS,
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COMMANDS};
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const UCHAR prod18[] = {1, COLON}; // SEPARATOR -> prod18 | prod19
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const UCHAR prod19[] = {1, DOUBLECOLON};
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const UCHAR * const productions[] = {
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prod0,
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prod1,
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prod2,
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prod3,
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prod4,
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prod5,
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prod6,
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prod7,
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prod8,
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prod9,
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prod10,
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prod11,
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prod12,
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prod13,
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prod14,
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prod15,
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prod16,
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prod17,
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prod18,
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prod19
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};
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// When either of the high bit (AMBIG_MASK) of something that isn't an ERROR
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// condition is set, it means that there are two productions that apply for
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// that entry, the one given, and the one given plus one. The next token
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// token must be examined to know which production to use.
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// name newline newline semi colon double equals $
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// white colon colon
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// space
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static const UCHAR table[8][8] = {
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{SEPRTR,1 |AMBIG_MASK, 1, SYNTAX, NOTARG, NOTARG, MACRO, 0},
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{SYNTAX,13|AMBIG_MASK, 15, SYNTAX, SYNTAX, SYNTAX, SYNTAX, 13},
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{PARSER,11|AMBIG_MASK, 10, PARSER, SYNTAX, SYNTAX, SYNTAX, 11},
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{PARSER,7, 8, 9, SYNTAX, SYNTAX, SYNTAX, 7},
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{3, SEPEQU, SEPEQU, SEPRTR, 3, 3, 4, SEPEQU},
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{6, 5, 5, 5, 5, 5, NAMES, 5},
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{17, 16, 17, 17, SYNTAX, SYNTAX, SYNTAX, 16},
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{PARSER,SEPRTR, SEPRTR, SEPRTR, 18, 19, SYNTAX, SEPRTR}};
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static const UCHAR useAlternate[3][8] = {
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{YES, NO, NO, YES, YES, YES, YES, NO},
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{NO, YES, YES, NO, NO, NO, NO, YES},
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{NO, YES, YES, NO, NO, NO, NO, NO}};
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void makeName(void);
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void addItemToList(void);
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void makeMacro(void);
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void assignDependents(void);
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void endNameList(void);
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void assignBuildCommands(void);
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static PFV const actions[] = {
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makeName,
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addItemToList,
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makeMacro,
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assignDependents,
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endNameList,
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assignBuildCommands};
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// state tables for lexer's name and string recognizers
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// values are defined in grammar.h
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//
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// d
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// e
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// f m
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// a a c B
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// u | | | | | | | | | |c h| | @ | F |
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// l | # | = | \ | : |WS |NL | $ | ( | ) |r a| * | < | D |
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// t | | | | | |EOF| | | |o r| | ? | R |
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extern const UCHAR stringStates[13][14] = {
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{ 1, 2, 1, 3, 1, 2, OK, 4, 1, 1, 1, 1, 1, 1}, // 0 in col 0
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{ 1, 1, 1, 3, 1, 2, OK, 4, 1, 1, 1, 1, 1, 1}, // 1 default
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{ 1, 1, 1, 3, 1, 2, OK, 4, 1, 1, 1, 1, 1, 1}, // 2 whitespace
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{ 1, 1, 1, 1, 1, 2, 0, 4, 1, 1, 1, 1, 1, 1}, // 3 line cont.
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{CHR,CHR,CHR,CHR,CHR,BAD,BAD,1, 5, CHR,1, 1, 1, 1}, // 4 macro inv.
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{CHR,CHR,CHR,CHR,CHR,NAM,PAR,CHR,CHR,NAM,6, 11, 8, 6}, // 5 found (
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{CHR,CHR,CHR,CHR,9, PAR,PAR,CHR,CHR,2, 6, BAD,BAD,6}, // 6 legal name
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{CHR,CHR,CHR,CHR,9, PAR,PAR,CHR,CHR,2, BAD,BAD,BAD,BAD}, // 7 ext sp mac
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{CHR,CHR,CHR,CHR,9, PAR,PAR,CHR,CHR,2, BAD,BAD,BAD,7}, // 8 sp ch aft(
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{10, 10, SEQ,10, 10, 10, PAR,10, 10, SEQ,10, 10, 10, 10}, // 9 found a :
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{10, 10, 12, 10, 10, 10, PAR,10, 10, EQU,10, 10, 10, 10}, //10 macro subs
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{CHR,CHR,CHR,CHR,9, PAR,PAR,CHR,CHR,2, BAD, 8, BAD,7}, //11 found $(*
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{12, 12, 12, 12, 12, 12, PAR,12, 12, 2, 12, 12, 12, 12}}; //12 look for )
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// In the above table, the columns hold the next state to go to
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// for the given input symbol and the lines represent the states
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// themselves.
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//
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// WS stands for whitespace, meaning space or tab
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// NL stands for newline, EOF stands for end of file
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// macrochar is any alphanumeric character or underscore
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// * is used in the special macros $* and $** ($** is the only
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// two-letter macro that doesn't require parentheses, thus
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// we must treat it specially)
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// @ < ? are characters found in special macros (they are not
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// allowed in the names of a user-defined macros)
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// BFDR are modifiers to special macros which may be appended
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// to the macro name (but they necessitate the use of
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// parentheses in the macro invocation)
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// # is the comment char. # is a comment anywhere on a macro
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// definition line, but is only a comment if it appears in
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// column 0 of a build line. If we're lexing the tools
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// initialization file, then semicolon is also a comment char
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// if it appears in column 0. (Note that the only way
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// to have a pound sign appear in the makefile and NOT be
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// considered a comment is to define a macro "$A = #" on
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// the commandline that invokes nmake.)
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// default is anything not contained in the above groups and not
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// appearing above a column in the table
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//
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// OK means that we accept the string
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// all other mnemonic values are error codes (see end of grammar.h)
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// the states: there is no state to handle comments -- if we see a
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// comment char and we're not ignoring comments, we eat
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// the comment and get another input symbol before consulting
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// the state table
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//
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// 0 initial state -- for all practical purposes, we can
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// assume that we're in column 0. If we're getting a
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// macro value, we don't care what column we're in.
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// If we're getting a build line, the only way we won't
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// be in column 0 is if we're getting a command following
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// a semicolon on the target-dependency line. If the
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// use puts a comment char here, I think it's reasonable
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// to treat it as a comment, since it comes at the beginning
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// of the build command, even though the command itself
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// doesn't start in column 0.
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// We return to the initial state after seeing space-
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// backslash-newline.
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//
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// 1 on any input symbol that isn't a backslash, comment char,
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// or whitespace, we move here whenever we're not in a
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// comment, or a macro definition
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//
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// 2 if the input symbol is whitespace, we move here whenever
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// we're not in a comment or a macro definition.
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//
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// 3 We move here from states 0, 1, or 2 when we've seen a
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// backslash, because if it's followed by a newline, we
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// continue getting the string from the next line of the file.
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// If the next character is a backslash, followed by a newline,
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// there's a kludge in lexer.c that ignores the second back-
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// slash.
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// (The above applies to v. 1.5. v. 1.0 requires whitespace
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// before a backslash.)
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//
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// 4 we move here when we see a dollar sign -- this is where
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// all the error checking starts. We make sure that the
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// macro name is legal, that the substitution sequences
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// are specified correctly (if any is specified at all),
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// and that parens match up. If our next input is $, a
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// special-macro char, or a legal char in a user-defined-
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// macro name, we go back to state 1.
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//
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// 5 found an open paren
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//
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// 6 found a legal macrochar
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//
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// 7 go here for an extended special macro, and from here we
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// look for a close paren (out of order w/ 8)
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//
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// 8 we found a special-macro char after the open paren
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// If we find a special-macro modifier
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// after the special macro char following the open paren
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// then we go to 7
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//
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// 9 found a colon (meaning that the user is going to do
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// some substitution in the macro value)
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// 10 any character that isn't newline, right paren, or EOF
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// brings us here,a nd we loop until we see an equals sign.
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// Newline, EOF, or right paren generate error messages.
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//
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// 11 we move here from state 5 if we see an asterisk, because
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// we have to check for a second asterisk. A second *
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// takes us to state 8 (because a modifier may follow **).
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// If we find a modifier here (instead of a 2nd *), we go
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// to state 7.
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//
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// 12 found an equals sign, so we loop, picking up characters
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// for the replacement string, until we find a close paren.
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// Newline, EOF generate error messages.
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// The following table is used to recognize names
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// It differs from the previous one in that we don't have to deal
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// w/ continuations or comments, and we don't allow special macros
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// (other than the dynamic dependency macros) to be used as part
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// of names.
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//
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// d
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// e
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// f m
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// a a c
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// u | | | | | | | | | |c h| | | |
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// l | # | = | ; | : |WS |NL | $ | ( | ) |r a| { | } | \ | "
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// t | | | | | |EOF| | | |o r| | | |
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extern const UCHAR nameStates[19][15] = {
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{1, OK, OK, OK, 1, OK, OK, 2, 1, 1, 1, 8, 1, BKS,16}, // 0 initial state
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{1, OK, OK, OK, OK, OK, OK, 2, 1, 1, 1, 8, 1, BKS,QUO},// 1 do normal name
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{CHR,BAD,CHR,CHR,CHR,BAD,BAD,1, 3, CHR,1, CHR,CHR,CHR,CHR},// 2 handle macro
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{CHR,PAR,CHR,CHR,NAM,NAM,PAR,CHR,CHR,NAM,4, CHR,CHR,CHR,CHR},// 3 do macro name
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{CHR,PAR,CHR,CHR,5, PAR,PAR,CHR,CHR,1, 4, CHR,CHR,CHR,CHR},// 4 do mac (name)
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{6, 6, SEQ,6, 6, 6, PAR,6, 6, EQU,6, 6, 6, 6 ,6}, // 5 found : do sub
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{6, 6, 7, 6, 6, 6, SEQ,6, 6, SEQ,6, 6, 6, 6 ,6}, // 6 read until =
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{7, 7, 7, 7, 7, 7, SEQ,7, 7, 1, 7, 7, 7, 7 ,7}, // 7 read until )
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{8, OK, 8, 8, 8, 8, OK, 9, 8, 8, 8, 8, 18, 8 ,8}, // 8 do path list
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{CHR,BAD,CHR,CHR,CHR,BAD,BAD,8, 10, CHR,8, CHR,CHR,CHR,CHR},// 9 do macro in {}
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{CHR,PAR,CHR,CHR,NAM,10, PAR,CHR,CHR,NAM,11, CHR,CHR,CHR,CHR},//10 do macro name
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{CHR,PAR,CHR,CHR,12, PAR,PAR,CHR,CHR,8, 11, CHR,CHR,CHR,CHR},//11 do mac (name)
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{13, 13, SEQ,13, 13, 13, PAR,13, 13, EQU,13, 13, 13, 13 ,13}, //12 found : do sub
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{13, 13, 14, 13, 13, 13, SEQ,13, 13, SEQ,13, 13, 13, 13 ,13}, //13 read until =
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{14, 14, 14, 14, 14, 14, SEQ,14, 14, 8, 14, 14, 14, 14 ,14}, //14 read until )
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{1, OK, OK, OK, OK, OK, OK, 2, 1, 1, 1, 8, 1, 1 ,1}, //15 \ found so ...
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{16, 16, 16, 16, 16, 16, NOQ,2, 16, 16, 16, 8, 16, BKS,17}, //16 quoted name
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{OK, OK, OK, OK, OK, OK, OK, OK, OK, OK, OK, OK, OK, OK ,OK}, //17 quoted name
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{1, OK, OK, OK, OK, OK, OK, 2, 1, 1, 1, 8, 1, BKS,16}};//18 read after {}
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// manis :- changed state[8][7]'s value from 10 to 9
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// changed state[9][10]'s value from 1 to 8.....(25th jan 88)
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//
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// this is to allow macros inside path portions of rules, e.g.
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// {$(abc)}.c{$(def)}.obj: .......
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// or foo : {$a;$(bcd);efg\hijk\}lmn.opq .......
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// georgiop: added state 18 to handle quoted names following path lists
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// e.g., {whatever}"foo" [DS #4296, 10/30/96]
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// We now enter state 18 as soon as a path list is read. (We used
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// to return to state 1 in that case and generate an error as
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// soon as the quotes were encountered)
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// Also changed state[8][5] from OK to 8 in order to allow paths
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// containing white space. [DS #14575]
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