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awk: support "length" form of "length()". Closes 8371
function old new delta parse_expr 805 848 +43 tokenlist 447 448 +1 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
c919d561ad
commit
28b00ce6ff
115
editors/awk.c
115
editors/awk.c
@ -207,7 +207,7 @@ typedef struct tsplitter_s {
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/* simple token classes */
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/* Order and hex values are very important!!! See next_token() */
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#define TC_SEQSTART 1 /* ( */
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#define TC_SEQSTART (1 << 0) /* ( */
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#define TC_SEQTERM (1 << 1) /* ) */
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#define TC_REGEXP (1 << 2) /* /.../ */
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#define TC_OUTRDR (1 << 3) /* | > >> */
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@ -227,16 +227,22 @@ typedef struct tsplitter_s {
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#define TC_WHILE (1 << 17)
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#define TC_ELSE (1 << 18)
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#define TC_BUILTIN (1 << 19)
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#define TC_GETLINE (1 << 20)
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#define TC_FUNCDECL (1 << 21) /* `function' `func' */
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#define TC_BEGIN (1 << 22)
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#define TC_END (1 << 23)
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#define TC_EOF (1 << 24)
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#define TC_VARIABLE (1 << 25)
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#define TC_ARRAY (1 << 26)
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#define TC_FUNCTION (1 << 27)
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#define TC_STRING (1 << 28)
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#define TC_NUMBER (1 << 29)
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/* This costs ~50 bytes of code.
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* A separate class to support deprecated "length" form. If we don't need that
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* (i.e. if we demand that only "length()" with () is valid), then TC_LENGTH
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* can be merged with TC_BUILTIN:
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*/
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#define TC_LENGTH (1 << 20)
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#define TC_GETLINE (1 << 21)
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#define TC_FUNCDECL (1 << 22) /* `function' `func' */
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#define TC_BEGIN (1 << 23)
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#define TC_END (1 << 24)
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#define TC_EOF (1 << 25)
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#define TC_VARIABLE (1 << 26)
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#define TC_ARRAY (1 << 27)
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#define TC_FUNCTION (1 << 28)
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#define TC_STRING (1 << 29)
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#define TC_NUMBER (1 << 30)
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#define TC_UOPPRE (TC_UOPPRE1 | TC_UOPPRE2)
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@ -244,14 +250,16 @@ typedef struct tsplitter_s {
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#define TC_BINOP (TC_BINOPX | TC_COMMA | TC_PIPE | TC_IN)
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//#define TC_UNARYOP (TC_UOPPRE | TC_UOPPOST)
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#define TC_OPERAND (TC_VARIABLE | TC_ARRAY | TC_FUNCTION \
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| TC_BUILTIN | TC_GETLINE | TC_SEQSTART | TC_STRING | TC_NUMBER)
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| TC_BUILTIN | TC_LENGTH | TC_GETLINE \
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| TC_SEQSTART | TC_STRING | TC_NUMBER)
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#define TC_STATEMNT (TC_STATX | TC_WHILE)
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#define TC_OPTERM (TC_SEMICOL | TC_NEWLINE)
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/* word tokens, cannot mean something else if not expected */
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#define TC_WORD (TC_IN | TC_STATEMNT | TC_ELSE | TC_BUILTIN \
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| TC_GETLINE | TC_FUNCDECL | TC_BEGIN | TC_END)
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#define TC_WORD (TC_IN | TC_STATEMNT | TC_ELSE \
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| TC_BUILTIN | TC_LENGTH | TC_GETLINE \
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| TC_FUNCDECL | TC_BEGIN | TC_END)
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/* discard newlines after these */
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#define TC_NOTERM (TC_COMMA | TC_GRPSTART | TC_GRPTERM \
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@ -346,54 +354,54 @@ enum {
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#define NTC "\377" /* switch to next token class (tc<<1) */
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#define NTCC '\377'
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#define OC_B OC_BUILTIN
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static const char tokenlist[] ALIGN1 =
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"\1(" NTC
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"\1)" NTC
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"\1/" NTC /* REGEXP */
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"\2>>" "\1>" "\1|" NTC /* OUTRDR */
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"\2++" "\2--" NTC /* UOPPOST */
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"\2++" "\2--" "\1$" NTC /* UOPPRE1 */
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"\2==" "\1=" "\2+=" "\2-=" /* BINOPX */
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"\1(" NTC /* TC_SEQSTART */
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"\1)" NTC /* TC_SEQTERM */
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"\1/" NTC /* TC_REGEXP */
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"\2>>" "\1>" "\1|" NTC /* TC_OUTRDR */
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"\2++" "\2--" NTC /* TC_UOPPOST */
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"\2++" "\2--" "\1$" NTC /* TC_UOPPRE1 */
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"\2==" "\1=" "\2+=" "\2-=" /* TC_BINOPX */
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"\2*=" "\2/=" "\2%=" "\2^="
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"\1+" "\1-" "\3**=" "\2**"
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"\1/" "\1%" "\1^" "\1*"
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"\2!=" "\2>=" "\2<=" "\1>"
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"\1<" "\2!~" "\1~" "\2&&"
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"\2||" "\1?" "\1:" NTC
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"\2in" NTC
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"\1," NTC
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"\1|" NTC
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"\1+" "\1-" "\1!" NTC /* UOPPRE2 */
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"\1]" NTC
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"\1{" NTC
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"\1}" NTC
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"\1;" NTC
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"\1\n" NTC
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"\2if" "\2do" "\3for" "\5break" /* STATX */
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"\2in" NTC /* TC_IN */
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"\1," NTC /* TC_COMMA */
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"\1|" NTC /* TC_PIPE */
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"\1+" "\1-" "\1!" NTC /* TC_UOPPRE2 */
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"\1]" NTC /* TC_ARRTERM */
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"\1{" NTC /* TC_GRPSTART */
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"\1}" NTC /* TC_GRPTERM */
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"\1;" NTC /* TC_SEMICOL */
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"\1\n" NTC /* TC_NEWLINE */
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"\2if" "\2do" "\3for" "\5break" /* TC_STATX */
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"\10continue" "\6delete" "\5print"
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"\6printf" "\4next" "\10nextfile"
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"\6return" "\4exit" NTC
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"\5while" NTC
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"\4else" NTC
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"\3and" "\5compl" "\6lshift" "\2or"
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"\5while" NTC /* TC_WHILE */
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"\4else" NTC /* TC_ELSE */
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"\3and" "\5compl" "\6lshift" "\2or" /* TC_BUILTIN */
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"\6rshift" "\3xor"
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"\5close" "\6system" "\6fflush" "\5atan2" /* BUILTIN */
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"\5close" "\6system" "\6fflush" "\5atan2"
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"\3cos" "\3exp" "\3int" "\3log"
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"\4rand" "\3sin" "\4sqrt" "\5srand"
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"\6gensub" "\4gsub" "\5index" "\6length"
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"\6gensub" "\4gsub" "\5index" /* "\6length" was here */
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"\5match" "\5split" "\7sprintf" "\3sub"
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"\6substr" "\7systime" "\10strftime" "\6mktime"
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"\7tolower" "\7toupper" NTC
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"\7getline" NTC
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"\4func" "\10function" NTC
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"\5BEGIN" NTC
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"\3END"
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"\6length" NTC /* TC_LENGTH */
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"\7getline" NTC /* TC_GETLINE */
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"\4func" "\10function" NTC /* TC_FUNCDECL */
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"\5BEGIN" NTC /* TC_BEGIN */
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"\3END" /* TC_END */
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/* compiler adds trailing "\0" */
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;
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#define OC_B OC_BUILTIN
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static const uint32_t tokeninfo[] = {
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0,
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0,
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@ -408,7 +416,7 @@ static const uint32_t tokeninfo[] = {
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OC_COMPARE|VV|P(39)|4, OC_COMPARE|VV|P(39)|3, OC_COMPARE|VV|P(39)|0, OC_COMPARE|VV|P(39)|1,
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OC_COMPARE|VV|P(39)|2, OC_MATCH|Sx|P(45)|'!', OC_MATCH|Sx|P(45)|'~', OC_LAND|Vx|P(55),
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OC_LOR|Vx|P(59), OC_TERNARY|Vx|P(64)|'?', OC_COLON|xx|P(67)|':',
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OC_IN|SV|P(49), /* in */
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OC_IN|SV|P(49), /* TC_IN */
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OC_COMMA|SS|P(80),
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OC_PGETLINE|SV|P(37),
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OC_UNARY|xV|P(19)|'+', OC_UNARY|xV|P(19)|'-', OC_UNARY|xV|P(19)|'!',
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@ -423,20 +431,20 @@ static const uint32_t tokeninfo[] = {
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OC_RETURN|Vx, OC_EXIT|Nx,
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ST_WHILE,
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0, /* else */
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OC_B|B_an|P(0x83), OC_B|B_co|P(0x41), OC_B|B_ls|P(0x83), OC_B|B_or|P(0x83),
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OC_B|B_rs|P(0x83), OC_B|B_xo|P(0x83),
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OC_FBLTIN|Sx|F_cl, OC_FBLTIN|Sx|F_sy, OC_FBLTIN|Sx|F_ff, OC_B|B_a2|P(0x83),
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OC_FBLTIN|Nx|F_co, OC_FBLTIN|Nx|F_ex, OC_FBLTIN|Nx|F_in, OC_FBLTIN|Nx|F_lg,
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OC_FBLTIN|F_rn, OC_FBLTIN|Nx|F_si, OC_FBLTIN|Nx|F_sq, OC_FBLTIN|Nx|F_sr,
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OC_B|B_ge|P(0xd6), OC_B|B_gs|P(0xb6), OC_B|B_ix|P(0x9b), OC_FBLTIN|Sx|F_le,
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OC_B|B_ge|P(0xd6), OC_B|B_gs|P(0xb6), OC_B|B_ix|P(0x9b), /* OC_FBLTIN|Sx|F_le, was here */
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OC_B|B_ma|P(0x89), OC_B|B_sp|P(0x8b), OC_SPRINTF, OC_B|B_su|P(0xb6),
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OC_B|B_ss|P(0x8f), OC_FBLTIN|F_ti, OC_B|B_ti|P(0x0b), OC_B|B_mt|P(0x0b),
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OC_B|B_lo|P(0x49), OC_B|B_up|P(0x49),
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OC_FBLTIN|Sx|F_le, /* TC_LENGTH */
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OC_GETLINE|SV|P(0),
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0, 0,
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0,
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0 /* END */
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0 /* TC_END */
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};
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/* internal variable names and their initial values */
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@ -1202,9 +1210,10 @@ static uint32_t next_token(uint32_t expected)
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ltclass = t_tclass;
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/* Are we ready for this? */
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if (!(ltclass & expected))
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if (!(ltclass & expected)) {
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syntax_error((ltclass & (TC_NEWLINE | TC_EOF)) ?
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EMSG_UNEXP_EOS : EMSG_UNEXP_TOKEN);
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}
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return ltclass;
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#undef concat_inserted
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@ -1371,6 +1380,16 @@ static node *parse_expr(uint32_t iexp)
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debug_printf_parse("%s: TC_BUILTIN\n", __func__);
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cn->l.n = condition();
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break;
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case TC_LENGTH:
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debug_printf_parse("%s: TC_LENGTH\n", __func__);
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next_token(TC_SEQSTART | TC_OPTERM | TC_GRPTERM);
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rollback_token();
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if (t_tclass & TC_SEQSTART) {
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/* It was a "(" token. Handle just like TC_BUILTIN */
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cn->l.n = condition();
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}
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break;
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}
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}
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}
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@ -281,6 +281,11 @@ testing "awk length(array)" \
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"2\n" \
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"" ""
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testing "awk length()" \
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"awk '{print length; print length(); print length(\"qwe\"); print length(99+9)}'" \
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"3\n3\n3\n3\n" \
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"" "qwe"
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testing "awk -f and ARGC" \
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"awk -f - input" \
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"re\n2\n" \
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