GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2015 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file parses the real action of the VCL code, the procedure
 * statements which do the actual work.
 */

#include "config.h"

#include <string.h>

#include "vcc_compile.h"
#include "libvcc.h"

/*--------------------------------------------------------------------*/

static void v_matchproto_(sym_act_f)
vcc_act_call(struct vcc *tl, struct token *t, struct symbol *sym)
{
        struct token *t0;
        unsigned u;

        (void)t;
        ExpectErr(tl, ID);
        t0 = tl->t;
        sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_NONE, SYMTAB_PARTIAL_NOERR,
            XREF_REF);
        if (sym == NULL) {
                sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_SUB, SYMTAB_CREATE,
                    XREF_REF);
                if (sym == NULL)
                        return;
                VCC_GlobalSymbol(sym, SUB);
        }

        if (sym->kind == SYM_SUB) {
                vcc_AddCall(tl, t0, sym);

                Fb(tl, 1, "%s(ctx, VSUB_STATIC, NULL);\n", sym->lname);
                SkipToken(tl, ';');
                return;
        }

        tl->t = t0;
        u = tl->unique++;

        Fb(tl, 1, "{\n");
        tl->indent += INDENT;
        Fb(tl, 2, "VCL_SUB call_%u =\n", u);
        tl->indent += INDENT;
        vcc_Expr(tl, SUB);
        Fb(tl, 2, ";\n\n");
        SkipToken(tl, ';');
        tl->indent -= INDENT;
        Fb(tl, 2, "if (call_%u == NULL) {\n", u);
        Fb(tl, 2, "  VRT_fail(ctx, \"Tried to call NULL SUB near"
           " source %%u line %%u\",\n");
        Fb(tl, 2, "    VGC_ref[%u].source,\n", tl->cnt);
        Fb(tl, 2, "    VGC_ref[%u].line);\n", tl->cnt);
        Fb(tl, 2, "  END_;\n");
        Fb(tl, 2, "}\n");
        Fb(tl, 2, "call_%u->func(ctx, VSUB_STATIC, NULL);\n", u);
        tl->indent -= INDENT;
        Fb(tl, 1, "}\n");
}

/*--------------------------------------------------------------------*/

static const struct assign {
        vcc_type_t              type;
        unsigned                oper;
        vcc_type_t              want;
        const char              *expr;
} assign[] = {
        { INT,          T_INCR,         INT, "\v + " },
        { INT,          T_DECR,         INT, "\v - " },
        { INT,          T_MUL,          INT, "\v * " },
        { INT,          T_DIV,          INT, "\v / " },
        { INT,          '=',            INT },
        { INT,          0,              INT },
        { TIME,         T_INCR,         DURATION, "\v + " },
        { TIME,         T_DECR,         DURATION, "\v - " },
        { TIME,         T_MUL,          REAL, "\v * " },
        { TIME,         T_DIV,          REAL, "\v / " },
        { TIME,         '=',            TIME },
        { TIME,         0,              TIME },
        { DURATION,     T_INCR,         DURATION, "\v + " },
        { DURATION,     T_DECR,         DURATION, "\v - " },
        { DURATION,     T_MUL,          REAL, "\v * " },
        { DURATION,     T_DIV,          REAL, "\v / " },
        { DURATION,     '=',            DURATION },
        { DURATION,     0,              DURATION },
        { STRING,       T_INCR,         STRANDS, "\v,\n" },
        { STRING,       '=',            STRANDS, "0,\n" },
        { HEADER,       T_INCR,         STRANDS, "VRT_GetHdr(ctx, \v),\n" },
        { HEADER,       '=',            STRANDS, "0,\n" },
        { BODY,         '=',            BODY, "LBODY_SET_" },
        { BODY,         T_INCR,         BODY, "LBODY_ADD_" },
        { VOID,         '=',            VOID }
};

static void
vcc_assign_expr(struct vcc *tl, struct symbol *sym, const struct assign *ap)
{
        const char *e;
        unsigned indent = 1;

        e = ap->expr;
        if (e == NULL)
                return;

        while (*e != '\0') {
                if (*e == '\v')
                        Fb(tl, indent, "%s", sym->rname);
                else
                        Fb(tl, indent, "%c", *e);
                indent = 0;
                e++;
        }
}

/*--------------------------------------------------------------------*/

static void v_matchproto_(sym_act_f)
vcc_act_set(struct vcc *tl, struct token *t, struct symbol *sym)
{
        const struct assign *ap;
        vcc_type_t type;

        (void)t;
        ExpectErr(tl, ID);
        t = tl->t;
        sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
        ERRCHK(tl);
        AN(sym);
        vcc_AddUses(tl, t, tl->t, sym, XREF_WRITE);
        ERRCHK(tl);
        type = sym->type;
        for (ap = assign; ap->type != VOID; ap++) {
                if (ap->type != type)
                        continue;
                if (ap->oper != tl->t->tok)
                        continue;
                vcc_NextToken(tl);
                type = ap->want;
                break;
        }

        if (ap->type == VOID)
                SkipToken(tl, ap->oper);

        Fb(tl, 1, "%s\n", sym->lname);
        tl->indent += INDENT;
        vcc_assign_expr(tl, sym, ap);
        vcc_Expr(tl, type);
        ERRCHK(tl);
        tl->indent -= INDENT;
        Fb(tl, 1, ");\n");
        SkipToken(tl, ';');
}

/*--------------------------------------------------------------------*/

static void v_matchproto_(sym_act_f)
vcc_act_unset(struct vcc *tl, struct token *t, struct symbol *sym)
{

        /* XXX: Wrong, should use VCC_Expr(HEADER) */
        ExpectErr(tl, ID);
        t = tl->t;
        sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
        ERRCHK(tl);
        AN(sym);
        if (sym->u_methods == 0) {
                vcc_ErrWhere2(tl, t, tl->t);
                VSB_cat(tl->sb, "Variable cannot be unset.\n");
                return;
        }
        vcc_AddUses(tl, t, tl->t, sym, XREF_UNSET);
        Fb(tl, 1, "%s;\n", sym->uname);
        SkipToken(tl, ';');
}

/*--------------------------------------------------------------------*/

static void v_matchproto_(sym_act_f)
vcc_act_ban(struct vcc *tl, struct token *t, struct symbol *sym)
{

        (void)t;
        (void)sym;

        SkipToken(tl, '(');

        Fb(tl, 1, "(void) VRT_ban_string(ctx, \n");
        tl->indent += INDENT;
        vcc_Expr(tl, STRING);
        tl->indent -= INDENT;
        ERRCHK(tl);
        Fb(tl, 1, ");\n");

        SkipToken(tl, ')');
        SkipToken(tl, ';');
}

/*--------------------------------------------------------------------*/

static void v_matchproto_(sym_act_f)
vcc_act_hash_data(struct vcc *tl, struct token *t, struct symbol *sym)
{

        (void)t;
        (void)sym;
        SkipToken(tl, '(');

        Fb(tl, 1, "VRT_hashdata(ctx,\n  ");
        vcc_Expr(tl, STRANDS);
        ERRCHK(tl);
        Fb(tl, 1, ");\n");
        SkipToken(tl, ')');
        SkipToken(tl, ';');
}

/*--------------------------------------------------------------------*/

static void
vcc_act_return_pass(struct vcc *tl)
{

        SkipToken(tl, '(');
        Fb(tl, 1, "VRT_hit_for_pass(ctx,\n");
        tl->indent += INDENT;
        vcc_Expr(tl, DURATION);
        ERRCHK(tl);
        SkipToken(tl, ')');
        Fb(tl, 1, ");\n");
        tl->indent -= INDENT;
}
/*--------------------------------------------------------------------*/

static void
vcc_act_return_fail(struct vcc *tl)
{
        SkipToken(tl, '(');
        Fb(tl, 1, "VRT_fail(ctx, \"%%s\",\n");
        tl->indent += INDENT;
        vcc_Expr(tl, STRING);
        tl->indent -= INDENT;
        ERRCHK(tl);
        SkipToken(tl, ')');
        Fb(tl, 1, ");\n");
}

/*--------------------------------------------------------------------*/

static void
vcc_act_return_synth(struct vcc *tl)
{

        SkipToken(tl, '(');
        Fb(tl, 1, "VRT_synth(ctx,\n");
        tl->indent += INDENT;
        vcc_Expr(tl, INT);
        ERRCHK(tl);
        Fb(tl, 1, ",\n");
        if (tl->t->tok == ',') {
                vcc_NextToken(tl);
                vcc_Expr(tl, STRING);
                ERRCHK(tl);
        } else {
                Fb(tl, 1, "(const char*)0\n");
        }
        tl->indent -= INDENT;
        SkipToken(tl, ')');
        Fb(tl, 1, ");\n");
}

/*--------------------------------------------------------------------*/

static void
vcc_act_return_vcl(struct vcc *tl)
{
        struct symbol *sym;
        struct inifin *p;
        char buf[1024];

        SkipToken(tl, '(');
        ExpectErr(tl, ID);
        sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VCL, SYMTAB_EXISTING, XREF_NONE);
        ERRCHK(tl);
        AN(sym);
        if (sym->eval_priv == NULL) {
                VSB_cat(tl->symtab, ",\n    {\n");
                VSB_cat(tl->symtab, "\t\"dir\": \"import\",\n");
                VSB_cat(tl->symtab, "\t\"type\": \"$VCL\",\n");
                VSB_printf(tl->symtab, "\t\"name\": \"%s\"\n", sym->name);
                VSB_cat(tl->symtab, "   }");

                bprintf(buf, "vgc_vcl_%u", tl->unique++);
                sym->eval_priv = strdup(buf);
                AN(sym->eval_priv);

                Fh(tl, 0, "static VCL_VCL %s;", buf);
                Fh(tl, 0, "\t/* VCL %s */\n", sym->name);

                p = New_IniFin(tl);
                AN(p);
                VSB_printf(p->ini, "\t%s = VPI_vcl_get(ctx, \"%s\");",
                    buf, sym->name);
                VSB_printf(p->fin, "\tVPI_vcl_rel(ctx, %s);",
                    buf);
        }
        Fb(tl, 1, "VPI_vcl_select(ctx, %s);\t/* %s */\n",
            (const char*)sym->eval_priv, sym->name);
        SkipToken(tl, ')');
}

/*--------------------------------------------------------------------*/

static void v_matchproto_(sym_act_f)
vcc_act_return(struct vcc *tl, struct token *t, struct symbol *sym)
{
        unsigned hand, mask;
        const char *h;

        (void)t;
        (void)sym;
        AN(tl->curproc);
        if (tl->t->tok == ';' && tl->curproc->method == NULL) {
                SkipToken(tl, ';');
                Fb(tl, 1, "return;\n");
                return;
        }
        SkipToken(tl, '(');
        ExpectErr(tl, ID);

        hand = VCL_RET_MAX;
        h = NULL;
        mask = 0;
#define VCL_RET_MAC(l, U, B)                            \
                if (vcc_IdIs(tl->t, #l)) {              \
                        hand = VCL_RET_ ## U;           \
                        h = #U;                         \
                        mask = (B);                     \
                }
#include "tbl/vcl_returns.h"
        if (h == NULL) {
                VSB_cat(tl->sb, "Expected return action name.\n");
                vcc_ErrWhere(tl, tl->t);
                ERRCHK(tl);
        }
        assert(hand < VCL_RET_MAX);
        AN(mask);

        vcc_ProcAction(tl->curproc, hand, mask, tl->t);
        vcc_NextToken(tl);
        if (tl->t->tok == '(') {
                if (hand == VCL_RET_SYNTH || hand == VCL_RET_ERROR)
                        vcc_act_return_synth(tl);
                else if (hand == VCL_RET_VCL)
                        vcc_act_return_vcl(tl);
                else if (hand == VCL_RET_PASS)
                        vcc_act_return_pass(tl);
                else if (hand == VCL_RET_FAIL)
                        vcc_act_return_fail(tl);
                else {
                        VSB_cat(tl->sb, "Arguments not allowed.\n");
                        vcc_ErrWhere(tl, tl->t);
                }
        } else {
                if (hand == VCL_RET_SYNTH || hand == VCL_RET_VCL) {
                        VSB_cat(tl->sb, "Missing argument.\n");
                        vcc_ErrWhere(tl, tl->t);
                }
        }
        ERRCHK(tl);
        Fb(tl, 1, "END_;\n");
        if (hand == VCL_RET_FAIL)
                Fb(tl, 1, "VRT_fail(ctx, \"Failed from VCL\");\n");
        else
                Fb(tl, 1, "VRT_handling(ctx, VCL_RET_%s);\n", h);
        SkipToken(tl, ')');
        SkipToken(tl, ';');
}

/*--------------------------------------------------------------------*/

static void v_matchproto_(sym_act_f)
vcc_act_synthetic(struct vcc *tl, struct token *t, struct symbol *sym)
{

        (void)t;
        (void)sym;
        ExpectErr(tl, '(');
        ERRCHK(tl);
        vcc_NextToken(tl);

        Fb(tl, 1, "VRT_synth_strands(ctx, ");
        vcc_Expr(tl, STRANDS);
        ERRCHK(tl);
        Fb(tl, 1, ");\n");

        SkipToken(tl, ')');
        SkipToken(tl, ';');
}

/*--------------------------------------------------------------------*/

// The pp[] trick is to make the length of #name visible to flexelint.
#define ACT(name, func, mask)                                           \
        do {                                                            \
                const char pp[] = #name;                                \
                sym = VCC_MkSym(tl, pp, SYM_MAIN, SYM_ACTION, VCL_LOW,  \
                    VCL_HIGH);                                          \
                AN(sym);                                                \
                sym->action = func;                                     \
                sym->action_mask = (mask);                              \
        } while (0)

void
vcc_Action_Init(struct vcc *tl)
{
        struct symbol *sym;

        ACT(ban,        vcc_act_ban,    0);
        ACT(call,       vcc_act_call,   0);
        ACT(hash_data,  vcc_act_hash_data,
                VCL_MET_HASH);
        ACT(if,         vcc_Act_If,     0);
        ACT(new,        vcc_Act_New,
                VCL_MET_INIT);
        ACT(return,     vcc_act_return, 0);
        ACT(set,        vcc_act_set,    0);
        ACT(synthetic,  vcc_act_synthetic,
                VCL_MET_SYNTH | VCL_MET_BACKEND_ERROR);
        ACT(unset,      vcc_act_unset,  0);
}

		varnish-cache/lib/libvcc/vcc_action.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2015 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9	2500200	* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15	2500200	* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23	2500200	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28	2500200	* SUCH DAMAGE.
29		*
30		* This file parses the real action of the VCL code, the procedure
31		* statements which do the actual work.
32		*/
33
34		#include "config.h"
35
36		#include <string.h>
37
38		#include "vcc_compile.h"
39		#include "libvcc.h"
40
41		/--------------------------------------------------------------------/
42
43		static void v_matchproto_(sym_act_f)
44	5318720	vcc_act_call(struct vcc tl, struct token t, struct symbol *sym)
45		{
46		struct token *t0;
47		unsigned u;
48
49	2818520	(void)t;
50	5318720	ExpectErr(tl, ID);
51	2818520	t0 = tl->t;
52	2818520	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_NONE, SYMTAB_PARTIAL_NOERR,
53		XREF_REF);
54	5318720	if (sym == NULL) {
55	2475520	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_SUB, SYMTAB_CREATE,
56		XREF_REF);
57	2475520	if (sym == NULL)
58	2500200	return;
59	2475520	VCC_GlobalSymbol(sym, SUB);
60	2475520	}
61
62	2818520	if (sym->kind == SYM_SUB) {
63	5318600	vcc_AddCall(tl, t0, sym);
64
65	2818400	Fb(tl, 1, "%s(ctx, VSUB_STATIC, NULL);\n", sym->lname);
66	2818400	SkipToken(tl, ';');
67	2818400	return;
68		}
69
70	2500320	tl->t = t0;
71	120	u = tl->unique++;
72
73	120	Fb(tl, 1, "{\n");
74	120	tl->indent += INDENT;
75	2500320	Fb(tl, 2, "VCL_SUB call_%u =\n", u);
76	120	tl->indent += INDENT;
77	120	vcc_Expr(tl, SUB);
78	120	Fb(tl, 2, ";\n\n");
79	2500320	SkipToken(tl, ';');
80	80	tl->indent -= INDENT;
81	80	Fb(tl, 2, "if (call_%u == NULL) {\n", u);
82	80	Fb(tl, 2, " VRT_fail(ctx, \"Tried to call NULL SUB near"
83		" source %%u line %%u\",\n");
84	80	Fb(tl, 2, " VGC_ref[%u].source,\n", tl->cnt);
85	80	Fb(tl, 2, " VGC_ref[%u].line);\n", tl->cnt);
86	80	Fb(tl, 2, " END_;\n");
87	80	Fb(tl, 2, "}\n");
88	80	Fb(tl, 2, "call_%u->func(ctx, VSUB_STATIC, NULL);\n", u);
89	2500280	tl->indent -= INDENT;
90	80	Fb(tl, 1, "}\n");
91	2818520	}
92
93		/--------------------------------------------------------------------/
94	2500200
95		static const struct assign {
96		vcc_type_t type;
97		unsigned oper;
98		vcc_type_t want;
99		const char *expr;
100		} assign[] = {
101		{ INT, T_INCR, INT, "\v + " },
102		{ INT, T_DECR, INT, "\v - " },
103		{ INT, T_MUL, INT, "\v * " },
104	2500200	{ INT, T_DIV, INT, "\v / " },
105		{ INT, '=', INT },
106		{ INT, 0, INT },
107		{ TIME, T_INCR, DURATION, "\v + " },
108		{ TIME, T_DECR, DURATION, "\v - " },
109		{ TIME, T_MUL, REAL, "\v * " },
110		{ TIME, T_DIV, REAL, "\v / " },
111		{ TIME, '=', TIME },
112		{ TIME, 0, TIME },
113		{ DURATION, T_INCR, DURATION, "\v + " },
114		{ DURATION, T_DECR, DURATION, "\v - " },
115		{ DURATION, T_MUL, REAL, "\v * " },
116		{ DURATION, T_DIV, REAL, "\v / " },
117		{ DURATION, '=', DURATION },
118		{ DURATION, 0, DURATION },
119		{ STRING, T_INCR, STRANDS, "\v,\n" },
120		{ STRING, '=', STRANDS, "0,\n" },
121		{ HEADER, T_INCR, STRANDS, "VRT_GetHdr(ctx, \v),\n" },
122		{ HEADER, '=', STRANDS, "0,\n" },
123		{ BODY, '=', BODY, "LBODY_SET_" },
124		{ BODY, T_INCR, BODY, "LBODY_ADD_" },
125		{ VOID, '=', VOID }
126		};
127
128		static void
129	1123640	vcc_assign_expr(struct vcc tl, struct symbol sym, const struct assign *ap)
130		{
131		const char *e;
132	1123640	unsigned indent = 1;
133
134	1123640	e = ap->expr;
135	1123640	if (e == NULL)
136	252440	return;
137
138	5068960	while (*e != '\0') {
139	4197760	if (*e == '\v')
140	680	Fb(tl, indent, "%s", sym->rname);
141		else
142	4197080	Fb(tl, indent, "%c", *e);
143	4197760	indent = 0;
144	4197760	e++;
145		}
146	1123640	}
147
148		/--------------------------------------------------------------------/
149
150		static void v_matchproto_(sym_act_f)
151	1124120	vcc_act_set(struct vcc tl, struct token t, struct symbol *sym)
152		{
153		const struct assign *ap;
154		vcc_type_t type;
155
156	1124120	(void)t;
157	1124120	ExpectErr(tl, ID);
158	1124120	t = tl->t;
159	1124120	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
160	1124120	ERRCHK(tl);
161	1123800	AN(sym);
162	1123800	vcc_AddUses(tl, t, tl->t, sym, XREF_WRITE);
163	1123800	ERRCHK(tl);
164	1123800	type = sym->type;
165	24692680	for (ap = assign; ap->type != VOID; ap++) {
166	24562160	if (ap->type != type)
167	22435600	continue;
168	2126560	if (ap->oper != tl->t->tok)
169	1133280	continue;
170	993280	vcc_NextToken(tl);
171	993280	type = ap->want;
172	993280	break;
173		}
174
175	1123800	if (ap->type == VOID)
176	130520	SkipToken(tl, ap->oper);
177
178	1123640	Fb(tl, 1, "%s\n", sym->lname);
179	1123640	tl->indent += INDENT;
180	1123640	vcc_assign_expr(tl, sym, ap);
181	1123640	vcc_Expr(tl, type);
182	1123640	ERRCHK(tl);
183	1121960	tl->indent -= INDENT;
184	1121960	Fb(tl, 1, ");\n");
185	1121960	SkipToken(tl, ';');
186	1124120	}
187
188		/--------------------------------------------------------------------/
189
190		static void v_matchproto_(sym_act_f)
191	227480	vcc_act_unset(struct vcc tl, struct token t, struct symbol *sym)
192		{
193
194		/* XXX: Wrong, should use VCC_Expr(HEADER) */
195	227480	ExpectErr(tl, ID);
196	227480	t = tl->t;
197	227480	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
198	227480	ERRCHK(tl);
199	227480	AN(sym);
200	227480	if (sym->u_methods == 0) {
201	80	vcc_ErrWhere2(tl, t, tl->t);
202	80	VSB_cat(tl->sb, "Variable cannot be unset.\n");
203	80	return;
204		}
205	227400	vcc_AddUses(tl, t, tl->t, sym, XREF_UNSET);
206	227400	Fb(tl, 1, "%s;\n", sym->uname);
207	227400	SkipToken(tl, ';');
208	227480	}
209
210		/--------------------------------------------------------------------/
211
212		static void v_matchproto_(sym_act_f)
213	600	vcc_act_ban(struct vcc tl, struct token t, struct symbol *sym)
214		{
215
216	600	(void)t;
217	600	(void)sym;
218
219	600	SkipToken(tl, '(');
220
221	600	Fb(tl, 1, "(void) VRT_ban_string(ctx, \n");
222	600	tl->indent += INDENT;
223	600	vcc_Expr(tl, STRING);
224	600	tl->indent -= INDENT;
225	600	ERRCHK(tl);
226	560	Fb(tl, 1, ");\n");
227
228	560	SkipToken(tl, ')');
229	560	SkipToken(tl, ';');
230	600	}
231
232		/--------------------------------------------------------------------/
233
234		static void v_matchproto_(sym_act_f)
235	338080	vcc_act_hash_data(struct vcc tl, struct token t, struct symbol *sym)
236		{
237
238	338080	(void)t;
239	338080	(void)sym;
240	338080	SkipToken(tl, '(');
241
242	338080	Fb(tl, 1, "VRT_hashdata(ctx,\n ");
243	338080	vcc_Expr(tl, STRANDS);
244	338080	ERRCHK(tl);
245	338040	Fb(tl, 1, ");\n");
246	338040	SkipToken(tl, ')');
247	338040	SkipToken(tl, ';');
248	338080	}
249
250		/--------------------------------------------------------------------/
251
252		static void
253	320	vcc_act_return_pass(struct vcc *tl)
254		{
255
256	320	SkipToken(tl, '(');
257	320	Fb(tl, 1, "VRT_hit_for_pass(ctx,\n");
258	320	tl->indent += INDENT;
259	320	vcc_Expr(tl, DURATION);
260	320	ERRCHK(tl);
261	320	SkipToken(tl, ')');
262	320	Fb(tl, 1, ");\n");
263	320	tl->indent -= INDENT;
264	320	}
265		/--------------------------------------------------------------------/
266
267		static void
268	2240	vcc_act_return_fail(struct vcc *tl)
269		{
270	2240	SkipToken(tl, '(');
271	2240	Fb(tl, 1, "VRT_fail(ctx, \"%%s\",\n");
272	2240	tl->indent += INDENT;
273	2240	vcc_Expr(tl, STRING);
274	2240	tl->indent -= INDENT;
275	2240	ERRCHK(tl);
276	2240	SkipToken(tl, ')');
277	2240	Fb(tl, 1, ");\n");
278	2240	}
279
280		/--------------------------------------------------------------------/
281
282		static void
283	345520	vcc_act_return_synth(struct vcc *tl)
284		{
285
286	345520	SkipToken(tl, '(');
287	345520	Fb(tl, 1, "VRT_synth(ctx,\n");
288	345520	tl->indent += INDENT;
289	345520	vcc_Expr(tl, INT);
290	345520	ERRCHK(tl);
291	345520	Fb(tl, 1, ",\n");
292	345520	if (tl->t->tok == ',') {
293	114400	vcc_NextToken(tl);
294	114400	vcc_Expr(tl, STRING);
295	114400	ERRCHK(tl);
296	114400	} else {
297	231120	Fb(tl, 1, "(const char*)0\n");
298		}
299	345520	tl->indent -= INDENT;
300	345520	SkipToken(tl, ')');
301	345520	Fb(tl, 1, ");\n");
302	345520	}
303
304		/--------------------------------------------------------------------/
305
306		static void
307	960	vcc_act_return_vcl(struct vcc *tl)
308		{
309		struct symbol *sym;
310		struct inifin *p;
311		char buf[1024];
312
313	960	SkipToken(tl, '(');
314	960	ExpectErr(tl, ID);
315	960	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VCL, SYMTAB_EXISTING, XREF_NONE);
316	960	ERRCHK(tl);
317	880	AN(sym);
318	880	if (sym->eval_priv == NULL) {
319	840	VSB_cat(tl->symtab, ",\n {\n");
320	840	VSB_cat(tl->symtab, "\t\"dir\": \"import\",\n");
321	840	VSB_cat(tl->symtab, "\t\"type\": \"$VCL\",\n");
322	840	VSB_printf(tl->symtab, "\t\"name\": \"%s\"\n", sym->name);
323	840	VSB_cat(tl->symtab, " }");
324
325	840	bprintf(buf, "vgc_vcl_%u", tl->unique++);
326	840	sym->eval_priv = strdup(buf);
327	840	AN(sym->eval_priv);
328
329	840	Fh(tl, 0, "static VCL_VCL %s;", buf);
330	840	Fh(tl, 0, "\t/* VCL %s */\n", sym->name);
331
332	840	p = New_IniFin(tl);
333	840	AN(p);
334	1680	VSB_printf(p->ini, "\t%s = VPI_vcl_get(ctx, \"%s\");",
335	840	buf, sym->name);
336	1680	VSB_printf(p->fin, "\tVPI_vcl_rel(ctx, %s);",
337	840	buf);
338	840	}
339	1760	Fb(tl, 1, "VPI_vcl_select(ctx, %s);\t/* %s */\n",
340	880	(const char*)sym->eval_priv, sym->name);
341	880	SkipToken(tl, ')');
342	960	}
343
344		/--------------------------------------------------------------------/
345
346		static void v_matchproto_(sym_act_f)
347	2500440	vcc_act_return(struct vcc tl, struct token t, struct symbol *sym)
348		{
349		unsigned hand, mask;
350		const char *h;
351
352	2500440	(void)t;
353	2500440	(void)sym;
354	2500440	AN(tl->curproc);
355	2500440	if (tl->t->tok == ';' && tl->curproc->method == NULL) {
356	200	SkipToken(tl, ';');
357	200	Fb(tl, 1, "return;\n");
358	200	return;
359		}
360	2500240	SkipToken(tl, '(');
361	2500200	ExpectErr(tl, ID);
362
363	2500200	hand = VCL_RET_MAX;
364	2500200	h = NULL;
365	2500200	mask = 0;
366		#define VCL_RET_MAC(l, U, B) \
367		if (vcc_IdIs(tl->t, #l)) { \
368		hand = VCL_RET_ ## U; \
369		h = #U; \
370		mask = (B); \
371		}
372		#include "tbl/vcl_returns.h"
373	2500200	if (h == NULL) {
374	40	VSB_cat(tl->sb, "Expected return action name.\n");
375	40	vcc_ErrWhere(tl, tl->t);
376	40	ERRCHK(tl);
377	0	}
378	2500160	assert(hand < VCL_RET_MAX);
379	2500160	AN(mask);
380
381		vcc_ProcAction(tl->curproc, hand, mask, tl->t);
382		vcc_NextToken(tl);
383	2500160	if (tl->t->tok == '(') {
384	349080	if (hand == VCL_RET_SYNTH \|\| hand == VCL_RET_ERROR)
385	345520	vcc_act_return_synth(tl);
386	3560	else if (hand == VCL_RET_VCL)
387	960	vcc_act_return_vcl(tl);
388	2600	else if (hand == VCL_RET_PASS)
389	320	vcc_act_return_pass(tl);
390	2280	else if (hand == VCL_RET_FAIL)
391	2240	vcc_act_return_fail(tl);
392		else {
393	40	VSB_cat(tl->sb, "Arguments not allowed.\n");
394	40	vcc_ErrWhere(tl, tl->t);
395		}
396	349080	} else {
397	2151080	if (hand == VCL_RET_SYNTH \|\| hand == VCL_RET_VCL) {
398	40	VSB_cat(tl->sb, "Missing argument.\n");
399	40	vcc_ErrWhere(tl, tl->t);
400	40	}
401		}
402	2500160	ERRCHK(tl);
403		Fb(tl, 1, "END_;\n");
404	2500000	if (hand == VCL_RET_FAIL)
405	3120	Fb(tl, 1, "VRT_fail(ctx, \"Failed from VCL\");\n");
406		else
407	2496880	Fb(tl, 1, "VRT_handling(ctx, VCL_RET_%s);\n", h);
408	2500000	SkipToken(tl, ')');
409	2500000	SkipToken(tl, ';');
410		}
411
412		/--------------------------------------------------------------------/
413
414		static void v_matchproto_(sym_act_f)
415	240	vcc_act_synthetic(struct vcc tl, struct token t, struct symbol *sym)
416		{
417
418	240	(void)t;
419	240	(void)sym;
420	240	ExpectErr(tl, '(');
421	240	ERRCHK(tl);
422	240	vcc_NextToken(tl);
423
424	240	Fb(tl, 1, "VRT_synth_strands(ctx, ");
425	240	vcc_Expr(tl, STRANDS);
426	240	ERRCHK(tl);
427	200	Fb(tl, 1, ");\n");
428
429	200	SkipToken(tl, ')');
430	200	SkipToken(tl, ';');
431	240	}
432
433		/--------------------------------------------------------------------/
434
435		// The pp[] trick is to make the length of #name visible to flexelint.
436		#define ACT(name, func, mask) \
437		do { \
438		const char pp[] = #name; \
439		sym = VCC_MkSym(tl, pp, SYM_MAIN, SYM_ACTION, VCL_LOW, \
440		VCL_HIGH); \
441		AN(sym); \
442		sym->action = func; \
443		sym->action_mask = (mask); \
444		} while (0)
445
446		void
447	121960	vcc_Action_Init(struct vcc *tl)
448		{
449		struct symbol *sym;
450
451	121960	ACT(ban, vcc_act_ban, 0);
452	121960	ACT(call, vcc_act_call, 0);
453	121960	ACT(hash_data, vcc_act_hash_data,
454		VCL_MET_HASH);
455	121960	ACT(if, vcc_Act_If, 0);
456	121960	ACT(new, vcc_Act_New,
457		VCL_MET_INIT);
458	121960	ACT(return, vcc_act_return, 0);
459	121960	ACT(set, vcc_act_set, 0);
460	121960	ACT(synthetic, vcc_act_synthetic,
461		VCL_MET_SYNTH \| VCL_MET_BACKEND_ERROR);
462	121960	ACT(unset, vcc_act_unset, 0);
463	121960	}