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	61993	* 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	61993	* 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	61993	* 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	61993	* 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	131881	vcc_act_call(struct vcc tl, struct token t, struct symbol *sym)
45		{
46		struct token *t0;
47		unsigned u;
48
49	69888	(void)t;
50	131881	ExpectErr(tl, ID);
51	69888	t0 = tl->t;
52	69888	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_NONE, SYMTAB_PARTIAL_NOERR,
53		XREF_REF);
54	131881	if (sym == NULL) {
55	61382	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_SUB, SYMTAB_CREATE,
56		XREF_REF);
57	61382	if (sym == NULL)
58	61993	return;
59	61382	VCC_GlobalSymbol(sym, SUB);
60	61382	}
61
62	69888	if (sym->kind == SYM_SUB) {
63	131878	vcc_AddCall(tl, t0, sym);
64
65	69885	Fb(tl, 1, "%s(ctx, VSUB_STATIC, NULL);\n", sym->lname);
66	69885	SkipToken(tl, ';');
67	69885	return;
68		}
69
70	61996	tl->t = t0;
71	3	u = tl->unique++;
72
73	3	Fb(tl, 1, "{\n");
74	3	tl->indent += INDENT;
75	61996	Fb(tl, 2, "VCL_SUB call_%u =\n", u);
76	3	tl->indent += INDENT;
77	3	vcc_Expr(tl, SUB);
78	3	Fb(tl, 2, ";\n\n");
79	61996	SkipToken(tl, ';');
80	2	tl->indent -= INDENT;
81	2	Fb(tl, 2, "if (call_%u == NULL) {\n", u);
82	2	Fb(tl, 2, " VRT_fail(ctx, \"Tried to call NULL SUB near"
83		" source %%u line %%u\",\n");
84	2	Fb(tl, 2, " VGC_ref[%u].source,\n", tl->cnt);
85	2	Fb(tl, 2, " VGC_ref[%u].line);\n", tl->cnt);
86	2	Fb(tl, 2, " END_;\n");
87	2	Fb(tl, 2, "}\n");
88	2	Fb(tl, 2, "call_%u->func(ctx, VSUB_STATIC, NULL);\n", u);
89	61995	tl->indent -= INDENT;
90	2	Fb(tl, 1, "}\n");
91	69888	}
92
93		/--------------------------------------------------------------------/
94	61993
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	61993	{ 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	27876	vcc_assign_expr(struct vcc tl, struct symbol sym, const struct assign *ap)
130		{
131		const char *e;
132	27876	unsigned indent = 1;
133
134	27876	e = ap->expr;
135	27876	if (e == NULL)
136	6261	return;
137
138	125728	while (*e != '\0') {
139	104113	if (*e == '\v')
140	17	Fb(tl, indent, "%s", sym->rname);
141		else
142	104096	Fb(tl, indent, "%c", *e);
143	104113	indent = 0;
144	104113	e++;
145		}
146	27876	}
147
148		/--------------------------------------------------------------------/
149
150		static void v_matchproto_(sym_act_f)
151	27888	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	27888	(void)t;
157	27888	ExpectErr(tl, ID);
158	27888	t = tl->t;
159	27888	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
160	27888	ERRCHK(tl);
161	27880	AN(sym);
162	27880	vcc_AddUses(tl, t, tl->t, sym, XREF_WRITE);
163	27880	ERRCHK(tl);
164	27880	type = sym->type;
165	612601	for (ap = assign; ap->type != VOID; ap++) {
166	609363	if (ap->type != type)
167	556606	continue;
168	52757	if (ap->oper != tl->t->tok)
169	28115	continue;
170	24642	vcc_NextToken(tl);
171	24642	type = ap->want;
172	24642	break;
173		}
174
175	27880	if (ap->type == VOID)
176	3238	SkipToken(tl, ap->oper);
177
178	27876	Fb(tl, 1, "%s\n", sym->lname);
179	27876	tl->indent += INDENT;
180	27876	vcc_assign_expr(tl, sym, ap);
181	27876	vcc_Expr(tl, type);
182	27876	ERRCHK(tl);
183	27834	tl->indent -= INDENT;
184	27834	Fb(tl, 1, ");\n");
185	27834	SkipToken(tl, ';');
186	27888	}
187
188		/--------------------------------------------------------------------/
189
190		static void v_matchproto_(sym_act_f)
191	5641	vcc_act_unset(struct vcc tl, struct token t, struct symbol *sym)
192		{
193
194		/* XXX: Wrong, should use VCC_Expr(HEADER) */
195	5641	ExpectErr(tl, ID);
196	5641	t = tl->t;
197	5641	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
198	5641	ERRCHK(tl);
199	5641	AN(sym);
200	5641	if (sym->u_methods == 0) {
201	2	vcc_ErrWhere2(tl, t, tl->t);
202	2	VSB_cat(tl->sb, "Variable cannot be unset.\n");
203	2	return;
204		}
205	5639	vcc_AddUses(tl, t, tl->t, sym, XREF_UNSET);
206	5639	Fb(tl, 1, "%s;\n", sym->uname);
207	5639	SkipToken(tl, ';');
208	5641	}
209
210		/--------------------------------------------------------------------/
211
212		static void v_matchproto_(sym_act_f)
213	15	vcc_act_ban(struct vcc tl, struct token t, struct symbol *sym)
214		{
215
216	15	(void)t;
217	15	(void)sym;
218
219	15	SkipToken(tl, '(');
220
221	15	Fb(tl, 1, "(void) VRT_ban_string(ctx, \n");
222	15	tl->indent += INDENT;
223	15	vcc_Expr(tl, STRING);
224	15	tl->indent -= INDENT;
225	15	ERRCHK(tl);
226	14	Fb(tl, 1, ");\n");
227
228	14	SkipToken(tl, ')');
229	14	SkipToken(tl, ';');
230	15	}
231
232		/--------------------------------------------------------------------/
233
234		static void v_matchproto_(sym_act_f)
235	8383	vcc_act_hash_data(struct vcc tl, struct token t, struct symbol *sym)
236		{
237
238	8383	(void)t;
239	8383	(void)sym;
240	8383	SkipToken(tl, '(');
241
242	8383	Fb(tl, 1, "VRT_hashdata(ctx,\n ");
243	8383	vcc_Expr(tl, STRANDS);
244	8383	ERRCHK(tl);
245	8382	Fb(tl, 1, ");\n");
246	8382	SkipToken(tl, ')');
247	8382	SkipToken(tl, ';');
248	8383	}
249
250		/--------------------------------------------------------------------/
251
252		static void
253	8	vcc_act_return_pass(struct vcc *tl)
254		{
255
256	8	SkipToken(tl, '(');
257	8	Fb(tl, 1, "VRT_hit_for_pass(ctx,\n");
258	8	tl->indent += INDENT;
259	8	vcc_Expr(tl, DURATION);
260	8	ERRCHK(tl);
261	8	SkipToken(tl, ')');
262	8	Fb(tl, 1, ");\n");
263	8	tl->indent -= INDENT;
264	8	}
265		/--------------------------------------------------------------------/
266
267		static void
268	56	vcc_act_return_fail(struct vcc *tl)
269		{
270	56	SkipToken(tl, '(');
271	56	Fb(tl, 1, "VRT_fail(ctx, \"%%s\",\n");
272	56	tl->indent += INDENT;
273	56	vcc_Expr(tl, STRING);
274	56	tl->indent -= INDENT;
275	56	ERRCHK(tl);
276	56	SkipToken(tl, ')');
277	56	Fb(tl, 1, ");\n");
278	56	}
279
280		/--------------------------------------------------------------------/
281
282		static void
283	8568	vcc_act_return_synth(struct vcc *tl)
284		{
285
286	8568	SkipToken(tl, '(');
287	8568	Fb(tl, 1, "VRT_synth(ctx,\n");
288	8568	tl->indent += INDENT;
289	8568	vcc_Expr(tl, INT);
290	8568	ERRCHK(tl);
291	8568	Fb(tl, 1, ",\n");
292	8568	if (tl->t->tok == ',') {
293	2837	vcc_NextToken(tl);
294	2837	vcc_Expr(tl, STRING);
295	2837	ERRCHK(tl);
296	2837	} else {
297	5731	Fb(tl, 1, "(const char*)0\n");
298		}
299	8568	tl->indent -= INDENT;
300	8568	SkipToken(tl, ')');
301	8568	Fb(tl, 1, ");\n");
302	8568	}
303
304		/--------------------------------------------------------------------/
305
306		static void
307	24	vcc_act_return_vcl(struct vcc *tl)
308		{
309		struct symbol *sym;
310		struct inifin *p;
311		char buf[1024];
312
313	24	SkipToken(tl, '(');
314	24	ExpectErr(tl, ID);
315	24	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VCL, SYMTAB_EXISTING, XREF_NONE);
316	24	ERRCHK(tl);
317	22	AN(sym);
318	22	if (sym->eval_priv == NULL) {
319	21	VSB_cat(tl->symtab, ",\n {\n");
320	21	VSB_cat(tl->symtab, "\t\"dir\": \"import\",\n");
321	21	VSB_cat(tl->symtab, "\t\"type\": \"$VCL\",\n");
322	21	VSB_printf(tl->symtab, "\t\"name\": \"%s\"\n", sym->name);
323	21	VSB_cat(tl->symtab, " }");
324
325	21	bprintf(buf, "vgc_vcl_%u", tl->unique++);
326	21	sym->eval_priv = strdup(buf);
327	21	AN(sym->eval_priv);
328
329	21	Fh(tl, 0, "static VCL_VCL %s;", buf);
330	21	Fh(tl, 0, "\t/* VCL %s */\n", sym->name);
331
332	21	p = New_IniFin(tl);
333	21	AN(p);
334	42	VSB_printf(p->ini, "\t%s = VPI_vcl_get(ctx, \"%s\");",
335	21	buf, sym->name);
336	42	VSB_printf(p->fin, "\tVPI_vcl_rel(ctx, %s);",
337	21	buf);
338	21	}
339	44	Fb(tl, 1, "VPI_vcl_select(ctx, %s);\t/* %s */\n",
340	22	(const char*)sym->eval_priv, sym->name);
341	22	SkipToken(tl, ')');
342	24	}
343
344		/--------------------------------------------------------------------/
345
346		static void v_matchproto_(sym_act_f)
347	61999	vcc_act_return(struct vcc tl, struct token t, struct symbol *sym)
348		{
349		unsigned hand, mask;
350		const char *h;
351
352	61999	(void)t;
353	61999	(void)sym;
354	61999	AN(tl->curproc);
355	61999	if (tl->t->tok == ';' && tl->curproc->method == NULL) {
356	5	SkipToken(tl, ';');
357	5	Fb(tl, 1, "return;\n");
358	5	return;
359		}
360	61994	SkipToken(tl, '(');
361	61993	ExpectErr(tl, ID);
362
363	61993	hand = VCL_RET_MAX;
364	61993	h = NULL;
365	61993	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	61993	if (h == NULL) {
374	1	VSB_cat(tl->sb, "Expected return action name.\n");
375	1	vcc_ErrWhere(tl, tl->t);
376	1	ERRCHK(tl);
377	0	}
378	61992	assert(hand < VCL_RET_MAX);
379	61992	AN(mask);
380
381		vcc_ProcAction(tl->curproc, hand, mask, tl->t);
382		vcc_NextToken(tl);
383	61992	if (tl->t->tok == '(') {
384	8657	if (hand == VCL_RET_SYNTH \|\| hand == VCL_RET_ERROR)
385	8568	vcc_act_return_synth(tl);
386	89	else if (hand == VCL_RET_VCL)
387	24	vcc_act_return_vcl(tl);
388	65	else if (hand == VCL_RET_PASS)
389	8	vcc_act_return_pass(tl);
390	57	else if (hand == VCL_RET_FAIL)
391	56	vcc_act_return_fail(tl);
392		else {
393	1	VSB_cat(tl->sb, "Arguments not allowed.\n");
394	1	vcc_ErrWhere(tl, tl->t);
395		}
396	8657	} else {
397	53335	if (hand == VCL_RET_SYNTH \|\| hand == VCL_RET_VCL) {
398	1	VSB_cat(tl->sb, "Missing argument.\n");
399	1	vcc_ErrWhere(tl, tl->t);
400	1	}
401		}
402	61992	ERRCHK(tl);
403		Fb(tl, 1, "END_;\n");
404	61988	if (hand == VCL_RET_FAIL)
405	78	Fb(tl, 1, "VRT_fail(ctx, \"Failed from VCL\");\n");
406		else
407	61910	Fb(tl, 1, "VRT_handling(ctx, VCL_RET_%s);\n", h);
408	61988	SkipToken(tl, ')');
409	61988	SkipToken(tl, ';');
410		}
411
412		/--------------------------------------------------------------------/
413
414		static void v_matchproto_(sym_act_f)
415	6	vcc_act_synthetic(struct vcc tl, struct token t, struct symbol *sym)
416		{
417
418	6	(void)t;
419	6	(void)sym;
420	6	ExpectErr(tl, '(');
421	6	ERRCHK(tl);
422	6	vcc_NextToken(tl);
423
424	6	Fb(tl, 1, "VRT_synth_strands(ctx, ");
425	6	vcc_Expr(tl, STRANDS);
426	6	ERRCHK(tl);
427	5	Fb(tl, 1, ");\n");
428
429	5	SkipToken(tl, ')');
430	5	SkipToken(tl, ';');
431	6	}
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	3025	vcc_Action_Init(struct vcc *tl)
448		{
449		struct symbol *sym;
450
451	3025	ACT(ban, vcc_act_ban, 0);
452	3025	ACT(call, vcc_act_call, 0);
453	3025	ACT(hash_data, vcc_act_hash_data,
454		VCL_MET_HASH);
455	3025	ACT(if, vcc_Act_If, 0);
456	3025	ACT(new, vcc_Act_New,
457		VCL_MET_INIT);
458	3025	ACT(return, vcc_act_return, 0);
459	3025	ACT(set, vcc_act_set, 0);
460	3025	ACT(synthetic, vcc_act_synthetic,
461		VCL_MET_SYNTH \| VCL_MET_BACKEND_ERROR);
462	3025	ACT(unset, vcc_act_unset, 0);
463	3025	}