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, ';');
}

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

// 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(unset,      vcc_act_unset,  0);
}

		vinyl-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	310028	*
9		* 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	310028	* 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	310028	* 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		* 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	310028	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* 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	310028
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	366988	vcc_act_call(struct vcc tl, struct token t, struct symbol *sym)
45		{
46		struct token *t0;
47		unsigned u;
48
49	366988	(void)t;
50	677016	ExpectErr(tl, ID);
51	366988	t0 = tl->t;
52	366988	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_NONE, SYMTAB_PARTIAL_NOERR,
53		XREF_REF);
54	366988	if (sym == NULL) {
55	330944	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_SUB, SYMTAB_CREATE,
56	310028	XREF_REF);
57	330944	if (sym == NULL)
58	0	return;
59	330944	VCC_GlobalSymbol(sym, SUB);
60	640972	}
61
62	366988	if (sym->kind == SYM_SUB) {
63	366976	vcc_AddCall(tl, t0, sym);
64	310028
65	366976	Fb(tl, 1, "%s(ctx, VSUB_STATIC, NULL);\n", sym->lname);
66	366976	SkipToken(tl, ';');
67	366976	return;
68	310028	}
69
70	12	tl->t = t0;
71	12	u = tl->unique++;
72	310028
73	12	Fb(tl, 1, "{\n");
74	12	tl->indent += INDENT;
75	12	Fb(tl, 2, "VCL_SUB call_%u =\n", u);
76	12	tl->indent += INDENT;
77	310040	vcc_Expr(tl, SUB);
78	12	Fb(tl, 2, ";\n\n");
79	12	SkipToken(tl, ';');
80	8	tl->indent -= INDENT;
81	8	Fb(tl, 2, "if (call_%u == NULL) {\n", u);
82	8	Fb(tl, 2, " VRT_fail(ctx, \"Tried to call NULL SUB near"
83		" source %%u line %%u\",\n");
84	310036	Fb(tl, 2, " VGC_ref[%u].source,\n", tl->cnt);
85	8	Fb(tl, 2, " VGC_ref[%u].line);\n", tl->cnt);
86	8	Fb(tl, 2, " END_;\n");
87	8	Fb(tl, 2, "}\n");
88	8	Fb(tl, 2, "call_%u->func(ctx, VSUB_STATIC, NULL);\n", u);
89	310036	tl->indent -= INDENT;
90	8	Fb(tl, 1, "}\n");
91	366988	}
92
93	310028	/--------------------------------------------------------------------/
94
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	310028	{ INT, T_MUL, INT, "\v * " },
104		{ 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	310028	{ 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	310028	{ 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	130044	vcc_assign_expr(struct vcc tl, struct symbol sym, const struct assign *ap)
130		{
131		const char *e;
132	130044	unsigned indent = 1;
133
134	130044	e = ap->expr;
135	130044	if (e == NULL)
136	26652	return;
137
138	580176	while (*e != '\0') {
139	476784	if (*e == '\v')
140	104	Fb(tl, indent, "%s", sym->rname);
141		else
142	476680	Fb(tl, indent, "%c", *e);
143	476784	indent = 0;
144	476784	e++;
145		}
146	130044	}
147
148		/--------------------------------------------------------------------/
149
150		static void v_matchproto_(sym_act_f)
151	130088	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	130088	(void)t;
157	130088	ExpectErr(tl, ID);
158	130088	t = tl->t;
159	130088	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
160	130088	ERRCHK(tl);
161	130060	AN(sym);
162	130060	vcc_AddUses(tl, t, tl->t, sym, XREF_WRITE);
163	130060	ERRCHK(tl);
164	130060	type = sym->type;
165	2856788	for (ap = assign; ap->type != VOID; ap++) {
166	2843088	if (ap->type != type)
167	2595280	continue;
168	247808	if (ap->oper != tl->t->tok)
169	131448	continue;
170	116360	vcc_NextToken(tl);
171	116360	type = ap->want;
172	116360	break;
173		}
174
175	130060	if (ap->type == VOID)
176	13700	SkipToken(tl, ap->oper);
177
178	130044	Fb(tl, 1, "%s\n", sym->lname);
179	130044	tl->indent += INDENT;
180	130044	vcc_assign_expr(tl, sym, ap);
181	130044	vcc_Expr(tl, type);
182	130044	ERRCHK(tl);
183	129872	tl->indent -= INDENT;
184	129872	Fb(tl, 1, ");\n");
185	129872	SkipToken(tl, ';');
186	130088	}
187
188		/--------------------------------------------------------------------/
189
190		static void v_matchproto_(sym_act_f)
191	35732	vcc_act_unset(struct vcc tl, struct token t, struct symbol *sym)
192		{
193
194		/* XXX: Wrong, should use VCC_Expr(HEADER) */
195	35732	ExpectErr(tl, ID);
196	35732	t = tl->t;
197	35732	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VAR, SYMTAB_EXISTING, XREF_NONE);
198	35732	ERRCHK(tl);
199	35732	AN(sym);
200	35732	if (sym->u_methods == 0) {
201	8	vcc_ErrWhere2(tl, t, tl->t);
202	8	VSB_cat(tl->sb, "Variable cannot be unset.\n");
203	8	return;
204		}
205	35724	vcc_AddUses(tl, t, tl->t, sym, XREF_UNSET);
206	35724	Fb(tl, 1, "%s;\n", sym->uname);
207	35724	SkipToken(tl, ';');
208	35732	}
209
210		/--------------------------------------------------------------------/
211
212		static void v_matchproto_(sym_act_f)
213	60	vcc_act_ban(struct vcc tl, struct token t, struct symbol *sym)
214		{
215
216	60	(void)t;
217	60	(void)sym;
218
219	60	SkipToken(tl, '(');
220
221	60	Fb(tl, 1, "(void) VRT_ban_string(ctx, \n");
222	60	tl->indent += INDENT;
223	60	vcc_Expr(tl, STRING);
224	60	tl->indent -= INDENT;
225	60	ERRCHK(tl);
226	56	Fb(tl, 1, ");\n");
227
228	56	SkipToken(tl, ')');
229	56	SkipToken(tl, ';');
230	60	}
231
232		/--------------------------------------------------------------------/
233
234		static void v_matchproto_(sym_act_f)
235	35524	vcc_act_hash_data(struct vcc tl, struct token t, struct symbol *sym)
236		{
237
238	35524	(void)t;
239	35524	(void)sym;
240	35524	SkipToken(tl, '(');
241
242	35524	Fb(tl, 1, "VRT_hashdata(ctx,\n ");
243	35524	vcc_Expr(tl, STRANDS);
244	35524	ERRCHK(tl);
245	35520	Fb(tl, 1, ");\n");
246	35520	SkipToken(tl, ')');
247	35520	SkipToken(tl, ';');
248	35524	}
249
250		/--------------------------------------------------------------------/
251
252		static void
253	40	vcc_act_return_pass(struct vcc *tl)
254		{
255
256	40	SkipToken(tl, '(');
257	40	Fb(tl, 1, "VRT_hit_for_pass(ctx,\n");
258	40	tl->indent += INDENT;
259	40	vcc_Expr(tl, DURATION);
260	40	ERRCHK(tl);
261	40	SkipToken(tl, ')');
262	40	Fb(tl, 1, ");\n");
263	40	tl->indent -= INDENT;
264	40	}
265		/--------------------------------------------------------------------/
266
267		static void
268	224	vcc_act_return_fail(struct vcc *tl)
269		{
270	224	SkipToken(tl, '(');
271	224	Fb(tl, 1, "VRT_fail(ctx, \"%%s\",\n");
272	224	tl->indent += INDENT;
273	224	vcc_Expr(tl, STRING);
274	224	tl->indent -= INDENT;
275	224	ERRCHK(tl);
276	224	SkipToken(tl, ')');
277	224	Fb(tl, 1, ");\n");
278	224	}
279
280		/--------------------------------------------------------------------/
281
282		static void
283	83636	vcc_act_return_synth(struct vcc *tl)
284		{
285
286	83636	SkipToken(tl, '(');
287	83636	Fb(tl, 1, "VRT_synth(ctx,\n");
288	83636	tl->indent += INDENT;
289	83636	vcc_Expr(tl, INT);
290	83636	ERRCHK(tl);
291	83636	Fb(tl, 1, ",\n");
292	83636	if (tl->t->tok == ',') {
293	47464	vcc_NextToken(tl);
294	47464	vcc_Expr(tl, STRING);
295	47464	ERRCHK(tl);
296	47464	} else {
297	36172	Fb(tl, 1, "(const char*)0\n");
298		}
299	83636	tl->indent -= INDENT;
300	83636	SkipToken(tl, ')');
301	83636	Fb(tl, 1, ");\n");
302	83636	}
303
304		/--------------------------------------------------------------------/
305
306		static void
307	96	vcc_act_return_vcl(struct vcc *tl)
308		{
309		struct symbol *sym;
310		struct inifin *p;
311		char buf[1024];
312
313	96	SkipToken(tl, '(');
314	96	ExpectErr(tl, ID);
315	96	sym = VCC_SymbolGet(tl, SYM_MAIN, SYM_VCL, SYMTAB_EXISTING, XREF_NONE);
316	96	ERRCHK(tl);
317	88	AN(sym);
318	88	if (sym->eval_priv == NULL) {
319	84	VSB_cat(tl->symtab, ",\n {\n");
320	84	VSB_cat(tl->symtab, "\t\"dir\": \"import\",\n");
321	84	VSB_cat(tl->symtab, "\t\"type\": \"$VCL\",\n");
322	84	VSB_printf(tl->symtab, "\t\"name\": \"%s\"\n", sym->name);
323	84	VSB_cat(tl->symtab, " }");
324
325	84	bprintf(buf, "vgc_vcl_%u", tl->unique++);
326	84	sym->eval_priv = strdup(buf);
327	84	AN(sym->eval_priv);
328
329	84	Fh(tl, 0, "static VCL_VCL %s;", buf);
330	84	Fh(tl, 0, "\t/* VCL %s */\n", sym->name);
331
332	84	p = New_IniFin(tl);
333	84	AN(p);
334	168	VSB_printf(p->ini, "\t%s = VPI_vcl_get(ctx, \"%s\");",
335	84	buf, sym->name);
336	168	VSB_printf(p->fin, "\tVPI_vcl_rel(ctx, %s);",
337	84	buf);
338	84	}
339	176	Fb(tl, 1, "VPI_vcl_select(ctx, %s);\t/* %s */\n",
340	88	(const char*)sym->eval_priv, sym->name);
341	88	SkipToken(tl, ')');
342	96	}
343
344		/--------------------------------------------------------------------/
345
346		static void v_matchproto_(sym_act_f)
347	321888	vcc_act_return(struct vcc tl, struct token t, struct symbol *sym)
348		{
349		unsigned hand, mask;
350		const char *h;
351
352	321888	(void)t;
353	321888	(void)sym;
354	321888	AN(tl->curproc);
355	321888	if (tl->t->tok == ';' && tl->curproc->method == NULL) {
356	11856	SkipToken(tl, ';');
357	11856	Fb(tl, 1, "return;\n");
358	11856	return;
359		}
360	310032	SkipToken(tl, '(');
361	310028	ExpectErr(tl, ID);
362
363	310028	hand = VCL_RET_MAX;
364	310028	h = NULL;
365	310028	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	310028	if (h == NULL) {
374	4	VSB_cat(tl->sb, "Expected return action name.\n");
375	4	vcc_ErrWhere(tl, tl->t);
376	4	ERRCHK(tl);
377	0	}
378	310024	assert(hand < VCL_RET_MAX);
379	310024	AN(mask);
380
381		vcc_ProcAction(tl->curproc, hand, mask, tl->t);
382		vcc_NextToken(tl);
383	310024	if (tl->t->tok == '(') {
384	84000	if (hand == VCL_RET_SYNTH \|\| hand == VCL_RET_ERROR)
385	83636	vcc_act_return_synth(tl);
386	364	else if (hand == VCL_RET_VCL)
387	96	vcc_act_return_vcl(tl);
388	268	else if (hand == VCL_RET_PASS)
389	40	vcc_act_return_pass(tl);
390	228	else if (hand == VCL_RET_FAIL)
391	224	vcc_act_return_fail(tl);
392		else {
393	4	VSB_cat(tl->sb, "Arguments not allowed.\n");
394	4	vcc_ErrWhere(tl, tl->t);
395		}
396	84000	} else {
397	226024	if (hand == VCL_RET_SYNTH \|\| hand == VCL_RET_VCL) {
398	4	VSB_cat(tl->sb, "Missing argument.\n");
399	4	vcc_ErrWhere(tl, tl->t);
400	4	}
401		}
402	310024	ERRCHK(tl);
403		Fb(tl, 1, "END_;\n");
404	310008	if (hand == VCL_RET_FAIL)
405	312	Fb(tl, 1, "VRT_fail(ctx, \"Failed from VCL\");\n");
406		else
407	309696	Fb(tl, 1, "VRT_handling(ctx, VCL_RET_%s);\n", h);
408	310008	SkipToken(tl, ')');
409	310008	SkipToken(tl, ';');
410		}
411
412		/--------------------------------------------------------------------/
413
414		// The pp[] trick is to make the length of #name visible to flexelint.
415		#define ACT(name, func, mask) \
416		do { \
417		const char pp[] = #name; \
418		sym = VCC_MkSym(tl, pp, SYM_MAIN, SYM_ACTION, VCL_LOW, \
419		VCL_HIGH); \
420		AN(sym); \
421		sym->action = func; \
422		sym->action_mask = (mask); \
423		} while (0)
424
425		void
426	12788	vcc_Action_Init(struct vcc *tl)
427		{
428		struct symbol *sym;
429
430	12788	ACT(ban, vcc_act_ban, 0);
431	12788	ACT(call, vcc_act_call, 0);
432	12788	ACT(hash_data, vcc_act_hash_data,
433		VCL_MET_HASH);
434	12788	ACT(if, vcc_Act_If, 0);
435	12788	ACT(new, vcc_Act_New,
436		VCL_MET_INIT);
437	12788	ACT(return, vcc_act_return, 0);
438	12788	ACT(set, vcc_act_set, 0);
439	12788	ACT(unset, vcc_act_unset, 0);
440	12788	}